Dissertations / Theses on the topic 'Vulpes vulpes'
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1
Arnold, Janosch. "Olfactory communication in red foxes {Vulpes vulpes)." Thesis, University of Bristol, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.520262.
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Smith, G. C. "Urban foxes (Vulpes vulpes) and rabies control." Thesis, University of Bristol, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.234565.
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Kaphegyi, Thomas A. M. "Untersuchungen zum Sozialverhalten des Rotfuchses (Vulpes vulpes L.)." [S.l.] : [s.n.], 2002. http://www.freidok.uni-freiburg.de/volltexte/505.
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Trewhella, W. J. "Modelling dispersals in urban fox (Vulpes vulpes) populations." Thesis, University of Bristol, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.233625.
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Doncaster, C. P. "The spatial organisation of urban foxes (Vulpes vulpes) in Oxford." Thesis, University of Oxford, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.354822.
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Robertson, Peter Charles John. "Movement behaviour of wild and rehabilitated juvenile foxes (Vulpes vulpes)." Thesis, University of Bristol, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.238942.
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Woollard, Thomas Henry. "Factors affecting dispersal in an urban fox (Vulpes vulpes) population." Thesis, University of Bristol, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.303869.
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Sanchis, Monsonís Gloria. "Parasitofauna del zorro rojo (Vulpes vulpes) en la Comunidad Valenciana." Doctoral thesis, Universidad de Murcia, 2016. http://hdl.handle.net/10803/373918.
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El presente estudio sobre la parasitofauna del zorro rojo (Vulpes vulpes) se ha realizado en la Comunidad Valenciana, dentro del Programa de Vigilancia Epidemiológica sobre especies cinegéticas y salvajes. Entre mayo de 2006 y noviembre de 2013 se realizaron las necropsias de 286 zorros obtenidos de capturas autorizadas para el control de predadores, de atropellos o recogidos enfermos. Tras el análisis de las vísceras torácicas y abdominales, así como el examen de muestras de musculatura esquelética sometidas a una digestión artificial, se detectaron 26 especies de helmintos, incluyendo 16 especies de nematodos, 8 especies de cestodos, una especie de trematodo y una especie de acantocéfalo. La prevalencia de helmintos fue del 98,25% (281/286). La riqueza parasitaria media de helmintos fue de 5,1 (SD=2,42, rango 0-11). Se identificaron Mesocestoides spp. (prevalencia 75,87%), Pterigodermatites affinis (59,09%), Uncinaria stenocephala (58,39%), Eucoleus aerophilus (51,40%), Angiostrongylus vasorum (40,91%), Oxynema crassispiculum (34,97%), Crenosoma vulpis (27,97%), Joyeuxiella echinorrhynchoides (27,62%), Toxocara canis (26,57%), Toxascaris leonina (25,17%), Spirocerca lupi (22,03%), Macracanthorhynchus catulinus (14,69%), Taenia pisiformis (13,29%), Trichuris vulpis (11,54%), Pearsonema plica (4,20%), Mastophorus spp. (3,50%), Dipilydium caninum (3,15%), Taenia spp. (2,80%), Filaroides hirthi (1,75%, primera cita en el zorro de la Península Ibérica), Taenia polyacantha (1,05%), Dirofilaria immitis (1,05%), Brachylaima spp. (0,70%), Taenia hydatigena (0,70%), Taenia crassiceps (0,70%) y Trichinella spp. (0,70%, confirmándose que era T. britovi en un zorro), Taenia taeniaeformis (0,35%) y Physaloptera sibirica (0,35%). Además, es la primera vez que se cita en el zorro en la Península Ibérica la presencia de Tethratirydium en cavidad torácica. La detección de ectoparásitos se realizó en 272 zorros mediante el examen visual de la piel y mediante el examen microscópico de muestras de raspados cutáneos y del conducto auditivo del oído. El 90,8% de los zorros tuvo ectoparásitos (247/272). Se identificaron 24 especies de artrópodos, incluyendo 11 especies de ixódidos (Rhipicephalus turanicus: prevalencia 65,07%, Rhipicephalus pusillus: 28,68%, Ixodes hexagonus: 20,22%, Ixodes ricinus: 7,72%, Rhipicephalus sanguineus: 3,68%, Ixodes ventalloi: 2,21%, Hyalomma lusitanicum: 1,10%, Ixodes inopinatus: 0,74%, Dermacentor marginatus: 0,37%, Haemaphysalis sulcata: 0,37%, Haemaphysalis concinna: 0,37%), 10 especies de pulgas (Pulex irritans: 62,13%, Spilopsyllus cuniculi: 26,84%, Ctenocephalides canis: 9,56%, Ctenocephalides felis: 1,84% Odontopsyllus quirosi: 1,47% Archaeopsylla erinacei subsp. maura: 0,74%, Echidnophaga iberica: 0,74%, Chaetopsylla trichosa: 0,37%, Xenopsylla cunicularis: 0,37% y Nosopsyllus fasciatus: 0,37%), una especie de malófago (Trichodectes canis: 0,70%) y dos especies de ácaros (Sarcoptes scabiei: 2,80% y Otodectes cynotis: 0,35%). Es la primera cita de H. sulcata, E. ibérica y X. cunicularis en el zorro de la Península Ibérica. Se ha comprobado que todas las especies aisladas de helmintos y artrópodos presentaban un alto nivel de agregación parasitaria. Además, la riqueza de especies de helmintos está influida significativamente por el sexo y la edad, así como por el menor grado de urbanización y la latitud. Se comprueba que la presencia de varias especies de helmintos y garrapatas está correlacionada significativamente con la edad y el sexo, y también con factores extrínsecos tales como la latitud, altitud, la estación del año, el termoclima y el grado de urbanización. Nuestros resultados demuestran que los zorros de la Comunidad Valenciana son portadores de helmintos cuya importancia epidemiológica es muy destacada, ya sea por su carácter zoonósico (en particular Toxocara canis y Trichinella spp.), o por su acción patógena demostrada en perros (Spirocerca lupi y Angiostrongylus vasorum). Además, la riqueza de ixódidos y pulgas sugiere que el zorro puede participar de forma activa en la difusión de enfermedades transmitidas por vectores. Por tanto, este cánido silvestre es una especie clave para los estudios epidemiológicos en zonas periurbanas y rurales, donde su presencia debe ser valorada como un factor de riesgo sanitario.The present study investigated the helminth and ectoparasite species parasitizing the red fox (Vulpes vulpes) in the Valencia Community (south-east of Spain). The work was carried out in the context of a wildlife surveillance program developed by the Valencian Community authorities. Between May 2006 and November 2013 a total of 286 red foxes were necropsied. The animals were hunted under official permits or killed by traffic accidents. During necropsy, thoracic and abdominal viscera were processed to determine the presence of helminth species. Moreover, a sample of skeletal muscle was analyzed. A total of 26 helminth species were identified, including 16 nematodes, 8 cestodes, one trematode and one acanthocephalan. The helminth prevalence was 98.25% (281/286), and the mean helminth richness was 5.1 (SD=2.42, range 0-11). Foxes harboured the following nematode and cestode species: Mesocestoides spp. (prevalence 75.87%), Pterigodermatites affinis (59.09%), Uncinaria stenocephala (58.39%), Eucoleus aerophilus (51.40%), Angiostrongylus vasorum (40.91%), Oxynema crassispiculum (34.97%), Crenosoma vulpis (27.97%), Joyeuxiella echinorrhynchoides (27.62%), Toxocara canis (26.57%), Toxascaris leonina (25.17%), Spirocerca lupi (22.03%), Macracanthorhynchus catulinus (14.69%), Taenia pisiformis (13.29%), Trichuris vulpis (11.54%), Pearsonema plica (4.20%), Mastophorus spp. (3.50%), Dipilydium caninum (3.15%), Taenia spp. (2.80%), Filaroides hirthi (1.75%, being the first report for this nematode in the red fox from the Iberian Peninsula), Taenia polyacantha (1.05%), Dirofilaria immitis (1.05%), Brachylaima spp. (0.70%), Taenia hydatigena (0.70%), Taenia crassiceps (0.70%), Trichinella spp. (0.70%, with a case of T. britovi), Taenia taeniaeformis (0.35%) and