Dissertations / Theses on the topic 'Semiochemicals'
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Otienoburu, Philip E. "Plant Semiochemicals as Mosquito Attractants." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1313605670.
Full textZabaras, Regina, University of Western Sydney, of Science Technology and Environment College, and of Science Food and Horticulture School. "The evolution of semiochemicals in Australian marsupials." THESIS_CSTE_SFH_Zabaras_R.xml, 2003. http://handle.uws.edu.au:8081/1959.7/759.
Full textMaster of Science (Hons)
Zabaras, Regina. "The evolution of semiochemicals in Australian marsupials." Thesis, View thesis View thesis, 2003. http://handle.uws.edu.au:8081/1959.7/759.
Full textZabaras, Regina. "The evolution of semiochemicals in Australian marsupials." View thesis View thesis, 2003. http://library.uws.edu.au/adt-NUWS/public/adt-NUWS20030402.151527/index.html.
Full text"A thesis presented in partial fulfilment of the requirements for the degree of Master of Science (Honours), College of Science, Technology and the Environment, University of Western Sydney ... January, 2003" Bibliography : leaves 142-150.
Nordin, Ove. "Stereoselective synthesis of semiochemicals related to pine sawflies." Doctoral thesis, KTH, Chemistry, 1999. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-2852.
Full textThis thesis describes the stereochemistry and charactericsof ()-1,6-germacradien-5-ol, isolated from the larvaldefence substance of the pine sawflyNeodiprion sertiferand from the needles of Scots pine,Pinus sylvestris. The conformational behaviour of thissesquiterpene alcohol was investigated by molecular mechanicsstudies (MM2) and NMR. The absolute configuration at the twostereogenic centres was established as (5S,8S), after NOE measurements and chemical transformationinto ()-α-cadinol and 1-endo-bourbonanol. Our studies towards a stereoselectivetotal synthesis of ()-1,6-germacradien-5-ol using ringclosing metathesis (RCM) is also reported. However, allattempts to prepare this germacrene alcohol and other1,6-cyclodecadien systems using RCM failed.
Pseudomonas cepacialipase (PCL) catalysed acylation ofprimary 2-methylalcohols with vinyl acetate is anenantioselective reaction. The enantioselectivity of PCLtowards a series of primary 2-methylalcohols were studied. Highenantiomeric ratios,E>100, were observed for2-methyl-3-aryl-1-propanols, where aryl is 2-thiophene,3-thiophene, 2-furan and phenyl. In contrast the selectivitywas rather low for other 3-substituted primary2-methylpropanols such as 3-alkyl and 3-cycloalkyl, E ≈10 - 20. When moving the thiophene ring closer or further awayfrom the stereogenic centre a dramatic decrease in E wasobserved. 2-Isopropyl-5-methyl-5-hexen-1-ol, a possiblebuilding block for the total synthesis of1,6-germacradien-5-ol, was also successfully resolved with PCL,E= 14.
Keywords:defence substance, 1,6-germacradien-5-ol,Neodiprion sertifer,Pinus sylvestris, molecular mechanics, configuration,metathesis, RCM, stereoselective, kinetic resolution,transesterification, lipase,Pseudomonas, PCL, 2-methylalcohol, 2-isopropylalcoholenantioselective.
Santangelo, Ellen M. "Stereoselective syntheses of semiochemicals : applications in ecological chemistry /." Stockholm : Organic Chemistry, Department of Chemistry, Royal Institute of Technology, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-74.
Full textMeade, Brian J., and mikewood@deakin edu au. "Semiochemicals in merino ewes: Field effects and chemical identification." Deakin University. School of Sciences, 1986. http://tux.lib.deakin.edu.au./adt-VDU/public/adt-VDU20050815.112723.
Full textGurney, Joanne Elizabeth. "The use of semiochemicals for vertebrate pest population control." Thesis, University of York, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.273829.
Full textHenry, Elizabeth Judith. "The synthesis of insect sex pheromones." Thesis, Bangor University, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.481279.
Full textNilsson, Anna. "Identification and Syntheses of Semiochemicals Affecting Mnesampela privata and Trioza apicalis." Licentiate thesis, Mid Sweden University, Department of Natural Sciences, Engineering and Mathematics, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-10596.
Full textThe Autumn gum moth, Mnesampela privata (Lepidoptera: Geometridae) is an endemic Australian moth whose larvae feed upon species of Eucalyptus. The moths favorite host plants are E. globulus and E. nitens which are the most important species used in commercial plantations of the Australian pulpwood industry. The autumn gum moth has become one of the most significant outbreak insects of eucalyptus plantations throughout Australia. As a consequence great financial losses to the forest industry occur. Today insecticides such as pyrethroids are used for control of eucalyptus defoliators as M. privata.
The carrot psyllid, Trioza apicalis (Homoptera: Psylloidea), is one of the major pests of carrot (Daucus carota) in northern Europe. The psyllid causes curling of the carrot leafs and reduction of plant growth. Today the carrot crops are protected with the pyrethroid insecticide cypermethrin, which is toxic to aquatic organisms and is, from 2010, prohibited for use in Sweden by the Swedish Chemicals Inspectorate.
An alternative to insecticides is to protect the seedlings with semiochemicals, a chemical substance or mixture of them that carries a message. This thesis describes the identification and the syntheses of semiochemicals from the above mentioned insect species.
From analysis of abdominal tip extracts of M. privata females from Tasmania a blend of (3Z,6Z,9Z)-3,6,9-nonadecatriene and (3Z,6Z,9Z)-3,6,9-heneicosatriene was identified as the sex pheromone of this species. The identification of the C19- and C21-trienes was confirmed by synthesis.
In the analysis of carrot leaf extracts we found a compound, α-cis-bergamotene, that induces antennal response in the carrot psyllid. This is just the beginning of the studies of trying to manipulate this psyllid with semiochemicals instead of insecticides.
Hayes, Richard Andrew, of Western Sydney Hawkesbury University, Faculty of Science and Technology, and School of Science. "Semiochemicals and social signalling in the wild European rabbit (Oryctolagus cuniculus(L.)." THESIS_FST_SS_Hayes_R.xml, 2000. http://handle.uws.edu.au:8081/1959.7/371.
