Carbon sexual encounters in tarsus

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Environmentally driven sexual segregation in a marine top predator

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Drosophila melanogaster - Wikipedia

Sexual habitat segregation during the wintering period is a widespread phenomenon and has important implications for the ecology and conservation of migratory birds. We studied Black-and-white Warblers Mniotilta varia wintering in second-growth scrub and old-growth mangrove forest in Jamaica to quantify sexual habitat segregation and explore whether patterns of habitat occupation have consequences on physical condition. We used this information along with a body size analysis and simulated territorial intrusions to assess whether behavioral dominance or habitat specialization was responsible for habitat segregation. Based on standardized capture data, we found that females were more abundant than males in both scrub and mangrove forests. Foraging observations, however, suggested vertical segregation within each habitat, with females foraging primarily near the ground and males in the mid-canopy and canopy, indicating that our sex ratio estimates may be biased. Using 2 measures of body condition, we show that males were in better body condition than females, regardless of habitat. We found that males were on average slightly larger than females, and home range analysis and simulated territorial intrusions indicated that males were more territorial than females.
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Drosophila melanogaster is a species of fly the taxonomic order Diptera in the family Drosophilidae. The species is often referred to as the fruit fly , though its common name is more accurately the vinegar fly. Starting with Charles W. Woodworth 's proposal of the use of this species as a model organism , D.
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