Freshwater Pearl mussels of the genus Margaritifera (Mollusca: Bivalvia) described as M. elongata (Lamarck, 1819) and M. borealis (Westerlund, 1871) should be classified with M. margaritifera (Linnaeus, 1758)

Sergeeva, I. S.; Bolotov, Ivan N.; Bespalaya, Yulia V.; Махров, А. А.; Bukhanova, A. L.; Artamonova, V. S.

doi:10.1134/s1062359008010160

Cited by 19 publications

(4 citation statements)

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“…Our study thus confirmed that high conchological variation, which was reported for the species more than 100 years ago [32,36] lacks taxonomic significance. A similar conclusion was made for freshwater pearl mussels of the genus Margaritifera [43,44].…”

Section: Morphological Variationsupporting

confidence: 79%

Beringian Freshwater Mussel Beringiana beringiana (Unionidae) in Northeast Asia

Bulakhova,

Makhrov,

Lazutkin

et al. 2023

Water

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The origin of the fauna of Beringia is a notable biogeographical puzzle. Large mussels of the genus Beringiana inhabit both Northeast Asia and the northwestern part of North America and thus provide an important model to investigate the paleobiogeography of Beringia and the past and current intercontinental species exchanges. Data on Beringiana distribution, morphology, genetics, and taxonomy are fragmentary or questionable. In this study, we summarized the data on its distribution in Northeast Asia, performed genetic analysis (cox1), and studied the variation in the shell morphology in samples from four isolated populations, including the putative sympatric species. Over ten large enclaves of Beringiana are currently known in Northeast Asia (east to the Verkhoyansk Range), mostly in the lower reaches of large rivers in northeastern Yakutia, Kamchatka, Magadan Oblast, and Khabarovsk Krai. These enclaves are far apart (several hundreds of kilometers) because the mussel is associated with muddy sand or pebbly sand bottom substrates and spreads through its glochidia, which are parasitic on the fish. Shell morphology can be highly variable even in a single population, overlapping the diagnoses of several Beringiana species (which are currently not recognized as valid). Our analysis of the cox1 sequence in four populations identified all individuals as B. beringiana. We evaluated the possible current and probable Late Pleistocene–Early Holocene freshwater and marine pathways of B. beringiana dispersal through the area of former Beringia, including the current intercontinental migration of glochidia on fish.

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Section: Morphological Variationsupporting

confidence: 79%

Beringian Freshwater Mussel Beringiana beringiana (Unionidae) in Northeast Asia

Bulakhova,

Makhrov,

Lazutkin

et al. 2023

Water

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“…Furthermore, a variety of old synonyms for several species and genera were resurrected as valid names using minute differences in the curvature of the shell frontal section 25,64,66 . However, the shell convexity is strongly influenced by habitat parameters and climatic factors and cannot be used as a diagnostic character 3,5,9,[26][27][28]31,35,38 . A growing body of research critically reassessing the comparatory method in and outside of Russia has discredited its usage for taxonomy, and the last "comparatory" species, Middendorffinaia alimovi (=M.…”

Section: Discussion Taxonomic Richness Of the Unionidae Fauna In Russmentioning

confidence: 99%

Integrative taxonomy, biogeography and conservation of freshwater mussels (Unionidae) in Russia