Full textDoctor of Philosophy (PhD)
Hayes, Richard Andrew. "Semiochemicals and social signalling in the wild European rabbit (Oryctolagus cuniculus (L.)) /." View thesis View thesis, 2000. http://library.uws.edu.au/adt-NUWS/public/adt-NUWS20030424.112701/index.html.
Full textA thesis presented to the University of Western Sydney, Hawkesbury, in partial fulfilment of the requirements for the degree of Doctor of Philosophy, December, 2000. Includes bibliographical references.
Curtiss, Robert T. "Attractiveness of semiochemicals to green lacewings for biological control in pome fruit." Online access for everyone, 2008. http://www.dissertations.wsu.edu/Thesis/Spring2008/R_Curtiss_050808.pdf.
Full textButeler, Micaela. "Integrated management of the Wheat Stem Sawfly by exploiting semiochemicals to enhance trap crops." Thesis, Montana State University, 2008. http://etd.lib.montana.edu/etd/2008/buteler/ButelerM0508.pdf.
Full textARIF, Mokhtar. "Chemical ecology of Bagrada hilaris (Burmeister) (Heteroptera: Pentatomidae): intraspecific and interspecific chemical cues." Doctoral thesis, Università degli Studi di Palermo, 2020. http://hdl.handle.net/10447/395181.
Full textChinta, Satya Prabhakar [Verfasser], and Stefan [Akademischer Betreuer] Schulz. "Identification and synthesis of semiochemicals from arthropods / Satya Prabhakar Chinta ; Betreuer: Stefan Schulz." Braunschweig : Technische Universität Braunschweig, 2010. http://d-nb.info/1175828076/34.
Full textBurhani, Joseph. "Role of semiochemicals in oviposition and mating behaviour of Aedes aegypti (Diptera: Culicidae)." Thesis, Keele University, 2013. http://eprints.keele.ac.uk/194/.
Full textGrosman, Donald Michael. "Southern pine beetle, Dendroctonus frontalis Zimmermann (Coleoptera: Scolytidae) : quantitative analysis of chiral semiochemicals /." Diss., This resource online, 1996. http://scholar.lib.vt.edu/theses/available/etd-05042006-164540/.
Full textGarraway, Richard. "The action of semiochemicals on olfactory nerve activity and behaviour of Deroceras reticulatum (Mull)." Thesis, University of Portsmouth, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.303955.
Full textLosey, Stephen M. "Orientation and dispersal of Cryptolestes ferrugineus (Stephens) (Coleoptera: Laemophloeidae) in response to various semiochemicals." Thesis, Kansas State University, 2015. http://hdl.handle.net/2097/20566.
Full textDepartment of Entomology
Thomas W. Phillips
The rusty grain beetle, Cryptolestes ferrugineus (Stephens) (Coleoptera: Laemophloeidae), is a very common worldwide pest of stored grains. The orientation of C. ferrugineus beetles to various semiochemicals was studied in both the laboratory and field. In laboratory experiments glass two-choice pitfall bioassay dishes were used. Mixed-sex populations of beetles responded positively and significantly to cucujolide I and II separately and in combination compared to controls. Bioassays using the two aggregation pheromones of the lesser grain borer, Rhyzopertha dominica (F.) (Coleoptera: Bostrichidae). Dominicalure 1 and 2 together elicited unexpected significant attractive responses by C. ferrugineus as did assays with the synthetic pheromones from other species. Bioassays showed that C. ferrugineus were not attracted to either corn meal or rolled oats, but they were attracted to commercial grain-based lures and also to ethanol, a natural fermentation product from grains. Several bioassays were conducted to test the attractiveness of naturally produced beetle volatiles to C. ferrugineus, but these showed no orientation to volatiles from either the beetles or their food only. Field tests were conducted in Kansas to test attractiveness of the synthetic pheromones cucujolide I and II in lures together with wheat versus wheat only as a control using Lindgren funnel traps. Field tests in 2014 with cucujolide II pheromone lures showed a significant response by feral C. ferrugineus when tested against wheat. Other field tests to examine dispersal of C. ferrugineus relative to grain storages showed that more C. ferrugineus were caught on the western side of grain bins compared to other cardinal directions at two different locations. Results from field and laboratory studies suggest that semiochemical-based tools can be developed to study dispersal behavior in field populations of C. ferrugineus.
Tarver, Matthew Robert. "Influence of soldier derived semiochemicals on Reticulitermes flavipes worker caste differentiation and gene expression." [Gainesville, Fla.] : University of Florida, 2009. http://purl.fcla.edu/fcla/etd/UFE0025142.
Full textLiu, Youngbiao. "Biology of Gnathotrichus retusus and behavioural responses of G. retusus and G. sulcatus to semiochemicals." Thesis, University of British Columbia, 1986. http://hdl.handle.net/2429/26441.
Full textForestry, Faculty of
Graduate
Banks, Glyn Raymond. "Analysis and identification of potential semiochemicals in the scent-markings of the tiger, Panthera tigris." Thesis, Anglia Ruskin University, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.313206.
Full textBouwer, Marc Clement. "Identication of semiochemicals from four major insect pests of Eucalyptus and Pinus species in South Africa." Thesis, University of Pretoria, 2014. http://hdl.handle.net/2263/78160.
Full textThesis (PhD)--University of Pretoria, 2014.
Chemistry
PhD
Unrestricted
Kirkland, Dean Lee. "The use of semiochemicals to enhance the natural control of pests of arable crops by invertebrate predators." Thesis, University of Edinburgh, 1999. http://hdl.handle.net/1842/28368.
Full textHull, Mark Q. "The role of semiochemicals in the behaviour and biology of Lepeophtheirus salmonis (Kroyer, 1837) : potential for control?" Thesis, University of Aberdeen, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.310772.
Full textUkeh, Donald A. "The identification and use of semiochemicals for the control of the maize weevil, Sitophilus zeamais (Motschulsky) in Nigeria." Thesis, Available from the University of Aberdeen Library and Historic Collections Digital Resources, 2008. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?application=DIGITOOL-3&owner=resourcediscovery&custom_att_2=simple_viewer&pid=25167.
