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Changes in plasma and ovarian steroid hormone level in wild female blue tang fish paracanthurus hepatus during a reproductive cycle
Animals Số 11, năm 2019 (Tập 9, trang -)
DOI: 10.3390/ani9110889
Tài liệu thuộc danh mục: Scopus
Animals
English
Từ khóa: 17,20beta dihydroxypregn 4 en 3 one; 17alpha estradiol; estradiol; steroid hormone; testosterone; animal experiment; Article; blood sampling; blue tang; data analysis; enzyme linked immunosorbent assay; estradiol blood level; fish; hormone blood level; hormone determination; information processing; nonhuman; ovary cycle; ovary development; Paracanthurus hepatus
Tóm tắt tiếng anh
This study aimed to document the seasonal cycle of steroid levels in the plasma and ovary, including testosterone (T), estradiol-17β (E2) and 17α, 20β-dihydroxy-4-pregnen-3-one (DHP) in relation to ovarian development in wild populations of female blue tang fish. The gonadosomatic index (GSI%) maintained high values from April to July and increased from the II to IV ovarian stages and dropped in the V stage. Levels of plasma, ovary T and E2 and DHP were high from March to July. Plasma T and E2 levels were low in the II stage when most oocytes were previtellogenic, reaching a peak during spawning, and decreased in the V stages when fish were going to late spawning and termination. DHP was detected in all stages of the ovary with a higher level in spawning fish but decreased after spawning. These results revealed that T, E2 and DHP could be involved in ovarian development and DHP may play a significant role as a maturational inducing hormone in blue tang fish. © 2019 by the authors. Licensee MDPI, Basel, Switzerland.
