Reproducción de la raya eléctrica Narcine bancroftii (Torpediniformes: Narcinidae) en Santa Marta, Caribe colombiano
2020
This paper provides information about reproductive aspects of the electric ray Narcine
bancroftii, caught as bycatch with beach seines in two beaches of El Rodadero, Santa Marta, Colombian
Caribbean, between August (2005) and October (2006). The electric rays obtained were separate by sex,
weighed and measured; the development of reproductive stage was identified by external and internal
characteristics. The reproductive condition was determinate by (gonadosomatic GSI and hepatosomatic HSI)
indexes and the size at sexual maturity (l50%). The results showed that the GSI has one peak at year between
September and December when probably the copulation carried out, the HSI presented its highest value in
January, which corresponds to the end of the reproductive period. The size at sexual maturity was 32.2 cm in
females and it was between 20.2 and 22.9 cm in males. We propose that the gestation period extends during
four months, starting with the birth of individuals in February and finishing in April.
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