Egg recognition and interspecific brood parasitism rates in red bishops (aves: ploceidae)

Article Abstract:

Red bishops reject eggs that are quite unlike their own light-blue ones. These rejected eggs are either heavily maculated or dark colored. Red bishops also do not discriminate mimetic cuckoo-egg models based on egg size, clutch size increase or the stage of the parasite egg's appearance in the nest. Although the eggs of diederik cuckoos can pass off as red bishops' eggs, parasitism is rare due to corporate vigilance and colony defense.

Birds, Bird eggs, Bird nests, Parasitic birds, Host-parasite relationships

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Determinants of reproductive success in freshwater amphipod species that experience different mortality regimes

Article Abstract:

The comparative study of Hyalella species indicates that the significance of male body size as a factor of reproductive success may be restricted in the lake species by the demographic outcome of size-based predation in the lake habitat. The promotion of a better comprehension of the interactive impact of sexual and feasibility selection on trait evolution which includes the creation of predictive models will need more research.

Analysis, Sexual behavior in animals, Animal sexual behavior, Courtship of animals, Mating behavior, Amphipoda, Amphipods

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