Full textDodds, Catherine Jane. "The action of naturally-occuring semiochemicals on feeding behaviour and neurophysiology of the field slug Deroceras reticulatum (Mueller)." Thesis, University of Portsmouth, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.310443.
Full textCosta, Arnaud. "Aggregation, dispersal and edge behavior of the bark beetle predator Thanasimus dubius (Coleoptera: Cleridae); potential use in biological control." OpenSIUC, 2010. https://opensiuc.lib.siu.edu/dissertations/129.
Full textJones, Perer R. H. "An investigation of the semiochemicals of the Mediterranean black scale Saissetia oleae and the olive bark beetle Phloeotribus scarabaeoides." Thesis, Cardiff University, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.491915.
Full textOkal, M. N. "Analysing the role of semiochemicals in the oviposition substrate choices of the malaria vector mosquito Anopheles gambiae sensu lato." Thesis, London School of Hygiene and Tropical Medicine (University of London), 2015. http://researchonline.lshtm.ac.uk/2528132/.
Full textFavaris, Arodí Prado. "Isolamento do cairomônio de Anagasta kuehniella Zeller (Lepidoptera: Pyralidae) responsável pela atração do parasitoide Habrobracon hebetor Say (Hymenoptera: Braconidae)." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/11/11146/tde-23012017-152532/.
Full textKairomones are semiochemicals involved in interspecific interactions of insects that benefit the receiver to the detriment of the emitter. One of these interactions is host searching by parasitoids which detect these compounds as a strategy to locate their hosts. In the case of the larval ectoparasitoid, Habrobracon hebetor Say (Hymenoptera: Braconidae), the \'frass\' of Anagasta kuehniella Zeller (Lepidoptera: Pyralidae) releases a kairomone that attracts females parasitoids. Considering that A. kuehniella has been used for egg production in order to keep natural enemy rearing, this kairomone is undesirable, because it may lead to high H. hebetor infestation and causes important losses during the rearing process. One of the attempts to control these infestations could be the use semiochemical-baited traps. However, as the kairomone is still unidentified, the aim of this work was to isolate it - the first step for its identification. The kairomone was extracted by solvent washing and aeration of A. kuehniella \'frass\'. Then the extracts were tested in a four-way olfactometer with female parasitoids, registering the time taken in each treatment. The active washing extract was fractionated in five fractions in a silica column, and its attractivity was evaluated to proceed to isolation. The extracts and fractions were then analysed by gas chromatography with flame ionization detector (GC-FID) and gas chromatography coupled with mass spectrometry (GC-MS), in order to locate exclusive compounds in active samples. Furthermore, the fractions from the washed extract were aerated to extract their volatile compounds that were also analysed by GC-MS. The kairomone was isolated in the 75% ether fraction, indicating that it is a polar compound. Comparing the chromatograms, only one peak on the HP-5ms column was selected as belonging to the kairomone. On the Rtx-1ms column, the peak bifurcated, indicating that at least one of the compounds is part of the kairomone. The methodological combinations of this work provided the isolation of the kairomone present in A. kuehniella \'frass\' and the selection of at least one compound that comprises the semiochemical that attracts H. hebetor parasitoid, resulting in the first source of information about its chemical structure for its future identification.
Viviers, Marlize Zaretha. "Investigation into the semiochemical communication involved in neonatal offspring recognition in sheep." Thesis, Stellenbosch : University of Stellenbosch, 2010. http://hdl.handle.net/10019.1/3980.
Full textVideo 1: Twin-bearing Döhne Merino ewe butting only one of her lambs in typical rejection behavior. Rejection of one twin is not a common phenomenon. (Video by Dr Marlize Viviers)
Video 2: Twin-bearing ewe # 22 accepting alien lamb # 179. The alien lamb wears a jacket her other lamb has been wearing for the preceding 24 hours. The excessive sniffing at the jacket, bleating and looking around show that the ewe is not totally satisfied with the situation. (Video by Dr Marlize Viviers)
Video 3: Ewe # 22 rejecting alien lamb # 179 after removal of the jacket it has worn in the previous video. (Video by Dr Marlize Viviers)
ENGLISH ABSTRACT: Sheep husbandry substantially contributes to South Africa’s economy. Lamb mortality is regarded as a major constraint to sustainable sheep production, and an important factor in lamb survival is the strong ewe–lamb bonding. This is a well-known phenomenon in all sheep races and strong evidence exists that the selective ewe–lamb bond formation has a pheromonal basis, in that the ewe can distinguish her lamb by its unique, familiar smell. Sheep farmers and scientists have examined various methods of making alien lambs acceptable to foster ewes. The survival rate of offspring could be substantially increased if a reliable method could be devised to prevent ewes from rejecting their own lambs or if ewes could be induced to accept alien lambs. A better understanding of the semiochemicals involved in this communication between ewe and offspring could facilitate the development of a method by which ewes can be coaxed into adopting foster lambs. This would positively contribute to efficient sheep production in South Africa. The objective of this study was to characterise the volatile constituents present in the wool and the amniotic fluid collected from the Döhne Merino lambs to achieve a better understanding of the ewe–lamb semiochemical communication. The volatile organic constituents associated with the wool and amniotic fluid were characterised and a total of 133 volatile organic compounds were identified. Several compound classes are represented in these samples and the majority of these compounds have previously been identified in the excretions and secretions of numerous mammalian species. A number of different aspects of ewe–lamb kin recognition were investigated. First, the odour profiles of twin lambs were compared to those of other twins. The results of these analyses revealed that the wool volatiles of twin lambs are qualitatively as well as quantitatively practically identical, but different from those of other lambs in the flock. Second, the change in the odour profiles of lambs was studied over a seven-day period. It was found that the odour profiles of lambs are not fixed, and for as long as a ewe makes use of olfactory recognition as the main mode of identification of her lamb she has to continue learning the odour of her lamb. Third, the amniotic fluid was investigated as a possible source of maternal labels, i.e. as chemical codes consisting of mixtures of compounds in specific quantitative ratios that are imprinted on lambs by their mothers at birth. It was found that the amniotic fluids of first- and second-born lambs are qualitatively and quantitatively different. It is possible that the duration of the lambing birth process could contribute to this change in amniotic fluid composition. Fourth, the role of residual proteins in the dissemination of the semiochemicals involved in ewe– lamb communication was investigated and six proteins were identified as amniotic fluid and wool-associated proteins. Bioassays carried out during the lambing season of 2009 confirmed the role of the odour of the lamb in ewe-lamb recognition, but bioassays carried out with synthetic pheromone formulations gave inconclusive results.
