Journal of Ethology
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Opportunistic and restrictive matings among wild chimpanzees in the Mahale Mountains, Tanzania
Journal of Ethology - - 1983
Factors influencing mutual gaze in captive female Japanese monkeys (Macaca fuscata)
Journal of Ethology - Tập 29 - Trang 487-491 - 2011
Mutual gaze occurs when two animals simultaneously look at each other, and therefore signals reciprocal visual attention. We studied the occurrence of mutual gaze among adult female Japanese monkeys (Macaca fuscata) housed at the Central Park Zoo in New York City (USA). We found that the frequency of mutual gaze varied according to one aspect of social context (proximity), and that monkeys’ age-ra......
Consistent social structure within aggregations of the Australian lizard, Egernia stokesii across seven disconnected rocky outcrops
Journal of Ethology - Tập 25 Số 3 - Trang 263-270 - 2007
Predatory behaviour of common kestrels (Falco tinnunculus) in the wild
Journal of Ethology - Tập 27 - Trang 461-465 - 2009
The predatory behaviour of eight wild adult common kestrels (Falco tinnunculus) was recorded during predatory tests carried out in the wild under controlled conditions. Those birds were offered one laboratory mouse each, which was restrained on a base, thereby simulating natural predation. The predatory sequence was recorded directly, but also video-taped. The sequence was rather homogeneous among......
Reaction under the risk of predation: effects of age and sexual plasticity on defensive behavior in scorpion Tityus pusillus (Scorpiones: Buthidae)
Journal of Ethology - Tập 38 - Trang 13-19 - 2019
Differences in gender and age and the balance between aggressive behavior and the ability to escape are fundamental in predator–prey interactions, as well as for survival, foraging, and mating success. We investigated the defensive behavior of the scorpion Tityus pusillus and assessed possible differences in their behavior responses associated with sex, age, and diel period, by simulating a predat......
Agonistic behavior and feeding competition in the largest piranha species, Pygocentrus piraya, in a zoo
Journal of Ethology - Tập 41 - Trang 25-37 - 2022
In the wild, piranhas are thought to feed in groups. Previous studies on piranhas in aquariums have variously observed either social attraction or aggressive dominance. The Rio São Francisco piranha (Pygocentrus piraya) is the largest species of piranha. It is rare in aquarium collections and its social and feeding behaviors have never been studied. To better understand behavior in this species, w......
Dynamic decision-making in uncertain environments I. The principle of dynamic utility
Journal of Ethology - Tập 31 - Trang 101-105 - 2013
Understanding the dynamics or sequences of animal behavior usually involves the application of either dynamic programming or stochastic control methodologies. A difficulty of dynamic programming lies in interpreting numerical output, whereas even relatively simple models of stochastic control are notoriously difficult to solve. Here we develop the theory of dynamic decision-making under probabilis......
Affiliation in the social interactions in captivity of the torch tail rat, Trinomys yonenagae (Rodentia: Echimyidae)
Journal of Ethology - Tập 28 - Trang 105-112 - 2009
In a previous paper, we measured the affiliation between male individuals of Trinomys yonenagae and concluded that the intensity of affiliation was high and did not differ between animals from the same social group and from different social groups. In this paper, we report the results obtained with the same experimental procedure with female individuals. We also discuss sexual differences in the s......
Sex recognition in zebrafish (Danio rerio)
Journal of Ethology - Tập 29 - Trang 55-61 - 2010
We investigated sex recognition in female zebrafish (Danio rerio) to better understand the underlying sensory mechanisms and identify male secondary sexual traits. Females were simultaneously presented with two fish, a male and a female, in a flow-chamber apparatus, and females’ relative attraction towards males was observed under different conditions. With domesticated fish, females were more att......
Role of body size in dominance interactions between male water striders, Aquarius paludum
Journal of Ethology - - 2010
Tổng số: 903
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