The Cincinna aliena (Westerlund 1877) species group in Russian water bodies (Heterobranchia: Valvatidae)

Sitnikova, T. Ya.; Prozorova, Larisa; Sharyi-ool, Mariana; Kiyashko, Pavel; Alexander, Kupchinsky

doi:10.1127/arch.moll/1869-0963/144/001-022

Cited by 5 publications

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Each taxon is provided with references (not synonymy in the strict sense), information on the type specimens and the type locality (or localities), images of type specimens (from the ZIN collection), a short diagnosis with data on shell size (according to Lindholm), distribution and habitats, and remarks (if needed). The review does not include the following species, information on which has already been published previously: Bithynia contortrix Lindholm, 1909 (Sitnikova and Bazova 2019), Valvata (Cincinna) sorensis abbreviata Lindholm, 1909 [= Valvata (Sibirovalvata) sorensis], Valvata (Cincinna) korotnevi Lindholm, 1909 [= Valvata (Sibirovalvata) korotnevi] (Sitnikova et al 2015), Valvata (Atropidina) lauta Lindholm, 1909 (= Me-вости раковины байкальских гастропод и на их неоднородное географическое распространение в озере. На основании сборов естествоиспытателя П. Михно Линдгольм описал два новых вида из оз.…”

Section: Introductionmentioning

confidence: 99%

Baikal gastropods described by W.A. Lindholm

Sitnikova¹

2019

zira

View full text Add to dashboard Cite

The molluscan fauna of Lake Baikal is currently known to comprise about 150 species of gastropods, of which approximately 70% are endemics. Baikal gastropods include 8 families: Baicaliidae, Benedictiidae, Bithyniidae (Caenogastropoda), Valvatidae (Heterobranchia), Acroloxidae, Planorbidae, Lymnaeidae and Physidae (Panpulmonata). By studying the samples collected during a three-year expedition supervised by A.A. Korotneff, professor of the Kiev University, W.A. Lindholm described 55 new species, varieties (= subspecies) and forms (= morphs) that belonged to all families of gastropods (except Physidae) living in Baikal and in the connected shallow water bodies (sors). Lindholm was the first to note a wide spectrum of conchological variability of Baikal gastropods and their heterogeneous geographic distribution in the lake. Using collection of naturalist Petr Mikhno, Lindholm described two new species from Lake Hövsgöl (= Khubsugul) in Mongolia that has the hydrological connection to Lake Baikal via the Selenga River. Despite more than a century of studying the gastropod fauna in lakes Baikal and Hövsgöl, some species and subspecies described by Lindholm are rare, with only a few specimens subsequently being reported, and some have never been found again. The present study is a brief review of 46 species, subspecies and morphs of gastropods described by Lindholm. The review includes photographs of type specimens, main synonyms and references, detailed information on the type localities, diagnoses, and information on distribution in Baikal including depth zones and substrate types. All type specimens (except those of one species) are well preserved and are currently stored in the collection of the Zoological Institute of the Russian Academy of Sciences (St. Petersburg).

show abstract

Section: Introductionmentioning

confidence: 99%

Baikal gastropods described by W.A. Lindholm

Sitnikova¹

2019

zira

View full text Add to dashboard Cite

show abstract

Trapped on the Roof of the World: taxonomic diversity and evolutionary patterns of Tibetan Plateau endemic freshwater snails (Gastropoda: Lymnaeidae: Tibetoradix)

et al. 2021

View full text Add to dashboard Cite

The high-elevation Tibetan Plateau (western China) is inhabited by a unique, though not particularly speciesrich, community of organisms. We explored the species content and evolutionary history of the Tibetan Plateau endemic freshwater snail genus Tibetoradix. Phylogenetic relationships within the genus were reconstructed based on available sequence data. We used a single-rate Poisson Tree Processes approach for species delimitation and compared putative species-level clades with already described taxa. We found that the genus consists of at least 6 species, of which we described 4 as new to science. Shell and soft body morphology was examined and the radula in Tibetoradix was described for the first time. Based on our findings, the diversification of the genus did not result in a prominent morphological differentiation and a number of species can be regarded as morphologically cryptic. Single species found in different drainage areas indicate relatively good passive dispersal abilities of the snails. The allopatric distribution of the species could result from competitive exclusion between them. The absence of Tibetoradix spp. outside the Tibetan Plateau could be explained by a scenario of an "evolutionary trap", where adaptations to high elevation conditions prevented the taxa from a successful colonization of lower elevations.

show abstract

Alien gastropods among endemics in the open waters of Lake Baikal

Sitnikova,

Khanaev,

Kovalenkova

et al. 2024

Zoologičeskij žurnal

View full text Add to dashboard Cite

Until the middle of the last century, the Palearctic-Siberian gastropod fauna that inhabited the ‘sors’ and small coves of the larger bays of Lake Baikal was similar in environmental factors to Siberian water-bodies. Endemic species occupied open areas of the lake, with cold water, strong storms, and other specific environmental conditions. Based on morpho-anatomical characters and genetic distances of the COI mtDNA gene fragment between related species, five alien species were identified from open Baikal waters. In addition to the previously found Radix auricularia (Linnaeus, 1758), there were Radix cf. zazurniensis (Mozley 1934) (Lymnaeidae), Cincinna sorensis (Dybowski 1886) and C. cf. korotnevi Lindholm 1909 (Valvatidae), as well as Gyraulus cf. acronicus (Férussac 1807) (Planorbidae). A schematic map of the records of the alien species in the open littoral of the lake is presented, based on material taken by expeditions carried out in 1993–2023, as well as photographs of the shells and reproductive organs for some of the alien species, and information on coexisting endemic species of gastropods are given. We found albino individuals among R. auricularia and a few snails of R. cf. zazurniensis with afallic copulatory organs. Possible reasons for the invasion of the alien species and possible invaders into the open waters of Baikal are discussed.

show abstract

The Cincinna aliena (Westerlund 1877) species group in Russian water bodies (Heterobranchia: Valvatidae)

Cited by 5 publications

References 0 publications

Baikal gastropods described by W.A. Lindholm

Baikal gastropods described by W.A. Lindholm

Trapped on the Roof of the World: taxonomic diversity and evolutionary patterns of Tibetan Plateau endemic freshwater snails (Gastropoda: Lymnaeidae: Tibetoradix)

Alien gastropods among endemics in the open waters of Lake Baikal

Contact Info

Product

Resources

About