Ocean and Polar Research

Korea Institute of Ocean Science & Technology (한국해양과학기술원)
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Mortality of Little Tern(Sterna albifrons) by Abandoned Fishing Nets during Parental Care Period

폐그물 방치에 의한 육추기의 쇠제비갈매기(Sterna albifrons) 사망

  • Kim, Jeong-Hoon (Department of Biology, Korea Institute of Ornithology Kyung Hee University) ;
  • Yoo, Jeong-Chil (Department of Biology, Korea Institute of Ornithology Kyung Hee University)
  • 김정훈 (경희대학교 생물학과, 한국조류연구소) ;
  • 유정칠 (경희대학교 생물학과, 한국조류연구소)
  • Published : 2007.03.31
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Abstract

Abandoned fishing nets served Little Tern(Sterna albifrons) chicks as cover on a sandy island on Ganwol Lake, Hongsung-gun, Chungcheongnam-do, Korea. Chicks were incidently caught in $2.5cm{\times}2.5cm$ mesh sized nets and died of dehydration and exhaustion. Three adults died when they were caught by abandoned fishing net during parental care period in $2.5cm{\times}2.5cm$ mesh sized nets. Whereas $0.7cm{\times}0.7cm$ mesh sized nets did not affect the chicks' or adults' survival. Overlapped nets with several layers were more dangerous for chicks than were spread nets with a single layer. Dead chicks and adults were found to have been entangled by wing and neck. In this study, wing and nape(head+bill) of dead chicks were longer than those of live chicks. To improve the survival rate of Little Tern chicks at Ganwol Lake, abandoned fishing nets must be removed before the breeding season.

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References

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