ON THE VARIATION IN THE NUMBER OP VERTEBRAE OF ANCHOVY, ENGRAULIS JAPONICUS TEMMINCK ET SCHLEGEL, FROM THE SOUTH COAST OF KOREA

한국남해안산 멸치의 척추골수의 변이

Some considerations were made concerning the variation in the number of vertebrae (except urostyle) of anchovies sampled from the south coast of Korea, mainly off the city of Chungmu. The some seasonal difference was evinced in the mean value of vertebrae of small sized fish only, and no other significant differences were observed such as for locality or fishing gears. It was concluded that the anchovies from the south coast of Korea might be devided into spring and summer hatching populations and that the seasonal variation in the number of vertebrae might be caused by the difference of water temperature during the spawning season.

1. 한국남해안산 특히 진해도부근의 래유 멸치군의 척추골수의 변이를 검토하였다. 2. 척추골수의 변이는 지역적 또는 어구별의 변리는 인정되지 않고 계절적 변리로 인정된다. 3. 척추골수의 변이는 주로 산난기의 수온으로 생긴다고 인정된다. 4. 남해안산 멸치는 주로 춘계산란군에 의존함을 알았다. 5. 동서해안산 멸치도 동일계군 인가를 확인해야 되겠다.