AFRIKAANSE OPSOMMING: Skaapboerdery lewer aansienlike bydrae tot die ekonomie van Suid Afrika, maar lamsterftes is een van die kwellende probleme waarmee kleinveeboere te kampe het. Die eksklusiewe band wat binne die eerste paar uur na 'n lam se geboorte tussen die ooi en haar lam ontwikkel, is die hooffaktor waarvan lammers se oorlewing afhang. Hierdie sterk binding tussen lam en ooi is 'n bekende verskynsel in alle skaap-rasse en dit is bekend dat 'n feromoon wat deur die lam vrygestel word, dit vir die ooi moontlik maak om haar lam aan sy unieke reuk uit te ken. Lamsterftes sou aansienlik verminder kon word as hierdie feromoon geïdentifiseer en gebruik kan word om ooie te verhoed om hulle eie lammers te verwerp en om die aanvaarding van vreemde lammers deur ooie moontlik te maak. Die doel van hierdie studie was die chemiese karakterisering van die vlugtige organiese verbindings aanwesig in die amniotiese vloeistof en wol van Döhne Merino lammers ten einde 'n beter begrip van die semiochemiese kommunikasie tussen ooie en lammers te verkry. In die amniotiese vloeistof is 70 vlugtige organiese verbindings geïdentifiseer. Dieselfde verbindings asook 'n verdere 63 verbindings is in lammerwol geïdentifiseer. Die meerderheid van hierdie verbindings is reeds voorheen in verskeie soogdierafskeidings gevind. Die studie het verskeie interessante aspekte van hierdie semiochemiese kommunikasie aan die lig gebring. Eerstens is daar gevind dat die samestelling van die vlugtige organiese materiaal in die wol van tweelinglammers, oftewel hul reukprofiele, feitlik identies is. Verder verskil die reukprofiele van 'n tweeling van dié van ander tweelinge en enkelinge in die trop. Tweedens is gevind dat die reukprofiel van 'n lam nie by geboorte vasgelê word en so behoue bly nie, maar dat dit geleidelik verander oor ten minste die periode van sewe dae waaroor hierdie verskynsel bestudeer is. Dit noodsaak die ooi om haar geheue met betrekking tot die lam se reuk voortdurend te verfris gedurende die tydperk wat sy hoofsaaklik van haar reuksin gebruik maak om haar lam te herken. Derdens is die amniotiese vloeistof ondersoek as moontlike bron van ‘n sogenaamde moedermerk, waardeur chemiese mengsel van verbindings wat in ‘n spesifieke kwantitatiewe samestelling by geboorte deur die ooi op haar lam agter gelaat word. Ten opsigte van kwalitatiewe en kwantitatiewe samestelling, verskil die vlugtige organiese fraksie van die amniotiese vloeistof van die tweelinglam wat eerste gebore word van die amniotiese vloeistof van die lam wat tweede gebore word. Dit is onwaarskynlik dat amniotiese vloeistowwe wat ten opsigte van hul vlugtige organiese fraksies van mekaar verskil, nagenoeg identiese moedermerke op tweeling lammers sou kon laat. Vierdens is vasgestel dat spore van ses proteïene uit die amniotiese vloeistof op die wol van lammers agtergelaat word. Daar kon ongelukkig nie vasgestel word of hierdie proteïene 'n rol in die vrystelling van semiochemiese inligting speel nie. Gedragstoetse wat tydens die lamseisoen van 2009 uitgevoer is, het bevestig dat die lam se reukprofiel deurslaggewende rol in ooi-lam herkenning speel, maar gedragstoetse wat met sintetiese feromoonmengsels uitgevoer is, het onbesliste resultate opgelewer.
Scott, Gary Terri. "The role of micro-organisms in the production of semiochemicals in the interdigital secretion of the bontebok, Damaliscus pygargus pygargus." Thesis, Stellenbosch : Stellenbosch University, 2004. http://hdl.handle.net/10019.1/53774.
Full textENGLISH ABSTRACT: Bontebok, Damaliscus pygargus pygargus, formerly classified as D. dorcas dorcas, are territorial animals with interdigital glands between the toes of the forelegs. Males regularly defecate on dung heaps, on which they often lie, to communicate with other members of their species. They also communicate by means of visual displays, scent marking and occasionally with scraping or pawing of dung heaps. It is assumed that scent marking with the interdigital secretion serves to define territories frequented by these antelope. These glands secrete a complex mixture of volatile and non-volatile compounds and the volatile compounds in the secretion serve as a chemical signal for other bontebok. It has been suggested that the interdigital secretion is not produced in its final composition by the interdigital gland alone, but that microbial activity is responsible for many of the compounds present in the secretion. In general, many compounds can be attributed to the by-products of microbial hydrolysis of triglycerides, a common characteristic of sebum. It is well documented that micro-organisms inhabit the deep recesses of sebaceous glands and the presence of micro-organisms has been found to be consistent in all antelope exocrine glandular areas. This study involved the chemical characterisation of the volatile metabolites produced in vitro by micro-organisms from the interdigital cavity of the bontebok. Various comparative studies were made, one of which was comparison of the metabolites produced by the individual microbial species as well as the total community of bacteria incubated in different media. A comparison of the compounds identified in the interdigital secretion and the metabolites produced by the micro-organisms in the different media was also made. The volatile metabolite extracts of the individual bacterial species and of the total community were chemically characterised by low-resolution gas chromatography-mass spectroscopy. Classes of compounds identified from the volatile metabolite extracts include: • Acids - Aliphatic (saturated and unsaturated) • Alcohols - Aliphatic (saturated and unsaturated) • Aldehydes - Aliphatic (saturated and unsaturated) • Aromatic compounds • Ketones - Aliphatic (saturated and unsaturated) • Pyrazines • Dimethyldisulphide • Squalene and cholesterol Several qualitative differences were found between the compounds identified in the volatile metabolite extracts of the micro-organisms when incubated in tryptic soy broth (TSB) and minimal salt medium (MSM). In particular, when the microbes were incubated in TSB medium a number of pyrazines were found that were not present when utilising MSM as a medium. Additional qualitative differences were found between the compounds identified in the metabolite extracts of the individual bacterial species and the total community of bacteria, when incubated in both TSB and MSM media. A comparison of the interdigital secretion and the metabolite extracts of the microbial communities incubated in TSB and MSM revealed that many compounds produced in MSM corresponded to the compounds identified in the interdigital secretion. These corresponding compounds were found to be saturated and unsaturated acids, aldehydes and squalene. Furthermore, there was only one corresponding compound in the case of TSB as medium.
