17α-Methyltestosterone implants accelerate spermatogenesis in common snook, Centropomus undecimalis, during first sexual maturation
| Autor: | Virginia Naide, Cristina Vaz Avelar de Carvalho, Fabio Carneiro Sterzelecki, Gabriel Passini, Vinicius Ronzani Cerqueira, Manecas Francisco Baloi |
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| Rok vydání: | 2018 |
| Předmět: |
Male
0301 basic medicine medicine.medical_specialty Common snook 03 medical and health sciences Food Animals Methyltestosterone Internal medicine Testis medicine Animals Sexual maturity Testosterone Spermatogenesis Small Animals Drug Implants Dose-Response Relationship Drug Estradiol biology Equine Centropomus Fishes biology.organism_classification Sperm Gonadosomatic Index 030104 developmental biology Endocrinology Androgens Animal Science and Zoology medicine.drug |
| Zdroj: | Theriogenology. 106:134-140 |
| ISSN: | 0093-691X |
| DOI: | 10.1016/j.theriogenology.2017.10.015 |
| Popis: | The common snook, Centropomus undecimalis, is an emerging species for intensive fish culture, however, some reproductive aspects of this species, especially the development of the testes and the action of androgen hormones on spermatogenesis have not been studied. The objective of this study was to evaluate the effects of 17α-methyltestosterone (MT) on spermatogenesis and steroidogenesis during the first sexual maturation of the common snook. The fish, which were reproduced in captivity, had a body weight of 305.80 ± 35.60 g and a total length of 34,11 ± 1,08 cm. We used ethylene-vinyl-acetate (EVAc) implants with four concentrations of the hormone MT: T1 (0.3 mg/kg); T2 (3.0 mg/kg); T3 (15.0 mg/kg) and T4 (30.0 mg/kg), and a control group that did not receive the hormone. The gonads increased (P |
| Databáze: | OpenAIRE |
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