亚马逊带状鱼Heros severus幼虫的本体和没有回归点
Hugo Leandro Dos Santos1, Higo A Abe2, Katia M F Freire3
1Universidade Estadual Paulista (UNESP), Centro de Aquicultura da UNESP, Programa de Pós-Graduação em Aquicultura, Via de Acesso Professor Paulo Donato Castelane Castellane, s/n, Vila Industrial, 14884-900 Jaboticabal, SP, Brazil.
Anais da Academia Brasileira de Ciencias
|February 26, 2025
概括
在Heros severus幼虫中,延迟第一次食会影响生长和生存,在6-8天之间观察到一个临界无返点 (PNR). 早期食对于这种装饰鱼的最佳发育至关重要.
科学领域:
- 水产养殖是水产养殖的一种方式.
- 鱼类学 鱼类学 鱼类学
- 发展生物学 发展生物学
背景情况:
- 装饰鱼水产养殖需要了解特定物种的发展阶段.
- 鱼 (Severum cichlid) 是一种受欢迎的装饰鱼,对其早期生命阶段的数据有限.
研究的目的:
- 详细介绍Heros severus的胚胎和幼虫的发展情况.
- 为了确定延迟初始养对幼虫发育和生存的影响.
- 为了确定Heros severus幼虫的无回归点 (PNR).
主要方法:
- 观察从受精到化28°C的胚胎发育情况.
- 幼虫养与延迟的第一次养治疗 (化后1-10天) 和对照.
- 测量幼虫的长度,体重和生存率.
主要成果:
- 化发生在受精后53小时;嘴巴在125小时后打开.
- 延迟第一次养显著减少了幼虫的体重和长度.
- 一天的食物剥夺并没有对发展产生负面影响.
- 没有返回点 (PNR50和PNR100) 估计分别为6天和8天.
结论:
- 早期食对于Heros severus幼虫的生长和生存至关重要.
- 监禁育种方案应包括及时的第一次养,以最大限度地提高成功率.
- 了解PNR对于优化水产养殖中的养策略至关重要.
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