Contribution of auto- and heterotrophic protozoa to the diet of copepods in the Ulleung Basin, East Sea/Japan Sea SCIE SCOPUS

Cited 30 time in WEB OF SCIENCE Cited 37 time in Scopus
Title
Contribution of auto- and heterotrophic protozoa to the diet of copepods in the Ulleung Basin, East Sea/Japan Sea
Author(s)
Yang, Eun Jin; Kang, Hyung-Ku; Yoo, Sinjae; Hyun, Jung-Ho
KIOST Author(s)
Kang, Hyung Ku(강형구)
Alternative Author(s)
양은진; 강형구; 유신재
Publication Year
2009-06
Abstract
We estimated the ingestion rates and prey selectivity of two calanoid copepods, Calanus sinicus and Neocalanus plumchrus, on auto- and heterotrophic protozoa in the Ulleung Basin in the East Sea/Japan Sea. Both copepod species preferentially ingested auto- and heterotrophic protozoa. The heterotrophic protozoa comprised between 42.9 and 86.7% of the total carbon ration ingested by the copepods, although they comprised on average 21.5% of the total available prey carbon. In particular, ciliates comprised the major dietary component for the copepods in the study area. The copepod consumption of ciliates was on average 38.2% of the total daily carbon ration of auto- and heterotrophic protozoa. Auto- and heterotrophic protozoa in the 20-50 mu m size were the fraction that was most actively consumed by copepods and they comprised on average 45.1% of the total carbon ration ingested. In all experiments, the copepods selected the ciliate and heterotrophic dinoflagellate (HDF) groups over the other protozoa. Our results indicate that the copepod feeding regime was influenced by the composition and size of the potential food and that, in this study area, feeding behavior of copepods may control the populations of ciliates and HDFs that are larger than 10 mu m in size. Thus, the selective feeding patterns and higher grazing pressure of copepods on heterotrophic protozoa, compared with autotrophic protozoa, indicate a trophic coupling between copepods and the microbial food web in the Ulleung Basin.
ISSN
0142-7873
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/4289
DOI
10.1093/plankt/fbp014
Bibliographic Citation
JOURNAL OF PLANKTON RESEARCH, v.31, no.6, pp.647 - 659, 2009
Publisher
OXFORD UNIV PRESS
Subject
MICROBIAL FOOD-WEB; CALANUS-FINMARCHICUS; TROPHIC INTERACTIONS; MARINE ECOSYSTEMS; OITHONA-SIMILIS; NORTH-ATLANTIC; EGG-PRODUCTION; SPRING BLOOMS; DIATOMS; CARBON
Type
Article
Language
English
Document Type
Article
Files in This Item:
There are no files associated with this item.

qrcode

Items in ScienceWatch@KIOST are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse