Morphology in perch affects habitat specific feeding efficiency

Developmental Methylmercury Exposure Affects Swimming Behavior and Foraging Efficiency of Yellow Perch (Perca flavescens) Larvae

Methylmercury (MeHg) is a pervasive and ubiquitous environmental neurotoxicant within aquatic ecosystems, known to alter behavior in fish and other vertebrates. This study sought to assess the behavioral effects of developmental MeHg exposure on larval yellow perch (Perca flavescens)-a nonmodel fish species native to the Great Lakes. Embryos were exposed to MeHg (0, 30, 100, 300, and 1000 nM) f...

How Predictability of Feeding Patches Affects Home Range and Foraging Habitat Selection in Avian Social Scavengers?

Feeding stations are commonly used to sustain conservation programs of scavengers but their impact on behaviour is still debated. They increase the temporal and spatial predictability of food resources while scavengers have supposedly evolved to search for unpredictable resources. In the Grands Causses (France), a reintroduced population of Griffon vultures Gyps fulvus can find carcasses at thr...

Perch-height specific predation on tropical lizard clay models: implications for habitat selection in mainland neotropical lizards.

Predation has been hypothesized to be a strong selective force structuring communities of tropical lizards. Comparisons of perch height and size-based predation frequencies can provide a unique window into understanding how predation might shape habitat selection and morphological patterns in lizards, especially anoles. Here I use plasticine clay models, placed on the trunks of trees and suspen...

Compensatory behaviour in response to sulphide-induced hypoxia affects time budgets, feeding efficiency, and predation risk

Background: In habitats containing toxic hydrogen sulphide, fish breathe at the water’s surface to stay alive. This behaviour is called aquatic surface respiration. Questions: What effects does this compensatory behaviour have? Does it constrain individuals’ time budgets? Does it have a negative effect on foraging? Does it increase susceptibility to predators? Organisms and locations: Atlantic ...

Sexual dimorphisms in habitat-specific morphology and behavior in the green anole lizard