Wild yellow dung fly females may not select sperm based on dung pat microclimate but could nevertheless benefit from polyandry
نویسندگان
چکیده
منابع مشابه
The fluid dynamics of yellow dung fly sperm flow
The mechanisms regulating sperm transfer, storage, and use in insects are far from clear. Even in one of the most well-resolved systems for studying post-copulatory sexual selection, the yellow dung fly (Scathophaga stercoraria), the process of sperm transfer is not well understood. Our aim is to model the fluid dynamics of sperm flow in the reproductive tracts of female yellow dung flies to de...
متن کاملSperm Displacement in the Yellow Dung Fly, Scatophaga stercoraria: An Investigation of Male and Female Processes.
Despite the ubiquity with which patterns of sperm utilization have been studied, the mechanisms underlying fertilization in insects are far from clear. One well-studied system is the yellow dung fly, in which the last male's ejaculate is thought to displace rival sperm from the female's sperm stores. Here we follow the movement of the copulating male's ejaculate through the female's reproductiv...
متن کاملHeteropopulation males have a fertilization advantage during sperm competition in the yellow dung fly (Scathophaga stercoraria).
Sexual conflict occurs whenever there is not strict genetic monogamy. The sexually antagonistic coevolution that potentially occurs because of this conflict involves adaptation by one sex followed by the counter-adaptation by the other, and may be thought of as an evolutionary arms-race. As a result of these cycles of antagonistic coevolution, females from one population may be less resistant t...
متن کاملDung Beetles and Microbial Decomposition of Dung
Dung beetles belong to the superfamily Scarabaeoidea, and are mostly within the subfamilies of Scarabaeinae and Aphodiinae. They are given their name because they feed partially or exclusively on feces. Each species of dung beetles can be classified as one of several types: rollers, tunnelers and dwellers. Rollers roll the dung into round balls, which are then used for brooding chambers or as a...
متن کاملSize-dependent alternative male mating tactics in the yellow dung fly, Scathophaga stercoraria.
Whenever males can monopolize females and/or resources used by females, the opportunity for sexual selection will be great. The greater the variation among males in reproductive success, the greater the intensity of selection on less competitive males to gain matings through alternative tactics. In the yellow dung fly, Scathophaga stercoraria, males aggressively compete for access to receptive,...
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ژورنال
عنوان ژورنال: Evolutionary Ecology
سال: 2011
ISSN: 0269-7653,1573-8477
DOI: 10.1007/s10682-011-9519-1