Bolotov

Kondakov

Konopleva

et al. 2020

Sci Rep

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freshwater mussels are ecosystem engineers and keystone species in aquatic environments. Unfortunately, due to dramatic declines this fauna is among the most threatened globally. Here, we clarify the taxonomy and biogeography of Russian Unionidae species based on the most comprehensive multi-locus dataset sampled to date. We revise the distribution and assess the conservation status for each species. This fauna comprises 16 native species from 11 genera and 4 tribes: Anodonta, Pseudanodonta (Anodontini); Amuranodonta, Beringiana, Buldowskia, Cristaria, Sinanodonta (cristariini); Middendorffinaia, Nodularia, Unio (Unionini); and Lanceolaria (Lanceolariini). no countrylevel endemic species are known in Russia, except for Buldowskia suifunica that may also occur in china. Sinanodonta woodiana, a non-native species, was introduced from china. Russia comprises the northern parts of Western and Eastern Palearctic subregions. The first subregion with six species encompasses a huge area from the western boundary of Russia to the Lena Basin in Siberia. the second subregion with 10 species covers the Amur Basin, rivers east of the Lena Basin, coastal basins of the Japan Sea, and the North Pacific Islands. The fauna of Russia primarily includes widespread generalist species that are here considered Least concern (Lc). However, Buldowskia suifunica and Sinanodonta lauta have restricted distributions and are assessed here as Vulnerable (VU) and endangered (en), respectively. Freshwater mussels (order Unionida) are ecologically and economically important aquatic animals 1 that are sensitive to water pollution, habitat loss, climate changes, and other negative anthropogenic and natural impacts 2-4. These animals are widely distributed throughout Russia, representing keystone taxa in various water bodies of European Russia, Siberia, and the Russian Far East (mainland, Sakhalin, and Kurile Archipelago) 5. However, freshwater mussels are not known to occur in the Polar Urals, Yamal and Taymyr peninsulas, Arctic Ocean

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“…By the beginning of the XXI century, as the result of usage of comparative method the number of North-Eastern European Unionidae increased to twenty seven species attributed to six genera (Table 1): Unio (four species); Tumidiana Servain 1882 (three species); Crassiana Servain 1882 (six species); Pseudanodonta Bourguignat 1876 (four species); Colletopterum Bourguignat 1880 (seven species); Anodonta (three species) [7]. By this time, some malacologists started to consider the comparative method improper for taxonomic studies of large bivalves [8,9]. According to Graf, the traditional species are regarded as a better description of actual diversity, but further revision is required [10].…”

Section: Introductionmentioning

confidence: 99%

“…Surprisingly, no systematic analysis of molecular data that could shed light on the validity of comparative species has yet been performed. Most of the recent attempts to estimate genetic differences between the comparative species of European Margaritifera [9,16,17], European Unio [18], Far East Russian Cristaria [19] and Nodularia [20] did not involve identification of comparative species by MCM. The identification was instead based only on measurements of the height and the width of the shell or the ratio of shell convexity to its maximum height, which does not allow to determine their taxonomy reliably [12,15].…”

Section: Introductionmentioning

confidence: 99%

The comparative and genetic methods for East European Unionidae taxonomy

Abdrakhmanov

Anisimova

Neretina

et al. 2018

Preprint

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Taxonomy of freshwater mussels from family Unionidae has been ambiguous for a long time. A number of methods used for their identification, including the so-called comparative method, are based on shell morphology. However, this morphology turned out to have a high level of within-species variation, and the shape of the shell of a specimen depends strongly on its environment and conditions of growth. For these reasons, the number of species recognized by the comparative method kept increasing. We applied both the comparative morphological method and methods of molecular genetics to address the taxonomy of Unionidae. We performed the comprehensive study of 70 specimens of Unionidae mussels collected from the River Ivitza, Volga basin. The specimens represented 14 comparative species, belonging to 4 comparative genera of Unionidae: Colletopterum, Pseudanodonta, Unio and Crassiana. Sequencing of the nuclear (ITS1) and mitochondrial (COI, 16S rDNA) genetic regions revealed 5 groups with high within-group genetic homogeneity separated from each other by long genetic distances. According to the comparison with the available sequences, these groups correspond to 3 Eastern European genera and 5 species: Anodonta anatina, Pseudanodonta complanata, Unio pictorum, Unio tumidus and Unio crassus. The results obtained indicate that the comparative method is inappropriate for the taxonomic analysis of East European Unionidae.

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Freshwater Pearl mussels of the genus Margaritifera (Mollusca: Bivalvia) described as M. elongata (Lamarck, 1819) and M. borealis (Westerlund, 1871) should be classified with M. margaritifera (Linnaeus, 1758)

Cited by 19 publications

References 1 publication

Beringian Freshwater Mussel Beringiana beringiana (Unionidae) in Northeast Asia

Beringian Freshwater Mussel Beringiana beringiana (Unionidae) in Northeast Asia

Integrative taxonomy, biogeography and conservation of freshwater mussels (Unionidae) in Russia

The comparative and genetic methods for East European Unionidae taxonomy

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