한국수산과학회지 (Korean Journal of Fisheries and Aquatic Sciences)

  • 제57권5호
  • /
  • Pages.602-606
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  • 2024
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  • 0374-8111(pISSN)
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  • 2287-8815(eISSN)
한국수산과학회 (The Korean Society of Fisheries and Aquatic Science)
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백령도 점박이물범(Phoca largha)의 개체수 변동에 관한 연구

Seasonal and Annual Variations in the Occurrence of the Spotted Seal Phoca largha, on Baengnyeongdo Island

  • 어남규 (국립수산과학원 고래연구소) ;
  • 김소라 (국립수산과학원 고래연구소) ;
  • 박겸준 (국립수산과학원 고래연구소) ;
  • 이상헌 (부산대학교 해양학과) ;
  • 김현우 (국립수산과학원 연근해자원과)
  • Namgyu Uh (Cetacean Research Institute, National Institute of Fisheries Science) ;
  • So Ra Kim (Cetacean Research Institute, National Institute of Fisheries Science) ;
  • Kyum Joon Park (Cetacean Research Institute, National Institute of Fisheries Science) ;
  • Sang-Heon Lee (Department of Oceanography, Pusan National University) ;
  • Hyun Woo Kim (Coastal Water Fisheries Resources Research Division, National Institute of Fisheries Science)
  • 투고 : 2024.09.11
  • 심사 : 2024.10.07
  • 발행 : 2024.10.31
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초록

The spotted seal Phoca largha a primary marine mammal found along the Korean coast, exhibits a seasonal migration pattern between breeding and feeding areas. In this study, population fluctuations of spotted seals were analyzed around Baengnyeongdo Island, Korea, from 2016 to 2021. Field surveys were conducted at two major haulout sites, Mulbeom rocks and Yeonbong rocks, during low tide between April and November of each year. The results indicate that the highest number of spotted seals was observed in summer, particularly in August or September. Mulbeom rocks consistently accommodated more spotted seals than Yeonbong rocks, suggesting that it is a more suitable haulout site for the spotted seals. The recorded population was approximately 200 spotted seals, showing a slight decrease when compared with previous surveys conducted in 2000-2002 and 2006-2008. This decline could be attributed to overhunting and habitat degradation. Fluctuations in the number of spotted seals could also be influenced by short-term factors such as weather conditions. Further research incorporating drone surveys and photo-identification will improve our understanding of population dynamics and support conservation measures for spotted seals in this region.

키워드

과제정보

본 연구는 국립수산과학원 2024년도 수산시험연구사업 중 고래류 평가 및 관리 연구(R2024004)의 지원을 받아 수행되었습니다. 조사에 참여한 모든 연구원께 감사합니다.

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