AFRIKAANSE OPSOMMING: Die bontebok, Damaliscus pygargus pygargus, voorheen geklassifiseer as D. dorcas dorcas, is 'n territoriale dier met interdigitale kliere tussen die kloutjies van die voorpote. Ramme ontlas gereeld op mishope, waarop hulle dikwels lê, om met ander lede van die spesie te kommunikeer. Hulle kommunikeer ook deur middel van visuele seine, reukmerking en soms deur mishope met die voorpote te kap of te skraap. Reukmerking met die interdigitale afskeiding dien klaarblyklik om gebiede wat deur hierdie diere bewoon word, af te baken. Die interdigitale kliere skei 'n komplekse mengsel van vlugtige en nie-vlugtige verbindings af en die vlugtige verbindings dien as chemiese sein vir ander bontebokke. Die vermoede bestaan dat die interdigitale klier nie alleen verantwoordelik is vir die finale samestelling van die interdigitale afskeiding nie, maar dat mikrobiese aktiwiteit bydra tot die produksie van baie van die verbindings wat in die afskeiding aanwesig is. Sekere verbindings kan in die algemeen toegeskryf word aan die vorming van die neweprodukte van mikrobiese hidrolise van trigliseriede, 'n algemene eienskap van sebum. Dit is bekend dat die diep holtes van vetkliere 'n goeie teelaarde is vir mikroorganismes en daar is gevind dat mikroorganismes feitlik deurgaans voorkom in alle anteloop eksokriene klierareas. Hierdie studie behels die chemiese karakterisering van die vlugtige metaboliete wat in vitro deur mikroorganismes van die interdigitale klierholte van die bontebok geproduseer word. Verskeie vergelykende studies is uitgevoer waarvan een die vergelyking was van die metaboliete wat deur die individuele mikrobiese spesies sowel as die totale gemeenskap van bakterieë geproduseer word tydens inkubasie in verskillende media. Vergelyking van die verbindings wat in die interdigitale afskeiding geïdentifiseer is met die metaboliete wat in verskillende media geproduseer is, het ook deel van die studie uitgemaak. Die vlugtige metaboliet ekstrakte van die individuele bakteriese spesies en van die totale gemeenskap is chemies gekarakteriseer deur middel van laeresolusie gaschromatografie-massaspektrometrie. Die volgende groepe verbindings is onder andere in die vlugtige metaboliet ekstrakte geïdentifiseer: • Sure - Alifaties (versadig en onversadig) • Alkohole - Alifaties (versadig en onversadig) • Aldehiede - Alifaties (versadig en onversadig) • Aromatiese verbindings • Ketone - Alifaties (versadig en onversadig) • Pirasiene • Dimetieldisulfied • Skwaleen en cholesterol Verskeie kwalitatiewe verskille is gevind tussen die verbindings wat geïdentifiseer is in die vlugtige metaboliet ekstrakte van die mikroorganismes onderskeidelik in TSB medium en MSM geïnkubeer. Opvallend was byvoorbeeld die voorkoms van pirasiene in gevalle waar mikroorganismes in TSB medium geïnkubeer is, terwyl hierdie groep verbindings afwesig was wanneer MSM gebruik is. Onderlinge kwalitatiewe verskille is ook gevind tussen die verbindings wat geïdentifiseer is in die metaboliet ekstrakte van die individuele bakteriese spesies en die totale gemeenskap van bakterieë, wanneer in TSB medium sowel as in MSM geïnkubeer is. Vergelyking van die verbindings in die interdigitale afskeiding en in die metaboliet ekstrakte van die mikrobiese gemeenskappe, het getoon dat 'n aantal verbindings wat in MSM geproduseer is, ooreenstem met verbindings wat in die interdigitale afskeiding geïdentifiseer is. Daar is gevind dat hierdie verbindings versadigde en onversadigde sure en aldehiede en skwaleen is. Met TSB as medium was daar slegs een ooreenstemmende verbinding.
Silva, Weliton Dias da. "Comportamento sexual da broca-do-café, Hypothenemus hampei (Ferrari, 1867) (Coleoptera: Curculionidae: Scolytinae)." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/11/11146/tde-17032010-141611/.
Full textThe sexual behavior study in insects includes all the events occurred since of pair encounter by means of courtship until their separation after mating. These studies are important and represent the first step of researches that aim to elucidate pheromones of target species. Regarding the coffee berry borer, Hypothenemus hampei (Ferrari), which is the most important coffee pest around the world, little is known about its sexual behavior. Furthermore, the researchers have been focused on the use of traps based on alcohols (e.g. ethanol and methanol) with aims of managing this pest, but its results are conflicting. For that reason, the aim of the present work was to study the sexual behavior of H. hampei, whose it will give support to subsequent studies about evaluation of pheromone this species. Daily mating rhythm of H. hampei occurred on any time of 24- hour cycle. Although at low rates, 60% of paired adults mated at least once when they were 0-24 hours, reaching 100% in older pairs. The highest sexual activity was observed in the ages of 48-72 and 72-96 hours, being in this last one the occurrence of 6,9 ± 0,47 matings/pair with a mean duration of 2,04 ± 0,13 minutes each. The pattern behavior displayed was similar to other groups of Curculionidae, with premating, mating and postmating. The results also indicated the presence of a pheromone produced by the males that mediates mating. The possibility of the H. hampei females recopulates after they leave the fruits opens new perspectives to investigate the viability of using this pheromone in management of this pest.
