Abstract
The physiochemical factors and seasonal variation in abundance of Sinocorophium homoceratum were examined at the intertidal flat in Gomso Bay, west coast of Korea, for one year. The salt tolerance of S. homoceratum was also investigated in the laboratory. S. homoceratum showed relatively high density in spring and summer, which were relatively high temperature (12 - 28°C) and low salinity (20.0 - 22.0 psu), and the lowest density in winter, which was low temperature (5°C or less) and high salinity (30-32 psu). Although immature individuals appeared throughout the year and juveniles did in all seasons except winter, ovigerous females were only collected from April to June. Relative growth of the head length and head width against the body length was best described by the primary regression equation. In experiments on salt tolerance in S. homoceratum, all individuals died after 24 hours at 0 psu. Six days after the start of the experiment, its survival rates (20.0 - 22.2%) at 28 - 35 psu were significantly lower than those (80.0 -82.3%) at 7 - 21 psu. The results of this study suggest that S. homoceratum is a species well adapted to estuarine mudflat by digging burrows in a silt mudflat and maintaining a relatively high density in all seasons except winter.
Published Version
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