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对鱼Opistognathus iyonis的生殖行为和蛋发育进行了水下分析

Yuki Nemoto¹, Tomoyuki Ogawa²

¹Department of Veterinary Radiology, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan.

Journal of fish biology

|June 3, 2023

概括

这项研究详细介绍了日本鱼Opistognathus iyonis的繁殖行为和胚胎发育情况. 雄性口服卵12天,温度影响发育,为鱼生命周期提供了新的见解.

科学领域:

鱼类学鱼类学鱼类学
海洋生物学海洋生物学
生殖生态学生殖生态学

背景情况:

鱼 (Opistognathidae) 是一种在亚热带海洋中发现的加密鱼.
鱼的繁殖行为和生命周期仍然不太清楚.
Opistognathus物种是孤独的,居住在洞穴中,并表现出雄性口腔繁殖.

研究的目的:

描述Opistognathus iyonis. 的自然繁殖和胚胎发育.
在自然息地记录繁殖时间,蛋护理和化.
研究环境因素对鱼胚胎发育的影响.

主要方法:

在日本山口进行了三年多的水下调查.
观察到的产卵,卵和化事件.
记录环境参数,例如水温.

主要成果:

产卵发生在日出附近,雌性进入雄性洞穴.
雄性在48.2天内口服繁殖平均4.4个蛋.
卵子在12天内化,平均温度为20.8°C,温度与发育时间明显相关.
男鱼通过口腔操纵积极照顾蛋.
化发生在日落后,卵子通过下向上排斥.

结论:

这项研究提供了Opistognathus iyonis在自然环境中的第一个详细报告.
环境因素,特别是水温,对鱼胚胎发育持续时间起着重要作用.
雄性口腔繁殖和特定的化机制突出显示了鱼繁殖中的独特适应性.

关键词:

这种动物名为Opistognathus iyonis.塞托内陆海塞托内陆海苏奥西玛玛 (Suo-Osima) 是一个密码鱼是一种加密鱼.卵子的发育卵子的发育鱼鱼鱼是一个生殖行为生殖行为.在水下分析分析.

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