日本Soleoidei鱼雌雄繁殖特性的比较

IF 1.4 Q3 MARINE & FRESHWATER BIOLOGY

International Aquatic Research Pub Date : 2020-06-01 DOI:10.22034/IAR(20).2020.1894262.1018

S. Katayama, Masayuki Yamamoto, T. Munroe

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引用次数: 0

摘要

在本研究中，我们检测了日本四种Soleidae鱼类的季节性繁殖特征和性腺体指数（GSI）的性别差异，以深入了解Soleidai鱼类的生活史特征。我们发现，其中一个物种的性别比明显偏向雌性，而其他三个物种的雄性和雌性频率没有显著差异。对于所有物种，成熟雄性的GSI值在0.5至1.5之间，明显低于成熟雌性（GSI:7-15），在体重正常化后，睾丸重量约为雌性卵巢重量的10%。雄性Soleidae鱼类较低的GSI值可能表明种群内存在有效的能量分配机制。

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Comparison of the reproductive traits of male and female Soleoidei fishes in Japan

In this study, we examined the seasonal reproductive traits and inter-sex differences in the gonadosomatic index (GSI) of four Soleidae fish species in Japan to gain insights into the life history traits of Soleoidei fishes. We found that the sex ratio of one of these species was significantly skewed toward females, whereas the other three species showed no significant differences in the frequencies of males and females. For all species, the GSI values for mature males were between 0.5 and 1.5, which were notably lower than those of mature females (GSI: 7-15), and the weight of testes was approximately 10% that of female ovaries, after normalizing for body weight. The lower GSI values of male Soleidae fish may be indicative of an effective energy allocation mechanism within populations.

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来源期刊

International Aquatic Research MARINE & FRESHWATER BIOLOGY-

CiteScore

2.40

自引率

7.70%

发文量

审稿时长

12 weeks

期刊介绍： The journal (IAR) is an international journal that publishes original research articles, short communications, and review articles in a broad range of areas relevant to all aspects of aquatic sciences (freshwater and marine). The Journal specifically strives to increase the knowledge of most aspects of applied researches in both cultivated and wild aquatic animals in the world. The journal is fully sponsored, which means it is free of charge for authors. The journal operates a single-blind peer review process. The main research areas in aquatic sciences include: -Aquaculture- Ecology- Food science and technology- Molecular biology- Nutrition- Physiology- Water quality- Climate Change