Group sex ratio and sex reversal
作者： Douglas Y. Shapiro , Roger Lubbock
DOI: 10.1016/0022-5193(80)90048-X
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摘要: Abstract In hermaphroditic fishes, the initiation of sex reversal by male removal explains replacement lost males but does not explain how number in a group may increase. Since numerous species apparently cannot produce primary males, second means initiating must exist. present study we formulate model which suggests existence an additional mechanism governing change: as soon ratio adult females to within exceeds certain threshold value, female changes even though no has been removed. This process is inferred from comparison data collected Red Sea and western Indian Ocean with model's predictions concerning size at groups. The results suggest several ecological factors influence occurrence rate development growth social
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