El Niño 1992-93: Its influence on the reproductive biology of Tagelus dombeii
DOI:
https://doi.org/10.15381/rpb.v5i1.8319Keywords:
Reproducción, Tagelus dombeii, razor shellAbstract
The El Niño 1992-93 phenomena incremented the number of matures males and females, and induced the spawning of Tagelus dombeii, due to the rise of the sea water temperature. The sex proportion was 1.2:1.0, (female:male). In the accelerated gametogenesis, we differentiated : oogonias and oocytes (previtelogenesis), ovocytes I (primary vitelogenesis) and ovocytes II (secondary vitelogenesis). The maturity scale, with high percentage of matures specimens and in spawning, and scarce immaturity and in development, were classificated in : non differentiated, immaturity, mature and spawn.Downloads
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Copyright (c) 1998 Víctor Ishiyama, Betty Shiga
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