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Dissertations / Theses on the topic 'Parasites sociaux'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

Hillegass, Melissa Ann. "SEX-BIASED PARASITISM AND THE REPRODUCTIVE COSTS OF PARASITES IN A SOCIAL AFRICAN GROUND SQUIRREL." Master's thesis, University of Central Florida, 2007. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2205.

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Vertebrate males frequently carry higher numbers of parasites than females. This bias in parasite loads could be a consequence of sexual selection. Grouping species are also assumed to be afflicted with larger numbers of parasites than solitary animals and associated costs of this parasitism could vary with group size or structure. I examined sex-biased parasitism and the influence of group size on parasite loads in Cape ground squirrels (Xerus inauris), a highly social species that occurs in the arid regions of southern Africa. Males carried three times as many ectoparasites as females, but f

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2

Brown, S. "Social evolution in parasites." Thesis, University of Cambridge, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.597008.

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The ability of parasites to manipulate their hosts is the major empirical theme of this thesis, in particular the problem of cooperation among parasites that host manipulation entails. Contributing to host manipulation is likely to bear a cost to the individual, while the benefits will be felt by every conspecific parasite (and others) within the host. I develop in Chapter Two a game-theoretical model of parasite-induced host manipulation, which focuses on co-operative interactions between individuals and a larger group. In Chapters Three and Four I consider two macroparasitic case-studies. Ch

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3

Quigley, Benjamin J. Z. "The social lives of hosts and parasites." Thesis, University of Oxford, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.639732.

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All organisms are to some degree parasitised and display some form of social behaviour. Host and parasite social interactions are incredibly diverse and occur in all natural populations, therefore understanding such fundamental interactions is of profound importance - particularly from a public health perspective. The work in this thesis is developed in the context of bacteria and virus interactions, using the bacterium Pseudomonas fiourescens and bacteriophage SBW2502 for experiments. Mathematical models are developed in close conjunction with empirical data, with the aim of maintaining a hig

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4

Raczkowski, Joseph Martin. "Phylogeny and founding stage of Lasius (Acanthomyops) (Hymenoptera: Formicidae)." Columbus, Ohio : Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1221749471.

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5

Leggett, Helen Catherine. "Developments in social evolution and virulence in parasites." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:e69b69ae-440a-4d32-8947-efb4a0c55930.

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The study of social evolution and virulence in parasites is concerned with fitness consequences of trade-offs between parasite life history traits and interactions between parasite species and/or genotypes with their hosts. I develop our understanding of social evolution and virulence in parasites in several ways. (1) I review empirical evidence for the fundamental predictions of virulence-transmission trade-off theory and demonstrate that the fit between theory and data is primarily qualitative rather than quantitative; that parasites differ in their degree of host generalism, and this is lik

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6

Delattre, Olivier. "Coévolution et reconnaissance sociale chez un parasite social et ses espèces hôtes : étude de la fourmi esclavagiste Myrmoxenus ravouxi et d'espèces sympatriques du genre Thermnothorax." Paris 13, 2012. http://www.theses.fr/2012PA132033.

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La réussite écologique des sociétés d’insectes, largement distribuées dans la biosphère et très populeuses, trouve en partie son explication dans l’organisation eusociale altruiste qu’elles ont adopté. Ainsi, elles collaborent dans l’élevage et les soins consacrés à leurs jeunes congénères et participent au succés global de la colonie. Si de nombreux prédateurs et parasites profitent de cette ressource trophique, certaines espèces ont développé la capacité originale d’exploiter la force de travail que constitue la colonie. Parmi ces parasites sociaux, les fourmis esclavagistes en particulier r

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7

Stephenson, Jessica. "Predators, parasites, and the social behaviour of the guppy Poecilia reticulata." Thesis, Cardiff University, 2015. http://orca.cf.ac.uk/73819/.

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Predators can have both direct and indirect effects on how their prey interact with parasites. This thesis explores these effects using observational and experimental approaches. A behavioural experiment suggested that the direct effects of predators are size- and sex-biased, with small and male guppies, Poecilia reticulata Peters 1859, more prone to Gyrodactylus turnbulli Harris 1986 parasite-induced vulnerability to predation (Chapter 2). Trait-mediated indirect effects of predators also appear important to this host-parasite interaction, as revealed by surveys of natural Trinidadian populat

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8

Owusu, Christian Kwasi. "Comparative analysis of endoparasitic helminths in Lake Tanganyikan cichlids: host body mass and social interaction as determinants of parasite load." Thesis, Uppsala universitet, Institutionen för biologisk grundutbildning, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-220107.

