Abstract
The distribution and abundance of sardine eggs in the Ria of Vigo (Galician coast, NW Spain) was studied monthly for three annual cycles. Sardine eggs were most abundant during the winter and spring months, although the spawning peaks varied from year to year. The greatest densities of eggs were found in November and March during the 1979–1980 cycle but no autumn peak was found in 1981,1982 or 1983. The number of eggs also varies greatly in different years. The greatest densities of eggs were always found in the outer area of the ria. The study of the vertical distribution of sardine eggs shows that they are concentrated above the thermocline.
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