Direct examination of the dietary preference of the copepod Calanus helgolandicus using the colorimetric approach SCOPUS KCI

Title
Direct examination of the dietary preference of the copepod Calanus helgolandicus using the colorimetric approach
Author(s)
Kang, H.-K.; Poulet, S.; Ju, S.-J.
KIOST Author(s)
Kang, Hyung Ku(강형구)
Publication Year
2007
Abstract
The food selectivity of tethered females of the copepod Calanus helgolandicus was examined by using the colorimetric approach. First, feeding behavior of the copepod did not show any differences between the red-color stained with neutral red and non-stained diets using the diatom Coscinodiscus curvatulus. Then, the copepods were fed a mixtures of two diets, the diatom C. curvatulus, stained with neutral red, and the dinoflagellate Gymnodinium sanguineum for 14~60 minutes of feeding duration. The foregut colors of females were examined using a stereo-microscope and a video monitor. The foreguts of animals fed with a high density of diatoms in mixed diets showed a dark red color, whereas those fed with a high density of dinoflagellate in mixed diets were a dark yellow. The results suggest that this species of copepod may not selectively feed either one of the diets used for this study. Their feeding activity may be more likely related to the density of available prey in their environment. Therefore, this quick and easy colorimetric approach could provide very useful information, like the pre-screening procedure before designing and conducting the time-consuming and complex feeding experiments to understand the feeding ecology of copepods. © Korea Ocean Research and Development Institute(KORDI) and the Korean Society of Oceanography(KSO) 2007.
ISSN
1738-5261
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/4751
DOI
10.1007/BF03020923
Bibliographic Citation
Ocean Science Journal, v.42, no.3, pp.193 - 197, 2007
Subject
Animalia; Bacillariophyta; Calanus helgolandicus; Copepoda; Coscinodiscus; Dinophyceae; Gymnodinium sanguineum
Keywords
Calanus helgolandicus; Diatom; Food selectivity; Foregut color; Neutral red dye
Type
Article
Language
English
Document Type
Note
Related Researcher
Research Interests

Zooplankton ecology,Zooplankton production,Zooplankton physiology,동물플랑크톤 생태,동물플랑크톤 생산력,동물플랑크톤 생리

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