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Parasites are an important component of every ecosystem, and their interactions with hosts can directly impact the fitness of the host organisms. Despite their significance, it is still largely unknown which host traits predispose a species to increased risk of parasite attack. In the present study, I investigated host and ecological correlates of parasite load in Lake Tanganyikan cichlids using phylogenetic comparative analyses. Specifically, I tested the effect of body size, brain mass, gut length, depth, trophic level, habitat complexity and mating system on parasite prevalence and diversit

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9

Monello, Ryan Joseph Gompper Matthew Edzart. "Experimentally assessing the influence of resource availability and social aggregation on the parasites of raccoons." Diss., Columbia, Mo. : University of Missouri--Columbia, 2009. http://hdl.handle.net/10355/6152.

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Title from PDF of title page (University of Missouri--Columbia, viewed on Feb. 20, 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. Dissertation advisor: Dr. Matthew E. Gompper. Includes bibliographical references.

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10

Gloag, Rosalyn Suzanne. "Brood parasitism by shiny cowbirds." Thesis, University of Oxford, 2012. http://ora.ox.ac.uk/objects/uuid:b9a9d900-ed14-4bb0-8979-7fd782584f00.

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Brood parasitic birds lay eggs amongst the clutches of other species, which then assume all costs of parental care on their behalf. This thesis addresses several puzzles of avian brood parasitism, using field studies and theoretical modelling of the generalist parasite, the shiny cowbird (Molothrus bonariensis) and select hosts in Argentina. Key findings and conclusions were: • High parasitism intensity in a host population can result in a cost to hosts of removing parasite eggs from their clutches, and so help to maintain host’s acceptance of parasite eggs in evolutionary equilibrium. The cos

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11

Almond, E. J. "Interaction between the paper wasp Polistes dominulus and its social parasite, Polistes semenowi." Thesis, University College London (University of London), 2007. http://discovery.ucl.ac.uk/1445258/.

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Polistes dominulus is a social paper wasp found around the Mediterranean basin and in North America. Queens of the social parasite Polistes semenowi invade the nests of P. dominulus and raise parasite offspring by exploiting the foraging effort and nest defence provided by host wasps. Recent studies have suggested that nest infiltration by the parasite involves "hacking" into the host's nestmate recognition system, so that hosts accept the parasite as one of their own. However, this mechanism is employed only after an initial violent attack upon the nest, which appears to be resisted by hosts.

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12

Poirotte, Clémence. "Stratégies d’évitement parasitaire chez une population de primates sociaux en milieu naturel." Thesis, Montpellier, 2016. http://www.theses.fr/2016MONTT166.

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Les pressions de sélection exercées par les parasites ont permis l’évolution de mécanismes complexes de défense chez les espèces hôtes qui limitent la transmission parasitaire. En complément de leur système immunitaire physiologique, les animaux ont développé un « système immunitaire comportemental » comprenant un ensemble sophistiqué de stratégies d’évitement parasitaire représentant une première ligne de défense pour diminuer la probabilité de rencontre avec différents parasites. Cependant, ces stratégies comportementales n’ont été que peu étudiées chez les espèces de mammifères vivant en mi

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13

Kleeberg, Isabelle [Verfasser]. "The importance of recognition and aggression in the coevolution between ant social parasites and their hosts / Isabelle Kleeberg." Mainz : Universitätsbibliothek Mainz, 2016. http://d-nb.info/1103475118/34.

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14

Schaik, Antoon Jacobus van [Verfasser]. "The influence of host social system on host-parasite evolutionary dynamics / Antoon Jacobus van Schaik." Konstanz : Bibliothek der Universität Konstanz, 2016. http://d-nb.info/1118373596/34.

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15

Lindström, Karin M. "Bird-parasite interactions : Using Sindbis virus as a model system." Doctoral thesis, Uppsala University, Department of Evolutionary Biology, 2000. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-486.

