在alfonsinos (Beryx spp.) 中出现了顺序性双性恋的证据. 从深处的东北大西洋来自
Mariana Cruz1,2, Wendell Medeiros-Leal1, Ualerson Peixoto1
1University of the Azores, Institute of Marine Sciences - OKEANOS, Horta, Portugal.
Journal of fish biology
|December 17, 2025
概括
研究人员在Beryx splendens和B. decadactylus鱼类中发现了形性,挑战了以前关于形性的假设. 这一发现对于了解鱼群和有效的渔业管理至关重要.
科学领域:
- 海洋生物学 海洋生物学
- 鱼类学 鱼类学 鱼类学
- 生殖生物学 生殖生物学
背景情况:
- 贝瑞克斯 (Beryx splendens) 和贝瑞克斯 (Beryx decadactylus) 以前被认为是严格的阴道性 (仅有一种类型的阴道).
- 了解鱼类的繁殖策略对于准确的库存评估和渔业管理至关重要.
研究的目的:
- 在阿佐尔群岛研究Beryx splendens和B. decadactylus的繁殖生物学.
- 确定这些物种中异性恋的流行率和特征.
主要方法:
- 收集和检查了572个Beryx splendens和B. decadactylus的标本.
- 识别和分析雌雄性个体,注意大小,生殖腺发育和季节性发生.
主要成果:
- 确定了66只雌性异性恋雌性,主要是中等大小的,处于生殖腺发育早期阶段.
- 在冬季的B. splendens,在春夏的B. decadactylus中,发生更频繁的雌雄性行为.
- 这些发现与这些物种中严格的声学假设相矛盾.
结论:
- 这项研究揭示了Beryx splendens和B. decadactylus中以前未知的生殖可塑性.
- 雌性繁殖的存在对库存评估和管理有重大影响,特别是考虑到大型繁殖个体的稀少性.
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