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Bisthoven, Luc Janssens de; Postma, J.F.; Vermeulen, Angelo; Goemans, Geert; Ollevier, Frans

doi:10.1023/a:1010367524314

Cited by 35 publications

(9 citation statements)

References 27 publications

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“…Vermeulen et al (2000) also found a high incidence of deformities in their cultures and in the controls of their tests (from 34 to 56%) and concluded that the crossing between relatives in the cultures is the main thing responsible for the high indexes found. The same condition was observed by Bird (1997) and Janssens de Bisthoven (2001) including the organisms age and no renovation of the cultures. Culture condition can also promote deformities, as observed by Madden et al (1992).…”

Section: Resultssupporting

confidence: 79%

Frequency of mentum deformity in Chironomus sancticaroli (Diptera: Chironomidae) in a laboratory culture

Silva¹,

Marigo²,

Viveiros³

et al. 2019

Rev. ambiente água

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The midge Chironomus sancticaroli (Diptera: Chironomidae) has been used in ecotoxicological tests because it is sensitive to a variety of inorganic pollutants. Among the parameters used to evaluate the toxicity of a substance is the frequency of mentum deformity, which is part of the oral system of this organism. However, there is still no consensus on the baseline level (percentage) of acceptable deformities in laboratory cultures not exposed to pollutants. The determination of this variable is important to ensure the validity of bioassays and to compare cultures from different research and teaching institutions. Once this value is established, it will also be used to monitor the quality of organisms cultured, since factors such as inbreeding could increase the frequency of mentum deformity. Thus, the objective of this study was to quantify the percentage of mentum deformity in the fourth instar of C. sancticaroli larvae from the culture of the Laboratory of Aquatic Ecosystems, at Embrapa Meio Ambiente. The average frequency of mentum deformity obtained was 6,63%. It is believed that factors such as the renewal of the culture with the inclusion of spawns from the laboratories of other institutions, as well as the control of the quality of the dilution water and the sediment of the breeding may have contributed to a low frequency of mentum deformity of the culture observed in this study.

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Section: Resultssupporting

confidence: 79%

Frequency of mentum deformity in Chironomus sancticaroli (Diptera: Chironomidae) in a laboratory culture

Silva¹,

Marigo²,

Viveiros³

et al. 2019

Rev. ambiente água

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“…Abnormalities occured at different extents especially in the mentum as a result of exposure of the larvae to heavy metals, agricultural pesticides and fertilizers, and industrial effluents (McDonald and Taylor 2006). These deformities are similar to those observed in other chironomid cultures (Bird et al 1995) and in several field studies (Dickman and Rygiel 1996;Janssens de Bisthoven et al 2001;Warwick and Tisdale 1988;Warwick 1990). No difference has been found in the number of deformities in the pesticides treatments in the laboratory.…”

Section: Journal Of Environment and Ecologysupporting

confidence: 87%

Effects of Three Selected Pesticides on the Non-Biting Midges (Diptera: Chironomidae) in Rice Agro-Ecosystem of an area of West Bengal; India

Pan¹,

Majumdar²,

Jana³

et al. 2017

JEE

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Deformities of non biting midge larvae’s mouthparts are considered as indicators of environmental degradation that caused by water pollutants like pesticides, heavy metals, organic contaminants etc. The present investigation was aimed to assess the effects of 3 pesticides, viz. Cartap Hydrochloride, Carbofuran and Fipronil on deformities of chironomid larvae of the Rice fields of Village Dhunui; Memari Block-II of Burdwan district in West Bengal. The study area is dominated by the species of the genus Chironomus of chironomid community. Concurrently six (6) species were considered. The average percentage of mouthpart deformities was 14% in all chironomid larvae. Highest degree of malformation was noticed in Chironomus circumdatus in which more than 18.90% of all specimens were affected. However, further investigative efforts are essential to investigate the actual explanation in support of the occurrence of high degree of deformities in chironomid.

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“…28,49 Concerning the second aspect, mechanical wear, breakage or abrasion of the mentum can be recognized because its dorsal and ventral plates show irregular borders. 21,[50][51][52] The survey carried out in Lake Trasimeno showed that the incidence of C. plumosus mouthpart (mentum) deformity was low in the central area during 2000-2002 and 2010. The percentage of deformities detected in this station reached values (13%) close to those indicated in the literature as a natural background reference in environments with low load of toxicants (8%).…”

Section: Discussionmentioning

confidence: 99%

Chironomid mouthpart deformities as indicator of environmental quality: a case study in Lake Trasimeno (Italy)

2012

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The aim of the present study was to monitor mouthpart deformities of Chironomus plumosus (Insecta-Diptera) in Lake Trasimeno (2000-2010) in relation with sediment contamination by heavy metals, which is one of the main causes of deformity induction. In Lake Trasimeno, concentrations of heavy metals in the investigated littoral zone were low, in comparison with those of the central area. By contrast, the incidence of deformities was much higher in the littoral station (2006-2009) than in the central area. In the littoral zone, the deformities progressively decreased and by 2010 reached values similar to those observed in the central area (2000-2002, 2010). This decrease was mainly due to the reduction of severe deformities, thus indicating an environmental quality recovery of this littoral sector. Chemical analysis revealed that the higher incidence of deformities in the littoral zone was not caused by heavy metal contamination, unless they may have contributed to a joint action with other toxicants. The present study on Lake Trasimeno provided additional evidence that chironomid mouthpart deformities can be used in biomonitoring programs to evaluate sediment contamination by toxicants. Since mouthpart deformities may also be induced by compounds not included in routine chemical analyses, they may better reflect sediment quality than chemical analysis alone.

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Cited by 35 publications

References 27 publications

Frequency of mentum deformity in Chironomus sancticaroli (Diptera: Chironomidae) in a laboratory culture

Frequency of mentum deformity in Chironomus sancticaroli (Diptera: Chironomidae) in a laboratory culture

Effects of Three Selected Pesticides on the Non-Biting Midges (Diptera: Chironomidae) in Rice Agro-Ecosystem of an area of West Bengal; India

Chironomid mouthpart deformities as indicator of environmental quality: a case study in Lake Trasimeno (Italy)

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