Effects of multiple stressors on fish shoal collective motion are independent and vary with shoaling metric
Collective movement is critical to the survival of some animals. Despite substantial progress in understanding animal collectives such as fish shoals and bird flocks, it is unknown how collective behaviour is affected by changes in multiple environmental conditions that can interact as stressors. Using a fully factorial repeated-measures design, we tested the independent and combined […]
Variation in the reproductive potential of Schistocephalus infected male sticklebacks is associated with 11-ketotestosterone titre
Parasites can impact host reproduction by interfering with host endocrine systems, but the adaptive nature of such effects is disputed. Schistocephalus solidus plerocercoids are parasites of three-spined sticklebacks Gasterosteus aculeatus that are often associated with impaired host reproduction. Here, we relate reproductive behavior and physiology to levels of the androgen 11-ketotestosterone (11KT) in naturally infected […]
Courtship and mate choice in fishes- integrating behavioral and sensory ecology
Sexual selection theory predicts a coevolution between male sexual ornamentation and female preference. The implication of this prediction for sensory ecology is that there should be a tight coupling between the physiology of male signal production and the physiology of female signal reception. Indicator models of sexual selection predict that male ornamentation is correlated with […]
Acoustic noise reduces foraging success in two sympatric fish species via different mechanisms
Effective foraging behaviour is essential for animals to survive and reproduce, and depends on many intrinsic and environmental factors. There is increasing evidence that man-made (anthropogenic) factors can affect the behaviour of a wide range of taxa. However, few experimental studies have investigated how foraging behaviour is affected by exposure to increased noise levels, an […]
Population-dependent conflict between individual sociability and aggressiveness
In some species, populations with the highest average aggressiveness also have the lowest sociability, suggesting a conflict between the expression of these behaviours. While this negative relationship has been found between populations, whether the same relationship can be found within a population, where the most aggressive individuals are also the least social ones, has not […]