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Grazing rates of freshwater copepod Thermocyclops decipiens (Kiefer, 1929) on Chlorella vulgaris under different light intensities
Radhakrishnan, Divya Kandathil1; AkbarAli, Isamma1; Sathrajith, Arunjith Thundiparambil2; Schmidt, Bjorn, V3; Sivanpillai, Sureshkumar1; Vasunambesan, Sankar Thazhakot1
Corresponding AuthorRadhakrishnan, Divya Kandathil(divyaravi27@gmail.com)
2020-08-30
Source PublicationAQUACULTURE
ISSN0044-8486
Volume525Pages:7
AbstractLight is one of the most important structuring factors for life in aquactic biology. For zooplankton grazers, including copepods, light offers a behavioral dilemma that is potentially present at both small and large scales. We investigated the grazing rate, clearance rate, fecal pellet production rate, egg production rate, percertage of egg hatching and survival percentage of the freshwater copepod Thermocyclops deceipiens under different light intensities (0 lx, 500 lx, 1500 lx) over periods of 15 days. For the grazing experiment the fresh water microalgae Chlorella vulgaris was used at concentrations 2-6 x 10(6) cells/mL(-1). The grazing rates of the copepod decreased at higher light intensities when compared to other treatments. Maximum grazing rate and the clearance rate occurred in the treatment with 500 lx (70,490 cells copepod(-1) h(-1), 0.23 mL copepod(-1) h(-1)). Egg production rate and hatching rate percentage (17.4 eggs female(-1) day(-1), 99 +/- 0.98%) were also higher at the algae fed with 500 lx light intensity. Copepods survived well and continuously produced fecal pellets on a 500 lx light intensity diet of Chlorella vulgaris. The results suggest that low light intensity influenced the grazing rate, fecundity and survival of copepod T.decipiens.
KeywordFreshwater cyclops Grazing and clearance Fecundity Fecal pellet Survival
DOI10.1016/j.aquaculture.2020.735321
Indexed BySCI ; SCI
Language英语
WOS Research AreaFisheries ; Marine & Freshwater Biology
WOS SubjectFisheries ; Marine & Freshwater Biology
WOS IDWOS:000535433700018
WOS KeywordACARTIA-TONSA COPEPODA ; HATCHING SUCCESS ; EGG-PRODUCTION ; POPULATION-DYNAMICS ; NUTRITIONAL VALUES ; FECAL PELLETS ; NAUPLII ; FOOD ; TEMPERATURE ; CALANOIDA
PublisherELSEVIER
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Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/36498
Collection其他_期刊论文
Corresponding AuthorRadhakrishnan, Divya Kandathil
Affiliation1.Kerala Univ Fisheries & Ocean Studies, Sch Ocean Sci & Technol, Cochin 682506, Kerala, India
2.Chinese Acad Sci, Key Lab Aquat Biodivers & Conservat, Inst Hydrobiol, Wuhan 430072, Peoples R China
3.Texas A&M Univ Commerce, Dept Biol & Environm Sci, Commerce, TX USA
Recommended Citation
GB/T 7714
Radhakrishnan, Divya Kandathil,AkbarAli, Isamma,Sathrajith, Arunjith Thundiparambil,et al. Grazing rates of freshwater copepod Thermocyclops decipiens (Kiefer, 1929) on Chlorella vulgaris under different light intensities[J]. AQUACULTURE,2020,525:7.
APA Radhakrishnan, Divya Kandathil,AkbarAli, Isamma,Sathrajith, Arunjith Thundiparambil,Schmidt, Bjorn, V,Sivanpillai, Sureshkumar,&Vasunambesan, Sankar Thazhakot.(2020).Grazing rates of freshwater copepod Thermocyclops decipiens (Kiefer, 1929) on Chlorella vulgaris under different light intensities.AQUACULTURE,525,7.
MLA Radhakrishnan, Divya Kandathil,et al."Grazing rates of freshwater copepod Thermocyclops decipiens (Kiefer, 1929) on Chlorella vulgaris under different light intensities".AQUACULTURE 525(2020):7.
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