남해 앵강만 잘피밭 어류의 월별 종조성 변화 = Seasonal Variation in Fish Species Composition in Seagrass Bed of Aenggang Bay in the South Sea of Korea

국문 초록 (Abstract)

경남 남해 앵강만 잘피밭에서 2013년 10월부터 2014년 9월까지 소형 지인망을 이용하여 월별 어류군집의 특징 및 종조성을 조사하였다. 조사 기간 동안 총 6목 22과 35종 3,174개체, 3,137 g이 채집되었다. 우점종은 살망둑이었으며, 다음으로 베도라치, 그물코쥐치, 날개망둑, 미역치 순으로 채집되었다. 앵강만 잘피밭을 이용하는 어류들은 시기를 달리하여 출현하였으며, 채집된 대부분의 어류는 크기가 작은 유어였다. 우점종의 출현 양상을 고려할 때 유어는 수심이 얕은 잘피밭을 성육장으로 이용하고 성장함에 따라 보다 깊은 수심의 잘피밭으로 서식지를 이동하는 것으로 생각된다. 앵강만 잘피밭에서는 남해안 잘피밭에서 수행된 선행연구들에서는 보고되지 않은 날매퉁이, 쑤기미, 꼬치고기 그리고 흰점꺼끌복이 채집되었다.

다국어 초록 (Multilingual Abstract)

Monthly variation in species composition was determined using fish samples collected by a beach seine between October 2013 and September 2014 in the eelgrass bed in Aenggang Bay, Namhae, Gyeongsangnamdo. A total of 3,174 individuals of 35 species, amounting to 3,137 g were collected. The dominant species was Gymnogobius heptacanthus, followed by Pholis nebulosa, Rudarius ercodes, Favonigobius gymnauchen and Hypodytes rubripinnis. Almost all fish collected were small in size or juveniles. Seasonal variation of species composition showed that the dominant species, used the shallow area of the eelgrass bed as a nursery ground and moved to a deeper water as they grew. Saurida elongata, Inimicus japonicus, Sphyraena pinguis, and Arothron hispidus, were first reported in an eelgrass bed in the southern coastal water.

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