Effect of Salinity on Chironomid Larvae (Diptera, Chironomidae) in Hypersaline Lakes of Crimea

Belyakov, V. P.; Anufriieva, Elena; Bazhora, Alexandra I.; Shadrin, Nickolai

doi:10.1134/s1062359018100059

Cited by 10 publications

(6 citation statements)

References 17 publications

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“…Prokopov, personal communication, March 16, 2018), up to 140 Chironomidae species have been found in Crimea. Calculations based on new and published data (Shadrin et al, 2017;Belyakov et al, 2017) showed that at salinity of 200-340 g/L, chironomid larvae were detected only in 32% of all collected samples, and only B. noctivagus was present. Taking in to account all the above, authors can propose that the chironomid fauna on the peninsula is still poorly understood, especially in a variety of water bodies with a salinity of 0-45 g/L.…”

Section: Resultsmentioning

confidence: 98%

“…Description of used standard sampling methods was given (Balushkina et al, 2009;Belmonte et al, 2012;Shadrin et al, 2017). For this study, the identification of Diptera families and chironomid species was carried out in new 47 occasionally selected samples with chironomids from waters with a salinity of 0-300 g/L, in addition to 28 samples analyzed before (Shadrin et al, 2017;Belyakov et al, 2017). The entire range of salinity was conditionally divided into several intervals: In salinity range from 0 to 2 g/L (ponds, two spring pools, the Bodrak river), 10 samples were analyzed on chironomid species composition, in range of 5-10 g/L (ponds, pools, lakes) À 7 samples, in range of 15-45 g/L (ponds, pools, lakes) À 12 samples, in range of 50-80 g/L (ponds, lakes) À 9 samples, in range of 100-190 g/L (lakes) À 6 samples, and in range of 200-340 g/L (lakes) À 3 samples.…”

Section: Methodsmentioning

confidence: 99%

“…At present, 26 species of Ephedridae (Przhiboro and Shadrin, 2012;Krivosheina, 2014) are known in Crimea, which is more than 1.44% of the 1800 species in the world fauna (Kubátová-Hir sová, 2009). The species composition of chironomids has been previously studied in few types of fresh and saline water bodies (Baranov, 2011a(Baranov, ,b, 2013Baranov and Ferrington, 2013;Belyakov et al, 2017;Shadrin et al, 2017), and endemic chironomid species were found in Crimea (Baranov, 2011a). Previously, chironomid species identification was made by authors in 28 samples of all collected and only from hypersaline waters; the results of this was published (Shadrin et al, 2017;Belyakov et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

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The role of salinity as an environmental filtering factor in the determination of the Diptera taxonomic composition in the Crimean waters

Shadrin

Belyakov

Bazhora

et al. 2019

Knowl. Manag. Aquat. Ecosyst.

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Salinity is one of the most important factors in aquatic ecosystems, but its filtering role in the Diptera community species composition is still poorly studied. This issue was studied in the diverse Crimean water bodies. A total of 425 samples were collected from freshwater to hypersaline waters. In 73% of the 425 samples examined, representatives of Diptera were found; their larvae and pupae belonged to seven families. Сhironomid species composition was analyzed in 47 samples. The most common were Chironomidae, which were in 94% of samples with Diptera, Ceratopoganidae were in 8% of samples, Ephydridae were in 5% of samples, Simuliidae were in 4% of samples, Culicidae and Chaoboridae were in 4% of samples, and Syrphidae was in only one sample. A total of 14 Chironomidae genera and 21 species and forms were found; 9 of them are new for Crimea. Reduction of the dominance variants in the community, as well as the number of chironomid species, with increasing salinity may indicate an increase in the filtering role of salinity in the Diptera community species composition that is still poorly studied.

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Section: Resultsmentioning

confidence: 98%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The role of salinity as an environmental filtering factor in the determination of the Diptera taxonomic composition in the Crimean waters

Shadrin

Belyakov

Bazhora

et al. 2019

Knowl. Manag. Aquat. Ecosyst.

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“…Chironomid abundance in the lake was found to increase steadily up to and peak at around 10 m and decreased steeply at higher depths [85]. Studies have shown that high salinity levels can decrease the growth rate, survival, size, and emergence rate of some chironomid species [86,87] as well. Taxonomic studies have also confirmed an overall decrease in the diversity of benthic macroinvertebrates, including chironomids, between the late 1980s and mid-2000s [88].…”

Section: The Fall Of the Endangered White-headed Duck In The Burdur B...mentioning

confidence: 97%

Increased Water Abstraction and Climate Change Have Substantial Effect on Morphometry, Salinity, and Biotic Communities in Lakes: Examples from the Semi-Arid Burdur Basin (Turkey)