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<p>This thesis focuses on the evolutionary interactions between birds and a parasite, the mosquito-borne Sindbis virus (Togaviridae, <i>Alphavirus</i>). In conclusion, the results show that the Sindbis virus is widespread among birds, and that the fitness of infected hosts may be reduced by the virus. Furthermore, viruclearance ability was revealed by male plumage traits, and viraemia was related to hormonal- and social status.</p><p>The distribution of Sindbis virus infections among passerine birds was examined in five areas in Sweden. Almost all species tested were infected, and three specie

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16

Defacq, Alice. "Les parasites de traduction : entre adaptation et fidélité : L'exemple des comédies musicales américaines." Phd thesis, Angers, 2011. https://theses.hal.science/tel-00972046.

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Depuis quelques années, les français se passionnent de nouveau pour les comédies musicales américaines. Elles sont généralement adaptées dans la langue du pays d'accueil, le français en l'occurrence. Ce travail de recherche se propose d'observer ,dans un premier temps, et de tenter de comprendre, dans un deuxième temps, les comportements des adaptateurs de comédies musicales anglo-américaines face aux éléments qui parasitent la compréhension directe d'un texte. Trois problèmes de traduction seront examinés plus particulièrement : l'onomastique, les titres et le registre. Plusieurs exemples iss

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Defacq, Alice. "LES PARASITES DE TRADUCTION : ENTRE ADAPTATION ET FIDÉLITÉ. L'EXEMPLE DES COMÉDIES MUSICALES AMÉRICAINES." Phd thesis, Université d'Angers, 2011. http://tel.archives-ouvertes.fr/tel-00972046.

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Depuis quelques années, les français se passionnent de nouveau pour les comédies musicales américaines. Elles sont généralement adaptées dans la langue du pays d'accueil, le français en l'occurrence. Ce travail de recherche se propose d'observer ,dans un premier temps, et de tenter de comprendre, dans un deuxième temps, les comportements des adaptateurs de comédies musicales anglo-américaines face aux éléments qui parasitent la compréhension directe d'un texte. Trois problèmes de traduction seront examinés plus particulièrement : l'onomastique, les titres et le registre. Plusieurs exemples iss

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18

Bauer, Sabine. "Coevolutionary dynamics and geographic mosaics in the Social Parasite Harpagoxenus sublaevis and its two Host Species." Diss., lmu, 2009. http://nbn-resolving.de/urn:nbn:de:bvb:19-107521.

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19

Missoh, Claudia. "Division of labor in anti-parasite defense strategies in ant colonies." Thesis, Paris 6, 2014. http://www.theses.fr/2014PA066450/document.

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La division du travail est une caractéristique clé chez les insectes sociaux et contribue à leur succès écologique. En ce qui concerne les tâches sanitaires, la division du travail au sein d’une colonie peut permettre de réduire la transmission des maladies, de libérer certaines ouvrières pour d’autres tâches, permettant de diminuer les couts associés à l’exécution des tâches sanitaires (sur le plan comportementale et physiologique). Les facteurs externes et internes aux individus déterminant leur participation aux tâches sanitaires ne sont pas bien connus. La plupart des études portent sur l’

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Bello, Ana Cristina Passos de Paiva. "A representação social do saber de trabalhadores rurais sobre o controle de parasitos em propriedades produtoras de leite." Universidade Federal de Minas Gerais, 2010. http://hdl.handle.net/1843/BUOS-8FMKAA.

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Within milk producing economic losses stem mainly from endo and ectoparasites frames in herds, and also the high cost for the misuse of pesticides. This investigation aimed to evaluate the new technologies for strategic control of integrated endo and ectoparasites of cattle and horses implementation during milk-producing farms routine. Through this work we concluded that the successful strategic control implementation in commercial property is directly related to the human dynamics relationships, which create bottlenecks in this process in the field, which are only detected when one understand

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21

Rodrigues, Da hora Riviane. "Stratégies de reproduction et parasitisme social chez la fourmi ponerine ectatomma tuberculatum (olivier)." Paris 13, 2003. http://www.theses.fr/2003PA132016.

