Sexual size dimorphism in seabirds: Sexual selection, fecundity selection and differential niche-utilization

Article Abstract:

Phylogenetic comparative methods are used to test the selective processes that may influence seabird's sexual size dimorphism (SSD). It is concluded that sexual selection influences SSD in seabirds, however, results do not support the fecundity selection and the differential niche-utilization hypotheses.

United Kingdom, Sea birds, Seabirds

---

Why are American mink sexually dimorphic? A role for niche separation

Article Abstract:

Carcasses from three feral island populations of American mink were used to assess the degree of sexual dimorphism. It was argued that niche separation as a result of dimorphism in trophic features, though not the driving force behind sexual size dimorphism, might play a role in its maintenance.

Behavior, Niche (Ecology), Niches (Ecology), Minks

---

Sexual differences in response to larval food stress in two nuptial feeding orthopterans-implications for sexual selection

Article Abstract:

Food limitation is a naturally-occurring stress in the katydid Kawanaphila nartee (Orthoptera: Tettigoniidae) where hunger drives females to compete for copulations and thus acquire spermatophore meals. This increases sexual selection on females relative to males for increased body mass.

Orthoptera, Orthopterans

Similar abstracts:

• Abstracts: The major histocompatibility complex, sexual selection, and mate choice. Bird song: The interface of evolution and mechanism
• Abstracts: Theoretical models of species' borders: Single species approaches. Spatial and temporal heterogeneity of trophic variables in a deep lake as reflected by repeated singular samplings
• Abstracts: Frequency-dependent pollinator foraging in polymorphic Clarkia xantiana ssp. xantiana populations: Implications for flower colour evolution and pollinator
• Abstracts: Experimental methods for measuring gene interactions. Birth-death models in macroevolution. The functional significance of ribosomal (r) DNA variation: Impacts on the evolutionary ecology of organisms
• Abstracts: Frequency-dependent pollinator foraging in polymorphic Clarkia xantiana ssp. xantiana populations: Implications for flower colour evolution and pollinator. part 2

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.