Abstract
AME Aquatic Microbial Ecology Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsSpecials AME 17:99-103 (1999) - doi:10.3354/ame017099 Feeding by the small calanoid copepod Paracalanus sp. on heterotrophic dinoflagellates and ciliates Kentaro Suzuki1,*, Yasuo Nakamura2,**, Juro Hiromi1 1College of Bioresource Sciences, Nihon University, Kameino, Fujisawa, Kanagawa 252-0813, Japan 2National Institute for Environmental Studies, Tsukuba, Ibaraki 305-0053, Japan *Present address: Institute of General Science for Environment, Shin-Nippon Meteorological and Oceanographical Consultant, Riemon, Ohi-gawa, Shida, Shidzuoka 421-0212, Japan **Addressee for correspondence. E-mail: yasuo@nies.go.jp ABSTRACT: Feeding of the calanoid copepod Paracalanus sp. on natural populations of heterotrophic (h-) dinoflagellates and ciliates was examined during the summer in the Seto Inland Sea, Japan. Paracalanus sp. ingested h-dinoflagellates with clearance rates of 35 to 146 ml ind.-1 d-1, comparable to those for autotrophic (a-) dinoflagellates. Feeding rates of the copepod on h-dinoflagellates (0.35 to 0.93 μg C ind.-1 d-1) were close to, or in some cases exceeded, the basic metabolic demands (0.5 μg C ind.-1 d-1) of the copepod. Ciliates were also ingested by Paracalanus sp., but the corresponding clearance rates (23 to 60 ml ind.-1 d-1) were lower than those for h-dinoflagellates. These results, together with data on the abundance/biomass of Paracalanus sp. and h-dinoflagellates in the study area, indicate that the population of Paracalanus sp. can have a significant feeding impact on h-dinoflagellates. KEY WORDS: Copepod · Heterotrophic dinoflagellate · Ciliate · Predation · Paracalanus Full text in pdf format PreviousNextExport citation RSS - Facebook - Tweet - linkedIn Cited by Published in AME Vol. 17, No. 1. Publication date: April 30, 1999 Print ISSN: 0948-3055; Online ISSN: 1616-1564 Copyright © 1999 Inter-Research.
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