Lethal and sublethal effects of low dissolved oxygen condition on two aquatic invertebrates, <i>Chironomus tentans</i> and <i>Hyalella azteca</i>

Irving, Elaine C.; Liber, Karsten; Culp, Joseph M.

doi:10.1897/03-230

Cited by 29 publications

(17 citation statements)

References 25 publications

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“…The magnitude of such variations in water storage containers is unclear. Nevertheless, it is reasonable to assume that lower oxygen content reduces the suitability for mosquito immature development, as has been shown for several mosquito species [ 72 ] and other aquatic invertebrates [ 73 ].…”

Section: Discussionmentioning

confidence: 99%

A cross-sectional survey of Aedes aegypti immature abundance in urban and rural household containers in central Colombia

et al. 2017

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Background Aedes aegypti, the major vector of dengue, breeds in domestic water containers. The development of immature mosquitoes in such containers is influenced by various environmental, ecological and socioeconomic factors. Urban and rural disparities in water storage practices and water source supply may affect mosquito immature abundance and, potentially, dengue risk. We evaluated the effect of water and container characteristics on A. aegypti immature abundance in urban and rural areas. Data were collected in the wet season of 2011 in central Colombia from 36 urban and 35 rural containers, which were either mosquito-positive or negative. Immature mosquitoes were identified to species. Data on water and container characteristics were collected from all containers.ResultsA total of 1452 Aedes pupae and larvae were collected of which 81% were A. aegypti and 19% A. fluviatilis. Aedes aegypti immatures were found in both urban and rural sites. However, the mean number of A. aegypti pupae was five times higher in containers in the urban sites compared to those in the rural sites. One of the important factors associated with A. aegypti infestation was frequency of container washing. Monthly-washed or never-washed containers were both about four times more likely to be infested than those washed every week. There were no significant differences between urban and rural sites in frequency of washing containers. Aedes aegypti immature infestation was positively associated with total dissolved solids, but negatively associated with dissolved oxygen. Water temperature, total dissolved solids, ammonia, nitrate, and organic matter were significantly higher in urban than in rural containers, which might explain urban-rural differences in breeding of A. aegypti. However, many of these factors vary substantially between studies and in their degree of association with vector breeding, therefore they may not be reliable indices for vector control interventions.ConclusionsAlthough containers in urban areas were more likely to be infested with A. aegypti, rural containers still provide suitable habitats for A. aegypti. Containers that are washed more frequent are less likely to produce A. aegypti. These results highlight the importance of container washing as an effective vector control tool in both urban and rural areas. In addition, alternative designs of the highly productive washbasins should continue to be explored. To control diseases such as dengue, Zika and chikungunya, effective vector breeding site control must be implemented in addition to other interventions.

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Section: Discussionmentioning

confidence: 99%

A cross-sectional survey of Aedes aegypti immature abundance in urban and rural household containers in central Colombia

et al. 2017

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“…The results are rather counterintuitive in that the lowest measured survival and growth rates were recorded in the presence of high dissolved oxygen levels. Although the lethal and sublethal effects of low dissolved oxygen levels have been reported for both C. tentans and H. azteca (Irving et al 2004), experimental data also suggest that Chironomus larvae and several other aquatic invertebrates can be harmed by high dissolved oxygen levels (Fox and Taylor 1954, 1955), in exposure conditions lacking solid substrates. In the present study, the lower dissolved oxygen levels observed in chambers with control sediments are likely due to higher microbial respiration from the microflora present in the sediments compared to the treatment chambers containing only DWTRs as substrates.…”

Section: Resultsmentioning

confidence: 99%

Acute and Chronic Toxicity Testing of Drinking Water Treatment Residuals in Freshwater Systems

Zhou

Wallace

Kroll

et al. 2021

Enviro Toxic and Chemistry

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The beneficial use of drinking water treatment residuals (DWTRs) faces barriers due primarily to uncertainties and concerns about their potential environmental impacts. We used total and water leachable toxic metal concentrations and 2 benthic organism-based bioassays to identify suitable DWTR substrates for introduction to freshwater systems. Using total metal contents and the consensus probable effect concentration concept, 3 DWTRs were selected and used in elutriate and toxicity studies. The concentrations of water leachable Ag, As, Cd, Cu, Cr, Ni, Pb, and Zn were below the US Environmental Protection Agency's ambient water quality criteria. Using the long-term 65-d life cycle Chironomus tentans test and 4 different endpoints (survival, adult emergence, egg case production, and number of eggs produced per female), no statistical differences were found between the DWTR treatments and the controls. Similarly, results obtained using the 10-d Hyalella azteca test showed no toxicity. However, although both survival and growth were recorded in all bioassays, the results of the 10-d C. tentans and the 28-d H. azteca tests were ambiguous. For C. tentans, 2 of the 3 DWTRs resulted in significantly lower survival rates compared to the controls. For H. azteca, no significant growth differences were observed between controls and DWTR treatments, but 2 of the 3 DWTRs resulted in significantly lower survival rates than the controls. Overall, these results suggest that certain DWTR substrates could be suitable for introduction to aquatic systems.

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“…The test system constructed to expose B. tricaudatus to arsenic under controlled DO levels was similar to that used by Irving et al [13]. Variable‐area flowmeters (Cole‐Parmer Instrument Company, Vernon Hills, IL, USA) controlled the flow of nitrogen (industrial grade) and air (breathing grade) to each test vessel (500‐ml polyethylene containers) to maintain DO levels within 0.5 mg/L of nominal values.…”

Section: Methodsmentioning

confidence: 99%

Effects of arsenic speciation and low dissolved oxygen condition on the toxicity of arsenic to a lotic mayfly

Irving

Lowell

Culp

et al. 2008

Enviro Toxic and Chemistry

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The influence of site-specific conditions on contaminant bioavailability and toxicity to benthic invertebrates is a key consideration in the environmental risk assessment process. This is particularly relevant for contaminants with complex speciation chemistries, such as arsenic. The present study addressed uncertainties regarding arsenic toxicity to a mayfly (Baetis tricaudatus) under low dissolved oxygen (DO) conditions characteristic of many contaminated sites. Arsenic toxicity (arsenite, As(III); arsenate, As(V)) to mayfly nymphs was assessed under two DO scenarios (68 and 84% saturation). Arsenic speciation ratios were determined during testing to confirm the nature of arsenic exposure. The present study found that As(III) was more lethal and bioaccumulated to a greater degree in B. tricaudatus compared to As(V), but the sublethal toxicities of the two arsenic species were similar. Nymph growth and development were significantly inhibited after 12 d of exposure to both 1 mg/L of As(III) and As(V). Exposure to arsenic under low DO conditions (6.5 mg/L, 68% saturation) did not significantly affect As(III) or As(V) toxicity and bioaccumulation over 12 d. The DO level of 6.5 mg/L, however, appeared to be marginally lethal to B. tricaudatus. Results indicate that the Canadian arsenic criterion for the protection of aquatic life (5 microg/L) is protective of B. tricaudatus and is low enough to accommodate differences in arsenic toxicity because of the interconversions between As(III) and As(V). These findings provide insight regarding the toxicity and speciation of arsenic under DO conditions considered to be low for this lotic mayfly species and representative of existing conditions at mine sites in northern Canada.

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Lethal and sublethal effects of low dissolved oxygen condition on two aquatic invertebrates, Chironomus tentans and Hyalella azteca

Cited by 29 publications

References 25 publications

A cross-sectional survey of Aedes aegypti immature abundance in urban and rural household containers in central Colombia

A cross-sectional survey of Aedes aegypti immature abundance in urban and rural household containers in central Colombia

Acute and Chronic Toxicity Testing of Drinking Water Treatment Residuals in Freshwater Systems

Effects of arsenic speciation and low dissolved oxygen condition on the toxicity of arsenic to a lotic mayfly

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