Notes on the reproductive biology of the Brazilian electric ray Narcine brasiliensis (Elasmobranchii: Narcinidae)
| Autor: | Matheus Marcos Rotundo, Fernanda A. Rolim, Teodoro Vaske-Júnior |
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| Rok vydání: | 2015 |
| Předmět: |
0106 biological sciences
Narcine biology 010604 marine biology & hydrobiology media_common.quotation_subject Zoology Aquatic Science biology.organism_classification 010603 evolutionary biology 01 natural sciences Elasmobranchii parasitic diseases Reproductive biology Batoidea Sexual maturity Reproduction Mating Ecology Evolution Behavior and Systematics Brazilian electric ray media_common |
| Zdroj: | Journal of Fish Biology. 89:1105-1111 |
| ISSN: | 0022-1112 |
| DOI: | 10.1111/jfb.12778 |
| Popis: | This study provides information on the reproductive biology of Narcine brasiliensis based on 105 individuals (72 females and 33 males) sampled in Sao Paulo State, Brazil. The total length at maturity for females was 318·9 mm and for males was 279·8 mm; pregnant females were observed only during summer and autumn. The peak of the gonado-somatic index for females and condition factor for males in the spring suggest a preparation for pregnancy and a mating period during this season. The capture of immature individuals indicates a need for management of the species in this region. |
| Databáze: | OpenAIRE |
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