Larval Fish Composition, Distribution and Assemblages by Scientific Sounder from Eight Stations off Northeastern Taiwan

  • Author(s): Shinn-Pyng Yeh
  • DOI: 10.3319/TAO.1992.3.3.347(KEEP)
  • Keywords:
  • Citation: Yeh, S.-P., 1992: Larval Fish Composition, Distribution and Assemblages by Scientific Sounder from Eight Stations off Northeastern Taiwan. Terr. Atmos. Ocean. Sci., 3, 347-364, doi: 10.3319/TAO.1992.3.3.347(KEEP)
Abstract

With the help of SIMRAD EK-400 scientific sounder, a Maruchi-type larval net was used to sample fish larvae from 8 stations of which the water depth is 104 to 1210 m along shelf and slope off northeastern Taiwan, by R.V. Ocean Researcher 1, during 254 cruise, September, 1990. In all, 1992 fish larvae were collected which represented, at least, 54 families and 143 species from which 66 species could be named. The greatest contribution was the Engraulidae (33.6%), the Myctophidae (33.0%) and the Leiognathidae (4.8%). The most numerous identified species were Engraulis japonicus (33.5%), Benthosema pterotum (30.9%), Leiognathus nuchalis (4.6%). Higher abundance (noJ250 m^3) of E. japonicus and L. nuchalis were found in shelf areas, while B. pterotum were found in shelf and slope areas. From the nutrient (NO3) transect and NOAA-9 SST, higher larval diversity was near the edge of and away from the upwelling center. Using the Bray-Curtis dissimilarity values and the UPGMA algorithm, the most abundant 10 identified species from 8 stations were classified into three species and three station groups respectively. Interpretations of larval diversity and distribution in relation to hydrography were discussed.

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