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Chez les insectes eusociaux, la colonie est généralement caractérisée par la présence d'un individu reproducteur, la reine, et d'individus généralement stériles, les ouvrières. Cependant, plusieurs espèces montrent d'importantes variations concernant ce mode d'organisation sociale considérée comme typique, comme par exemple la fourmi ponérine Ectatomma tuberculatum (Olivier). Des études de terrain menées au Brésil et au Mexique couplées à des études comportementales et génétiques montrent que cette ponérine est facultativement polygyne et cette stratégie pourrait favoriser le maintien d'E. Tub

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22

Hanekom, Marc C. "The effect of brood and queen pheromones, as well as the colony environment, in the success of Apis mellifera capensis social parasites." Thesis, Link to the online version, 2007. http://hdl.handle.net/10019/426.

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23

August, Thomas Adam. "The social structure, ecology and pathogens of bats in the UK." Thesis, University of Exeter, 2012. http://hdl.handle.net/10036/4341.

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This thesis examines the ecology, parasites and pathogens of three insectivorous bat species in Wytham Woods, Oxfordshire; Myotis nattereri (Natterer’s bat), M. daubentonii (Daubenton’s bat) and Plecotus auritus (Brown long-eared bat). The population structure was assessed by monitoring associations between ringed individuals, utilising recent advances in social network analysis. Populations of both M. daubentonii and M. nattereri were found to subdivide into tight-knit social groups roosting within small areas of a continuous woodland (average minimum roost home range of 0.23km2 and 0.17km2 r

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Robins, Tara. "Social Change, Parasite Exposure, and Immune Dysregulation among Shuar Forager-Horticulturalists of Amazonia: A Biocultural Case-Study in Evolutionary Medicine." Thesis, University of Oregon, 2015. http://hdl.handle.net/1794/19317.

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The Hygiene Hypothesis and Old Friends Hypothesis focus attention on the coevolutionary relationship between humans and pathogens, positing that reduced pathogen exposure in economically developed nations is responsible for immune dysregulation and associated increases in chronic inflammation, allergy, and autoimmunity. Despite progress in testing these ideas, few studies have examined these relationships among populations undergoing the transition from traditional to more market-based lifestyles. The present study tests relationships between economic development and social change, altered in

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Aumer, Denise [Verfasser]. "The genetic control of the social parasitism in the Cape honey bee, A. m. capensis ESCH / Denise Aumer." Halle, 2018. http://d-nb.info/117651962X/34.

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Noach-Pienaar, Lee-Ann. "The effects of genotype and/or environment on the phenotypic expressions of mandibular gland signals in honeybees (Apis mellifera)." Thesis, Stellenbosch : Stellenbosch University, 2011. http://hdl.handle.net/10019.1/6887.

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Thesis (PhD (Botany and Zoology))--Stellenbosch University, 2011.<br>ENGLISH ABSTRACT: Insect societies utilize advanced chemical communication systems to organize many aspects of their social life, which among others, include reproduction, thus maintaining colony homeostasis. The queen pheromone complex (QMP), dominated by (E)-9-keto-2-decenoic acid (9ODA) is of integral importance in regulating worker reproductive development. Unique characteristics, associated with reproductive dominance, enabled the successful establishment of Apis mellifera capensis workers as social parasites (or p

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Silva, Juliana Vasconcelos Lyra da. "Parasitoses, estado nutricional, consumo alimentar e indicadores sociais em crianças e adolescentes residentes em uma área de invasão em Maceió, Alagoas." Universidade Federal de Alagoas, 2008. http://repositorio.ufal.br/handle/riufal/910.

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Common problems in the developing countries includes protein-energy undernutrition and iron deficiency anemia. These nutritional deficiencies are commonly associated with intestinal parasites, causing damage to growth and development and increasing the risk to morbidity-mortality. However, studies have shown controversy about this relationship. This study aimed to evaluate the association between parasitic, nutritional status, food intake and social indicators in children and adolescents, living in a slum area of Maceio, Alagoas. A cross-sectional was taken in a public with 367 individuals und

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Lattorff, Hans Michael Georg [Verfasser], Robin Frederik Alexander [Akademischer Betreuer] Moritz, Paul [Akademischer Betreuer] Schmid-Hempel, and Mark J. F. [Akademischer Betreuer] Brown. "The other side of sociality : susceptibility to parasites in social insects ; [kumulative Habil.-Schr.] / Hans Michael Georg Lattorff. Betreuer: Robin Frederik Alexander Moritz ; Paul Schmid-Hempel ; Mark J. F. Brown." Halle, Saale : Universitäts- und Landesbibliothek Sachsen-Anhalt, 2012. http://d-nb.info/1031421270/34.

