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首页> 外文期刊>Journal of Fish Biology >Social status determines sexual phenotype in the bi-directional sex changing bluebanded goby Lythrypnus dall
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Social status determines sexual phenotype in the bi-directional sex changing bluebanded goby Lythrypnus dall

机译：社会地位决定双向变性蓝带虾虎鱼Lythrypnus dall的性表型

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摘要

The behavioural mechanisms and patterns of protandrous sex change in bluebanded gobies Lythrypnus dalli were investigated and compared to the well-described behaviour patterns of protogynous sex change. To do this, unisex groups of males and females were established; behavioural and anatomical changes were recorded over a 42 day period as social status and sexual phenotype were determined. In all cases, social status, rather than the expression of a particular behaviour, accurately predicted final sexual phenotype. Rates of submissive behaviour, but not aggressive behaviour, were predictive of each discrete status class. Multiple individuals changed sex simultaneously if their sexual phenotype and social status were discordant, a novel finding suggesting that once a social hierarchy is established, individuals determined their sexual phenotype, regardless of initial sex, based on a simple operational principle: if subordinate express female, if dominant or not subordinate express male. This work demonstrates that similar mechanisms underlie sex change in both directions in L. dalli and potentially other sex changing species.
机译：研究了蓝带虾虎鱼Lythrypnus dalli的前生殖器性别变化的行为机制和模式，并将其与雌雄同体的性别变化的行为模式进行了比较。为此，建立了男女通用的男女通用的群体。随着社会地位和性表型的确定，在42天内记录了行为和解剖变化。在所有情况下，社会地位而不是特定行为的表达都可以准确预测最终的性表型。顺从行为的比率，而不是侵略行为的比率，可以预测每个离散状态类别。如果性表型和社会地位不一致，则多个人会同时改变性别，这是一项新颖的发现，表明一旦建立了社会等级制度，人们将基于简单的操作原则确定其性表型，而不论其最初的性别是什么：是否占主导地位或不隶属表达男性。这项工作表明，类似的机制是达利乳杆菌和其他可能发生性别改变的物种在两个方向的性别改变的基础。

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