Abstract
Distribution and abundance of sardine eggs in the Ilha Grande region, Rio de Janeiro, Brazil, were studied during five cruises for the 1969 1970 period. Using the shipboard fertilized eggs and the planktonic eggs, morphological descriptions of Brazilian sardine eggs are given. Spawning occurs during the summer from September to March in the coastal water off Ilha Grande to Ilha de São Sebastião down to a depth of 100 meters. Spawning may take place a few hours prior to midnight. lt was noticed that spawning has a close relationship to an area of cold water up welling. Spawning groups are isolated and spawning is small in scale in this region. Temperature and salinity in the spawning area range between 18-24ºC and 35.1-35.9‰ respectively.
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