한국수산과학회지 (Korean Journal of Fisheries and Aquatic Sciences)
- 제31권4호
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- Pages.500-507
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- 1998
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- 0374-8111(pISSN)
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- 2287-8815(eISSN)
저서성 단각류 Pontogeneia rostrata의 종내 대상분포와 주야-조석주기
Intraspecific Zonation of the Benthic Amphipod Pontogeneia rostrata in Relation to Diel and Tidal Cycles
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YU Ok Hwan
(Department of Oceanography, Chonnam National University) ;
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SUH Hae-Lip
(Department of Oceanography, Chonnam National University) ;
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SOH Ho Youn
(Department of Oceanography, Chonnam National University)
- 발행 : 1998.07.01
초록
돌산도 모래해안 쇄파대에서 1993년 1월 소조와 대조때 1조석주기 동안 채집한 저서성 단각류 시료를 가지고. 주야와 조석주기에 따른 Pontogeneia rostrata의 종내 대상분포를 조사했다. p. rostrata의 밀도는 대조보다는 소조때 높았다. 개체군을 성체 암
Using a sledge net, the benthic amphipods were taken over one cycle of the neap and spring tides in January 1993 at the sandy shore surf zone of Dolsando, southern Korea. From these samples, we investigated the diel and tidal effects on the intraspecific zonation of Pontogeneia rostrata. The density of p. rostrata was higher during neap tide than spring. Of three categories (adult males and females and juveniles), juveniles and males attained to its highest density during neap and spring tides, respectively. Length- frequency data show that the high mortality of juveniles seemed to occur in winter. In the surface at night, it is significant that juveniles were significantly more abundant during neap tide than spring, whereas both adult males and females were more abundant during spring tide than neap. This suggests that the vortical migration patterns of juveniles and adults vary with the type of tides. During flood of spring tide, more than