Determination of the Female-Biased Sex Ratio in Some Young-of-the-Year and Spawner Samples of the Threespine Stickleback Gasterosteus aculeatus by Environmental, Not Genetic, Factors

Artamonova V. S.; Bardukov N. V; Golovin P. V; Ivanova T. S.; Ivanov M. V; Lajus D. L.; Makhrov A. A.

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Determination of the Female-Biased Sex Ratio in Some Young-of-the-Year and Spawner Samples of the Threespine Stickleback Gasterosteus aculeatus by Environmental, Not Genetic, Factors

机译：通过环境，非遗传，因素，在一些年幼的年幼和患有血管刺激性气体痤疮患者的患者和水平样本中的雌性偏见的性别比例的测定

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Genetic markers (sex-specific loci of Ga1 and Ga2) have been used to analyze the sex ratio of the threespine stickleback at different stages of ontogenesis. The progeny of all individually tested females includes both males and females, and no significant departures from a 1 : 1 sex ratio has been found in embryos from the natural nests. Juveniles did not demonstrate a sex bias up to one-and-a-half or two months of age, but in older juveniles, females prevailed (this fact has been reported for the first time). Females prevail among spawners, which mostly results from the predominant elimination of males during the spawning and post-spawning periods. The possible causes of this predominance are discussed.

机译：遗传标记（GA1和GA2的性别特异性基因座）已被用于分析血管生成的不同阶段的血腥岩虫的性别比。所有单独测试的女性的后代包括男性和女性，并且在自然巢中的胚胎中没有发现1：1的性别比例。少年没有表现出一个半衰期的性偏见，但在老年人中，女性普遍存在（第一次报道这个事实）。女性在产卵者中占有平，主要是在产卵期间的主要消除雄性和产卵后的时期。讨论了这主要的可能原因。

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《Biology Bulletin》 |2021年第5期|577-587|共11页
作者
Artamonova V. S.; Bardukov N. V; Golovin P. V; Ivanova T. S.; Ivanov M. V; Lajus D. L.; Makhrov A. A.;
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Russian Acad Sci Severtsov Inst Ecol & Evolut Moscow 119071 Russia;

Russian Acad Sci Severtsov Inst Ecol & Evolut Moscow 119071 Russia;

St Petersburg State Univ St Petersburg 199934 Russia;

St Petersburg State Univ St Petersburg 199934 Russia;

St Petersburg State Univ St Petersburg 199934 Russia;

St Petersburg State Univ St Petersburg 199934 Russia;

Russian Acad Sci Severtsov Inst Ecol & Evolut Moscow 119071 Russia|St Petersburg State Univ St Petersburg 199934 Russia;

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Determination of the Female-Biased Sex Ratio in Some Young-of-the-Year and Spawner Samples of the Threespine Stickleback Gasterosteus aculeatus by Environmental, Not Genetic, Factors

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