Korean Journal of Fisheries and Aquatic Sciences (한국수산과학회지)

The Korean Society of Fisheries and Aquatic Science (한국수산과학회)
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Distribution and Seasonal Changes in Finless Porpoise Neophocaena asiaeorientalis Populations Near Gadeok Island, Korea

가덕도 상괭이(Neophocaena asiaeorientalis)의 분포 및 계절적 변화

  • Park, Kyum Joon (Cetacean Research Institute, National Institute of Fisheries Science) ;
  • Yoon, Young Geul (Cetacean Research Institute, National Institute of Fisheries Science) ;
  • Sin, Jeong-Ho (Cetacean Research Institute, National Institute of Fisheries Science) ;
  • Sohn, Hawsun (Cetacean Research Institute, National Institute of Fisheries Science) ;
  • Choi, Young-Min (Cetacean Research Institute, National Institute of Fisheries Science)
  • 박겸준 (국립수산과학원 동해수산연구소 고래연구센터) ;
  • 윤영글 (국립수산과학원 동해수산연구소 고래연구센터) ;
  • 신정호 (국립수산과학원 동해수산연구소 고래연구센터) ;
  • 손호선 (국립수산과학원 동해수산연구소 고래연구센터) ;
  • 최영민 (국립수산과학원 동해수산연구소 고래연구센터)
  • Received : 2017.08.16
  • Accepted : 2017.10.10
  • Published : 2017.10.31
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Abstract

Few studies on the finless porpoise Neophocaena asiaeorientalis have been conducted on the south coast of Korea. This region includes Gadeok Island, which is located off the Korean peninsula in an area of heavy maritime traffic. Sighting surveys of finless porpoises were conducted at seven predetermined spots around Gadeok Island in January, May, July, September, and November 2016. Finless porpoises (127 individuals in 24 schools) were sighted at all but one (spot P5) of the survey locations. Fewer porpoises were spotted in summer (Jul and Sep) than in other seasons (P<0.05). Porpoises were most abundant around the south coast of the island, where they were spotted in every season, and in significantly higher numbers than at other locations (P<0.05). Single individuals accounted for 20.8% of sightings, while 25.0% of sighted schools consisted of only two porpoises. The mean school size was 5.29 individuals (SD=6.72).

Keywords

References

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