Effect of paternal life-history form and egg size on offspring life-history traits in masu salmon Oncorhynchus masou

Effect of paternal life-history form and egg size on offspring life-history traits in masu salmon Oncorhynchus masou
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马苏鲑鱼父系生活史形式和卵大小对后代生活史性状的影响

DOI:
10.1007/s10750-022-04922-9
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发表时间:
2022
期刊:
影响因子:
2.6
通讯作者:
Toshiaki Yamamoto and Shigeru Kiitanishi
Toshiaki Yamamoto and Shigeru Kiitanishi
中科院分区:
生物学3区
文献类型:
--
作者:
Kengo Kajitani;Takumi Ishikawa; Kimihiko Shibata;Tomoaki Kouya;Yoshio Kera;Shouji Takahashi;永田恵里奈・山本 涼太・菅原和宏;菅原和宏・永田恵里奈;Toshiaki Yamamoto and Shigeru Kiitanishi

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为了阐明父系生活史形式和卵大小对后代生活史性状的影响(例如,生长和成熟),我们研究了人工受精种群3年,使用标记-再捕获方法。在早期生活的后代的身体大小与鸡蛋的大小,但没有父亲的生活史形式。与此相反,在夏季和冬季的个体的增长率不受鸡蛋大小或父亲的生活史形式。支流内的运动男性和女性之间的差异,与男性相比,更多的女性在生命早期阶段向下游移动。但未检测到卵大小和父方生活史形式对子代运动的影响。在192只留在支流中的雄性中,有77只体型相对较大,在一岁时达到性成熟。成熟的概率与9月的身体大小,但不与父亲的生活史形式和鸡蛋的大小。我们的结论是,后代的生活史性状的深刻影响的环境条件,而他们是轻微的影响父母的遗传效应。
To clarify the effect of paternal life-history form and egg size on offspring life-history traits (e.g., growth and maturation) in masu salmon (Oncorhynchus masou), we studied an artificially fertilized population for 3 years using mark-recapture methods. The body size of offspring in early life was associated with egg size, but not paternal life-history form. By contrast, the growth rate of individuals during summer and winter seasons was not influenced by egg size or paternal life-history form. Movement within the tributary differed between males and females, with more females moving downstream during early life stages compared to males. However, the effects of egg size and paternal life-history form on the movement of offspring were not detected. Out of 192 males that remained in the tributary, 77 had relatively large body sizes and reached sexual maturity at one year old. The probability of maturation was associated with the body size in September, but not with paternal life-history form and egg size. We concluded that offspring life-history traits are profoundly influenced by environmental conditions, whereas they are slightly influenced by parental genetic effects.
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