Site specific differentiation in metal tolerance in the midge, Chironomus riparius (Diptera: Chironomidae) Postma, J.F.; Kyed, M.; Admiraal, W.
Published in: Hydrobiologia
DOI:10.1007/BF00033628
Link to publicationCitation for published version (APA): Postma, J. F., Kyed, M., & Admiraal, W. (1995). Site specific differentiation in metal tolerance in the midge, Chironomus riparius (Diptera: Chironomidae). Hydrobiologia, 315, 159-165. DOI: 10.1007/BF00033628
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Disclaimer/Complaints regulationsIf you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website. Please Ask the Library: http://uba.uva.nl/en/contact, or a letter to: Library of the University of Amsterdam, Secretariat, Singel 425, 1012 WP Amsterdam, The Netherlands. You will be contacted as soon as possible. Key words : Chironomus riparius, metal tolerance, Cd, Zn, Fe Abstract Metal tolerance in Chironomus riparius (Diptera) populations from contaminated streams was studied by comparing the effects of cadmium, zinc and iron on first generation laboratory reared midges . First instar larvae were exposed for four days, after which surviving larvae were counted and their length measured . Larvae from two highly polluted sites, kept under control conditions, grew substantially slower than those from other populations . All populations showed the same growth responses to increased zinc concentrations, but differences were found in the responses to both cadmium and iron . Since population differentiation was demonstrated in first generation laboratory animals, it is suggested that the differences between populations of C . riparius have a genetic basis .
Download date: 11 May 2018