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洞察尾魔鬼射线 (Mobula mobular) 的繁殖和成熟情况

Itsuki Kiyatake¹, Konomi Ito¹, Yusuke Yoshii¹

¹Fish Department, Osaka Aquarium Kaiyukan, Osaka, Osaka, Japan.

|January 17, 2025

概括

在囚禁中观察到旋尾魔鬼 (Mobula mobular) 的繁殖行为. 这项研究提供了对物种的关键见解.

科学领域:

海洋生物学海洋生物学
拉斯莫分支生殖生态生殖生态学

背景情况:

临灭绝的旋尾魔鬼 (Mobula mobular) 的繁殖生物学仍然不太清楚.
有限的数据存在于他们的交配行为,怀孕期和成熟率在野生和囚禁种群.

研究的目的:

在受控的水族馆环境中记录和描述尾魔鬼射线的繁殖行为.
为了估计Mobula mobular成熟时的年龄和尺寸.
详细介绍胚胎发育和新生儿形态.

主要方法:

在大阪水族馆KAIYUKAN观测了一对雄性和雌性脊尾魔鬼射线,在大阪水族馆KAIYUKAN一起居住了7.5年.
详细记录观察到的生殖行为,包括求爱,交配和分离.
根据男性的扣子延长和一般生长模式,估计年龄;测量圆盘宽度 (DW) 和体重.

主要成果:

观察到的生殖行为包括启动,耐力,逃避,交配前的定位,交配和分离.
交配的个体的圆盘宽度 (DW) 约为203-204厘米. 在第一次交配时,雄性估计年龄为7.7岁,雌性为8.9岁.
怀孕持续了464天,产生的新生儿体重11.32公斤,体重量为104厘米.

结论:

囚禁观察提供了与野生种群研究相一致的有价值数据,有助于理解Mobula mobular生殖生物学.
这项研究有助于填补这个研究不足的危物种的关键知识缺口.
基于水族馆的研究对于推动Mobula mobular的保护工作至关重要.

关键词:

水族馆水族馆的水族馆伴侣关系中的配合.送货送货送货送货送货送货魔鬼雷是什么意思魔鬼雷是什么意思它们是Mobulidae.

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