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Alves, Denise de Araujo. "Estratégias reprodutivas em Melipona, com ênfase em pequenas populações de Melipona scutellaris (Apidae, Meliponini)." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/41/41134/tde-28092010-123251/.

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As abelhas sem ferrão exercem importante papel ecológico como polinizadores de muitas espécies vegetais das regiões tropicais e tem significativo potencial para uso na polinização de culturas agrícolas. Contudo, com a contínua degradação de habitats, as populações de inúmeras espécies tem se tornado cada vez menores e separadas umas das outras por grandes distâncias. A criação de espécies de abelhas é um componente essencial para a conservação da biodiversidade, além de uma alternativa de fonte de renda. Para tanto, esforços de conservação e programas de criação em escala comercial requerem um

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Uppstrom, Kaitlin A. "Mites (Acari) Associated with the Ants (Formicidae) of Ohio and the Harvester Ant, Messor pergandei, of Arizona." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1279217236.

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Barcelos, Daniella Silva. "Aspectos cl?nicos e parasit?rios de c?es infectados naturalmente por Leishmania spp. em duas ?reas de transmiss?o intensa com diferentes caracter?sticas ambientais e sociais." Universidade Federal Rural do Rio de Janeiro, 2009. https://tede.ufrrj.br/jspui/handle/tede/918.

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Made available in DSpace on 2016-04-28T20:18:34Z (GMT). No. of bitstreams: 1 2009 - Daniella Silva Barcelos.pdf: 1592919 bytes, checksum: afab6af83d7cc48d9a18a17cb81cfb37 (MD5) Previous issue date: 2009-03-31<br>The canine visceral leshmaniasis is an important public health disease in Brazil and around the word. Dogs are considered important reservoir and source of Leshmania infantum infection to human due to their high prevalences of infection, the presence of amastigote forms in the skin and because they are found in the domestic and peri-domestic environment. The objective of this study w

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Eslami, Seyed-Jalal. "Comportement de ponte, fécondité et descendance de l'hyménoptère grégaire dinarmus vagabundus." Tours, 1985. http://www.theses.fr/1985TOUR4009.

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Grégarisme larvaire de d. V. ; rang de ponte des oeufs haploides et diploides, conséquences de l'augmentation de la densité des femelles fondatrices sur le parasitisme des hôtes, conséquences de la compétition sexuelle entre mâles dans l'évolution du rapport des sexes et bilan nutritionnel en fonction de la densité larvaire au cours du developpement.

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Tolvanen, J. (Jere). "Informed habitat choice in the heterogeneous world: ecological implications and evolutionary potential." Doctoral thesis, Oulun yliopisto, 2018. http://urn.fi/urn:isbn:9789526218939.

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Abstract Animals live in a heterogeneous world where threats and abundance and quality of resources vary across space and time. Heterogeneity induces uncertainty in decisions that animals must make, e.g., where to breed. Adaptive decisions may be facilitated by personally collecting information on the quality of the environment and by observing the behaviour and success of other individuals. Such social information use is common in nature. I investigate information use in relation to ecological threats (brood parasites, nest predators) and long-term information use in breeding site choice in t

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Rizgalla, Jamila. "An investigation of the health status of wild Libyan dusky grouper, Epinephelus marginatus (Lowe), with characterisation of a new disease, Dusky Grouper Dermatitis (DGD)." Thesis, University of Stirling, 2016. http://hdl.handle.net/1893/24983.

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The dusky grouper Epinephelus marginatus (Lowe 1834), is a protogynous sequential hermaphrodite and is considered to be one of the most important fish species in the Mediterranean Sea. It is a K-strategist, being slow growing and late maturing, and this, coupled with its reproductive biology and relatively sedentary behaviour, has made it extremely sensitive to overexploitation, leading it to be classified by the IUCN as an endangered fish species. Wild dusky grouper have suffered from disease outbreaks in the past decade, leading to mass mortalities across the Mediterranean Sea, including Lib

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Adams, Rachelle Martha Marie. "Unraveling the origins of social parasitism in Megalomyrmex ants." 2008. http://hdl.handle.net/2152/17288.

