The concentration of cadmium, lead, copper and zinc inChironomus gr.thummi larvae (Diptera, Chironomidae) with deformedversus normal menta

Bisthoven, L. G. Janssens de; Timmermans, Klaas R.; Ollevier, Frans

doi:10.1007/bf00007671

Cited by 84 publications

(44 citation statements)

References 20 publications

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“…Several studies have shown the relationship between the occurrence of structural deformities in Chironomidae larvae and degraded environmental conditions, resulting from contamination by heavy metals, herbicides, fungicides, and insecticides (Dermott, 1991;Warwick, 1985). According to Janssens De Bisthoven et al (1992), these deformities can be interpreted as a sign of sublethal pollutant concentrations which in the Imboassica Lagoon would probably be related to domestic sewage release and even to heavy metal presence. Deformities have been used in environmental impact evaluation studies on freshwater ecosystems (Janssens De Bisthoven et al, 1998;Diggins & Stewart, 1998), and suggested as a biological parameter to be included in long-term water-quality monitoring programs (Callisto et al, 2000).…”

Section: Discussionmentioning

confidence: 99%

Diversity and biomass of Chironomidae (Diptera) larvae in an impacted coastal lagoon in Rio de Janeiro, Brazil

et al. 2002

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Diversity and biomass of Chironomidae larvae were studied between January-November 1993 and MarchNovember 1994 in an impacted lagoon in Rio de Janeiro, Southeastern Brazil, in an attempt to establish the ecological consequences of anthropogenic eutrophication processes. Nine hundred and seventyfive organisms belonging to the Tanypodinae, Orthocladiinae, and Chironominae were collected. Polypedilum (62%) and Chironomus (58%) were the most common genera found in the limnetic and littoral zones.

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Section: Discussionmentioning

confidence: 99%

Diversity and biomass of Chironomidae (Diptera) larvae in an impacted coastal lagoon in Rio de Janeiro, Brazil

et al. 2002

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“…This group has been used as a bio-monitoring model for eco-toxicological tests (Warwick 1988;Jannssen de Bisthoven et al 1992) and has been included in both the Extended Biotic Index (De Pauw et al 1992) and the Annex V.1.2.6 of the E. C. Water Framework Directive. The larval stage is the stage of the Chironomids' life cycle when they are exposed to water and sediment contaminants.…”

Section: Chironomids (Diptera) a Group Important For Assessing Contamentioning

confidence: 99%

Chironomids (Diptera) and their salivary gland chromosomes as indicators of trace-metal genotoxicity

Michailova

Sella

Petrova

2012

Italian Journal of Zoology

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The long-term impact of pollution in freshwater aquatic environments can be assessed realistically only if the mutagenic effects of pollutants on organisms inhabiting aquatic biotopes are evaluated. To do this, the larvae of Chironomids (Diptera) can serve as suitable indicators of potential environmental genotoxicity. These larvae exhibit aberrations in their polytene chromosomes, which, when analyzed, indicate an early response to toxicity more efficiently than morphological analysis, up to now the usual technique. Chironomids have excellent salivary gland chromosomes with well-defined bands and permanent somatic pairing, where there are two important regions of active transcription-Balbiani rings (BRs) and Nucleolar organizers (NOR). We have described the responses of different Chironomid species in two situations: in the field and in the laboratory, where we performed Cr, Al, Pb and Cu trace-metal-exposure experiments with Chironomus riparius. In both situations, the genome response consisted in a statistically significant increase in somatic chromosome aberrations and decrease in BR and NOR activity to levels lower than those of larvae under standard conditions. The main chromosome aberrations consisted in inversions, amplifications, deletions and deficiencies. Deletions in the chromosome G in C. riparius transformed it into a pompon-like structure. Chromosome aberrations were not randomly distributed: they occurred mainly in sites with repetitive DNA elements that have a highly interspersed location in the C. riparius genome. Hence C. riparius is the species most likely to produce aberrations and can be used as a model for cost-effective monitoring of the early genomic response to trace metals and other stress agents.

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“…Since chironomids are still present in rivers heavily polluted with metals (Clements et al ., 1988 ;Janssens de Bisthoven et al, 1992), it is apparent that they are able to tolerate pollution . Yet, observations on increased metal tolerance in chironomids have shown contradictory trends.…”

Section: Introductionmentioning

confidence: 99%

Site specific differentiation in metal tolerance in the midge Chironomus riparius (Diptera, Chironomidae)

1995

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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 General rightsIt is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), other than for strictly personal, individual use, unless the work is under an open content license (like Creative Commons). 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

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The concentration of cadmium, lead, copper and zinc inChironomus gr.thummi larvae (Diptera, Chironomidae) with deformedversus normal menta

Cited by 84 publications

References 20 publications

Diversity and biomass of Chironomidae (Diptera) larvae in an impacted coastal lagoon in Rio de Janeiro, Brazil

Diversity and biomass of Chironomidae (Diptera) larvae in an impacted coastal lagoon in Rio de Janeiro, Brazil

Chironomids (Diptera) and their salivary gland chromosomes as indicators of trace-metal genotoxicity

Site specific differentiation in metal tolerance in the midge Chironomus riparius (Diptera, Chironomidae)

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