Physaloptera sibirica (0.35%). Moreover, the study represent the first report of Tethratirydium larvae in the thoracic cavity of red fox. The presence of ectoparasites was evaluated in 272 red foxes through visual and microscopic examination of the skin and ear canal. Ninety-eight percent of the animals were found positives for ectoparasites. Twenty-four ectoparasite species were identified: 11 ixodid ticks (Rhipicephalus turanicus: prevalence 65.07%, Rhipicephalus pusillus: 28.68%, Ixodes hexagonus: 20.22%, Ixodes ricinus: 7.72%, Rhipicephalus sanguineus: 3.68%, Ixodes ventalloi: 2.21%, Hyalomma lusitanicum: 1.10%, Ixodes inopinatus: 0.74%, Dermacentor marginatus: 0.37%, Haemaphysalis sulcata: 0.37%, Haemaphysalis concinna: 0.37%), 10 fleas (Pulex irritans: 62.13%, Spilopsyllus cuniculi: 26.84%, Ctenocephalides canis: 9.56%, Ctenocephalides felis: 1.84% Odontopsyllus quirosi: 1.47% Archaeopsylla erinacei subsp. maura: 0.74%, Echidnophaga iberica: 0.74%, Chaetopsylla trichosa: 0.37%, Xenopsylla cunicularis: 0.37% and Nosopsyllus fasciatus: 0.37%), one mallophagus louse (Trichodectes canis: 0.70%) and two mites (Sarcoptes scabiei: 2.80% and Otodectes cynotis: 0.35%). This work represent the first report of H. sulcata, E. iberica and X. cunicularis for red fox in the Iberian Peninsula. All helminths and ecoparasites showed a high degree of aggregation. Helminth richness and the prevalence of different parasite species were significantly affected by host (sex and age) and environmental factors (presence of urban areas, latitude, altitude, season and climate). The results demonstrate that foxes in Valencia Community are carriers of helminths whose epidemiological role is noticeable, either because of their zoonotic potential (specially Toxocara canis and Trichinella spp.), or for their pathogenicity in dogs (Spirocerca lupi and Angiostrongylus vasorum). Finally, ixodid and flea richness suggests that the red fox can actively participate in the spread of vector-borne diseases. This wild canid is a key species for epidemiological studies in periurban and rural areas, and its presence should be evaluated as a health risk factor.
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Soulsbury, Carl D. "The costs and benefits of red fox (Vulpes vulpes) dispersal." Thesis, University of Bristol, 2006. http://hdl.handle.net/1983/8d5a7e3a-6c8c-4bd0-94ee-bdca2cabc3fa.
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Seymour, Adrian S. "The ecology of nest predation by red foxes Vulpes vulpes." Thesis, University of Bristol, 2000. http://hdl.handle.net/1983/0e588e7e-0e0c-4406-ae27-1981ea2f1989.
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Schmitt, Rolande. "Les helminthes intestinaux du renard roux (vulpes vulpes) en Alsace." Strasbourg 1, 1988. http://www.theses.fr/1988STR15046.
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White, Piran C. L. "Spacing and contact behaviour in an urban fox (Vulpes vulpes) population." Thesis, University of Bristol, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.411715.
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Devenish-Nelson, Eleanor Sarah. "Sarcoptic mange and the demography of the red fox, Vulpes vulpes." Thesis, Durham University, 2012. http://etheses.dur.ac.uk/6960/.
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Vertebrate species are managed for many reasons, including their role as economically important predators or as carriers of disease. Successful management depends on the ability to predict the outcome of management actions on a species’ population dynamics. However, uncertainty in the models used to make such predictions can arise from multiple sources, including sampling error in vital rates, intraspecific demographic variation and unknown interspecific interactions. The red fox Vulpes vulpes provides a useful model organism for exploring such uncertainty, because management of this important predator and disease host is often ineffective, despite substantial sampling effort. By explicitly accounting for sampling error in survival and fecundity, confidence intervals for population growth rates were derived from published point estimates of red fox demographic data. Uncertainty in population growth rates was found to be high, requiring a quadrupling of sampling effort to halve the confidence intervals. Given the often poor justification for the choice of distribution used to model litter size, the influence of probability distributions on population model outcomes was tested. In this first comprehensive evaluation, estimates of quasi-extinction and disease control probabilities for three Canid species were found to be robust to litter size distribution choice. Demographic analyses of the red fox revealed a medium to fast life history speed and significant survival and fecundity contributions from juveniles to population growth. Intraspecific variation was detected within these spectra of demographic metrics: the first such demonstration for carnivores. Simulated data substitution between fox populations revealed that geographic proximity and similar levels of anthropogenic disturbance did not infer demographic similarity. Considering the sampling effort expended on the red fox, the species appears well-studied; yet, substantial limitations in data collection were identified. Compartment modelling of a sarcoptic mange outbreak in an urban fox population in Bristol, UK, revealed that disease transmission was frequency-dependent, consistent with contact rates being determined by social interactions rather than by population density. Individual-based modelling suggested that indirect transmission, genetic resistance and long-distance recolonisation were required to replicate the observed rapid spread of mange and subsequent population recovery. Thus, this first attempt to model mange dynamics in this canid provided novel insight into previously uncertain epidemiological and behavioural processes in the transmission of sarcoptic mange in the red fox.
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Iossa, Graziella. "The reproductive behaviour of an urban red fox (Vulpes vulpes) population." Thesis, University of Bristol, 2006. http://hdl.handle.net/1983/2d6fe1f1-a84e-400b-99e3-dbb9e92bf750.
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Moberly, Rebecca L. "The costs of fox predation to agriculture in Britain." Thesis, University of York, 2002. http://etheses.whiterose.ac.uk/10798/.
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Scholz, Carolin [Verfasser]. "The ecology of red foxes (vulpes vulpes) in anthropogenic landscapes / Carolin Scholz." Berlin : Freie Universität Berlin, 2021. http://d-nb.info/1232726559/34.
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MULLER, NICOLE. "Les helminthes intestinaux du renard roux - vulpes vulpes - dans le haut-rhin." Strasbourg 1, 1987. http://www.theses.fr/1987STR10747.
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Bartnik, Hans-Christian. "Untersuchungen zum serologischen Nachweis der Sarcoptes-Räude beim Rotfuchs (Vulpes vulpes) in Berlin." [S.l.] : [s.n.], 2002. http://www.diss.fu-berlin.de/2002/33/index.html.
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Constantin, Eleonora-Maria. "Epidemiologische Untersuchung zur Verbreitung der Räude beim Rotfuchs (Vulpes vulpes) in Baden-Württemberg." [S.l. : s.n.], 2005. http://www.diss.fu-berlin.de/2005/161/index.html.
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O'Mahony, D. O. M. "The abundance and ecology of the red fox (Vulpes vulpes) in rural landscapes." Thesis, Queen's University Belfast, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.273134.
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Stonkus, Ričardas. "Rudosios lapės (Vulpes vulpes), usurinio šuns (Nyctereutes procyonoides Grey.) morfometrija ir mityba šaltuoju metų periodu." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2010. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2007~D_20101125_183210-15135.
