On the genus Chaetocladius s. str. Kieffer, 1911 from Switzerland with descriptions of five new relic species occurring in glacial alpine springs and streams (Diptera, Chironomidae)

Moubayed-Breil, Joel; Lods-Crozet, Brigitte

doi:10.3897/alpento.2.22759

Cited by 8 publications

(1 citation statement)

References 23 publications

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“…Knowledge on the taxonomy, geographical distribution and ecology of the known Chaetocladius s. str. species from Europe and neighbouring areas are included in Goetghebuer (1940Goetghebuer ( -1950, Brundin (1947Brundin ( , 1956, Pankratova (1970), Caspers (1987), Cranston et al (1989), Moubayed (1989), Saether (1990), Langton (1991), Makarchenko & Makarchenko (2001, 2003, 2004, 2006a-b, 2007, 2009, 2011a-b, 2013a-b, 2018, Langton & Pinder (2007), Zelentsov (2007), Langton & Armitage (2010), Stur & Spies (2011), Ashe & O'Connor (2012), Kobayashi (2012); Wang et al (2012); Saether & Spies (2013), Makarchenko et al (2014), Moubayed-Breil (2017), Moubayed-Breil & Dia (2017), Rossaro et al (2017), Moubayed-Breil & Lods-Crozet (2017), , Moubayed-Breil & Bitusik (2019). Worldwide, the genus Chaetocladius Kieffer, 1911 comprises about 75 species of which, only about 42 are reported from Europe.…”

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confidence: 99%

Chaetocladius berythensis sp. n., C. callauensis sp. n., C. guardiolei sp. n. and C. parerai sp. n., four relict species inhabiting glacial springs and streams in eastern Pyrenees and Lebanon (Diptera: Chironomidae)

Moubayed¹,

Langton

2019

Chironomus

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Four new species of the genus Chaetocladius s. str. (C. berythensis sp. n., C. callauensis sp. n., C. guardiolei sp. n. and C. parerai sp. n.) are diagnosed and described based on material collected in some glacial springs and small streams located at high altitude (1800-2300 m). While C. berythensis sp. n. is described only as male adult from the upper basin of the Beirut River (Lebanon Mount, Western range, Mount Sannine), C. callauensis sp. n. C. guardiolei sp. n. and C. parerai sp. n. are described as male adult accompanied by descriptions of tentatively associated male pupal exuviae from the upper basin of the Mantet River and Soques stream (eastern Pyrenees, West France). Additional taxonomic notes including illustrations and brief descriptions of 10 taxa/species based on male adults, male pharate adults and pupal exuviae collected in glacial springs, peat bogs and streams located at high altitude are provided. On the basis of characters in the male adult, only C. berythensis sp. n. keys to the laminatus-group, which is reported for the first time from the Levantine sub-region. Based on the unusual shape of both inferior volsella and gonostylus, the four new Chaetocladius species each belong to local biogeographic elements: C. berythensis sp. n. to a ‘Levantine element’, while C. callauensis sp. n., C. guardiolei sp. n. and C. parerai sp. n. belong to a ‘Pyrenean element’. All of the four new species are considered to be relict representatives of glacial helocrenes and cold stenothermic streams. Such species may be biological indicators and biogeographic representatives of global warming and local climate change.

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Section: Introductionmentioning

confidence: 99%

Chaetocladius berythensis sp. n., C. callauensis sp. n., C. guardiolei sp. n. and C. parerai sp. n., four relict species inhabiting glacial springs and streams in eastern Pyrenees and Lebanon (Diptera: Chironomidae)

Moubayed¹,

Langton

2019

Chironomus

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Long-term patterns of stream macroinvertebrates in an alpine cirque landscape

Robinson,

Jolidon,

Lods-Crozet

2024

Aquat Sci

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Alpine landscapes are notable regarding their sensitivity to environmental change. Surface waters are especially sensitive as many are influenced by glacial meltwaters that are diminishing with the retreat of glaciers worldwide. The Macun Lakes region, Swiss National Park, is an alpine cirque landscape housing a number of lakes interconnected by streams. The area has been non-glaciated for decades, although rock glaciers are still present in the south basin. Surface waters, 10 stream sites in the present study, have been monitored in mid-summer since the year 2001 for physico-chemistry, periphyton and macroinvertebrates (including 74 species of chironomids). Water physico-chemistry revealed that the two main basins in the catchment differed, reflecting the inputs of rock glacier waters in the south basin. However, trends suggest that waters are becoming more similar as rock glacier inputs diminish over time along with a general decrease in nitrogen levels in all waters. Periphyton biomass showed some spatial differences among sites and a general decrease after 2010. Macroinvertebrate assemblages, including chironomids, clearly differed among basins and spatially along the stream network in each basin. Notably, no significant temporal trend was observed in the long-term data for macroinvertebrates, including chironomids, at the monitored sites. The results suggest that lotic macroinvertebrates may be buffered by the interconnectedness of streams and lakes in the landscape, which mitigates major response patterns of running waters to environmental change.

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