Dissertations / Theses on the topic 'Ridibundus'
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Hesp, Lee. "Age-related foraging behaviour in the black-headed gull (Larus ridibundus)." Thesis, University of Nottingham, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.238231.
Full textPickard, Kirsty. "Heavy metal pollution and blackheaded gull (Larus ridibundus L.) breeding ecology." Thesis, University of Southampton, 2010. https://eprints.soton.ac.uk/196435/.
Full textMcCulloch, Fiona M. "Reproductive behaviour in a small inland colony of black-headed gulls (Larus ridibundus)." Thesis, University of St Andrews, 1990. http://hdl.handle.net/10023/15061.
Full textFrancesiaz, Charlotte. "Sélection d'habitat et dynamique spatio-temporelle des colonies chez deux espèces de laridés : la mouette rieuse et le goéland railleur." Thesis, Montpellier, 2016. http://www.theses.fr/2016MONTT129/document.
Full textPopulation dynamics addresses the processes that underpin the spatio-temporal fluctuations of organism counts. My PhD dissertation aims at characterizing the connections between three organization levels in colonial bird populations, the individual, the colony, and the meta-colony, and at investigating the influence of the physical and social environments on this organization. To this aim, I focused on two colonial larid species that exhibit contrasted population dynamics: the black headed gull, Chroicocephalus ridibundus, and the slender-billed gull, Chroicocephalus genei. I first described the population dynamics of french slender-billed gull colonies, which are currently spreading along the Mediterranean coast. In spite of this expansion, individuals born in France return to their natal area to breed, but their age and sex modulate their recruitment and dispersal behaviours. I added-up to this first results by showing that nestling body condition, a major factor for recruitment, is affected by colony size, arrival date and parental foraging strategy. I further showed that slender-billed gulls gather into social groups whose stability is modulated by colony breeding success. The strength of inter-individual relationships within a colony is thus modulated by its intrinsic properties and its environmental context. Furthermore, I showed that, in black-headed gulls, colony persistance varies with local breeding success while colonization of new sites is mainly related to breeding success in neighbouring colonies. I conclude overall that the multiple organization levels of colonial bird populations, from the individual to the meta-colony, should be studied within integrative frameworks that represent novel conceptual, methodological and technical challenges at the crossroad between population dynamics and the study of social networks
Jones, M. J. "Aspects of the ecology and behaviour of black-headed (Larus ridibundus) and common gulls (Larus canus) on urban grassland." Thesis, University of Manchester, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.356108.
Full textMacKinnon, Gabriela Elisabeth. "Aspects of the ecology of the black-headed gull (Larus ridibundus) with comparative data on the common gull (L. canus)." Thesis, Durham University, 1987. http://etheses.dur.ac.uk/6857/.
Full textGrosbois, Vladimir. "La dispersion : trait d'histoire de vie et paramètre démographique : étude empirique dans une population de mouette rieuse Larus Ridibundus L." Montpellier 2, 2001. http://www.theses.fr/2001MON20151.
Full textAllaine, Dominique. "Le Rôle de la structure de colonie dans la biologie des populations d'oiseaux exemple de la mouette rieuse (Larus ridibundus) en Forez /." Grenoble 2 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb376112429.
Full textAllainé, Dominique. "Le rôle de la structure de colonie dans la biologie des populations d'oiseaux : exemple de la mouette rieuse (Larus ridibundus) en Forez." Lyon 1, 1988. http://www.theses.fr/1988LYO10177.
Full textPéron, Guillaume. "Dynamique des populations : apport de la modélisation intégrée à l’échelle du paysage et de la prise en compte de l’hétérogénéité individuelle dans les modèles de capture-recapture." Montpellier 2, 2009. http://www.theses.fr/2009MON20076.
Full textBetween the local and the landscape scales (several connected populations), population dynamics can vary from one extreme to the other. During this thesis work I was interested in two methods that provide more insight into the local and regional dynamics of a population of black-headed gull Chroicocephalus ridibundus studied by capture-recapture of marked individuals. Integrated population models combine the information from population surveys at the landscape scale and information from capture-recapture data, in order to obtain precise estimates for the demographic parameters, in particular the transfer rates between different sites. This method made it possible to prove the effect of the colony size on demography: emigration of young individuals, age at first reproduction, and attraction of adults. This pattern indicates that intra-specific competition is non-negligible on the largest colonies. From then on, one could expect individual heterogeneity, due to competitive ability, which adds to the sex-biased dispersal effect. It is possible to accommodate this heterogeneity of multiple origin using multievent models, in order to obtain well-fitted models, which can be used as a basis for further hypothesis testing, and to simultaneously correct for the bias induced by individual heterogeneity. I worked on senescence, the decline in survival with age, with an application of multievent models and a comparative analysis across 72 species of birds and mammals
Prévot-Julliard, Anne-Caroline. "Rôle de la dispersion dans la dynamique d'une population de mouette rieuse "Larus ridibundud L. "." Montpellier 2, 1996. http://www.theses.fr/1996MON20226.
Full textMourad, Rabih. "Analyse structurale des chaînes glycanniques des mucines oviducales spécifiques de l'espèce Rana ridibunda." Lille 1, 1999. https://pepite-depot.univ-lille.fr/LIBRE/Th_Num/1999/50376-1999-59.pdf.
Full textBaillat, Gilbert. "Caractérisation, solubilisation et purification du récepteur aux substances opioides de cerveaux de grenouilles "Rana ridibunda"." Grenoble 2 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb37611523v.
Full textBaillat, Gilbert. "Caracterisation, solubilisation et purification du recepteur aux substances opioides de cerveaux de grenouilles "rana ridibunda"." Toulouse 3, 1988. http://www.theses.fr/1988TOU30062.