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2005 – 2007 m. šaltuoju metų periodu (rudenį ir žiemą) buvo tirta rudųjų lapių (Vulpes vulpes L.) ir usūrinių šunų (Nyctereutes procyonoides Grey.) mityba ir morfometrija. Tyrimams buvo naudojamos sumedžiotos lapės ir usūriniai šunys skirti kailių išdirbimui bei iškamšų darymui. Visi tirti gyvūnai buvo pasverti. Iš viso atlikti 5 kūno ir 16 kaukolės matavimų, apskaičiuoti kaukolės, kiaušo ir snukio indeksai. Pas rudasias lapes rasti statistiškai patikimi skirtumai tarp patinų ir patelių buvo pagal visus 5 kūno matmenis. Atlikus kraniometrinę analizę rasti 6 statistiškai patikimi skirtumai tarp usūrinių šunų ir 10 patikimų skirtumų tarp rudosios lapės patinų ir patelių. Atlikus tarprūšinę analizę rasta 15 statistiškai patikimų skirtumų tarp patinų ir tiek pat tarp patelių. Usūrinių šunų kaukolės ir snukio indeksai didesni už lapių, jais galima remtis atskiriant šių gyvūnų kaukoles. Taip pat buvo atlikta skrandžių analizė, apskaičiuotas mitybos objektų aptikimo dažnis ir santykinis tūris, įvertintas tirtų plėšrūnų mitybinių nišų persidengimas. Šaltuoju periodu smulkūs žinduoliai ir kanopinių dvėseliena yra pagrindinis šių plėšrūnų maistas. Labai svarbus usūrinių šunų maisto komponentas yra javai ir vaisiai. Žiemą lapių mityboje dar labiau svarbesni tampa kiškiai ir kanopinių žinduolių arba naminių gyvulių dvėseliena ir skerdiena. Per pus mažiau, šiuo metų laiku lapės minta augalinės kilmės maistu (vaisiai, javai, žoliniai augalai). Mitybinių nišų plotis ir persidengimas... [toliau žr. visą tekstą]The diet composition of red fox (Vulpes vulpes L.), raccoon dog (Nyctereutes procyonoides Grey.), using stomach analysis, and the morphometrical differences of red fox (Vulpes vulpes L.) were studied in Lithuania. Forty-three males and twenty-eight females of red fox were measured at the 5 measurement points. Furthermore, eighty eight red foxes and forty one raccoon dog skulls were measured at the 16 measurement points, mandibles at the 3 measurement points.5 statistically significant differences in measurements of red fox body were obtained between males and females. Eight skulls and one mandible features of the male foxes were statistically significantly longer compared to the same females foxes features. Five statistically significant differences were found between skull measurement point and one statistically significant difference between mandible measurement points of raccoon dog. Furthermore fifteen significant differences were found between measurements in males and fourteen between measurements in females. The frequency of occurrence and relative capacity were evaluated. In the cold season (November-February), small mammals and carrion of ungulates was the principal food of both predator species. For the raccoon dog plants were an important food component too.
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Heidrich, Jana. "Untersuchungen zur Prävalenz von Borrelia burgdorferi sensu lato beim Rotfuchs (Vulpes vulpes) in Ostbrandenburg." [S.l.] : [s.n.], 2000. http://www.diss.fu-berlin.de/2000/155/index.html.
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Jurgelėnas, Eugenijus. "Lietuvoje besiveisiančių usūrinių šunų (Nyctereutes procyonoides) ir rudųjų lapių (Vulpes vulpes) skeleto morfologinė analizė." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2010. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2010~D_20100511_132927-56877.
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Darbo tikslas: atlikti palyginamąją rudųjų lapių ir usūrinių šunų kaukolių, ilgųjų ir plokščiųjų galūnių kaulų osteologinę ir osteometrinę analizę.
Darbo uždaviniai: 1. Išmatuoti ir palyginti usūrinių šunų ir rudųjų lapių patinų ir patelių kaukoles su apatiniais žandikauliais, krūminius dantis, plokščiuosius galūnių kaulus – mentę ir dubens kaulus ir ilguosius galūnių kaulus – petikaulį, dilbio kaulus, šlaunikaulį ir blauzdos kaulus. 2. Naudojantis gautais matmenimis atlikti tarprūšinį usūrinių šunų ir rudųjų lapių kaukolių su apatiniais žandikauliais, krūminių dantų, plokščiųjų galūnių kaulų – mentės ir dubens kaulų ir ilgųjų galūnių kaulų – petikaulio, dilbio kaulų, šlaunikaulio ir blauzdos kaulų palyginimą. 3. Apskaičiuoti kaukolių ir nurodytų ilgųjų galūnių kaulų – petikaulio, stipinkaulio, šlaunikaulio ir blauzdikaulio indeksus ir atlikti šių indeksų palyginimą tarp lyčių ir tarp tirtų gyvūnų rūšių. 4. Atlikti tarprūšinį kaukolių su apatiniais žandikauliais, plokščiųjų galūnių kaulų – mentės ir dubens kaulų, ilgųjų galūnių kaulų – petikaulio, dilbio kaulų, šlaunikaulio ir blauzdos kaulų morfologinį tyrimą palyginamosios anatomijos metodu. 5. Nustatyti tarprūšinius rudųjų lapių ir usūrinių šunų kaukolių vidinių struktūrų ir kaktikaulio ančių morfologinius ypatumus naudojant kompiuterinės tomografijos metodą.
Pirmą kartą Lietuvoje atlikta palyginamoji usūrinių šunų ir rudųjų lapių kaukolių ir galūnių kaulų morfologinė analizė. Laukinės faunos osteologiniuose tyrimuose... [toliau žr. visą tekstą]The aim of the present study is: to carry out a comparative osteological and osteometric analysis of skulls and long and flat bones of extremities of red foxes and raccoon dogs. The tasks include: 1. Measuring and comparison of the bones of male and female red foxes and raccoon dogs: skulls with jawbones, molars, the flat bones of extremities – scapula and pelvic bones – and the long bones of extremities – humerus, forearm, femur and crural bone. 2. Comparison of the bones of raccoon dogs and red foxes based on the obtained osteometric data about: skulls with jawbones, molars, the flat bones of extremities – scapula and pelvic bones – and the long bones of extremities – humerus, forearm bones, femur and crural bone. 3. Calculation of the indices of skulls and the indicated long bones of extremities – humerus, radius, femur and tibia – and comparison of these indices in the studied animals of different gender and species. 4. Morphological analysis of the bones – skulls with jawbones, the flat bones of extremities (scapula and pelvic bones) and the long bones of extremities (humerus, forearm, femur and crural bone) – of the studied species of animals by the method of comparative anatomy. 5. Determining the morphological features of the bones – internal structure of the skulls and frontal sinuses – of the studies species of animals (red foxes and raccoon dogs) by the method of computer tomography. The present work is a first attempt of comparative morphological analysis of the... [to full text]
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Webbon, Charlotte Claire. "The distribution, abundance and diet of the red fox (Vulpes vulpes) in rural Britain." Thesis, University of Bristol, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.412323.
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Nimmervoll, Helena. "Sarcoptic mange in red foxes ("vulpes vulpes") from Switzerland : pathological characteristics and influencing factors /." [S.l.] : [s.n.], 2007. http://www.zb.unibe.ch/download/eldiss/07nimmervoll_h.pdf.
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Forbes-Harper, Jesse. "Ecomorphology of the skulls of red foxes (Vulpes vulpes) from south-west Western Australia." Thesis, Forbes-Harper, Jesse (2010) Ecomorphology of the skulls of red foxes (Vulpes vulpes) from south-west Western Australia. Honours thesis, Murdoch University, 2010. https://researchrepository.murdoch.edu.au/id/eprint/30054/.
