Gonadal development and sex steroids in Caranx crysos (Perciformes: Carangidae) in the Colombian Caribbean: foundations for sustainable aquaculture reproduction
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| Авторы: | , , , |
|---|---|
| Формат: | artículo original |
| Статус: | Versión publicada |
| Дата публикации: | 2026 |
| Описание: | Introduction: Caranx crysos holds significant importance as a source of income for local communities in the Colombian Caribbean region. There is a scarcity of information regarding this species, particularly concerning its reproductive biology. Objectives: To evaluate reproductive indicators related to gonadal development, thereby establishing a reference point for both management and the regulation of reproduction in controlled systems, as well as for aquaculture purposes. Methods: To achieve this, fish were collected monthly, in Taganga Bay (Colombia), over a year with the assistance of local artisanal fishermen. Biometric data were recorded, and fluctuations in plasma estradiol and testosterone levels were analyzed in relation to changes in the gonadosomatic index (GSI). Results: The highest GSI values in females were recorded from May to July, while males showed a significant increase in GSI between June and July. In females, plasma levels of 17β-estradiol peaked in May and June before declining in July (p < 0.05). Testosterone levels in males were elevated from May to July, remaining lower yet stable from August to March. Oocyte development was asynchronous, with mature oocytes observed from February to July, while mature males were present from July to September. Conclusions: These results suggest that the reproductive season of C. crysos (the blue runner) spans from late spring to early autumn, the optimal period to start artificial reproduction assessments. |
| Страна: | Portal de Revistas UCR |
| Институт: | Universidad de Costa Rica |
| Repositorio: | Portal de Revistas UCR |
| Язык: | Inglés |
| OAI Identifier: | oai:portal.revistas.ucr.ac.cr:article/197 |
| Online-ссылка: | https://revistas.ucr.ac.cr/index.php/rrbt/article/view/197 |
| Ключевое слово: | aquaculture; Caranx crysos; gonadal development; reproduction; sex steroids acuicultura; desarrollo gonadal; reproducción; esteroides sexuales |