Anthropogenic activities altering the ecosystem in Lake Yamzhog Yumco, southern Qinghai-Tibetan Plateau

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 904, P. 166715 - 166715

Published: Sept. 4, 2023

Language: Английский

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The first DNA barcode library of Chironomidae from the Tibetan Plateau with an evaluation of the status of the public databases

Ecology and Evolution, Journal Year: 2023, Volume and Issue: 13(2)

Published: Feb. 1, 2023

The main aim of this study was to curate a COI barcode library Chironomidae from the Tibetan Plateau (TP) as an essential supplement public database. Another is evaluate current status database in aspects taxonomic coverage, geographic representation, quality, and efficiency for molecular identification, Plateau, China. In study, 512 individuals TP were identified based on morphological taxonomy analysis. metadata records downloaded BOLD, quality barcodes ranked using BAGS program. reliability identification evaluated with newly curated BLAST method. comprised 159 species 54 genera, which 58.4% likely new science. There great gaps coverage representation database, only 29.18% at level. concern, 20% being determined concordant between BINs species. accuracy poor, about 50% matched could be correctly level identity threshold 97%. Based these data, some recommendations are included here improving barcoding studies Chironomidae. richness much higher than ever recorded. Barcodes more groups regions urgently needed fill gap Users should take caution when databases adopted reference libraries assignment.

Language: Английский

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Procladius (Diptera, Chironomidae) of Europe and a global view

Zootaxa, Journal Year: 2025, Volume and Issue: 5591(1), P. 1 - 127

Published: Feb. 25, 2025

A project initiated in 1991 to untangle species-taxonomy of European Procladius (Chironomidae) has been accomplished. Increasing amount material, loans and especially the development barcodes BIN-system BOLD, made finalization possible after about 33 years. An iterative process based on detailed studies male morphology barcode clusters, BINs, resulted identification 27 species present Europe, most them also Asia (China, Japan, Mongolia Russia) North America (Canada United States). One hundred morphological characters were adopted for which 30 important ones used construct a key an additional helpdesk. The contains three each separation as this is frequently needed reliable identification. ratio GspR, outer length gonostylus versus margin gonostylus, proved be character All but two have BINs. one BIN contained only species. exception that previously was divided into BINs containing morphologically distinct Intraspecific divergence within ranged from 0‒3.3% interspecific 2.0‒8.8%. Four new are presented. These P. exilis Brodin, species, gemma saeticubitus tenebricosus Brodin & Hellberg, other 23 presented follows with synonyms brackets: appropinquatus (Lundström, 1916) [P. ruris Roback, 1971], bellus (Loew, 1866) [Tanypus rufovittatus van der Wulp, 1874, latifrons Kieffer, 1922, leucocoma profundorum 1923], breviatus Remmert, 1953, choreus (Meigen, 1804) [Chironomus incomptus Walker, 1856], clavus 1971, crassinervis (Zetterstedt, 1838) pectinatus 1909, bifasciatus Goetghebuer, 1936, cinereus abetus culiciformis (Linnaeus, 1767) sagittalis Trichotanypus scapularis 1924, freemani Sublette, 1964 part], dentus ferrugineus (Kieffer, 1918) [Trichotanypus parvulus 1918, fulvus rugulosus Saether 2010], fimbriatus Wülker, 1959, flavifrons Edwards, 1929, floralis 1915, frigidus (Holmgren, 1869) gretis imicola 1922 bathyphilus nietus islandicus (Goetghebuer, 1931) fuscus Brundin, 1949, vesus longistilus suecicus 1949], lugens 1915 macrotrichus lugubris 1850) barbatus johnsoni 1980], nudipennis 1947, pruinosus 1924), signatus nigriventris denticulatus simplicistilus Freeman, 1948, tatrensis Gowin, 1944. In addition, 12 not found Europe briefly described it indicated where they appear species-key. Species reported 133 countries or autonomies worldwide. As many extreme cold places northern hemisphere, mean annual temperature ‒10 C more. Altitude records at 4 730 m above sea level Himalayas. Larvae known omnivorous, although predation might more beneficial growth. Synonyms dubious names reduce number valid (accepted) according Catalogue Life Systema Dipterorum 34% After inclusion four study others worldwide land 69.

Language: Английский

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Morphological taxonomy and DNA barcoding: Should they be integrated to improve the identification of chironomid larvae (Diptera)?

Ecohydrology & Hydrobiology, Journal Year: 2023, Volume and Issue: 24(1), P. 1 - 10

Published: Nov. 23, 2023

Among freshwater benthic fauna, one of the most frequently observed groups insects is midges family Chironomidae (Diptera). Their identification to species level by morphology alone difficult or even impossible (e.g., at larval and pupal stages). This basically results from their high phenotypic plasticity, existence cryptic species, need for access complete, identified individuals comparison. Consequently, DNA barcoding becoming more popular. technique uses sequence base pairs in a specific fragment section as barcodes individual species. method not only allows sister but also facilitates discovery new, previously unknown ones. Despite these benefits, molecular techniques have some limitations, including lack complete barcode library properly purified genetic material. What needed combine new taxonomic methods with elementary knowledge about ecology chironomid In this study, we attempted compare synthesize advantages disadvantages conventional vs. show benefits integration into hybrid approach. The suggested seems be an optimal methodological solution that includes elements Artificial Intelligence accurately assess communities terms qualitative structure, which usually indicates biodiversity ecosystems. Thus, it fundamental tool assessing natural potential water bodies according principles EU Biodiversity Strategy 2030.

