期刊
JOURNAL OF FISH DISEASES
卷 44, 期 9, 页码 1271-1291出版社
WILEY
DOI: 10.1111/jfd.13469
关键词
oogenesis; ovary; oocytes; atretic follicles; teleosts
Atresia of ovarian follicles, a normal component of fish oogenesis, can reduce fish fecundity and lead to reproductive failure when occurring above physiological rates, impacting fisheries and aquaculture.
Atresia of ovarian follicles, that is the degenerative process of germ cells and their associated somatic cells, is a complex process involving apoptosis, autophagy and heterophagy. Follicular atresia is a normal component of fish oogenesis and it is observed throughout the ovarian cycle, although it is more frequent in regressing ovaries during the postspawning period. An increased occurrence of follicular atresia above physiological rates reduces fish fecundity and even causes reproductive failure in both wild and captive-reared fish stocks, and hence, this phenomenon has a wide range of implications in applied sciences such as fisheries and aquaculture. The present article reviews the available literature on both basic and applied traits of oocyte loss by atresia, including its morpho-physiological aspects and factors that cause a supraphysiological increase of follicular atresia. Finally, the review presents the use of early follicular atresia identification in the selection process of induced spawning in aquaculture and the implications of follicular atresia in fisheries management.
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