Checklist of the freshwater Cladocera (Crustacea: Branchiopoda) of South Korea

Water fleas (Crustacea: Cladocera) are among the most intensively studied freshwater invertebrates. However, ecologically important daphniids that live on the surface layer (neuston) remain taxonomically confused. Here we attempt to reconcile genetic and morphological information for the neustonic genus Scapholeberis Schoedler, 1858 (Cladocera: Daphniidae) and present the first revision of the Scapholeberis kingii species group. We analyzed new and existing mitochondrial DNA sequences (сytochrome C oxidase subunit I gene region) together with morphology for all but one of the known species of the neustonic daphniids. Morphological comparisons of available populations, belonging to the Scapholeberis kingii species group from several Australian, Asian and African localities, revealed, that they are almost identical according to parthenogenetic females. However, Australian populations can be reliably distinguished from Asian ones based on the morphology of gamogenetic females. Mitochondrial DNA data analyses revealed divergent lineages (>17% for the DNA barcoding COI region) for the three different species (Australia, Asia and Africa). Based on this set of data, we redescribed S. kingii Sars, 1888 from Australia, its terra typica, and described a new species, S. smirnovi sp.nov. from the Russian Far East, Korea and Japan. The status of populations from Ethiopia and the Republic of South Africa remained unclear, because in the African material and the putative type material, we found only parthenogenetic females. Our results provide an integrative revision of the S. kingii species group and improve the taxonomic scaffold used for barcoding and genomics for the remaining species groups in the daphniid genus Scapholeberis.

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“…3 ; Kotov et al, 2011 , p. 403, Table 1 ; Kotov, Jeong & Lee, 2012 , p. 58, Fig. 5 ; Jeong, Kotov & Lee, 2014 , p. 219.…”

Section: Resultsmentioning

confidence: 91%

Partial revision of the neustonic genusScapholeberisSchoedler, 1858 (Crustacea: Cladocera): decoding of the barcoding results

Garibian

Neretina

Taylor

et al. 2020

PeerJ

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“…Recently, evidence has emerged that the temperate Eastern Palearctic also represents a zone of cladoceran endemism 33 . Several endemics (or possible endemics) have been found here such as: Macrothrix pennigera Shen, Sung & Chen, 1961 in NE China 34 , Ilyocryptus uenoi Kotov & Tanaka, 2004 and Diaphanosoma kizakiensis Korovchinsky & Tanaka, 2013 in Japan 35,36 , Daphnia sinevi Kotov, Ishida & Taylor, 2006 and Chydorus irinae Smirnov & Sheveleva, 2010 in the Far East of Russia 37,38 and Pleuroxus jejuensis Jeong, Kotov & Lee, 2013 in Korea 39 . Genetic evidence has been important in the establishment of the special zoogeographic status of the Eastern Palearctic 24,25,27,28 .…”

Section: Introductionmentioning

confidence: 73%

Contrasting endemism in pond-dwelling cyclic parthenogens: the Daphnia curvirostris species group (Crustacea: Cladocera)

Kotov

Taylor

2019

Sci Rep

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Pond-dwelling cyclic parthenogens are often proposed to be highly vagile. However, the Holarctic biogeography of parthenogens has been hampered by very limited sampling in the eastern Palearctic. Here we examine the geographic boundaries, diversity, and connectivity across the Palearctic for the Daphnia curvirostris complex (Cladocera: Daphniidae). Nuclear (HSP90) and mitochondrial (ND2) sequence data supported the existence of five main clades (most of which corresponded to presumptive species) with one eastern Palearctic clade being novel to this study (the average mitochondrial genetic divergence from known species was 19.2%). D . curvirostris s.s. was geographically widespread in the Palearctic, with a population genetic signature consistent with postglacial expansion. The Eastern Palearctic had local nine endemic species and/or subclades (other Holarctic regions lacked more than one endemic subclade). Even though several endemic species appeared to have survived Pleistocene glaciation in the eastern Palearctic, much of the Palearctic has been recolonized by D . curvirostris s.str. from a Western Palearctic refugium. A disjunct population in Mexico also shared its haplotypes with D . curvirostris s.str., consistent with a recent introduction. The only apparently endemic North American lineage was detected in a thermally disturbed pond system in northwestern Alaska. Our results for pond-dwelling cyclic parthenogens further support the hypothesis that the Eastern Palearctic is a diversity hotspot for freshwater invertebrates.

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“…One of these species reported from many continents is Bosminopsis deitersi Richard, 1895 (Cladocera: Bosminidae). After the rst description of B. deitersi from La Plata [10], the species was found in many tropical regions [11][12][13][14][15][16][17][18][19][20] and temperate [21][22][23][24][25][26][27][28][29][30]. Citing minor morphological differences from B. deitersi (see checklist below), several related taxa were described from different regions.…”

Section: Introductionmentioning

confidence: 99%

One More “Living Fossil”: Mesozoic Lineage Differentiation, Morphological Stasis and Weak Phylogeographic Structure in Eurasia in the Bosminopsis Deitersi Group (Crustacea: Cladocera: Bosminidae)

Garibian

Карабанов

Neretina

et al. 2020

Preprint

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Background: Water fleas (Crustacea: Cladocera) of the Family Bosminidae have been studied since the founding of paleolimnology and freshwater ecology. However, one species, Bosminopsis deitersi, stands out for its exceptional multicontinental range and broad ecological requirements. Results: Here we use an integrated morphological and multilocus genetic approach to to address the species problem in B. deitersi. We analyzed 32 populations of B. deitersi s. lat. Two nuclear and two mitochondrial loci were used to carry out the bGMYC, mPTP and STACEY algorithms for species delimitation. Detailed morphological study was also carried out across continents. The evidence indicated a widely distributed cryptic species in the Old World (Bosminopsis zernowi) that is genetically divergent from B. deitersi s.str. We revised the taxonomy and redescribed the species in this complex. Our sampling indicated that B. zernowi had weak genetic differentiation across its range. A molecular clock and biogeographic analysis with fossil calibrations suggested a Mesozoic origin for the Bosminopsis deitersi group. Conclusions: Our evidence rejects the single species hypothesis for B. deitersi and is consistent with an ancient species group (potentially Mesozoic) that shows marked morphological conservation. The family Bosminidae, then, has examples of both rapid morphological evolution (Holocene Bosmina), and morphological stasis (Bosminopsis).

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Checklist of the freshwater Cladocera (Crustacea: Branchiopoda) of South Korea

Cited by 25 publications

References 39 publications

Partial revision of the neustonic genusScapholeberisSchoedler, 1858 (Crustacea: Cladocera): decoding of the barcoding results

Partial revision of the neustonic genusScapholeberisSchoedler, 1858 (Crustacea: Cladocera): decoding of the barcoding results

Contrasting endemism in pond-dwelling cyclic parthenogens: the Daphnia curvirostris species group (Crustacea: Cladocera)

One More “Living Fossil”: Mesozoic Lineage Differentiation, Morphological Stasis and Weak Phylogeographic Structure in Eurasia in the Bosminopsis Deitersi Group (Crustacea: Cladocera: Bosminidae)

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