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The diet of predators has a very strong influence on their morphology, and this is particularly true of their skulls. Ecomorphology is the prediction of an animal’s ecology from its morphological features. Cranial specializations in particular enable us to predict both diet and feeding behaviour, which are tightly linked. Foxes are introduced predators in Australia, and are controlled because of their detrimental effects upon native wildlife and livestock. Their impact is particularly severe in the biodiversity hotspot of the south-west. We collected samples from over 500 red foxes from 16 locations during culls carried out as part of the Red Card for the Red Fox program 2010, coordinated by the Department of Agriculture WA. Skull morphology (size, shape, weight, and tooth wear) was investigated and correlated with age, sex, geographic location, body mass and length, and environmental variables. Fox morphology data is analysed and interpreted, with a focus on the parameters above. By far the majority of animals that are shot by hunters are juveniles that are dispersing from their natal sites; adults are either less common or (more likely) far too smart to be tracked and shot. Adult foxes were found to have significantly more robust and heavy skulls than juveniles, whilst most other dimensions are in proportion (scale isometrically) with skull size. Skull robustness was found to significantly vary with geographic locations. Increased skull robustness may widen fox dietary options, although it is difficult to attribute this variation to the environmental variables investigated. Future directions in which to take fox ecomorphology research are suggested.
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Wandeler, Peter. "Spatial and temporal population genetics of Swiss red foxes (Vulpes vulpes) following a rabies epizootic." Thesis, Cardiff University, 2004. http://orca.cf.ac.uk/54549/.
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Infectious disease can affect the demography of natural populations and, as a consequence, can alter the genetic variation within and between those populations. This study investigated long-term effects of rabies-induced mortality on the demography and genetic variation in two Swiss red fox populations over ten to fourteen generations. In Switzerland, the last rabies epizootic persisted from 1967 to 1999 and was continuously monitored by collecting fox carcasses throughout the country. Alongside records of rabies tests and post-mortem data, tooth samples were systematically archived for ageing. In this study, DNA from 666 individual teeth was extracted. For 279 extracts, the concentration of nuclear DNA was estimated in a quantitative PCR and found to be negatively correlated with storage time. After excluding samples with insufficient DNA concentration for reliable genotyping, 382 samples were screened using between nine and seventeen canine and red fox specific microsatellites. Tooth samples were combined with 189 modern tissue samples. By assessing the age structure continuously throughout and after the rabies epizootic for the first population, population census size and age structure were found to be altered by the high rabies-induced mortality. In contrast, no long-term trends in genetic diversity were identified although a high variation of Ho, He, F s was discovered both in short-term and longer-term. A strong isolation-by-distance pattern was revealed for the second population by comparing individual pairwise genetic with spatial distances using modern samples. Furthermore, genetic data demonstrated that dispersal was sex-biased and diverted by the topography of the landscape. When investigating isolation-by-distance patterns within the same population in 1971-73 and 1982-84 at lower population densities, density-dependant dispersal was observed. In conclusion, this study revealed no loss of genetic diversity in red foxes following a rabies epizootic despite a population bottleneck, yet highlights population density as an important factor to determine local spatial genetic structure.
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Ansell, Rachel J. "The spatial organisation of a red fox (Vulpes vulpes) population in relation to food resources." Thesis, University of Bristol, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.411100.
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Pires, José Paulo Esmeriz. "Ecologia alimentar da raposa [Vulpes vulpes (Linnaeus 1758)] no Parque Natural da Serra da Estrela." Master's thesis, Universidade do Porto. Reitoria, 2001. http://hdl.handle.net/10216/10128.
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Nowicki, Włodzimierz. "Zmienność odgałęzień aorty u lisa pospolitego (Vulpes vulpes L.) i jedo odmiany hodowlanej lisa srebrzystego." Rozprawa doktorska, [Nakł.aut.], 2002. http://dlibra.utp.edu.pl/Content/271.
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Celem prowadzonych badań było prześledzenie zmienności morfologicznej jak również zmienności morfometrycznej gałęzi aorty w szczególności obszaru łuku aorty i aorty brzusznej . Również celem było określenie różnic w budowie aorty i jej odgałęzień między dzikożyjącą i udomowioną formą lisa pospolitego
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Alvarez-Betancourt, Sandra. "Juvenile behavioural development and intra-litter hierarchy establishment in captive red fox cubs (Vulpes vulpes)." Thesis, University of Bristol, 2016. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.702912.
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Pires, José Paulo Esmeriz. "Ecologia alimentar da raposa [Vulpes vulpes (Linnaeus 1758)] no Parque Natural da Serra da Estrela." Dissertação, Universidade do Porto. Reitoria, 2001. http://hdl.handle.net/10216/10128.
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Vanak, Abi Tamim Gompper Matthew Edzart. "Intraguild interactions between native and domestic carnivores in central India." Diss., Columbia, Mo. : University of Missouri--Columbia, 2008. http://hdl.handle.net/10355/6640.
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Title from PDF of title page (University of Missouri--Columbia, viewed on March 17, 2010). The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file. Thesis advisor: Dr. Matthew E. Gompper. Vita. Includes bibliographical references.
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Berghout, Mani, and n/a. "The ecology of the red fox (Vulpes vulpes) in the Central Tableslands of New South Wales." University of Canberra. Resource, Environmental & Heritage Sciences, 2000. http://erl.canberra.edu.au./public/adt-AUC20060331.085450.
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The red fox occurs across a very broad range of habitats, and displays great behavioural flexibility under different environmental conditions. In Australia, mounting concern over the impacts of foxes on livestock and native fauna has highlighted a need for more information on fox ecology under Australian conditions as a fundamental step towards developing more strategic means of managing foxes. This study explores ranging behaviour, dispersal, use of dens, activity rhythms, population dynamics and diet in the absence of management in productive agricultural land in the central tablelands of New South Wales. The study was conducted from June 1994 to June 1997 on private property near Murringo, NSW Australia (34°15� S, 148°30� E). The site was primarily sheep and cattle grazing land and had a history of no fox management. Rainfall was considerably below average for much of the study. A total of 83 foxes were trapped over 3931 trapnights, of which 50 were fitted with radio-collars (23 adult and 6 juvenile females, 12 adult and 9 juvenile males) and 26 released with eartags only (all juveniles: 10 females, 16 males). Thirty-three foxes were radio-tracked using fixed towers between March 1995 and December 1996, with between 11 and 28 foxes tracked at any time. Mean home range size was 446.1 ha ± 69.8 se using 95% Minimum Convex Polygons (MCP), and 276.4 ha ± 36.3 se using 95% kernel utilisation distributions. Male home ranges defined by MCP were significantly larger than female ranges, but no significant difference was found using 95% kernels. Core ranges were estimated to be 133.4 ha ± 23.7 se using 50% MCP and 59.8 ha ± 6.1 se using 95% kernels, with no significant difference between sexes. No significant differences were found between range sizes of adults and juveniles or between years or seasons. While most home ranges were steady for the duration of the study, some foxes were observed to shift range location and 4 foxes displayed nomadic behaviour for at least some of the study. There was a high incidence of overlapping home ranges, most commonly between females or males and females but occasionally between males, but core areas were usually separate. Fully overlapping core areas were observed in 1995 but not in 1996.
