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Douglas C Selle¹, Raquel S Dos Santos¹, Thaiza R de Freitas¹

¹AQUAM Research Group, Animal Science Research Program, Federal University of Rio Grande do Sul, Av. Bento Gonçalves, 7712, Porto Alegre, RS 91540-000, Brazil.

Reproductive biology

|December 21, 2025

概括

在巴西研究了Loricariichthys anus (violinha) 的生殖生物学. 结果显示,雄性有特定的生殖期和低的精液量,这影响了保护和养殖策略.

科学领域:

鱼类学鱼类学鱼类学
水生生态学水生生态学
渔业科学渔业科学

背景情况:

鱼 (Loricariichthys anus),通常被称为violinha,是一种在巴西瓜伊巴河 (Guaíba River) 发现的淡水鱼类.
了解其繁殖生物学对于有效的保护和水产养殖协议的开发至关重要.

研究的目的:

为了描述Loricariichthys anus的生殖生物学特征.
提供支持保护倡议的数据.
为了告知这种物种的养殖策略.

主要方法:

从2021年11月到2022年10月,每月收集144个Loricariichthys门标本.
对性二态,淋巴体指数 (GSI),淋巴体组织学和精子参数 (运动性,度,形态) 的分析.

主要成果:

观察到的性二态,在繁殖季节 (11月至3月) 中,雄性表现出延长的下唇.
在11月至3月期间,男性和女性的性腺体指数达到峰值.
雌性在11月至2月之间成熟,显示出多次产卵事件的证据;雄性全年生产精子,精子体积低,运动性可变.

结论:

Loricariichthys anus的繁殖期是从11月到2月.
男性的精子体积低和精子度低,对囚禁繁殖构成挑战.
这些发现对Loricariichthys anus种群的保护和可持续管理具有重大意义.

关键词:

阴道组织学阴道组织学生殖期是一个繁殖期.精子中的精子度.精子运动学精子运动学精子形态学精子形态学

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