CHANGES IN PLASMA LEVELS OF STEROID HORMONES DURING SEXUAL MATURATION OF MALE HELICOPTER CATFISH (WALLAGO ATTU) IN CAPTIVITY
In order to provide reliable indicators of the spawning season of captive helicopter catfish (Wallago attu), this study evaluated the temporal variation in gonadosomatic index (GSI), plasma levels of testosterone (T), and 11-ketotestosterone (11-KT) in male broodstock in captivity. GSI was estimated...
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Trường Đại học Đà Lạt
2023
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| Truy cập trực tuyến: | https://tckh.dlu.edu.vn/index.php/tckhdhdl/article/view/1022 https://scholar.dlu.edu.vn/thuvienso/handle/DLU123456789/114496 |
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oai:scholar.dlu.edu.vn:DLU123456789-1144962023-10-27T14:47:42Z CHANGES IN PLASMA LEVELS OF STEROID HORMONES DURING SEXUAL MATURATION OF MALE HELICOPTER CATFISH (WALLAGO ATTU) IN CAPTIVITY Vo, Duc Nghia Le, Thi Thu An Chau, Ngoc Phi Nguyen, Van Huy In order to provide reliable indicators of the spawning season of captive helicopter catfish (Wallago attu), this study evaluated the temporal variation in gonadosomatic index (GSI), plasma levels of testosterone (T), and 11-ketotestosterone (11-KT) in male broodstock in captivity. GSI was estimated as the percentage of the relative weight of testis to total body weight. Plasma levels of sex steroids were determined by enzyme-linked immunosorbent assay (EIA). Testis samples were dehydrated and embedded in paraffin, then sectioned at 5 μm thickness. The highest level of T (402.1 ± 16.7 pg/mL) was found in June, followed by a peak in 11-KT level (76.9 ± 4.7 pg/mL) in May. Testes containing the highest concentrations of spermatozoa were observed from June to August. The GSI of males increased significantly from January to June and peaked in July (2.14%). Taken together, we conclude that the spawning season of captive helicopter catfish occurs from June to August. These results will contribute to the basic knowledge of the reproductive biology of helicopter catfish, which can be useful in artificial breeding. 2023-03-04T14:14:23Z 2023-03-04T14:14:23Z 2023 Article 0866-787X https://tckh.dlu.edu.vn/index.php/tckhdhdl/article/view/1022 https://scholar.dlu.edu.vn/thuvienso/handle/DLU123456789/114496 10.37569/DalatUniversity.13.2.1022(2023) en Tạp chí Khoa học Đại học Đà Lạt, Tập 13, Số 2; tr. 13-24 application/pdf Trường Đại học Đà Lạt |
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English |
| description |
In order to provide reliable indicators of the spawning season of captive helicopter catfish (Wallago attu), this study evaluated the temporal variation in gonadosomatic index (GSI), plasma levels of testosterone (T), and 11-ketotestosterone (11-KT) in male broodstock in captivity. GSI was estimated as the percentage of the relative weight of testis to total body weight. Plasma levels of sex steroids were determined by enzyme-linked immunosorbent assay (EIA). Testis samples were dehydrated and embedded in paraffin, then sectioned at 5 μm thickness. The highest level of T (402.1 ± 16.7 pg/mL) was found in June, followed by a peak in 11-KT level (76.9 ± 4.7 pg/mL) in May. Testes containing the highest concentrations of spermatozoa were observed from June to August. The GSI of males increased significantly from January to June and peaked in July (2.14%). Taken together, we conclude that the spawning season of captive helicopter catfish occurs from June to August. These results will contribute to the basic knowledge of the reproductive biology of helicopter catfish, which can be useful in artificial breeding. |
| format |
Article |
| author |
Vo, Duc Nghia Le, Thi Thu An Chau, Ngoc Phi Nguyen, Van Huy |
| spellingShingle |
Vo, Duc Nghia Le, Thi Thu An Chau, Ngoc Phi Nguyen, Van Huy CHANGES IN PLASMA LEVELS OF STEROID HORMONES DURING SEXUAL MATURATION OF MALE HELICOPTER CATFISH (WALLAGO ATTU) IN CAPTIVITY |
| author_facet |
Vo, Duc Nghia Le, Thi Thu An Chau, Ngoc Phi Nguyen, Van Huy |
| author_sort |
Vo, Duc Nghia |
| title |
CHANGES IN PLASMA LEVELS OF STEROID HORMONES DURING SEXUAL MATURATION OF MALE HELICOPTER CATFISH (WALLAGO ATTU) IN CAPTIVITY |
| title_short |
CHANGES IN PLASMA LEVELS OF STEROID HORMONES DURING SEXUAL MATURATION OF MALE HELICOPTER CATFISH (WALLAGO ATTU) IN CAPTIVITY |
| title_full |
CHANGES IN PLASMA LEVELS OF STEROID HORMONES DURING SEXUAL MATURATION OF MALE HELICOPTER CATFISH (WALLAGO ATTU) IN CAPTIVITY |
| title_fullStr |
CHANGES IN PLASMA LEVELS OF STEROID HORMONES DURING SEXUAL MATURATION OF MALE HELICOPTER CATFISH (WALLAGO ATTU) IN CAPTIVITY |
| title_full_unstemmed |
CHANGES IN PLASMA LEVELS OF STEROID HORMONES DURING SEXUAL MATURATION OF MALE HELICOPTER CATFISH (WALLAGO ATTU) IN CAPTIVITY |
| title_sort |
changes in plasma levels of steroid hormones during sexual maturation of male helicopter catfish (wallago attu) in captivity |
| publisher |
Trường Đại học Đà Lạt |
| publishDate |
2023 |
| url |
https://tckh.dlu.edu.vn/index.php/tckhdhdl/article/view/1022 https://scholar.dlu.edu.vn/thuvienso/handle/DLU123456789/114496 |
| _version_ |
1781718927768813568 |