Juvenile foxes were significantly more likely to disperse than adults, and usually travelled further (juveniles 61.1 km 31.6 ± se; adults 5.9 km 1.1 ± se). Males and females were equally likely to disperse, and there was no significant difference in the distance travelled. The furthest distances were 285 km and 140 km, but mean distance of dispersal excluding these animals was 12.3 km ± 4.3 se (n = 13). Thorough surveys across a 16.4 km² area located 200 dens, with 68 of these active in 1995 and 96 active in 1996. Density of breeding foxes was estimated to be 0.55 and 0.52 adult foxes/km² in 1995 and 1996 respectively based on natal den counts. Density estimates based on active den counts, which include non-breeding foxes, were 0.91and 1.30 foxes/km² in 1995 and 1996 respectively. These estimates appear lower than other studies in similar habitats but this is likely due to using a half home range boundary strip around the surveyed area in the present study. Application of mark-recapture analysis found very high �recapture� rates of dens and gave a similar estimate of the total number of dens to that observed directly. Natal dens were regularly distributed across the study area, whereas active dens tended to be in clusters. There was a high turnover of which dens were used each year, but the total number of natal dens was similar across years (16 in 1995 and 17 in 1996). Natal dens were more likely to be used on repeat occasions than other dens, but not necessarily by the same vixen. Litter size based on sightings of emergent cubs was 2.8. Foxes were predominantly nocturnal, with a major peak in activity about an hour after sunset. A new method of analysing activity rhythm data using Fourier series to mathematically describe animal movements was developed, that allowed systematic identification of the cyclical components underlying overall movement patterns. General fox behaviour could be clearly described by a 24-hour and a 12-hour cyclical component when corrected for variation in daylength. The rising and setting of the sun appeared to be a major trigger underlying movement patterns. Seasonal and sex differences were observed in patterns of activity. The annual rate of increase of the fox population was found to vary around a mean of zero between June 1994 and June 1997. A major drop in fox numbers as estimated by spotlight counts occurred in the second half of 1995, but numbers recovered by the
end of 1996. Kaplan-Meier analysis of radio-tagged foxes found annual adult survival was generally very high (0.56-0.96) with lowest survival between July and October. Causes of mortality were human-related outside the site and apparently of natural causes within the site. However foxes dying of natural causes outside the site were unlikely to be found. There was no overall movement of foxes into or out of the site. Immigration was detected following the drop in fox numbers in late 1995, but there was no evidence of immigration prior to this period although emigration occurred. A sensitivity analysis was conducted on the effects of a small change in life history parameters on finite rate of increase using published data as well as adult mortality data from the present study. The two most influential life-history parameters were adult and juvenile survival, while changes in fecundity and age at first reproduction had much less impact on finite rate of increase. In terms of management, in which fertility control is being considered as an alternative to lethal control, this implies that a small change in fecundity may cause less change in the rate of increase of foxes than lethal control. Foxes were culled in June 1997 on completion of the study. Estimated density using a Petersen estimate was 2.4-5.3 foxes/km² and index-manipulation-index was 1.4-3.2 foxes/km². The different methods used to cull foxes appeared to target different age groups within the population, and were generally biased in favour of younger foxes. Success at killing animals was low, leading to large standard errors in the population estimates. Stomachs of foxes shot in the Orange district were found to contain predominantly rabbit and carrion, with invertebrates present when abundant. These findings were not strictly representative of the diet of foxes in the study area, where rabbits were scarce. Foxes scavenged heavily on lamb carcasses within the study site. The quantity of fresh lamb carrion removed from a lambing paddock in winter 1996 was estimated to support 13-24 foxes, with available fresh lamb theoretically able to support 240-440 foxes. Density based on removal of fresh carcasses was estimated to be 0.83-1.5 foxes/km².
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Baker, Sandra E. "Developing aversion management techniques for use with European badgers Meles meles and red foxes Vulpes vulpes." Thesis, University of Oxford, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.275371.
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Looney, D. J. P. "The ecology of the red fox Vulpes vulpes in relation to sheep farming in County Antrim." Thesis, Queen's University Belfast, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.391104.
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Furlong, Michael John. "The impact of a generalist predator, the red fox (Vulpes vulpes), on its main prey populations." Thesis, University of Bristol, 2000. http://hdl.handle.net/1983/927e8373-6f96-4637-a525-0ca219c900e7.
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Janko, Christof [Verfasser]. "Verhalten des Rotfuchses (Vulpes vulpes) in Dörfern und Kleinstädten als epidemiologischer Faktor der Alveolären Echinokokkose / Christof Janko." Aachen : Shaker, 2013. http://d-nb.info/1051575109/34.
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Lefebvre, Christine. "Variations annuelles de la composition corporelle et des hormones de reproduction chez le renard roux, Vulpes vulpes." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq26234.pdf.
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MATHON, FRANCOIS. "L'helminthofaune intestinale du renard roux (vulpes vulpes) en alsace : bilan d'une etude sur 8 ans (1983-1991)." Strasbourg 1, 1991. http://www.theses.fr/1991STR15087.
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Mole, Antónia da Conceição dos Reis Pão. "Contribution to the knowledge of selected parasitic infections in red-foxes (Vulpes vulpes) of the Alentejo area." Master's thesis, Universidade de Évora, 2010. http://hdl.handle.net/10174/20776.
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Esta dissertação foi desenvolvida no âmbito do mestrado em Biologia da Conservação e resultou da ligação entre a Biologia e a vigilância sanitária. Durante a época de caça foram capturadas vinte e cinco raposas-vermelhas na região do Alentejo, tendo sido submetidas a provas serológicas para detecção de presença de Leishmania infantum, Toxoplasma gondii e Neospora caninum. Este estudo de vigilância permitirá inferir sobre a saúde do ecossistema e sobre reservatórios de doença tanto para animais silvestres ameaçados, como o lince ibérico, assim como para mamíferos domésticos e para o próprio Homem. Foram detectados, com ELISA, anticorpos anti-L infantum em 5.6% dos animais, anticorpos anti-T. gondii em 50% dos animais, com IFAT e MATe finalmente anticorpos anti-N. caninum em 16.7% das raposas, com IFAT. - ABSTRACT: The present project was developed as an investigation for a master's dissertation in Biology Conservation, a study that links Biology and health surveillance. Twenty-five foxes were obtained during hunting season and serological tests were used to assess the presence of Leishmania infantum, Toxoplasma gondii and Neospora caninum in the red-fox from the Alentejo area; this descriptive surveillance study provides a first insight into the health of the ecosystem and reservoirs of diseases both to endangered sympatric wild species, such as the lberian lynx, and to domestic mammals and even humans. lt's important to better understand the threat and potential impact that disease agents might pose for the conservation of endangered species. Anti-L infantum antibodies were detected by ELISA in 5.6% of the animals, anti-T. gondii antibodies were identified by IFAT and MAT in 50% of the animals; finally, anti-N. caninum antibodies were detected by IFAT in 16.7% of the foxes.
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Dybing, Narelle. "Gastro-intestinal parasites of red foxes (Vulpes vulpes) and feral cats (Felis catus) in southwest Western Australia." Thesis, Dybing, Narelle (2010) Gastro-intestinal parasites of red foxes (Vulpes vulpes) and feral cats (Felis catus) in southwest Western Australia. Honours thesis, Murdoch University, 2010. https://researchrepository.murdoch.edu.au/id/eprint/13313/.
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Red foxes (Vulpes vulpes) and feral cats (Felis catus) are present throughout a wide range of habitats and landscapes across much of Australia. In addition to the competition and predatory impacts of these two pest species, red foxes and feral cats harbour a wide range of parasites, many of which may have important conservation, agricultural and zoonotic repercussions. This project investigated the occurrence of helminth parasites from the intestines of 147 red foxes and 47 feral cats collected from 14 and 11 locations respectively, throughout southwest Western Australia.
Helminth parasites were detected in 58% of foxes and 81% of cats. Helminth species identified from red foxes were: Dipylidium caninum (27.7% of individual foxes examined), Uncinaria stenocephala (18.2%), Toxocara canis (14.9%), Spirometra erinaceieuropaei (5.4%), Toxascaris leonina (4.7%), Taenia spp. (4.1%), Taenia serialis (1.4%), Taenia hydatigena (0.7%), Brachylaima cribbi (0.7%), Plagiorchis maculosus (0.7%) and an Acanthocephalan identified to family Centrorhynchidae (2.1%). Helminth species identified from feral cats were: Taenia taeniaeformis (39.1% of individual cats examined), Toxocara cati (34.8%), Spirometra erinaceieuropaei (19.6%), Oncicola pomatostomi (15.2%), Toxascaris leonina (6.5%), Dipylidium caninum (6.5%), Ancylostoma spp (2.2%) and the Acanthocephalan Centrorhynchidae (2.2%).