Page, Jennifer Lynn. "The effects of plume property variation on odor plume navigation in turbulent boundary layer flows." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/29752.
Full textCommittee Chair: Weissburg, Marc; Committee Member: Hay, Mark; Committee Member: Kubanek, Julia; Committee Member: Webster, Donald; Committee Member: Yen, Jeannette. Part of the SMARTech Electronic Thesis and Dissertation Collection.
Peck, Gavin Earl. "Potential Semiochemicals of Wheat (Triticum aestivum L.) Induced by Oviposition and Feeding of the Wheat Stem Sawfly, Cephus cinctus Norton (Hymenoptera: Cephidae)." Thesis, Montana State University, 2004. http://etd.lib.montana.edu/etd/2004/peck/PeckG1204.pdf.
Full textZhang, Qing-He. "Olfactory recognition and behavioural avoidance of angiosperm non-host volatiles by conifer bark beetles /." Alnarp : Swedish Univ. of Agricultural Sciences (Sveriges lntbruksuniv.), 2001. http://epsilon.slu.se/avh/2001/91-576-5789-0.pdf.
Full textMoura, Jose Inacio Lacerda. "Polinização de dendezeiro por Elaeidobius subvittatus Faust e Elaeidobius kamerunicus Faust (Coleoptera, Curculionidae) no sul do Estado da Bahia /." Jaboticabal : [s.n.], 2008. http://hdl.handle.net/11449/102289.
Full textBanca: Antonio Carlos Busoli
Banca: José Maurício Simões Bento
Banca: Júlio César Galli
Banca: César Freire Carvalho
Resumo: Este foi conduzido no sul do estado da Bahia entre os anos de 2004 e 2007. Teve como objetivo determinar a taxa de fecundação de dendezeiros após a introdução de Elaeidobius kamerunicus Faust . Avaliaram-se as relações das espécies E. kamerunicus e Elaeidobius subvittatus Faust através da: flutuação populacional, distribuição espacial, influência de fatores meteorológicos, comportamento com relação às inflorescências das plantas e capacidade de transportar grãos de pólen. A taxa de fecundação nos dendezeiros atingiu 79,4%, representando incremento de 19% quando comparado aos dendezeiros polinizados apenas por E. subvittatus. Plantios comerciais de dendezeiros nos municípios de Taperoá e Nazaré, mostraram taxas de fecundação de 76,8% e 78,0%, respectivamente. E. kamerunicus foi a espécie dominante nos plantios de dendezeiro de Una, BA. Com exceção do município de Itapebi, as populações de E. kamerunicus sobrepujaram as de E. subvittatus em todos os municípios com grandes maciços de dendezeiros subespontâneos. A distribuição das chuvas no sul da Bahia não alterou a atividade polinizadora de E. kamerunicus, permitindo ocorrer taxa constante de fecundação dos frutos. Houve aumento da densidade populacional de E. subvittatus com o incremento térmico no ambiente ocorrendo o oposto com E. kamerunicus. O número de espécimes de E. subvittatus visitando inflorescências femininas de dendezeiros e híbridos interespecíficos foi superior ao de E. kamerunicus entre 6:00 e 8:00 horas, porém E. kamerunicus foi mais numeroso que E. subvittatus entre 9:00 e 12:00 horas. Essas espécies apresentaram pouca atividade polinizadora nas inflorescências femininas entre 14:00 e 16:00 horas, mas E. subvittatus congregou-se nas inflorescências femininas de ambas variedades de plantas a partir de 16:00 horas. Ao anoitecer foi constatada a presença... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: The study was conducted in south Bahia between 2004 and 2007 to determine the rate of fertilization of oil palm after the introduction of Elaeidobius kamerunicus Faust in Southern Bahia. Relationships of the species E. kamerunicus and Elaeidobius subvittatus Faust were evaluated through population fluctuation, spatial distribution, influence of meteorological factors, behavior regarding the plant inflorescences and capability to collect and transport pollen grains. The data were analyzed utilizing correlation and variance analysis and test of means. The rate of fertilization in the oil palm trees reached 79.4%, representing an increase of 19% when compared to oil palm trees pollinated only by E. subvittatus. Commercial plantations of oil palm trees in Taperoá and Nazareth municipalities showed rates of fertilization of 76.8% and 78.0%, respectively. E. kamerunicus was the dominant species in the plantations of oil palm trees of Una, BA. With the exception of Itapebi municipality, the populations of E. kamerunicus overwhelmed the E. subvittatus in all municipalities with large plantations of sub-spontaneous oil palm trees. The rainfall distribution in south Bahia did not alter the pollination activity of E. kamerunicus, which permitted a constant rate of fruit fertilization. There was an increase in population density of E. subvittatus with environmental thermal increase, the opposite occurred with E. kamerunicus. The number of specimens of E. subvittatus visiting female inflorescences of oil palm trees and interspecific hybrids was higher than that of E. kamerunicus between 6:00 and 8:00 hours, however E. kamerunicus was more numerous than E. subvittatus between 9:00 and 12:00 hours. These species presented little pollination activity in female inflorescences between 14:00 and 16:00 hours, but E. subvittatus congregated in the female inflorescences of both oil palm varieties starting ...(Complete abstract click electronic access below)
Doutor
Brandl, Michael Albert [Verfasser], Stefan [Akademischer Betreuer] [Gutachter] Vidal, Anant [Gutachter] Patel, and Stefan [Gutachter] Schütz. "Exploitation of synergistic effects between semiochemicals and Metarhizium brunneum against soil pests / Michael Albert Brandl. Betreuer: Stefan Vidal. Gutachter: Stefan Vidal ; Anant Patel ; Stefan Schütz." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2016. http://d-nb.info/1112325344/34.
Full textSpäthe, Anna Maria [Verfasser], Bill S. [Akademischer Betreuer] Hansson, Peter [Akademischer Betreuer] Anderson, and Sylvia [Akademischer Betreuer] Anton. "The function of volatile semiochemicals in host plant choice of ovipositing manduca moths (sphingidae) / Anna Maria Späthe. Gutachter: Bill S. Hansson ; Peter Anderson ; Sylvia Anton." Jena : Thüringer Universitäts- und Landesbibliothek Jena, 2014. http://d-nb.info/1047097079/34.
