Long-term change in reproductive condition and evaluation of maternal effects in Pacific bluefin tuna, Thunnus orientalis, in the Sea of Japan
Long-term change in reproductive condition and evaluation of maternal effects in Pacific bluefin tuna, Thunnus orientalis, in the Sea of Japan
复制标题
日本海太平洋蓝鳍金枪鱼（Thunnus orientalis）生殖状况的长期变化和母体效应评估
DOI：
10.1016/j.fishres.2018.03.017
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发表时间：
2018
影响因子：
2.4
通讯作者：
N. Suzuki
中科院分区：
文献类型：
--
作者：
S. Ohshimo;Takuya Sato;Y. Okochi;Yuki Ishihara;A. Tawa;Masanori Kawazu;Y. Hiraoka;H. Ashida;N. Suzuki
为了评估日本海太平洋蓝鳍金枪鱼生殖特性和母体效应的长期变化，我们对最先进的卵母细胞组进行了组织学观察，并测量了批次繁殖力和卵直径。从1994年到2015年，我们对6767人进行了抽样调查。主要产卵期为6 ~ 8月，6、7、8月的产卵间隔期分别为1.34、1.18、1.10 d。在较高的海面温度下，卵直径可能较小，因为较高的海面温度下产卵间隔较短，蛋黄的储存时间有限。产卵期在整个调查年份是一致的。批繁殖力与叉长、批繁殖力与去内脏体重呈极显著正相关。计算了相对条件因子和相对批量繁殖力。广义线性模型表明，相对批次繁殖力与年度效应和叉长显著相关，卵径与年度效应和相对条件因子显著相关。我们的研究结果表明，营养更好的产卵者有更大的鸡蛋，更大的鸡蛋可以积极影响幼虫的存活率。
To evaluate long-term changes in reproductive characteristics and maternal effects in Pacific bluefin tuna in the Sea of Japan, we performed histological observations of the most advanced group of oocytes and measured batch fecundity and egg diameter. We sampled 6767 individuals from 1994 to 2015. The main spawning periods were from June to August, and the spawning intervals in June, July, and August were 1.34, 1.18, and 1.10 days, respectively. At higher sea surface temperatures, egg diameter might be smaller because the storage time of the yolk is limited due to the shorter spawning intervals at higher sea surface temperatures. Spawning periods were consistent throughout the survey years. There were significant positive correlations between batch fecundity and fork length and between batch fecundity and gutted body weight. The relative condition factor and relative batch fecundity were calculated. A generalized linear model showed that the relative batch fecundity was significantly correlated with year effects and fork length, and the egg diameter was significantly correlated with year effects and relative condition factor. Our results show that better nourished spawners have larger eggs, and larger eggs could positively affect the larval survival rate.
太平洋鱿鱼种群的波动与最近的气候变化有关。
DOI：
--
发表时间：
2002
期刊：
Fisheries Science 68 supplement
影响因子：
--
作者：
Sakurai;Y.;H.Kiyofuji;S.Saitoh;J.Yamamoto;T.Goto;K.Mori;T.Kinoshita
通讯作者：
T.Kinoshita
日本海沿岸太平洋蓝鳍金枪鱼幼鱼Thunnus orientalis的分布、生长和孵化日期
DOI：
--
发表时间：
2007
期刊：
Fisheries Science (印刷中)
影响因子：
--
作者：
Y.Tanaka;M.Mohri;H.Yamada
通讯作者：
H.Yamada