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Social parasitism, the exploitation of a society by other social organisms, has evolved independently numerous times within social animals. In this thesis, I integrate behavioral, evolutionary and chemical analyses to elucidate the evolution of social parasitism in Megalomyrmex ants. I examine host-parasite interactions in two Megalomyrmex species, identify venom alkaloids, and reconstruct the phylogenetic relationships between species. In Chapter 1, I analyze nest architecture and behavioral interactions between the ant host Cyphomyrmex cornutus and its parasite Megalomyrmex mondabora. This

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Müller, Nadine. "The costs and benefits of sociality in semi-free ranging Barbary macaques (Macaca sylvanus)." Doctoral thesis, 2018. http://hdl.handle.net/11858/00-1735-0000-002E-E5B7-1.

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Bogusch, Petr. "Aggressive mimikry among nest cleptoparasites and social parasites (Insecta: Hymenoptera: Apoidea)." Doctoral thesis, 2006. http://www.nusl.cz/ntk/nusl-386430.

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"Prey-predator “Host-parasite” Models with Adaptive Dispersal: Application to Social Animals." Doctoral diss., 2017. http://hdl.handle.net/2286/R.I.46222.

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abstract: Foraging strategies in social animals are often shaped by change in an organism's natural surrounding. Foraging behavior can hence be highly plastic, time, and condition dependent. The motivation of my research is to explore the effects of dispersal behavior in predators or parasites on population dynamics in heterogeneous environments by developing varied models in different contexts through closely working with ecologists. My models include Ordinary Differential Equation (ODE)-type meta population models and Delay Differential Equation (DDE) models with validation through data. I

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CINI, ALESSANDRO. "Find, conquer and exploit: proximate and ultimate factors affecting social parasitism in paper wasps." Doctoral thesis, 2010. http://hdl.handle.net/2158/486265.

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Härtel, Stephan [Verfasser]. "Evolution of intraspecific social parasitism in honeybee workers (Apis mellifera capensis Esch) / von Stephan Härtel." 2006. http://d-nb.info/985246642/34.

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Neumann, P., S. E. Radloff, R. F. A. Moritz, H. R. Hepburn, and S. L. Reece. "Social parasitism by honeybee workers (Apis mellifera capensis Escholtz): host finding and resistance of hybrid host colonies." 2001. http://eprints.ru.ac.za/313/1/Social_parasitism_by_honeybee_workers.pdf.

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We studied possible host finding and resistance mechanisms of host colonies in the context of social parasitism by Cape honeybee (Apis mellifera capensis) workers. Workers often join neighboring colonies by drifting, but long-range drifting (dispersal) to colonies far away from the maternal nests also rarely occurs. We tested the impact of queenstate and taxon of mother and host colonies on drifting and dispersing of workers and on the hosting of these workers in A. m. capensis, A. m. scutellata, and their natural hybrids. Workers were paint-marked according to colony and reintroduced into the

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Neumann, P., S. E. Radloff, R. F. A. Moritz, H. R. Hepburn, and Sacha Louise Reece. "Social parasitism by honeybee workers (Apis mellifera capensis Escholtz): host finding and resistance of hybrid host colonies." 2001. http://hdl.handle.net/10962/d1011860.

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We studied possible host finding and resistance mechanisms of host colonies in the context of social parasitism by Cape honeybee (Apis mellifera capensis) workers. Workers often join neighboring colonies by drifting, but long-range drifting (dispersal) to colonies far away from the maternal nests also rarely occurs. We tested the impact of queenstate and taxon of mother and host colonies on drifting and dispersing of workers and on the hosting of these workers in A. m. capensis, A. m. scutellata, and their natural hybrids. Workers were paint-marked according to colony and reintroduced into the

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Włodarczyk, Tomasz. "Interspecific transfer of recognition cues and nestmate recognition in mixed colonies of the facultative social parasitic ant species Formica sanguinea." Doctoral thesis, 2016. https://depotuw.ceon.pl/handle/item/1932.