Çolak

Öztaş

Özgencil

et al. 2022

Water

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Global warming and altered precipitation patterns are predicted to intensify the water loss in semi-arid and arid regions, and such regions in Turkey will be particularly affected. Moreover, water abstraction, not least for irrigation purposes, is expected to increase markedly, posing major threats to the water balance of the lakes and thus their biodiversity. Among the closed basins in Turkey, the Burdur Closed Basin (BCB), located in the southwest of Turkey, is expected to be most affected. The BCB includes several types of aquatic ecosystems which support high biodiversity, including one Ramsar site, six Important Bird Areas, and a considerable richness of native and endemic fish species. Therefore, it is essential to analyze the potential environmental impacts of climate change and increased water abstraction on BCB lakes and their biotic communities. Here, we combined historical data on ecosystems as well as meteorological, remote sensing, and ground-truth data to analyze the changes in the temperature and precipitation of the BCB, water surface areas, and land use, as well as the potential effects on waterbird and fish communities. We calculated the water budget to elucidate water availability in the basin over the last few decades and predicted future conditions based on rainfall and temperature forecasts using climate models. The Standardized Precipitation–Evapotranspiration Index (SPEI) was used to relate the water surface area to precipitation and temperature change in the basin. Crop-farming irrigation in the BCB has increased notably since 2004, leading to intensive water abstraction from the lakes and their inflows, as well as from ground water, to meet the increased demand for irrigation. The water abstraction from the lakes, inflows to the lakes, and the groundwater in the basin has increased the water loss in the catchment substantially. Remotely sensed data on lake surface areas showed a major shrinkage of shallow lakes in the last 40 years. Moreover, the largest lake in the basin, Lake Burdur, lost nearly half of its surface area, which is worrisome since the shallower areas are the most suitable for supporting high biodiversity. Climate models (CNRM-ESM2-1GCM for temperature and GFDL-ESM4-GCM for precipitation) suggest that from 2070, the BCB will face long-term, moderate-to-severe dry periods. This, and the increased demand for water for irrigation, along with climate change, may accelerate the drying of these lakes in the near future with devastating effects on the lake ecosystems and their biodiversity.

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“…Chironomidae, the largest and most widespread freshwater dipteran, can be found in a variety of aquatic environments worldwide [27]. They are also known to tolerate saline waters, and have been found in hypersaline lakes with salinities up to 340 g.L -1 [28]. Larval ephydrids, another family within Diptera, are known to tolerate extremely saline conditions through their remarkable osmoregulation physiology.…”

Section: Macroinvertebrates Distributionmentioning

confidence: 99%

A Foundational Study of the Dehram River’s Aquatic Ecosystem: Bridging Fresh and Brackish Water

Zamanpoore,

Abbaspour

2024

Asian J. Fish. Aqu. Res.

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In this study, we explore Dehram river system, focusing on its biological characteristics, in a hot arid region. This is a freshwater stream flowing over salt formations. We examined various ecological aspects of the river, including its benthic macroinvertebrates, zooplankton, fishes, as well as some physical and chemical factors in three selected stations. The river showed variations in physical and chemical properties, with salinity and conductivity levels being the most significant. Salinity, total dissolved solids, calcium ion concentration, and nitrate levels increased downstream in the study area. Our findings revealed 13 macroinvertebrate orders present in the river, including a new record for Fars Province - the hydrobiid gastropod Ecrobia grimmi. The discovery of the four fish species in the river marked a new addition to their known geographical distribution. Certain invertebrate families were unique to station 1 and/or 2, while families Dyticidae and Simuliidae were exclusive to station 3. Other families were found in all three stations. Fish groups in the river included four identified cyprinid species, revealing new distribution ranges for them. Capoeta barroisi, known for tolerating specific environmental conditions, was found to adapt to the higher temperature, EC, and pH ranges in the river, setting new ecological records. The river exhibited unique ecological conditions such as high temperature and extranormal conductivity levels, which may have led to specific adaptations in its biota. We recommend further detailed investigations to determine whether these are new species or highly adapted populations isolated geographically and physiologically.

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Effect of Salinity on Chironomid Larvae (Diptera, Chironomidae) in Hypersaline Lakes of Crimea

Cited by 10 publications

References 17 publications

The role of salinity as an environmental filtering factor in the determination of the Diptera taxonomic composition in the Crimean waters

The role of salinity as an environmental filtering factor in the determination of the Diptera taxonomic composition in the Crimean waters

Increased Water Abstraction and Climate Change Have Substantial Effect on Morphometry, Salinity, and Biotic Communities in Lakes: Examples from the Semi-Arid Burdur Basin (Turkey)

A Foundational Study of the Dehram River’s Aquatic Ecosystem: Bridging Fresh and Brackish Water

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