Infracommunity richness varied from 1-3 and 1-4 species per host in red foxes and feral cats respectively. Average parasite burdens varied from 1-39 worms across all helminth species. Several environmental factors were significantly related to the presence of some parasites in red foxes. For red foxes, the percentage remnant vegetation cover at each sampling location was significantly positively correlated with the presence of T. canis and U. stenocephala (p<0.001). Average relative humidity was significantly positively correlated with the presence of S. erinaceieuropaei (p<0.001), T. leonina (p<0.01) and U. stenocephala (p<0.01). Five year average minimum temperature had an effect on S. erinaceieuropaei and U. stenocephala (p<0.001). For feral cats, a significant positive correlation was detected between the presence of T. cati and five year annual rainfall (p<0.001) as well as individual head/body length and T. taeniaeformis (p<0.001).
Helminth species associations were detected between U. stenocephala and D. caninum, S. erinaceieuropaei, T. canis and T. leonina in red foxes. A significant association was also detected between S. erinaceieuropaei and T. leonina in red foxes. In feral cats helminth species associations were detected between T. taeniaeformis and O. pomatostomi as well as between T. taeniaeformis and T. cati. The only parasite that was positively correlated with body condition (assessed by body mass) was S. erinaceieuropaei in foxes. The species richness within a host was not observed to affect body condition in either foxes or cats.
In conclusion, red foxes and feral cats in southwest Western Australia harbour a wide range of helminth parasites, which are of veterinary significance for wildlife and livestock. Control of red foxes and feral cats in this region may therefore provide an important mechanism of control of these parasites. Importantly, Echinococcus granulosus, a parasite of major zoonotic concern, was not recorded in this study.
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Papečkienė, Vaiva. "Gyvūnų žūvimas kelyje Vilnius - Dūkštos." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2009. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2006~D_20090908_193913-41590.
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Per pusantrų metų 26 km ilgio kelyje Vilnius–Dūkštos užregistruota 378 žuvę gyvūnai, iš jų 44 žinduoliai (6 laukinių ir 3 naminių gyvūnų rūšys), 1 paukštis ir 333 varliagyviai (rudosios Rana genties varlės). Rastas 21 suvažinėtas baltakrūtis ežys, 8 katės, 4 šunys, 4 akmeninės kiaunės, 2 rudosios žiurkės, 2 geltonkaklės pelės, 1 lapę, 1 pilkasis kiškis ir 1 karvė. Varliagyviai masiškai žūva migruodami iš žiemojimo vietų į nerštavietes. Tiek 2005, tiek 2006 metais masinis rudųjų varlių žuvimas kelyje Vilnius–Dūkštos užregistruotas balandžio pirmąjį dešimtadienį. Daugiausia žinduolių ant kelio buvo suvažinėta šiltuoju metų laiku – rugpjūčio, gegužės ir rugsėjo mėnesiais. Kadangi gyvūnai ant kelių registruojami rytą, dauguma jų suvažinėjami tamsiu paros metu. Daugiausia žinduolių (27%) suvažinėta tose vietose, kur kelią supa krūmynai, 23% - gyvenvietėse ir miesteliuose, 20% – keliui einant pievomis ir 18% – pamiškėse. Kitų biotopų reikšmė gyvūnų žuvimui kelyje Vilnius–Dūkštos buvo nedidelė – miške užregistruota tik 9% žuvusių žinduolių. Ežiai ir varliagyviai suvažinėjami visame Vilnius–Dūkštos kelio ruože: varliagyviai – ties grioviais, upeliais, laukų pelkutėmis ir ten, kur kelią supa šlapi krūmynai, ežiai – kai kelias eina pievomis ir krūmuotomis vietomis. Ištirtoje kelio atkarpoje trūksta apie susidūrimą su gyvūnais perspėjančių kelio ženklų, pavojingose vietose nėra ribojamas greitis. Šios priemonės leistų sumažinti gyvūnų žuvimą.Animal roadkills on the road were partly conditioned by overspeeding and insufficient number of the road signs. Our results show, that animal roadkills are quite big compared to the short road segment. In the foreign countries problems of the animal roadkills receive more attention, as except damage done to the nature, there are problems of safety, material losses and possible charges to a road service if warning road signs were absent. Object of this investigation were animals, killed on the road Vilnius–Dūkštos (segment length – 26 km). Aim this work was to evaluate species composition of the killed animals, seasonality and influence of the surrounding habitats. Investigation was done while driving this segment twice per day and registering animals killed. Rules of the road were obeyed – no stops under sign or interrupting other vehicles, thus, not all of the killed animals were collected or pictures taken. Places of the roadkills were mapped. In the period of 2004.11.01–2006.05.01number of killed animals was 378; out of these 44 mammals, 1 bird (young Tawny Owl) and 333 amphibians (common/moor frogs). Biggest number of mammal roadkills was done in the dark period of the day and in August–September, while that of amphibians – in April. No kills were registered in January and February. Species composition of mammals: 21 hedgehogs, 4 stone martens, 2 yellow-necked mice, 2 brown rats, 1 fox, 1 brown hare, 8 cats and 4 dogs. According our results and literature analysis... [to full text]
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Gentle, Matthew Nikolai. "Factors Affecting The Efficiency Of Fox (Vulpes Vulpes) Baiting Practices On The Central Tablelands Of New South Wales." University of Sydney, 2005. http://hdl.handle.net/2123/890.
