FEEDING ECOLOGY OF COPEPODID STAGES OF EUCALANUS BUNGII IN THE CHUKCHI AND NORTHERN BERING SEAS IN OCTOBER 1988 (14th Symposium on Polar Biology)
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Fisheries Laboratory, Hiroshima University
Faculty of Applied Biological Science, Hiroshima University
National Institute of Polar Research
National Institute of Polar Research
Department of Marine Sciences and Technology, School of Engineering, Hokkaido Tokai University
Department of Biotechnology, Senshu University of Ishinomaki
Faculty of Applied Biological Science, Hiroshima University
抄録(英)
Gut contents of the third to sixth copepodid stages of Eucalanus bungii (except for the sixth copepodid stage of male) from the Chukchi and northern Bering Seas in October 1988 were investigated with a light and a scanning electron microscopes. According to LM analysis all the copepodid stages of E. bungii fed on diatoms, dinoflagellates, tintinnids, crustaceans, and mineral particles. SEM examinations of gut contents of the fourth and fifth copepodid stages revealed that they ingested fecal pellets and discarded houses of oikopleurid larvaceans in addition to phytoplankton cells, suggesting that E. bungii showed coprophagy and saprophagy. The presence of an oil drop in the prosome and the reduced, thread-like gut of E. bungii indicated that E. bungii in the Chukchi and northern Bering Seas in October may supposedly have been originated from non-feeding diapausing stocks in deep-waters or prediapausing stages in the southern seas.
雑誌書誌ID
AA10819561
雑誌名
Proceedings of the NIPR Symposium on Polar Biology
FEEDING ECOLOGY OF COPEPODID STAGES OF EUCALANUS BUNGII IN THE CHUKCHI AND NORTHERN BERING SEAS IN OCTOBER 1988 (14th Symposium on Polar Biology)
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KJ00001983673
(1.43MB)
概要
