영산강 하구의 진주담치에 기생하는 Pseudomyicola spinosus(요각류)의 세대해석 = Analysis of the Generations of Pseudomyicola spinosus (Copepoda, Poecilostomatoida) from the Blue Mussel, Mytilus galloprovincialis in the Yongsan River Estuary

다국어 초록 (Multilingual Abstract)

We report on the seasonal fluctuation of a Poecilostomatoida copepod, Pseudomyicola spinosus associated with the blue mussel, Mytilus galloprovincialis in the Yongsan River estuary (34$^{\circ}$47N, 126$^{\circ}$27'E). P. spinosus has four generations a year, seasonally succeeding each other. The generation that occurs during summer has the highest number of individuals. From June to October with the exception f September, males dominated while female outnumbered from November to May with the exception of January. It is possible to find ovigerous females all year with the exception of February. The largest number of ovigerous females occurs a month earlier than copepodids do. The percentage of C1 to C3 is approximately 4% of the total number of copepodids, indicating that in situ infestation by copepodids mainly occurs in C4 stage.