Estimation of production of the copepod Calanus sinicus during spring in the northern East China Sea SCIE SCOPUS

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Title
Estimation of production of the copepod Calanus sinicus during spring in the northern East China Sea
Author(s)
Kang, Hyung Ku; Kim, Cheol-Ho
KIOST Author(s)
Kang, Hyung Ku(강형구)
Alternative Author(s)
강형구
Publication Year
2021-02
Abstract
We estimated the production of the copepod Calanus sinicus, including somatic production of copepodite stage 1 (Cl) to copepodite stage 5 (CV) and egg production of adult females, to elucidate the role of C. sinicus during spring in the northern East China Sea, including the southern waters of Korea. To estimate the somatic production of the copepodites, an empirical equation for broadcasters (Hirst & Bunker 2003) was used. The total biomass of the C. sinicus population, including CI to adult males and females, ranged from 0.11 to 30.23 mg C m(-3), with a mean of 8.69 mg C m(-3). The egg production rate (EPR) of adult females of C. sinicus, measured over 24 h of shipboard incubation, ranged from 0 to 14.9 eggs female day(-1) (mean 5.8 eggs female(-1) day(-1)), equivalent to mean 33.6 pg C m(-3) day(-1). The weight-specific EPR (WSEPR) of adult females averaged 0.023 day(-1), and significantly increased with increasing water temperature at 5 m depth and surface chlorophyll a concentration, respectively. WSEPR decreased with increasing body mass of individual adult females. The total production of the C. sinicus population ranged from 0.02 to 3.67 mg C m(-3) day(-1) (mean 0.91 mg C m(-3) day(-1)) and the depth-integrated mean total production was estimated to be 52.72 mg C m(-2) day(-1). CV production accounted for 54% of the total production. By contrast, EPR contributed on average only 3.7% of the total production rate. Our estimate of the production of C. sinicus can be applied for potential comparisons of region-specific copepod production.
ISSN
1880-8247
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/41346
DOI
10.3800/pbr.16.1
Bibliographic Citation
PLANKTON & BENTHOS RESEARCH, v.16, no.1, pp.1 - 10, 2021
Publisher
PLANKTON SOC JAPAN
Subject
MARINE PLANKTONIC COPEPODS; LIFE-HISTORY STRATEGIES; WEIGHT-SPECIFIC GROWTH; SOUTHERN YELLOW SEA; COLD BOTTOM WATER; SECONDARY PRODUCTION; EGG-PRODUCTION; SOUTHEASTERN COAST; ILKWANG BAY; BODY-SIZE
Keywords
Calanus sinicus; copepod; copepodites; egg production rate; somatic production
Type
Article
Language
English
Document Type
Article
Publisher
PLANKTON SOC JAPAN
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