Revealing the stygobiont and crenobiont Mollusca biodiversity hotspot in Caucasus: Part II. Sitnikovia gen. nov., a new genus of stygobiont microsnails (Gastropoda: Hydrobiidae) from Georgia

Chertoprud, Elizaveta M.; Palatov, Dmitry M.; Vinarski, Maxim V.

doi:10.31610/zsr/2020.29.2.258

Cited by 9 publications

(3 citation statements)

References 8 publications

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“…The reason is that these prosobranch molluscs, which were known with only a few species until very recently (i.e. 5 years ago), proved to be highly diverse in the Caucasus region ( Grego et al 2020 , Chertoprud et al 2020 , Chertoprud et al 2021 ), and are currently under intensive taxonomic investigation. Due to a large, yet undescribed species diversity, we omit them from the current article.…”

Section: Methodsmentioning

confidence: 99%

“…A good example is the Caucasus biodiversity hot-spot where, in spite of the recent advancements (e.g. Vinarski et al 2014 , Grego et al 2020 , Chertoprud et al 2020 , Chertoprud et al 2021 , Bikashvili et al 2021 , Neiber et al 2021 ), the knowledge about the diversity and distribution of freshwater molluscs is still far from being comprehensive ( Mumladze et al 2019 , Mumladze et al 2020 ). Most probably this is due to the absence of local taxonomic expertise during the last 50 years.…”

Section: Introductionmentioning

confidence: 99%

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Species diversity and DNA barcode library of freshwater Molluscs of South Caucasus

Bikashvili¹,

Kachlishvili²,

Japoshvili³

et al. 2022

BDJ

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This study provides the first attempt to investigate the molecular diversity of South Caucasian freshwater molluscs (Mollusca, Gastropoda) and lay down the first bricks to build up a DNA-barcode library. In total, 289 COI barcode sequences were obtained from 33 morpho-species belonging to 24 molluscan genera and 10 families that represent nearly 30% of known freshwater molluscan diversity of the South Caucasus region. DNA barcodes were analysed by means of the Barcode Index Number (BIN) and the other tools available in BOLD Systems. Results showed that the knowledge of freshwater molluscs diversity in the South Caucasus is far from comprehensive. For the studied 33 morpho-species, 289 barcodes were clustered into 40 BINs, from which unique BINs were defined for 12 species and five species were characterised with more than a single BIN. From the studied taxa, 60% were characterised larger than 2.2% sequence divergence indicating high genetic variation or cryptic diversity. Within our limited taxonomic coverage, we found one new species for the Republic of Georgia (Galba schirazensis) and at least three undescribed species belonging to the genera Stagnicola, Segmentina and Anisus. Uniqueness and high molecular diversity of the studied species emphasise the need for further intensive morphological and molecular investigations of the South Caucasian freshwater molluscan fauna.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Species diversity and DNA barcode library of freshwater Molluscs of South Caucasus

Bikashvili¹,

Kachlishvili²,

Japoshvili³

et al. 2022

BDJ

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“…At the same time, the Caucasus is the second region of the Western Palearctic (after the Balkan Peninsula) in term of karst area size, variety of landscapes and climatic conditions (e.g., Myers et al, 2000;Krever et al, 2001). Since 2010, recent biospeleological studies in the Crimean Peninsula, the Russian Caucasus and the adjacent regions of Abkhazia have focused mainly on the diversity and ecology of the diplopods (Golovatch, 2011;Golovatch, Chumachenko, 2013;Golovatch et al, 2016;Antić, Makarov, 2016;Antić et al, 2018;Antić, Reip, 2020), cave carabid beetles (Belousov, Koval, 2009Giachino, 2011;Reboleira, Ortuno, 2014) and arachnids (Tchemeris, 2013), cave shrimps (Marin, Sokolova, 2014;Marin, 2017Marin, , 2018Marin, , 2019Marin, , 2020Marin, Turbanov, 2021), crangonyctid (Sidorov, 2015) and gammarid amphipods (Sidorov et al, 2015a(Sidorov et al, , b, 2018Sidorov, 2016;Sidorov, Samokhin, 2016), woodlice (Gongalsky, Taiti, 2014;Turbanov, Gongalsky, 2016), springtails (Collembola) (Jordana et al, 2012;Vargovitsh, 2012Vargovitsh, , 2013, false scorpions (Kolesnikov, Turbanov, 2020), stygobiotic gastropods (Vinarski et al, 2014;Grego et al, 2017Grego et al, , 2020Vinarski, Palatov, 2019;Chertoprud et al, 2020Chertoprud et al, , 2021 and some other subterranean animals (e.g.,…”

Section: Introductionmentioning

confidence: 99%

Euxinian relict amphipods of the Eastern Paratethys in the subterranean fauna of coastal habitats of the Northern Black Sea region

2021

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The article presents the first insight into the diversity and distribution of the relatively small Niphargus "tauricus" ingroup of the "stygius" species group (Crustacea: Amphipoda: Niphargidae) living in the coastal caves/springs of Dobrogea in Romania, the Crimean Peninsula and the south-western foothills of the Caucasus Mountains. Six species, namely Niphargus utrishensis Marin et Palatov sp.n., N. novorossicus Marin et Palatov sp.n., N. alisae Marin, Krylenko et Palatov sp.n., N. ashamba Marin, Krylenko et Palatov sp.n., N. malakhovi Marin et Palatov sp.n. and N. dederkoyi Marin et Palatov sp.n. are described from the Black Sea coastal foothills of the south-western part of the Caucasus Mountains. Crimean N. tauricus Birštein, 1964 is re-described based on topotypic material.Morphological diagnoses and descriptions for all species of the "tauricus" ingroup as well as the key for their identification are presented. Aside from the morphological comparisons, DNA barcode (COI mtDNA gene marker) is employed for their identification. It is assumed that these species are Euxinian relicts of the Eastern Paratethys and were settled in their current habitats at the end of the Miocene at least 5 Mya. According to the data obtained, the related species of the ingroup are confined to the same mountain ridge, which suggests that the settlement occurred by several "waves". At the same time, we suppose that the modern species distribution is shaped rather by the uplift of Caucasian coastal mountain ridges and karst fragmentation occurred during the the last 2-3 Mya (since Late Pliocene -Early Pleistocene) than the fluctuation of the sea level. Because these animals are not able to disperse actively, we believe that these unique ancient genetic lineages (species) and their biotopes (underground water habitats) are in need of especial protection.

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Macrozoobenthos Communities of Springs and Streams of the Eastern Circum-Pontic Region

Palatov

Чертопруд

2020

Inland Water Biol

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Revealing the stygobiont and crenobiont Mollusca biodiversity hotspot in Caucasus: Part II. Sitnikovia gen. nov., a new genus of stygobiont microsnails (Gastropoda: Hydrobiidae) from Georgia

Cited by 9 publications

References 8 publications

Species diversity and DNA barcode library of freshwater Molluscs of South Caucasus

Species diversity and DNA barcode library of freshwater Molluscs of South Caucasus

Euxinian relict amphipods of the Eastern Paratethys in the subterranean fauna of coastal habitats of the Northern Black Sea region

Macrozoobenthos Communities of Springs and Streams of the Eastern Circum-Pontic Region

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