Full textAkin, Cigdem. "Detection Of Species Boundaries In The Rana Ridibunda Complex Of Southwestern Turkey Using Mitochondrial Nd3 Marker." Master's thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/3/12608156/index.pdf.
Full textCeyhan lineage indicates an unnamed taxon in Cilicia plain
South-central lineage occurs at the Lake District, Antalya, Konya and Karaman provinces and represents Rana caralitana Arikan, 1988
Anatoliaca lineage (occuring in Asiatic Turkey except for central southern Turkey, Rhodes &
Karpathos, northeastern Syria, and probably also Iraq and Transcaucasia) is designated either as Rana cerigensis Beerli, Hotz, Tunner, Heppich, and Uzzell 1994 or as a new subspecies of R. caralitana, based on the degree of reproductive isolation present between the last two lineages.
Matson, Cole Wesley. "Combining environmental chemistry, somatic biomarkers, and population genetics: an innovative approach in wildlife ecotoxicology." Diss., Texas A&M University, 2003. http://hdl.handle.net/1969.1/72.
Full textAlexandre, David. "Etude structurale, fonctionnelle et anatomique du précurseur du neuropeptide PACAP et de ses récepteurs chez la grenouille Rana ridibunda." Rouen, 2002. http://www.theses.fr/2002ROUES028.
Full textPACAP is a neuropeptide that exerts important biological activities in vertebrates. In order to gain insight into the phylogeny, the structure/activity relationships, the mechanisms of action and the function of PACAP and its receptors, we have first characterized the precursor of this neuropeptide in a non-mammalian vertebrate, the frog Rana ridibunda. We have shown that the frog PACAP precursor encodes a second peptide termed GHRH-like peptide. These two peptides stimulate GH secretion from frog pituitary cells. Moreover, we have cloned two PACAP receptors in frog : a VPAC1 receptor which exhibits characteristics of the two mammalian VIP/PACAP receptors, and a PAC1 receptor which only recognizes PACAP. Finally, we have identified three PAC1-R isoforms, some of which display particular properties. These results contribute to the understanding of the PACAP-ergic system in vertebrates
Lamacz, Marek. "Etude in vitro des mécanismes de régulation des cellules de la pars intermedia de l'hypophyse de grenouille rana ridibunda." Rouen, 1990. http://www.theses.fr/1990ROUES005.
Full textOhst, Torsten. "Genetische Einflüsse allochthoner Wasserfrösche auf endemische Wasserfroschpopulationen (R. kl. esculenta Komplex)." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2008. http://dx.doi.org/10.18452/15857.
Full textAllochthonous water frogs have been introduced into Germany and other European countries. They compete with autochthonous water frogs and threaten the genetic integrity of native populations. In the present work the genotypes of 447 water frogs collected in Germany as well as 460 samples from various European countries have been determined and compared. In the complete dataset 56 ITS2- and 65 ND3-genotypes were identified. Among the 20 ITS2-alleles found in Germany, two indigenous and five introduced Rana ridibunda-like genotypes (relative frequency 7%) occurred. Five R. ridibunda alleles could not assigned as either indigenous or exotic. Among the 14 mitochondrial genotypes of the R. ridibunda-group three autochthonous and ten introduced (relative frequency 18%) variants could be identified, whereas the status of one mt-genotype remained unclear. Exotic alleles were mainly found in southwest Germany along the river Rhine and along the Ruhr in the Ruhr area. The wide distribution of a mitochondrial genotype previously known from Italian water frogs (R. bergeri) was ascertained in the region surrounding Karlsruhe. Allochthonous ITS2-alleles often occur heterozygously combined with autochthonous alleles. This is a strong evidence for cases of hybridisations between indigenous and introduced water frogs. Crossing experiments between autochthonous R. ridibunda and Anatolian water frogs (R. cf. ridibunda) revealed no reduced viability among the F1-hybrids. To evaluate the possible role of introduced water frogs on the dispersal of infectious diseases, detection tests of the amphibians-chytridiomycosis were carried out. The detection tests for its pathogen, Batrachochytrium dendrobatidis, on the tissue samples collected in Germany showed a prevalence of 6.3%. Most of the infected frogs were found in populations influenced by non-native water frogs. This points towards a possible relationship between introduction events and the occurrence of the pathogen.
Tostivint, Hervé. "Contribution à l'étude de l'évolution des gènes codant la somatostatine chez les vértébrés : mise en évidence chez les amphibiens et les dipneustes d'un nouveau variant de somatostatine muni d'un résidu proline en position deux." Rouen, 2000. http://www.theses.fr/2000ROUES033.
Full textRoussin-Pascaud, Anne. "Mise en évidence et régulation du couplage entre le récepteur des opioides de type "Op" du cerveau de grenouille (Rana ridibunda) et une protéine G de transduction." Toulouse 3, 1989. http://www.theses.fr/1989TOU30172.
Full textLihrmann, Isabelle. "Rôle du calcium dans les processus de couplage stimulus-sécrétion dans la cellule corticosurrénalienne chez les amphibiens." Rouen, 1986. http://www.theses.fr/1986ROUES040.
Full textKROUFKOVÁ, Michaela. "Reakce pulců skokana skřehotavého (Pelophylax ridibundus) na přítomnost nepůvodních predátorů." Master's thesis, 2018. http://www.nusl.cz/ntk/nusl-376068.
Full textPIÁLKOVÁ, Radka. "Selected aspects of reproductive behavior of the black-headed gull \kur{(Larus ridibundus)}." Doctoral thesis, 2010. http://www.nusl.cz/ntk/nusl-53070.
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