Feral asses of volcano alcedo galapagos: behavioral ecology, spatial disribution and ocial organization
Feral asses were studied on Volcano Alcédo, Galapagos Islands, Ecuador, during the wet season of 1980. On the volcano rim during March/April, two stable groups were observed to have a `female (harem) defense’ polygynous mating system [Emlen, S.T., Oring, S.W., 1977. Ecology, sexual selection, and the evolution of mating systems. Science 197 (4300), pp. 215–223] […]
Differential foraging strategies: motivation, perception and implementation in urban free-ranging dogs, Canis familiaris
Animals exhibit intraspecific variation in foraging behaviour when alternative strategies are likely to fetch greater returns for one individual over another. The mechanisms underlying such variation are often behavioural, physiological or ecological in nature. We studied intraspecific variation in foraging strategies and its possible causes in a population of urban free-ranging dogs by accounting for […]
The combined behavioural tendencies of predator and prey mediate the outcome of their interaction
Consistent individual differences in behaviour are present in most animal populations. Historically, the fitness consequences of behavioural types (e.g. bold and shy) have been investigated in one focal species at a time. Studies generally disregard variation in heterospecifics that interact with those types. However, intraspecific variation in behavioural types of multiple interactors could generate dependent […]
Does environmental enrichment promote recovery from stress in rainbow trout?
The EU Directive on animal experimentation suggests that all protected animals should have enrichment to improve welfare yet relatively little research has been conducted on the impact of enrichment in fish. Studies employing enrichment in zebrafish have been contradictory and all fish species should be provided with species-specific enrichments relevant to their ecology. Salmonids are […]
To pair or not to pair: Sources of social variability with white-faced saki monkeys (Pithecia pithecia) as a case study
Intraspecific variability in social systems is gaining increased recognition in primatology. Many primate species display variability in pair-living social organizations through incorporating extra adults into the group. While numerous models exist to explain primate pair-living, our tools to assess how and why variation in this trait occurs are currently limited. Here I outline an approach […]