Characteristics and Temporal Patterns of Testes and Ovaries Development in the Hybrid Snakehead of Channa argus (♂) × Channa maculate (♀)
Characteristics and Temporal Patterns of Testes and Ovaries Development in the Hybrid Snakehead of Channa argus (♂) × Channa maculate (♀)
Aiguo Zhou1, Shaolin Xie1, Yanfeng Chen2, Huijuan Tang1 and Jixing Zou1*
ABSTRACT
This study presents histological observations of hybrid snakehead ovaries and testes at different stages, as well as ultrastructural observations of sperm. The ovaries of hybrid snakehead exhibit a batch asynchronous type of development from stage III to stage VI, with oocytes in stages I, II, and III present. Histological sections of stage IV ovaries reveal the presence of oocytes in phases I, II, III, and IV, indicating a multiple egg laying per year pattern. Furthermore, the testis of hybrid snakehead exhibits a typical radiating type with seminiferous lobules arranged in a leaf-like manner from ventral to dorsal sides. Notably, male cells show significant asynchrony during development. The sperm structure consists of three parts: head, middle piece, and tail; characterized by an acrosome-type morphology. The flagella’s central axis displays a typical “9+2” microtubular structure. This study provides valuable insights for exploring reproductive performance enhancement through artificial sex regulation and improving breeding yield in hybrid snakehead.
To share on other social networks, click on any share button. What are these?
