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Sexual dimorphism and diet segregation in the Black Skimmer Rynchops niger
(Nederlandse Ornithologische Unie, 2007-12)
Sexual segregation during foraging is common in birds and may occur at different temporal and spatial scales. In this study we explored the degree of sexual segregation in the Black Skimmer Rynchops niger by studying the ...
Assessing the diet and trophic niche breadth of an omnivorous fish (Glanidium ribeiroi) in subtropical lotic environments: Intraspecific and ontogenic responses to spatial variations
(2019-01-01)
The diet of Glanidium ribeiroi was investigated in lotic stretches downstream from a cascade of reservoirs to determine how it responds to intraspecific and environmental variations. Monthly sampling was performed from ...
Intraspecific variability in isotopic composition of a monomorphic seabird, the Common Tern ( Sterna hirundo ), at wintering grounds
(Csiro Publishing, 2019-04)
Understanding sex differences in foraging behaviour has important implications for breeding biology and population ecology. This requires the evaluation of segregation throughout the annual cycle, including the non-breeding ...
Stable isotopes reveal trophic segregation by sex and age in the southern giant petrel in two different food webs
(Inter-Research, 2005-12)
We investigated trophic ecology variation among colonies as well as sex- and age-related differences in the diet of the southern giant petrel Macronectes giganteus, a long-lived seabird that is sexually dimorphic in size. ...
Intraspecific, interspecific, and seasonal differences in the diet of three mid-sized carnivores in a large neotropical wetland
(Springer, 2014-01-01)
The diet and partitioning of food resources among mid-sized mammalian carnivores is poorly known, especially in the tropics. We evaluated the resource partitioning between Leopardus pardalis (ocelot), Cerdocyon thous ...
Intraspecific variation in mercury, δ 15 N, and δ 13 C among three Adélie Penguin (Pygoscelis adeliae) populations in the northern Antarctic Peninsula region
(Society of Environmental Toxicology and Chemistry, 2021-07)
Mercury (Hg) is a pervasive environmental contaminant that accumulates in the organs and tissues of seabirds at concentrations capable of causing acute or long-term adverse health effects. In this study, Hg concentrations ...
Segregation of diets by sex and individual in South American fur seals
(2022-03-01)
Trophic niche width and individual specialization among marine predators are often subjected to seasonal constraints. Differences are expected to arise for sexually dimorphic species exposed to distinct ecological ...
Ecología de forrajeo de dos especies de pinnípedos simpátricos estimada a través del análisis de ácidos grasos
(Universidad Peruana Cayetano HerediaPE, 2021)
La coexistencia y potencial competencia entre especies y su impacto sobre los recursos marinos es de interés para entender el comportamiento alimentario entre ellas. Para permitir la coexistencia de especies que ocupan un ...