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Sperm quality of spontaneously occurring gynogenetic males in the yellowtail tetra Astyanax altiparanae
Journal of Applied Ichthyology ( IF 0.9 ) Pub Date : 2021-07-18 , DOI: 10.1111/jai.14244
Talita Maria Lázaro 1 , Nathalia Raissa de Alcântara Rocha 1 , Paulo Sérgio Monzani 1 , Laura Satiko Okada Nakaghi 2 , José Augusto Senhorini 1 , George Shigueki Yasui 1 , Nivaldo Ferreira do Nascimento 1, 2, 3
Affiliation  

Gynogenesis is a chromosomal manipulation technique where an offspring is generated exclusively from maternal inheritance. In the yellowtail tetra (Astyanax altiparanae) almost all gynogenetic fish were females, suggesting a genetic sex determination system of XX/XY. However, due to environmental (e.g. temperature) or unknown genetic factors, the rise of males are described. Therefore, the aim of this study was to analyze the reproductive parameters of spontaneously gynogenetic males. The parameters analyzed were spermatozoon viability, motility and ploidy. Additionally, the gonads were processed for histology and the genetic inheritance confirmed by genotyping. Sperm parameters of gynogenetic males did not show differences when compared with semen of normal males. These data supports that gynogenetic males presents fertilization capacity and can be used for future studies of chromosome manipulation or possible production of monosex populations in Aaltiparanae.

中文翻译:

黄尾鰤鱼自发发生雌性生殖雄性的精子质量

Gynogenesis 是一种染色体操作技术,其中后代完全由母系遗传产生。在黄尾鰤 ( Astyanax altiparanae) 几乎所有的雌性生殖鱼都是雌性,表明 XX/XY 的遗传性别决定系统。然而,由于环境(例如温度)或未知的遗传因素,描述了雄性的崛起。因此,本研究的目的是分析自发雌性生殖雄性的生殖参数。分析的参数是精子活力、运动性和倍性。此外,对性腺进行组织学处理,并通过基因分型确认遗传遗传。与正常男性的精液相比,雌性生殖男性的精子参数没有显示出差异。这些数据支持雌性生殖雄性具有受精能力,可用于未来研究染色体操作或在A 中可能产生单性种群。 高山属.
更新日期:2021-07-18
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