Reproduction of the duck catfishAgeneiosus ucayalensisin a ria river system
| Autor: | Rossineide Martins da Rocha, Luciano Fogaça de Assis Montag, Valéria de Albuquerque Oliveira, M. A. P. Ferreira |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
Wet season Gonad Ageneiosus ucayalensis 010604 marine biology & hydrobiology media_common.quotation_subject 010607 zoology Zoology Aquatic Science Biology 01 natural sciences Fishery medicine.anatomical_structure medicine Seasonal breeder Sexual maturity Reproduction Ecology Evolution Behavior and Systematics Sex ratio Catfish media_common |
| Zdroj: | Journal of Fish Biology. 90:1062-1069 |
| ISSN: | 0022-1112 |
| DOI: | 10.1111/jfb.13209 |
| Popis: | A total of 1006 duck catfish Ageneiosus ucayalensis were collected from a ria river system of eastern Amazonia, of which 733 were females and 273 males, a sex ratio 2·69:1. Condition factors of males were higher than those of females and size at first sexual maturity (L50 ) was 12·8 cm for females and 11·8 cm for males. The relative frequency of mature specimens and gonad condition indices indicate that the breeding season is short and coincides with the rainy season. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text