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Nest construction is an energetically costly behavior displayed by males in many taxa. In some species, males construct nests and co‐breed with other males and they may construct multiple nests in a breeding season. However, little is understood about how allocation of effort within and among nests affects male reproductive success. We characterized reproductive effort of male bluehead chub (Nocomis leptocephalus...
Sex pheromones function as species and sex recognition signals but can be equally important for mate assessment and choice. Adaptive mate choice requires the covariation of signal characteristics with fitness‐relevant traits, which can be achieved by condition‐dependent costs of signalling. Given a physiological link between signal production and other vital processes, such as immune system function,...
In sexually reproducing taxa, reproductive isolation is key to speciation. Given the speed with which behavioral reproductive isolation evolves, this form of isolation is of particular importance to rapidly evolving species. Here we examine behavioral reproductive isolation in a sympatric, congeneric pair of rock‐dwelling cichlids from Lake Malaŵi, testing the hypothesis that females should prefer...
Personality, or repeatable variation in behavior, may impact an animal's survival or reproduction. Parental aggression is one such personality trait with potentially direct implications for fitness, as it can improve offspring survival during vulnerable early life stages. We took advantage of a long‐term nest box and fledgling survival monitoring project to explore the potential fitness consequences...
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Adult female of the wolf spider Tigrosa helluo feeding on a cricket. These spiders produce draglines as they move through the environment, linear arrays that could be used to navigate back to their burrows after foraging. Under experimental conditions, adult female Tigrosa helluo are also able to learn other novel linear landmark features, reference frames, to navigate to a target goal...
Threat of predation often requires animals to seek refuge in unusual or suboptimal habitats. While aquatic refugia are thought to be used by many terrestrial animal species, there are challenges associated with aquatic refugia that could preclude their actual usefulness, particularly to air‐breathing ectotherms. Consequently, observations that can shed light on the evolution of antipredator strategies...
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