Language: Английский

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New descriptions of the larval and pupal stages of Orthocladius nitidoscutellatus and Psectrocladius nevalis from Xizang, China (Diptera, Chironomidae)

Biodiversity Data Journal, Journal Year: 2024, Volume and Issue: 12

Published: April 3, 2024

Tibetan Plateau is one of the most typical areas biodiversity in world because its unique environmental and regional units, which breed biological communities concentrate on many rare wild animals plants. Research Chironomidae relatively weak. At present, identification species mainly depends male adults, while larvae pupae difficult there less research them. During investigations insect diversity Plateau, larval pupal stages Orthocladius nitidoscutellatus Lundström, 1915 Psectrocladius nevalis Akhrorov, 1977 were described illustrated. Matching based DNA barcodes. Neighbour-joining trees reconstructed, known COI barcodes, respectively.

Language: Английский

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Parochlus Enderlein, 1912 (Chironomidae, Podonominae) in the mountains of Chiapas, Mexico, evidences dispersal via continental America

Freshwater Science, Journal Year: 2024, Volume and Issue: 43(3), P. 364 - 372

Published: July 1, 2024

Language: Английский

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Common chironomids drive the biodiversity–temperature relationship during the Younger Dryas-Holocene transition in a southern Baltic coastal lake

Hydrobiologia, Journal Year: 2023, Volume and Issue: 851(3), P. 503 - 525

Published: Sept. 13, 2023

Abstract The Younger Dryas-Holocene transition represents a period of significant thermal change, comparable in magnitude to modern warming, yet colder context and without the effect anthropogenic disturbance. This is useful as reference tackle how biodiversity affected by temperature natural conditions. Here, we addressed change during this southern Baltic coastal lake (Konarzewo Lake, Poland), inferred chironomid remains. We evaluated changes communities used Hill numbers explore commonness rarity underlie attributable warming. found evidence warming at Konarzewo Lake transition, with temperatures Dryas supporting NW–SE gradient summer across Europe. Chironomid drastically changed transition. However, showed no response when rare morphotypes were emphasized (order q = 0) or weak they balanced common 1). number order 2, emphasizing most morphotypes, consistently increased different sample sizes coverages. illustrates rather than ones, may boost facing

Language: Английский

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DNA barcodes and morphology reveal new species within the Rheotanytarsus guineensis species group from China (Diptera: Chironomidae)

Archives of Insect Biochemistry and Physiology, Journal Year: 2023, Volume and Issue: 114(4)

Published: Nov. 2, 2023

The Rheotanytarsus guineensis species group (Diptera: Chironomidae) is a diverse and taxonomically difficult group. Using DNA barcodes, we found five new within the R. reviewed based on adult males from China. guoae Lin & Yao sp. n., miaoae qiangi yueqingensis yui n. are all described figured. A key to known of worldwide provided for first time.

Language: Английский

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The mystery of distribution of Smittia brevipennis (Diptera, Chironomidae, Orthocladiinae)

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 16, 2024

Abstract Two new localities for Smittia brevipennis from the Franz-Josef Land Archipelago and Vize Island, Russian Arctic, are reported. A description of larvae female imago is given. Zero rate mutations in gene COI found specimens Canada, Alaska, Svalbard, Island unique Chironomids inhabiting such extensive range indicates a relatively recent rapid colonization high-Arctic areas by . Possible routes means historical dispersal across circumpolar this unusual brachypterous parthenogenetic orthoclad discussed.

Language: Английский

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A Microcosm Analysis of Species-Specific Responses of Chironomidae on Heavy Metal Pollution in The Nyanza Gulf of Lake Victoria

East African Journal of Environment and Natural Resources, Journal Year: 2024, Volume and Issue: 7(1), P. 401 - 422

Published: Sept. 3, 2024

The Chironomidae family, known as "non-biting midges" in their adult stage and "bloodworms" larval stage, consists of diverse dipteran insects inhabiting various global aquatic environments. Despite extensive research, data on the polluted Nyanza Gulf Lake Victoria, Kenya, is scarce, molecular identification methods have not been explored. This study aimed to quantify heavy metal concentrations water, sediment, insect samples assess impact Chironomid species identified using mitochondrial DNA barcoding cytochrome oxidase subunit 1 (COI) gene. Analysis Variance was used determine if there were any statistically significant differences across different sample types or locations along pollution gradient. Chironomids collected from Gulf, focusing a Results showed that arsenic (As), lead (Pb), cadmium (Cd) insect, sediment exceeded standard limits, while mercury (Hg) within limits. Significant variations (p ≤ 0.05) Pb levels observed water samples, varied significantly 0.05), with showing highest variation 0.0001). Insect exhibited 0.0001) As Hg contents. Genetic analysis two species: Chironomus transvaalensis at heavily Kisumu station pseudothummi moderately Kendu Bay Homa stations. Additionally, unique found Ndere Island, relatively clean site restricted human activities. Sequence comparisons indicated proximity but also highlighted evolutionary significance uniqueness species. demonstrated potential use genetic determining diversity, community structure, abundance relation concentration. It suggests may act selective pressure, driving evolution recommends combining approaches other sources for comprehensive understanding this monitoring

Language: Английский

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