منابع مشابه
formation and evolution of regional organizations: the case study of the economic cooperation organization (eco)
abstract because of the many geopolitical, geo economical and geo strategically potentials and communicational capabilities of eco region, members can expand the convergence and the integration in base of this organization that have important impact on members development and expanding peace in international and regional level. based on quality analyzing of library findings and experts interv...
15 صفحه اولDevelopmental plasticity in sexual roles of butterfly species drives mutual sexual ornamentation.
Current explanations for why sexual ornaments are found in both sexes include genetic correlation, same sex competition, and mutual mate choice. In this study, we report developmental plasticity in mating behavior as induced by temperature during development in the butterfly Bicyclus anynana. Males and females reciprocally change their sexual roles depending on their larval rearing temperatures...
متن کاملThe ecology and evolution of female-specific ornamentation in the dance flies (Diptera: Empidinae)
Elaborate morphological ornaments can evolve if they increase the reproductive success of the bearer during competition for mates. However, ornament evolution is incredibly rare in females, and the type and intensity of selection required to develop female-specific ornamentation is poorly understood. The main goals of my thesis are to clarify the relationship between the type and intensity of s...
متن کاملEffects of ornamentation and phylogeny on the evolution of wing shape in stalk-eyed flies (Diopsidae).
Exaggerated male ornaments are predicted to be costly to their bearers, but these negative effects may be offset by the correlated evolution of compensatory traits. However, when locomotor systems, such as wings in flying species, evolve to decrease such costs, it remains unclear whether functional changes across related species are achieved via the same morphological route or via alternate cha...
متن کاملSexual selection, natural selection and the evolution of dimorphic coloration and ornamentation in agamid lizards.
Both sexual selection and natural selection can influence the form of dimorphism in secondary sexual traits. Here, we used a comparative approach to examine the relative roles of sexual selection and natural selection in the evolution of sexually dimorphic coloration (dichromatism) and ornamentation in agamid lizards. Sexual dimorphism in head and body size were used as indirect indicators of s...
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ژورنال
عنوان ژورنال: Animal Behaviour
سال: 2007
ISSN: 0003-3472
DOI: 10.1016/j.anbehav.2006.12.027