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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Dalat University
2022-10-01
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| Series: | Tạp chí Khoa học Đại học Đà Lạt |
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| Online Access: | https://tckh.dlu.edu.vn/index.php/tckhdhdl/article/view/1022 |
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| author | Duc Nghia Vo Thi Thu An Le Ngoc Phi Chau Van Huy Nguyen |
| author_facet | Duc Nghia Vo Thi Thu An Le Ngoc Phi Chau Van Huy Nguyen |
| author_sort | Duc Nghia Vo |
| collection | DOAJ |
| 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 |
| id | doaj-art-e4a3aecdd99045f790762950dae2d4b5 |
| institution | Kabale University |
| issn | 0866-787X |
| language | English |
| publishDate | 2022-10-01 |
| publisher | Dalat University |
| record_format | Article |
| series | Tạp chí Khoa học Đại học Đà Lạt |
| spelling | doaj-art-e4a3aecdd99045f790762950dae2d4b52025-02-02T05:35:56ZengDalat UniversityTạp chí Khoa học Đại học Đà Lạt0866-787X2022-10-01132410.37569/DalatUniversity.13.2.1022(2023)1077CHANGES IN PLASMA LEVELS OF STEROID HORMONES DURING SEXUAL MATURATION OF MALE HELICOPTER CATFISH (WALLAGO ATTU) IN CAPTIVITYDuc Nghia Vo0Thi Thu An Le1Ngoc Phi Chau2Van Huy Nguyen3University of Agriculture and Forestry, Hue UniversityUniversity of Agriculture and Forestry, Hue UniversityAgriculture Extension CenterUniversity of Agriculture and Forestry, Hue UniversityIn 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.https://tckh.dlu.edu.vn/index.php/tckhdhdl/article/view/102211-ketotestosteronereproductive cycletestistestosteronewallago attu. |
| spellingShingle | Duc Nghia Vo Thi Thu An Le Ngoc Phi Chau Van Huy Nguyen CHANGES IN PLASMA LEVELS OF STEROID HORMONES DURING SEXUAL MATURATION OF MALE HELICOPTER CATFISH (WALLAGO ATTU) IN CAPTIVITY Tạp chí Khoa học Đại học Đà Lạt 11-ketotestosterone reproductive cycle testis testosterone wallago attu. |
| title | 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_short | 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 |
| topic | 11-ketotestosterone reproductive cycle testis testosterone wallago attu. |
| url | https://tckh.dlu.edu.vn/index.php/tckhdhdl/article/view/1022 |
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