Full textZazycki, Luiza Cristiane Fialho. "Variabilidade do feromônio sexual de diferentes populações brasileiras de Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae)." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/11/11146/tde-25062014-100343/.
Full textS. frugiperda is a key pest in corn cultivation. This species is polyphagous and has intraspecific variation, which can be distinguished into two groups according to their host - races \'Corn\' and \'Rice\'. Individuals of both races are morphologically identical, but have distinct genetic loads. These variations can be observed in subgroups formation, which may consist of geographically distinct individuals or by the way they are distributed within populations reflecting directly on mating patterns of the species. For this reason, this work aims at understanding the genetic variability of Brazilian populations of S. frugiperda and how it is associated with the production of different pheromonal compounds or the variation in the rate of these compounds. For this, fall armyworms were collected at 6 locations in Brazil (Santo Augusto-RS, São Raimundo das Mangabeiras-MA, Dourados-MS, Sinop-MT, Assis-SP, and Santa Helena de Goiás-GO). The populations were evaluated for genetic diversity, chromatographic profile of the responses in electroantennography (GC-EAD), pheromone production and behavioral responses in a wind tunnel. Results showed a variable frequency between races \'Corn\' and \'Rice\' in Brazilian populations of S. frugiperda according to the locality and period of sampling. A large number of haplotypes in Brazilian populations were identified, and apparently, this is caused by the presence of a haplotype diversity and environmental selection pressure. Males of S. frugiperda responded to up to 4 chemical compounds from samples of sex pheromone and there was a difference in the abundance of the major compound, the acetate (Z)-9 Tetradecenila between populations of different localities evaluated. In the wind tunnel, males showed different levels of attraction to females of S. frugiperda to both the same site and for different site.
Tonelli, Mateus. "Resposta de nematoides entomopatogênicos aos voláteis radiculares de cana-de-açúcar (Saccharum officinarum L.) sob herbivoria de ninfas de Mahanarva fimbriolata (Stål) (Hemiptera: Cercopidae)." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/11/11146/tde-13032015-083636/.
Full textThe responses of entomopathogenic nematodes Steinernema carpocapsae (Weiser) and Heterorhabditis indica (Poinar, Jackson e Klein), to volatiles emitted by sugar cane roots damaged or undamaged by Mahanarva fimbriolata (Stål) nymphs, were investigated under laboratory conditions. Thus, sugarcane plants damaged or undamaged by M. fimbriolata were transplanted to lateral arms of six arm olfactometer. Approximately 10000 entomopathogenic nematodes were released in the central chamber of the olfactometer and after 24 hours, the nematodes were counted in each arm. Roots of previously damaged or undamaged plants were detached, frozen with liquid nitrogen and macerated. The material was then aerated for 8 hours to collect volatiles. The volatiles profile was analyzed by a gas chromatograph-mass spectrometer. Most nematodes of both species moved to plants that had been previously damaged over undamaged plants, and there was no significant difference in the choice of undamaged plant and only moisted sand. The GC-MS analyzes showed no qualitative difference between the root treatments volatiles profile. In both treatments, the same 11 compounds were found. Although, two compounds, dihydro myrcenol and Beta-iso-methionene, showed quantitative difference between treatments, observing greater production in undamaged plants, i.e. herbivory caused reduction in tested sugar cane roots volatiles releasing. These data provide new information about the tritrophic relationships occurring in the soil which, in the future, can be used in order to develop field management for M. fimbriolata.
Bång, Joakim. "Purification, Stereoisomeric Analysis and Quantification of Biologically Active Compounds in Extracts from Pine Sawflies, African Butterflies and Orchid Bees." Doctoral thesis, Mittuniversitetet, Institutionen för naturvetenskap, teknik och matematik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-14662.
Full textMånga naturligt förekommande kemiska ämnen finns som två spegelbilder av varandra, ungefär som höger och vänster hand. Dessa kan ha helt olika egenskaper och det är därför viktigt att kunna separera dem. Insekter och andra djur använder olika doftämnen för att kommunicera med varandra, om det är inom samma art kallas de för feromoner. De kan bestå av ett ämne eller en blandning av flera. Dessa doftämnen kan man även använda för att på ett miljövänligt sätt bekämpa skadeinsekter. En fälla med syntetiskt feromon för en viss insekt lockar endast till sig den arten, medan alla andra är opåverkade. Eftersom dessa ämnen ofta finns som spegelbilder där kanske bara den ena är aktiv och den andra rent av frånstötande, måste man kunna separera dem för att framställa ett syntetiskt feromon som är attraktivt. Målet med detta arbete har varit att bestämma feromonet hos olika arter av tallsteklar som kan vara svåra skadedjur på tallskog. De metoder som tagits fram har även tillämpats på några arter av afrikanska fjärilar samt orkidébin från Centralamerika eftersom de använder snarlika doftämnen. Att få fram feromonet från en insekt är lite som att leta efter in nål i en höstack eftersom de ofta bara innehåller några miljarddels gram per individ. Provet behöver först renas, och en del av arbetet i det här projektet har gått ut på att ta fram en lämplig reningsmetod. Huvudfokus har dock varit på att ta fram metoder som kan separera och identifiera det eller de ämnen, och spegelbilder av dessa, som doftämnena består av. När lämpliga metoder tagits fram har extrakt av olika insektsarter analyserats. I några fall är det första gången som deras feromon bestämts i detalj. Resultaten kan förhoppningsvis bidra till en ökad kunskap om insekters sätt att kommunicera, och i slutändan till miljövänligare bekämpning av skadeinsekter.
Silva, Weliton Dias da. "Idade de fêmeas colonizadoras de Hypothenemus hampei (Ferrari) e sua resposta aos voláteis de flores de café, Coffea arabica L." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/11/11146/tde-02062014-114207/.
