Abstract
Seasonal variation of abundance and species composition of ichthyoplankton were studied in the coastal water off Tongyoung, Korea. Monthly samples were collected using a ring net which were towed horizontally at 4 different stations from March, 1998 to February, 1999. A total of 74 species representing 35 families and 8 orders were found. Of these species 40 species (17 families) were Perciformes. Of the fish larvae couected Engraulis japonicus, Repomucenus sp., Parablennius yatabei, Synechogobius hasta, and Tridentiger sp. were the dominant species representing in total number of individuals. The number of species was highest in August and lowest in December; number of individuals was highest in May and lowest in November. The diversity index (Shannon and Wiener Index) was highest in march, and lowest in December.
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