Characteristics of six cladocerans in relation to ecotoxicity testing

Wu, Yonggui and Lin, Chuxia and Yuan, Ling (2007) Characteristics of six cladocerans in relation to ecotoxicity testing. Ecological Indicators, 7 (4). pp. 768-775. ISSN 1470-160X

Abstract

Investigation was made to compare some biological characteristics relevant to ecotoxicity testing among six cladoceran species, including Daphnia magna, Daphnia carinata, Daphnia pulex, Ceriodaphnia quadrangular, Bosmina longirostris, and Simocephalus vetulus. The results show that D. carinata had advantages over other cladoceran species for being used as a test organism, particularly for ecotoxicological assessment of aquatic environments in tropical and subtropical areas. D. carinata had similar body size and total number of offspring per female to D. magna. However, D. carinata was more sensitive to the reference toxicant and had much shorter reproduction cycle than D. magna. D. carinata had similarity to D. pulex, C. quadrangular, S. vetulus and B. longirostris in terms of sensitivity to the reference toxicant and length of reproduction cycle. However, D. carinata was much larger in size and produced much more offspring per female than any of D. pulex, C. quadrangular, S. vetulus and B. longirostris. Among the investigated cladocerans, only the neonates (2- and 4-day-old) of D. carinata exhibited phototaxis that was sufficiently remarkable. The low among-generation variation in phototaxis index (Ip) of D. carinata and the close relationship between Ip and the concentration of the ISO standard toxicant (K2Cr2O7) appears to suggest that Ip can be used as an excellent test endpoint for ecotoxicity testing.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Permanent restricted access to published version due to publisher copyright policy.
Depositing User: epEditor USQ
Faculty / Department / School: Current - USQ Other
Date Deposited: 03 Aug 2011 10:37
Last Modified: 03 Jul 2013 00:37
Uncontrolled Keywords: bioassay; biological characteristics; cladoceran; ecotoxicity; phototactic behavior; test endpoint; biodiversity; aquatic environment; crustacean; ecotoxicology; phototaxis; reproductive cycle; toxicity test
Fields of Research (FOR2008): 06 Biological Sciences > 0602 Ecology > 060204 Freshwater Ecology
03 Chemical Sciences > 0399 Other Chemical Sciences > 039901 Environmental Chemistry (incl. Atmospheric Chemistry)
05 Environmental Sciences > 0502 Environmental Science and Management > 050206 Environmental Monitoring
Socio-Economic Objective (SEO2008): D Environment > 96 Environment > 9611 Physical and Chemical Conditions of Water > 961103 Physical and Chemical Conditions of Water in Fresh, Ground and Surface Water Environments (excl. Urban and Industrial Use)
Identification Number or DOI: doi: 10.1016/j.ecolind.2006.09.001
URI: http://eprints.usq.edu.au/id/eprint/18888

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