Full textThe age of Hypothenemus hampei (Ferrari) females during the host abandonment, as well as their response to coffee flower volatiles were determinated under laboratory conditions. A experimental device that simulated the conditions inside a coffee berry, and that allowed the observation the insects coming out was used to determinate the age of colonizing females. On average, the beetles were 15 d-old at the moment they abandoned the experimental device. In this age, the females were mated, had a fully melanized tegument, were able to fly and to produce viable eggs. The volatiles of coffee, Coffea arabica L. var. Tupi, flowers were colected by aeration, analyzed in GC-EAD and GC-MS, and tested in olfactometer bioassays. The colonizing H. hampei females were attracted by the coffee flower volatiles. Of 50 compounds found in the natural extracts, seven were electrophysiologically actives to the insects. Of these seven, only methyl salicylate, neral and geranial could be identified, and the blend with their syntetic standards was the most atractive in the olfactometer bioassays. Taken together, these results bring new information on the bioecology and chemical ecology of the coffee berry borer, which may be used in the future by basic researchs or by those focused on the development of new strategies for the management of H. hampei in coffee farms.
Wallin, Erika. "The Scents of Nature : Identification and Synthesis of Bioactive Compounds Used in Insect Communication." Doctoral thesis, Mittuniversitetet, Avdelningen för kemiteknik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-22821.
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Bursztyka, Piotr. "Etude du rôle des sémiochimiques dans les stratégies d'évitement des prédateurs chez deux gastéropodes terrestres : Deroceras reticulatum (Muller, 1774) et xeropicta derbentina (Krynicki, 1836)." Thesis, Toulouse, INPT, 2015. http://www.theses.fr/2015INPT0139/document.
Full textDespite crippling drawbacks, molluscicides remain predominant in strategies employed against terrestrial gastropods pests, a situation that call for the development of alternatives. Although chemodetection drive many crucial interactions in terrestrial gastropods, their perception of predation remains largely unknown despite its ecological importance. We investigated the alteration of self-maintenance behaviours of two harmful land gastropods, the slug Derocers reticulatum and the snail Xeropicta derbentina, exposed to chemical compounds from different ground beetle species, an important category of gastropod predators. The results obtained indicate that the ecological features of the predators are crucial for the perception of the relevance of the predation threat by these gastropods
Lindh, Jenny. "Identification of bacteria associated with malaria mosquitoes - Their characterisation and potential use." Doctoral thesis, Stockholm : Department of Genetics, Microbiology and Toxicology, Stockholm University, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-6685.
Full textGalvão, André Luiz Beserra. "Avaliação da diversidade genética, prospecção de cairomônios e formulações de sordidina como alternativas ao controle do Cosmopolites sordidus (Germar, 1824) (Coleoptera: Curculionidae)." Universidade Federal de Alagoas, 2014. http://www.repositorio.ufal.br/handle/riufal/1922.
Full textA banana apresenta-se de grande importância no mundo, estando diretamente ligada a relevância social e econômica, geradora de renda tanto para a agricultura familiar quanto empresarial. O C. sordidus é praga chave da cultura da banana, reduzindo a produção em até 90%.Portanto, o objetivo deste trabalho foi avaliar a diversidade genética de C. sordidus, prospectar moléculas de cairomônios e testar local de instalação de armadilhas e formulações sintéticas com feromônio para o manejo integrado deste artrópode em campo.O presente trabalho foi realizado por meio de parceria institucional entre a Universidade Federal de Alagoas LPqRN, a Interacta Química LTDA e a Fazenda Bonsucesso-Cooperativa Pindorama. No primeiro estudo foi detectada variabilidade genética intra e inter-populacional para esse coleóptero entre as três populações estudadas oriundas de regiões produtores de banana no estado de Alagoas. Este resultado indica viabilidade de estudos para prospectar a possível variabilidade na diversidade proteômica e metabolômica nas populações, em especial a relacionada aos sistemas de comunicação química inseto/inseto e inseto/planta.No segundo estudo, detectou-se variação no perfil químico de voláteis da atmosfera, do rizoma e do pseudocaule. Foram observados metabolitos com funcionalidade na interação inseto/planta e potencial aplicação como cairomônios para manejo do C. sordidus.Dentre esses o α-pineno, β-pineno,α-copaeno, eucaliptol e limoneno.Na terceira etapa, ao avaliar o experimento entre locais de instalação das armadilhas em campo recomenda-se a instalação destas na borda do talhão além das armadilhas internas a fim de potencializar o controle e o monitoramento da população do artrópode. No estudo final, onde foi avaliada a formulação do feromônio observou-se maior eficiência em relação à quantidade de sordidina versus captura do C. sordidus com 78,06mg deste semioquímico. Porém, essa eficiência foi promovida quando associada aos adjuvantes óleo mineral na dose 100,8μL e cairomônio acetato de isoamila na quantidade de 700 μL por isca.
Grau, Paricio Carlos. "Influence of predator and food chemical cues in the behaviour of the house mouse (Mus musculus)." Thesis, Toulouse, INPT, 2019. http://www.theses.fr/2019INPT0068/document.
Full textRodent commensal species produce great damage in agriculture and urban areas. As invasive species they can endanger local species and are carriers and vectors of several important zoonoses. Control methods rely mainly on the use of warfarins, which can be inadvertently be taken up by untargeted species. Warfarins have also lost their efficacy in rodents due to the development of genetic resistance. In addition, these methods are considered inhumane as they cause a slow and painful death due to haemorrhages. Olfaction is a main source for environmental risk assessment by rodents, and it can be used to modify their use of space. My aim in this thesis was to identify behavioural reactions of the house mouse (Mus musculus), using laboratory strains as models of wild animals, to ecologically meaningful chemical messages, including predator and plant chemical olfactory cues. My results showed that mice avoided complex ferret olfactory cues and ethanol which is a ubiquitous chemical related to fruit rotting and ripening. The feline protein Fel d 1, which belongs to the secretoglobin family and is a major cat allergen in humans, did not elicit significant avoidance or alter foraging behaviour in mice. However, Trimethylthiazoline purified from fox faeces, elicited clear avoidance behaviour and stress responses. I carried out a bibliographic review to evaluate and discuss rodent pest control methods from an ethical standpoint. This literature showed that many of the current methods of pest control are considered inhumane, and do not tally with current society concerns and welfare standards in other domains such as farms or laboratory animals. These results raise new research questions to identify ferret and plant chemical compounds that can induce rodent avoidance, and to carry out next stage of research with wild animals both under laboratory and field conditions