Korean Journal of Fisheries and Aquatic Sciences (한국수산과학회지)

The Korean Society of Fisheries and Aquatic Science (한국수산과학회)
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Feeding Habits of Todarodes pacificus (Cephalopods: Ommastrephidae) in the Coastal Waters of Busan, Korea

부산 주변 해역에서 채집된 살오징어(Todarodes pacificus)의 식성

  • Song, Hye-Jin (Department of Marine Biology, Pukyong National University) ;
  • Baeck, Gun-Wook (Department of Oceanography, Pukyong National University) ;
  • Kim, Su-Am (Department of Marine Biology, Pukyong National University) ;
  • Huh, Sung-Hoi (Department of Oceanography, Pukyong National University)
  • Published : 2006.02.01
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Abstract

Analysis of stomach content for common squid was carried out to investigate the difference in seasonal and ontogenetic feeding behavior. Totals of 1368 common squid were collected monthly off Busan from September 2004 to August, 2005. Size range of common squid was 8.5-31.8 cm mantle length (ML) during the study period. Of the 1368 stomachs examined, 599 specimens (43.8%) were empty. Stomach contents indicated that common squid was carnivore: Large portion of stomach contents consisted of fish and mollusca (mainly common squid). The stomach contents index (SCI) seemed to increase with size, though there was no statistical difference between size classes significantly. Cannibalism was minimum in size range of 15-20 cm ML, but was steadily increased with size. Cephalopods were the major prey during spring and summer when common squid were small, but fish replaced it during autumn and winter when they became large.

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References

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