ISSN : 1225-3480
본 연구에서는 한국 연안의 생태학적 건강도를 조사하는 과정에서 이매패류 5종 (굴, 지중해담치, 바지락, 대복, 둥글레조개) 에서 발견된 이성생식세포 발현현상을 보고한다. 암컷에서 이성생식세포 발현 현상은 반대 성의 생식세포들이 난자형성소낭 내부와 소낭 사이에서 단독 또는 무리지어 나타나는 형태였다. 이성생식세포 발현 현상이 관찰된 정소에서 난모세포들은 대부분 난황형성전기 또는 난황형성개시기 단계였다. 이들은 단독으로 산재되어 있거나 또는 정자형성소낭의 내부와 소낭 사이에 무리지어 존재하고 있었다. 굴에서 이성생식세포 발현율은 약 10.4% (n = 19/183) 로 수컷 (9.7%, n = 13/134) 보다 암컷 (12.2%, n = 6/49) 에서 높게 나타났다. 지중해담치에서 이성생식세포 발현율은 약 31.7% (n = 19/60) 였으며, 수컷 (25.9%, n = 7/27) 보다 암컷 (36.4%, n = 12/33)에서 높게 나타났다. 바지락 이성생식세포 발현율은 11.2% (n = 11/98) 였는데, 암컷 (7.1%, n = 4/56) 보다 수컷 (16.7%, n = 7/42) 에서 높았다. 대복의 이성생식세포 발현율은 약 28% (n = 30/107) 로 암컷 (24.5%, n = 13/53) 보다 수컷 (31.5%, n = 17/54) 에서 높았다. 둥글레조개에서 이성생식세포 발현율은 약 18.4% (n = 7/38) 였는데, 수컷 (8.3%, n = 2/24) 에 비해 암컷 (35.7%, n = 5/14) 에서 높았다.
This research reports the intersexuality of bivalves, such as Crassostrea gigas, Mytilus galloprovincialis, Rupiditapes philippinarum, Gomphina veneriformis and Barnea davidi discovered during the process of investigating the ecological health status of coastal waters of Korea. In intersex ovaries, the opposite germ cells were observed either individually or in groups in the interfollicular space and inside the oogenic follicle. Oocytes in the intersex testis were at the previtellogenic or initial vitellogenic stage. They were either scattered individually or in groups in the interfollicular space and inside the spermatogenic follicle. The intersexuality in C. gigas was 10.4% (n = 19/183), while female (12.2%, n = 6/49) exhibited a higher proportion than male (9.7%, n = 13/134). The intersexuality in M. galloprovincialis was 31.7% (n = 19/60), while female (36.4%, n = 12/33) exhibited a higher proportion than male (25.9%, n = 7/27). The intersexuality in R. philippinarum was 11.2% (n = 11/98), while male (16.7%, n = 7/42) exhibited a higher proportion than female (7.1%, n = 4/56). The intersexuality in G. veneriformis was 28% (n=30/107), while male (31.5%, n=17/54) exhibited a higher proportion than female (24.5%, n=13/53). The intersexuality in B. davidi was 18.4% (n = 7/38), while female (35.7%, n =5 /14) exhibited a higher proportion than male (8.3%, n = 2/24).
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