Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 20 for “"Social behavior in animals"”.
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Social behaviour of captive belugas, Delphinapterus leucas
Focal-animal sampling techniques developed for investigating social behaviour of terrestrial animals were adapted for studying captive belugas, providing quantitative descriptions of social relationships .among individuals. Five groups of captive belugas were observed, allowing a cross-sectional …
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Orchestration : the movement and vocal behavior of free-ranging Norwegian killer whales (Orcinus orca)
Studying the social and cultural transmission of behavior among animals helps to identify patterns of interaction and information content flowing between individuals. Killer whales are likely to acquire traits culturally based on their population-specific feeding behaviors and group-distinctive …
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Do females counter against costly males in the degu, Octodon degus?
Sexual conflict over reproduction may result in females incurring reproductive costs from males. Females may counter against costly males through social support from cohesive relationships with other females. In plural breeders, social support may promote communal offspring care, improving the …
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Does personality affect competition, social organization, and fitness? a study using a small social mammal, Octodon degus
… represents consistent variation among individual behaviors that are repeatable across time and contexts. Recent research in behavioral ecology has revealed that animal personality influences ecological and evolutionary processes, and a growing number of studies demonstrate that …
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Kin and social network structure in two populations of Octodon degus
A growing body of evidence showing that individuals of some species live in non-kin groups suggests kin selection is not required in all species for sociality to evolve. Here I investigate two populations of Octodon degus, a South American rodent which has been shown to form kin and non-kin groups. …
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Consequences of the environment: timing of litter parturition and offspring survival in the social rodent Octodon degus
Variation in the timing of offspring parturition determines the environmental factors they experience during early development and their likelihood for survival. I used an 11-year dataset on a natural, free-living population of degus (Octodon degus), a social rodent endemic to Chile, to test …
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Mechanisms driving social structure in Octodon degus
… report results of a study on the mechanisms shaping social network structure in Octodon degus, a diurnal, semi-fossorial rodent endemic to Chile. Using data collected over three seasons (2022–2023), we tested the roles of nighttime spatial proximity, female social cohesion, and female homophily …
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Harsh and variable ecological conditions modulate the relationship between social structure and direct fitness in a plurally breeding small mammal
… modulate the fitness benefits associated with increased group size in some species. Social network analysis is a more powerful approach to examine this relationship, as the quality of interactions is more important than quantity. Using 9 years of data, I determined how mean and coefficient of …
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Whistle use and whistle sharing by allied male bottlenose dolphins, Tursiops truncatus
Male dolphins form stable, long-term alliances comparable to long-term relationships formed by terrestrial species. The goal of this thesis was to determine the effect of the formation of these alliances on vocal development. Comparing whistles produced in isolation revealed that alliance partners …
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Personality and affiliation involving a cooperative task in bottlenose dolphin (Tursiops Truncatus) Dyads
Cooperation may be related to personality in bottlenose dolphin (Tursiops truncatus) dyads. Five bottlenose dolphin pairs at the Roatan Institute for Marine Sciences (RIMS), Honduras, were presented with an apparatus released a food reward if opened cooperatively. I created personality profiles of …
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Intergroup Encounters in Grey-Cheeked Mangabeys (Lophocebus albigena) and Redtail Monkeys (Cercopithecus ascanius): Form and Function
… and populations, encounters between neighboring social groups take a variety of forms. In particular, intergroup encounters (IGEs) may or may not be aggressive and may include the participation of males and/or females. The proximate causes of aggressive participation by each sex, particularly …