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Doctor of Philosophy(PhD)The European red fox (Vulpes vulpes L.) is a well known predator of native species and domestic stock, and is recognised as one of Australia’s most devastating vertebrate pests. Current fox management relies heavily on poisoning using baits impregnated with sodium monofluoroacetate (1080). This reliance on 1080 is likely to continue given the lack of viable alternatives for controlling foxes, so that, in the meanwhile, it is important to improve the efficiency of the current techniques. Factors affecting the susceptibility of individual foxes to bait include their ability to locate it, as well as the bait’s palatability and toxicity. The economic costs associated with using different bait types, the pattern and density of their distribution will also affect the efficiency of control programs. It is essential to examine and refine all such issues to ensure efficient use of the 1080 baiting technique. This thesis focuses generally on problems associated with management of the fox in eastern Australia. More specifically, I investigate the factors affecting the efficiency of fox baiting practices on the central tablelands of New South Wales. The study was conducted largely on agricultural lands near the town of Molong (33010’ 37”S, 148087’15”E) on the central tablelands of New South Wales. This area was chosen as it is broadly representative, in terms of land use, of a large region of eastern Australia. The highly modified, predominantly agricultural landscapes near Molong are well suited to foxes, and conflict with the predominantly pastoral community means that fox management is widely undertaken. I determined the persistence of 1080 in two commonly used bait types, Foxoff® and chicken wingettes, under different climatic and rainfall conditions. The rate of 1080 degradation did not change significantly between the central tablelands and the relatively hotter and drier western slopes. Foxoff® baits remained lethal for longer than wingettes under all conditions, although their rate of degradation generally increased with increasing rainfall. I confirmed the presence of defluorinating micro-organisms in thesoils of eastern Australia for the first time, and suggest that, following removal from the bait, 1080 would not persist in the environment for long. Bait should be attractive and highly palatable to ensure that the target species will find and consume it upon discovery. Caching, where discovered food is removed but not immediately consumed, may potentially reduce the efficacy and cost-effectiveness of baiting campaigns. I quantified the caching of chicken wingette, day-old chick and Foxoff® baits by inserting transmitters into bait material and assessing whether it was eaten or cached following removal. The intensity of caching did not change significantly between seasons. Type of bait had the largest influence on caching intensity, with a greater percentage of non-toxic Foxoff® baits (66.9%) being cached than either wingettes (5.7%) or day-old chicks (4.5%). The percentage of toxic (1080) baits cached was even greater, suggesting that 1080 bait may be less palatable, and detectable to foxes. I also investigated the use of conditioned taste aversion to reduce multiple bait uptake by foxes. Levamisole, an illness-inducing chemical, was added to bait and the fate of removed bait was again monitored via radio-telemetry. Following consumption of a levamisole-treated bait, foxes avoided eating treated baits but consumed untreated baits. I concluded that a reduction in bait consumption was achieved through learned aversion to levamisole rather than via conditioned taste aversion to baits. Adding levamisole to baits, especially non-toxic bait such as rabies vaccines, could potentially be used to reduce bait monopolisation by individual foxes. Fox density and den site preferences were assessed by investigating the distribution and density of fox natal dens on one property (9.6 km2) over three consecutive years. A total of 9 natal dens were located in 2000 and 2001, declining to 6 in 2002. No preference was shown for den sites on the basis of habitat, slope or aspect, but more dens were located under, or adjacent to cover. Assuming that each natal den represents a breeding pair and that the population sex ratio did not differ from parity (1:1), the site contained a prebreeding density of 1.9 foxes/km2 in 2000 and 2001, and 1.25 foxes/km2 in 2002. Given that the mean number of cubs is 4.0, the post-breeding density was estimated at 5.6 and 3.75 foxes/km2 in 2000/2001 and 2002, respectively. The results demonstrated that high densities of foxes occur on agricultural lands. The success and likely accuracy of the technique to monitor fox density suggests that it may be used to calibrate more efficient abundance estimates that will be essential for the strategic management of foxes in future. Pest animal management strategies are traditionally assessed for their effectiveness, with less consideration being given to the efficiency or cost of achieving the desired effect. I used cost-effectiveness analyses to compare between different baiting strategies based on the longevity, palatability and handling/replacement costs associated with each bait type. The results indicated that, when measured on a total cost-per-bait-consumed basis, wingettes and day-old chicks were the most cost-effective baits for campaigns of up to 4 weeks duration. This demonstrates the importance of including the longevity, and particularly the palatability of bait, when assessing cost-effectiveness. However, it is recognised that other factors, including the consistency of dosage and uptake by nontarget species, may be equally or more important in deciding the appropriate baiting strategy. The spatial and temporal application of fox baiting in the region overseen by the Molong Rural Lands Protection Board was examined between January 1998 and December 2002 as a case study to evaluate the apparent effectiveness of cooperative management practices. Most landholders (78.8%) did not bait for foxes during this period. Based on known dispersal distances, the effect of fox immigration into baited areas was determined. The results indicated that no areas baited for foxes were separated by a sufficient buffer distance (>9.58 km) from unbaited areas to be protected from fox immigration. This suggests that, at current levels of coordination, the effectiveness of most baiting operations in eastern Australia is compromised over the long term by fox immigration. However, it is recognised that short-term reductions in fox density may sometimes be all that are required to reduce predation to acceptable levels, especially for seasonally-susceptible prey. Ultimately, the cost-effectiveness of control should be evaluated in terms of the response of the prey rather than that of the predator. This study has highlighted deficiencies in current ‘best-practice’ baiting techniques. Specific recommendations for current baiting practices, in addition to future research, are also given. In brief, these include minimising free-feed baiting, increasing the minimum distance between bait stations, and, where possible, presenting the most palatable bait. Continued research into conditioned taste aversion, aerial baiting, and techniques to reduce caching are recommended as potential techniques to improve the efficiency of baiting practices.
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Richards, David Trevor. "The epidemiology of the ascarid nematode Toxocara canis and other intestinal helminths in the red fox (Vulpes vulpes)." Thesis, Royal Holloway, University of London, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.243254.
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Spencer, Ricky-John. "The Murray River Turtle, Emydura macquarii: Population Dynamics, Nesting Ecology and Impact of the Introduced Red Fox, Vulpes vulpes." University of Sydney. Biological Sciences, 2001. http://hdl.handle.net/2123/373.
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I studied aspects of the ecology of the Murray River turtle, Emydura macquarii, to determine the impact of the introduced red fox, Vulpes vulpes. The fox is one of Australia's worst vertebrate pests through its predation on livestock and native mammals, but their impact on reptilian communities is not known. I conducted a large-scale mark-recapture study to evaluate population growth of E. macquarii in the Albury region of the upper Murray River by determining growth, reproduction and survival. The study was conducted downstream of the first, and largest, impoundment on the Murray River, Lake Hume. Emydura macquarii predominantly inhabit the lagoons in the upper Murray River, as the mainstream and Lake are possibly too cool to maintain metabolic processes. They are easily captured in hoop traps and the use of live decoys maximises trap success. Over 2000 hatchling turtles were marked and released into two lagoons between January 1997 and January 1998. Growth of these individuals is rapid over the first few years but declines towards maturity, and is indeterminate after maturity. Although growth annuli are not well defined, even on young individuals, the von Bertalanffy model describes the growth of both male and female E. macquarii. Male turtles mature at 5-6 years and females mature at 10-12 years. Female turtles may maximise reproductive potential by delaying maturity and producing one relatively large clutch (mean = 21 eggs) per year, which is positively correlated with body size (PL). Although primarily related to body size, clutch size varies annually because of environmental conditions. If winter and summer rainfalls are below average and temperatures are above average, E. macquarii may reduce clutch size to increase the chance of the eggs surviving. Nesting predominantly occurs during the first major rain-bearing depression in November. Habitat variables, including distance from water, nearest nest, and tree, and soil type were measured for each nest to determine characteristics that attract predators. Nests close to the shoreline and trees are heavily preyed on, and nests constructed in sand are less likely to be destroyed by predators. Foxes detect nests through a combination of chemical cues from eggs and slight soil disturbances, whereas birds only destroy nests observed being constructed during the day. Female turtles alter nesting behaviour and construct nests much further away from water when foxes were removed and as a result, nests are less dense and away from trees. Thus in high predation risk areas, turtles minimise emergence and search times to reduce the risk of direct predation by foxes. Predation is reduced when nests are in lower densities and away from trees, because predators increase search efforts when nests are in higher densities and birds are more likely to destroy nests close to trees. Reproductive success is further reduced in high predation risk areas because more nests are constructed in sandy substrates where clutch success is reduced compared to incubation in more dense substrates. Where predators are a significant source of mortality, prey may use indirect methods, such as chemical recognition, to avoid encounters. Nesting turtles did not avoid areas where fox odour was present, suggesting that they assess predation pressure from foxes by other mechanisms, such as visual recognition. However, an innate response occurs to the odour of a once common predator on the Murray River, the eastern quoll (Dasyurus viverrinus), whereby turtles recognise and avoid nesting in areas where quoll odour is present. Therefore nesting turtles show a similar avoidance response to two different predators, using different mechanisms of detection. Similarly, predation risk may influence hatching times and nest emergence. The rate of embryonic development of E. macquarii may increase or eggs may hatch early so that the clutch hatches synchronously, thereby reducing the risk of predation through group emergence from the nest. Emydura macquarii reach densities of over 100 turtles.ha-1, with the majority of the population consisting of sexually mature individuals. Emydura macquarii has a Type III survival curve where mortality is extremely high in the egg stage (93% nest predation), remaining high over the hatchling stage (minimum survival rate- 10%), but decreasing rapidly throughout the juvenile stage (~70% juvenile survival). Adult survival is extremely high, with greater than 95% of adults surviving each year. Foxes through nest predation cause most mortality but a small proportion (~3%) of nesting adult females are killed by foxes each year. A removal program evaluated the impact of foxes. In 1996, fox numbers were monitored around four lagoons by spotlighting and non-toxic bait uptake. Foxes were removed from around two of the lagoons throughout 1997 and 1998, using spotlight shooting and 1080 bait poisoning. Fox numbers were continually monitored around all four lagoons during the study. Nest predation rates remained around 90% in all sites where foxes were present, but fell to less than 50% when foxes were removed. At the same time, predation on nesting female turtles was eliminated where foxes were removed. Demographic models using staged based survival schedules, together with growth and fecundity values for E. macquarii show a decline of 4% per year in these populations. Elasticity analyses shows that survival of adult female E. macquarii has the major influence on population stability and a reduction of nest predation alone is unlikely to address the population decline. Management options, such as reducing foxes prior to nesting around key lagoons, will stabilise the population decline, and eliminating foxes completely from certain areas with high dispersal potential, will promote recruitment of juvenile E. macquarii.
