Elizabeth Tinsley Johnson,Noah Snyder-Mackler,Amy Lu et al.
Elizabeth Tinsley Johnson et al.
Many nonseasonally breeding mammals demonstrate some degree of synchrony in births, which is generally associated with ecological factors that mediate fecundity. However, disruptive social events, such as alpha male replacements, also have ...
Temporal migration patterns and mating tactics influence size-assortative mating in Rana temporaria [0.03%]
蝌蚪迁移模式和交配策略影响Rana temporaria的体型匹配交配行为
Carolin Dittrich,Ariel Rodríguez,Ori Segev et al.
Carolin Dittrich et al.
Assortative mating is a common pattern in sexually reproducing species, but the mechanisms leading to assortment remain poorly understood. By using the European common frog (Rana temporaria) as a model, we aim to understand the mechanisms l...
Joint care can outweigh costs of nonkin competition in communal breeders [0.03%]
合作抚养后代可以抵消群栖物种中非亲缘个体竞争带来的不利影响
Kat Bebbington,Eleanor A Fairfield,Lewis G Spurgin et al.
Kat Bebbington et al.
Competition between offspring can greatly influence offspring fitness and parental investment decisions, especially in communal breeders where unrelated competitors have less incentive to concede resources. Given the potential for escalated...
Parental investment in Tibetan populations does not reflect stated cultural norms [0.03%]
藏族人群的父母投资行为与他们的文化观念不相符
Juan Du,Ruth Mace
Juan Du
In this paper, we examined both stated norms of sex preference and actual sex-biases in parental investment in a Tibetan pastoralist society. We collected detailed demographic data on infant mortality, infant feeding, the length of interbir...
Selfish partners: resource partitioning in male coalitions of Asiatic lions [0.03%]
自私的盟友：亚洲狮雄性联盟中的资源分割现象
Stotra Chakrabarti,Yadvendradev V Jhala
Stotra Chakrabarti
Behavioral plasticity within species is adaptive which directs survival traits to take multiple pathways under varying conditions. Male-male cooperation is an evolutionary strategy often exhibiting an array of alternatives between and withi...
Anne G Hertel,Jon E Swenson,Richard Bischof
Anne G Hertel
There is a growing recognition of the role of individual variation in patterns emerging at higher levels of biological organization. Despite the importance of the temporal configuration of ecological processes and patterns, intraspecific in...
Cognition, personality, and stress in budgerigars, Melopsittacus undulatus [0.03%]
玄凤鹦鹉（Melopsittacus undulatus）的认知、个性和压力反应
Angela Medina-García,Jodie M Jawor,Timothy F Wright
Angela Medina-García
To study the fitness effects of individual variation in cognitive traits, it is paramount to understand whether traits such as personality and physiological stress influence cognitive performance. We first tested whether budgerigars showed ...
Megan Petersdorf,Constance Dubuc,Alexander V Georgiev et al.
Megan Petersdorf et al.
Exaggerated male traits can evolve under intra- or intersexual selection, but it remains less clear how often both mechanisms act together on trait evolution. While the males of many anthropoid primate species exhibit colorful signals that ...
Marginal predation: do encounter or confusion effects explain the targeting of prey group edges? [0.03%]
边缘捕食：相遇效应或混淆效应解释了捕食者为何倾向于攻击猎物群体的边缘吗？
Callum Duffield,Christos C Ioannou
Callum Duffield
Marginal predation, also known as the edge effect, occurs when aggregations of prey are preferentially targeted on their periphery by predators and has long been established in many taxa. Two main processes have been used to explain this ph...
Joanna R Hall,Roland Baddeley,Nicholas E Scott-Samuel et al.
Joanna R Hall et al.
Motion is generally assumed to "break" camouflage. However, although camouflage cannot conceal a group of moving animals, it may impair a predator's ability to single one out for attack, even if that discrimination is not based on a color d...