earticle

영어

To study the species composition of fish and distribution of ichthyoplanktons the coastal waters of Dodu-dong, Jeju was investigated for a total of four times underwater at spring (May) and autumn (November) 2008. Fish specimens were collected with a small net by SCUBA diving and fish specimens difficult to collect were photographed underwater using a underwater camera and a camcorder. A total of 43 species, 19 families, 3 orders were collected, and the dominant fish species were Chromis notata and Halichoeres tenuispinnis. The collected fish eggs and larvae were identified as belonging 4 species. The most dominant species Engraulis japonicus and Parabelnnius yatabei. The number of fish species was higher in autumn (November) than in spring (May), whereas the numbers of fish eggs were higher in spring (May). During the survey period, there were observed subtropical fish such as Chaetodontoplus septentrionalis, Microcanthus strigatus, Pomacentrus coelestis, Choerodon azurio, Labroides dimidiatus, Pseudolabrus eoethinus, Stethojulis interrupta terina, Siganus fuscescens and Ostracion immaculatus. The impacts of climate change, such as increasing water temperature have the potential to change geographical fish distribution. Further studies are need to consistently monitoring on the appearance of new subtropical fish correlated with climate change.