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Verica, Simin. "Ekologija i zoonotski potencijal nematode Capillaria aerophilaCreplin 1839 (Trichurida: Trichinellidae) kod crvene lisice (Vulpes vulpes L.) na području Vojvodine." Phd thesis, Univerzitet u Novom Sadu, Prirodno-matematički fakultet u Novom Sadu, 2014. https://www.cris.uns.ac.rs/record.jsf?recordId=85585&source=NDLTD&language=en.
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Imajući u vidu opasnost od zoonotske i antropozoonotske transmisije Capillaria aerophila po zdravlje životinja i ljudi, u ovom radu je ispitivana prevalencija kapilarijaze kod lisica poreklom sa različitih lokaliteta područja Vojvodine. Istraživanjem je bilo obuhvaćeno 146 leševa lisica. Uzorci lisica su prikupljani od decembra meseca 2009. do decembra meseca 2012. godine. Sagledavanjem rezultata patološke sekcije traheja i bronhija pluća 146 lisica, dobijena je izuzetno visoka prevalencija kapilarijaze od 77%, na osnovu čega se može zaključiti, da je područje Vojvodine novo područje u svetu sa izuzetno visokom prevalencom C. aerophila kod crvene lisice. Primenom koprološkog metoda ispitivanja kapilarijaza je dokazana kod 55 (41%) od ukupno 133 ispitivane lisice. Najveći broj lisica pozitivnih na prisustvo C. aerophila je bio iz Južnobačkog (24,7%) i Sremskog okruga (21,2%), a najmanji iz Južnobanatskog okruga (1,4%). Lisice Vojvodine su visoko infestirane kapilaridama. Ukupno je izolovano 1249 jedinki respiratorne nematode C. aerophila. Srednji broj nađenih parazita u traheji je bio 11,0, sa varijacijama od 1 do 60 kod pojedinih lisica. Među kapilaridama dominirale su ženke (67%), visoko reproduktivno sposobne, u odnosu na mužjake (33%). Korelativnom analizom između sezonskih količina padavina u Vojvodini i srednjeg broja nađenih adulta C. aerophila u traheji i bronhijama lisica utvrđeno je postojanje srednje značajne povezanosti. Patohistološkom analizom sluzokože traheja i tkiva pluća kod 14 lisica, nisu bile utvrđene značajne patološke promene. Ni u jednom slučaju nije bilo utvrđeno prisustvo parazitskih elemenata u tkivu pluća, koji bi ukazali na postojanje verminozne pneumonije kod lisica. Having in mind an animal or human health hazard from zoonotic and anthropozoonotic transmissions of Capillaria aerophila, this paper is investigating a prevalence of capillariasis in foxes from different sites in Vojvodina.Research included 146 fox corpses. Samples were gathered from December 2009 to December 2012. The resulting extremely high prevalence kapilarijaze of 77%, based on the results of pathologicalsections of the trachea and bronchi of the lung in 146 foxes, on the grounds thatit can be concluded that the area of Vojvodina new area in the world with an extremely high prevalence of C. aerophila in red foxes. Coprology proved capillariasis in 55 (41%) out of 133 examined foxes. The majority of positive foxes were from the South Bačka District (24,7%) and Syrmia (21,2%), and the smallest number of positive ones were from South Banat District (1,4%). Foxes in Vojvodina were highly infested with capillary worms. A total of 1249 C. aerophila nematode has been found. Average number of found parasites in trachea was 11,0 with variations from 1 to 60 in somefoxes. Among capillary worms, females prevailed (67%), very reproductivly capable, compared to males (33%). Correlative analysis showed the existence medium significance level of correlation between seasonal precipitation in Vojvodina, and the mean number found nematode C. aerophila in the trachea and bronchi fox. Pathohistology of tracheal mucosa and lung tissue in 14 foxes did not determine significant pathological changes. In neither one of the cases was determined the presence ofparasite elements in lung tissue, which would point to the existance of fox verminous pneumonia.
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Spencer, Ricky-John. "The Murray River turtle, Emydura macquarii population dynamics, nesting ecology and impact of the introduced red fox, Vulpes vulpes /." Connect to full text, 2000. http://hdl.handle.net/2123/373.
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Thesis (Ph. D.)--University of Sydney, 2001.Includes tables. Title from title screen (viewed Apr. 22, 2008). Submitted in fulfilment of the requirements for the degree of Doctor of Philosophy to the School of Biological Sciences, Faculty of Science. Degree awarded 2001; thesis submitted 2000. Includes bibliography. Also available in print form.
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Hofer, Heribert. "Patterns of resource distribution and exploitation by the red fox (Vulpes vulpes) and the Eurasian badger (Meles meles) : a comparative study." Thesis, University of Oxford, 1986. http://ora.ox.ac.uk/objects/uuid:18aae8d6-b540-46bb-87f0-3e0b296db609.
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Thirteen badgers and 20 foxes were radio-tracked in the Wytham Estate, Oxfordshire, between 1981 and 1983. Thirteen badger and 10 fox groups were identified from radio-tracking and bait marking. Badger groups (mean size 1982: 4.45, 1983: 5.82) occupied contiguous territories (size: 22-75 ha) with boundaries marked by latrines. Seasonal variation in marking intensity and choice of marking sites presumably were responses to changing intrusion pressure. Fox groups (mean size: 2.6) occupied stable territories (size: 22- 104 ha) with little overlap. Faeces deposition by foxes facilitated territory marking. Earthworms (Lumbricus terrestris) dominated the diet of badgers (63 % estimated dry weight EDW, faeces), followed by cereals, fruits and other Invertebrates. Diet was highly variable between groups and seasons. For foxes, lagomorphs (20 % EDW) and earthworms (33 % EDW) were the most important prey, followed by scavenge and fruits. Variation in diet between groups and seasons was marked in lagomorphs but not earthworms. Multlvarlate analyses of habitat parameters revealed a low-dimensional 'resource space' that could be divided into conventional habitat categories. Censuses of prey species indicated that resource presence varied consistently between habitat categories. Key habitats occurred at fairly constant proportions in territories of both species) their dispersion partly determined the configuration of territory boundaries. The proportions of specific habitats per territory were correlated with the proportions of certain prey items in diets. space use by individuals was analysed by spatial autocorrelation methods, variation in space use by foxes was attributed to variation in resource dispersion. In contrast, individual badgers were similar in their use of space. Here, small-scale heterogeneity in intensity of use may reflect local earthworm availability, in one studied fox group, males and females differed in range use. Individuals in one studied badger group coordinated their use of space probably to minimize foraging interference. It is suggested that group living in Wytham badgers is a response to defending resources, and a model is proposed to explain how the spatial and social organisation of male and female badgers relate to the characteristics of the resources they require.
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Verdier, Yann. "Sélection, identification et caractérisation partielle d'antigènes du spermatozoïde du renard (Vulpes vulpes) en vue de leur utilisation dans un vaccin contraceptif." Nancy 1, 2002. http://docnum.univ-lorraine.fr/public/SCD_T_2002_0307_VERDIER.pdf.
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