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Niektóre gatunki owadów społecznych przebyły drogę ewolucyjną prowadzącą do pasożytniczego trybu życia, tj. do różnych form eksploatacji systemu społecznego gospodarza. Jedną z form pasożytnictwa społecznego mrówek jest tzw. niewolnictwo (dulozja), polegające na wykorzystywaniu pracy robotnic innych gatunków, porywanych z ich gniazd jako poczwarki podczas rajdów rabunkowych i zanoszonych do gniazda pasożyta, gdzie kończą swój rozwój. Owady społeczne do rozróżniania osobników swoich i obcych wykorzystują węglowodory oraz lipidy pokrywające powierzchnię ich ciała. Każdą kolonię charakteryzuje sw

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Bauer, Sabine [Verfasser]. "Coevolutionary dynamics and geographic mosaics in the social parasite Harpagoxenus sublaevis and its two host species / vorgelegt von Sabine Maria Veronika Bauer (geb. Demel)." 2009. http://d-nb.info/998370851/34.

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Qureshi, Nadine. "Malaria : a cause and effect of poverty : frequently asked questions." 2009. http://hdl.handle.net/2429/14674.

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"Cultural Transmission and the Disease Ecology of Tuberculosis in Indigenous Communities of the Paraguayan Chaco." Doctoral diss., 2014. http://hdl.handle.net/2286/R.I.27431.

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abstract: The health situation of indigenous peoples is comparable to that of the world's poorest populations, but with the additional burdens of social and cultural marginalization, geographic and cultural barriers to accessing health services, and, in some areas, appropriation of land and natural resources. Cultural transmission (the transfer of beliefs, ideas, and behaviors from one culture to another) from outsider health institutions should presumably aid in closing this health gap by transferring knowledge, practices, and infrastructure to prevent and treat disease. This study examines t

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Rabeling, Christian. "Diversity and evolution of reproductive systems in Mycocepurus fungus-growing ants." Thesis, 2010. http://hdl.handle.net/2152/ETD-UT-2010-05-1332.

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The general prevalence of sexual reproduction over asexual reproduction among metazoans testifies to the evolutionary, long-term benefits of genetic recombination. Despite the benefits of genetic recombination under sexual reproduction, asexual organisms sporadically occur throughout the tree of life, and a few asexual lineages persisted over significant evolutionary time without apparent recombination. The study of asexual organisms therefore may provide clues to answer why almost all eukaryotes reproduce via meiosis and syngamy and why asexual eukaryotes are almost always evolutionarily sh

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Simões, Sara de Almeida. "Skin mark patterns of bottlenose dolphins (Tursiops truncatus) in the Ría de Arousa, Galicia (Spain)." Master's thesis, 2019. http://hdl.handle.net/10773/27927.

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Cetaceans frequently display skin marks which can be caused by diseases, parasites, and interactions among conspecifics and with human activities. For the present study, we used one year of photo-identification data for resident bottlenose dolphins of the Ría de Arousa (NW Spain). The aims of this study were to assess the types of skin marks found on bottlenose dolphins and compare them between adult males and females. Four body sections (anterior, ventral, central, and posterior) were defined to assess the prevalence, abundance, richness, and distribution of the marks. Boat-based surveys were

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Mejzr, Martin. ""Kdo nepracuje, ať nejí" : Fenomén "příživnictví" v socialistickém Československu." Master's thesis, 2019. http://www.nusl.cz/ntk/nusl-404421.

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Presented diploma thesis is occupied with issues of so-called "social parasitism" in the socialist Czechoslovakia in early normalization era. It follows existence of a law term "social parasitism", or more precisely independent paragraph which criminalized "fishy ways of livelihood" and "avoiding righteous job" within the Czechoslovakia penal code. I would like to observe this marginal social phenomenon in a broad perspective. So-called "social parasitism" is understood as a normative, disciplinary and symbolical category which defined basic value hierarchy of socialistic society and had to he

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NIERI, RACHELE. "Insect vibrational communication: description, decoding, and manipulation." Doctoral thesis, 2017. http://hdl.handle.net/2158/1079400.

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Vibrations are extremely widespread and ancient among animals’ communication modalities; nevertheless, their importance has been neglected for many years. During my PhD I wanted to increase the knowledge about the role of vibrational signals in insects. Therefore, I conducted behavioral bioassays and laser vibrometer recordings to describe and decipher vibrations produced by four species belonging to two different orders. The role of vibrational signals in intraspecific communication varies widely among different groups of insects. For this reason I chose to study two model groups, Hemiptera a

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