Threatened amphibians in the former Soviet Union: the current situation and the main threats

Kuzmin, Sergius L.

doi:10.1017/s0030605300021359

Cited by 13 publications

(18 citation statements)

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“…In the west, it reaches the eastern edge of the Netherlands (Creemers and Van Delft 2009), the eastern part of Flanders in Belgium (Bauwens and Claus 1996), the western parts of Nordrhein-Westfalens and the south-east of Rheinland-Pflaz in Germany (Bitz et al 1996; Chmela and Kronshage 2011), the north-eastern side of France (particularly along the Rhine River, Eggert and Vacher 2012). In the north, it extends to northern Netherlands (Creemers and Van Delft 2009), the North Sea coastline of Germany (Nöllert and Günther 1996) and Denmark, the south of Sweden, as well as the coastline of the Baltic Sea from Germany to Estonia, and eastward until it reaches P.vespertinus in Russia (Kuzmin 1999; Nyström et al 2007; Litvinchuk et al 2013; Sillero et al 2014). The contact zone with the latter is well delineated from the Kursk region in Russia to the Black Sea coast (Dufresnes et al 2019b).…”

Section: Resultsmentioning

confidence: 99%

Call a spade a spade: taxonomy and distribution of Pelobates, with description of a new Balkan endemic

Dufresnes¹,

Strachinis²,

Tzoras³

et al. 2019

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The genomic era contributes to update the taxonomy of many debated terrestrial vertebrates. In an accompanying work, we provided a comprehensive molecular assessment of spadefoot toads (Pelobates) using genomic data. Our results call for taxonomic updates in this group. First, nuclear phylogenomics confirmed the species-level divergence between the Iberian P.cultripes and its Moroccan relative P.varaldii. Second, we inferred that P.fuscus and P.vespertinus, considered subspecies until recently, feature partial reproductive isolation and thus deserve a specific level. Third, we evidenced cryptic speciation and diversification among deeply diverged lineages collectively known as Pelobatessyriacus. Populations from the Near East correspond to the Eastern spadefoot toad P.syriacus sensu stricto, which is represented by two subspecies, one in the Levant (P.s.syriacus) and the other in the rest of the range (P.s.boettgeri). Populations from southeastern Europe correspond to the Balkan spadefoot toad, P.balcanicus. Based on genetic evidence, this species is also polytypic: the nominal P.b.balcanicus inhabits the Balkan Peninsula; a new subspecies P.b.chloeaessp. nov. appears endemic to the Peloponnese. In this paper, we provide an updated overview of the taxonomy and distribution of all extant Pelobates taxa and describe P.b.chloeaessp. nov.

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Section: Resultsmentioning

confidence: 99%

Call a spade a spade: taxonomy and distribution of Pelobates, with description of a new Balkan endemic

Dufresnes¹,

Strachinis²,

Tzoras³

et al. 2019

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“…For the contemporary niche predictions, we used 1008 localities of H. japonica (Additional file 3), combining our sampling localities (Additional file 1), the Global Biodiversity Information Facility database [37], and published monitoring data [38, 39]. Duplicated localities were removed by ENMTools 1.3 [40].…”

Section: Methodsmentioning

confidence: 99%

Phylogeography reveals an ancient cryptic radiation in East-Asian tree frogs (Hyla japonica group) and complex relationships between continental and island lineages

et al. 2016

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BackgroundIn contrast to the Western Palearctic and Nearctic biogeographic regions, the phylogeography of Eastern-Palearctic terrestrial vertebrates has received relatively little attention. In East Asia, tectonic events, along with Pleistocene climatic conditions, likely affected species distribution and diversity, especially through their impact on sea levels and the consequent opening and closing of land-bridges between Eurasia and the Japanese Archipelago. To better understand these effects, we sequenced mitochondrial and nuclear markers to determine phylogeographic patterns in East-Asian tree frogs, with a particular focus on the widespread H. japonica.ResultsWe document several cryptic lineages within the currently recognized H. japonica populations, including two main clades of Late Miocene divergence (~5 Mya). One occurs on the northeastern Japanese Archipelago (Honshu and Hokkaido) and the Russian Far-East islands (Kunashir and Sakhalin), and the second one inhabits the remaining range, comprising southwestern Japan, the Korean Peninsula, Transiberian China, Russia and Mongolia. Each clade further features strong allopatric Plio-Pleistocene subdivisions (~2-3 Mya), especially among continental and southwestern Japanese tree frog populations. Combined with paleo-climate-based distribution models, the molecular data allowed the identification of Pleistocene glacial refugia and continental routes of postglacial recolonization. Phylogenetic reconstructions further supported genetic homogeneity between the Korean H. suweonensis and Chinese H. immaculata, suggesting the former to be a relic population of the latter that arose when the Yellow Sea formed, at the end of the last glaciation.ConclusionsPatterns of divergence and diversity were likely triggered by Miocene tectonic activities and Quaternary climatic fluctuations (including glaciations), causing the formation and disappearance of land-bridges between the Japanese islands and the continent. Overall, this resulted in a ring-like diversification of H. japonica around the Sea of Japan. Our findings urge for important taxonomic revisions in East-Asian tree frogs. First, they support the synonymy of H. suweonensis (Kuramoto, 1980) and H. immaculata (Boettger, 1888). Second, the nominal H. japonica (Günther, 1859) represents at least two species: an eastern (new taxon A) on the northern Japanese and Russian Far East islands, and a southwestern species (n. t. B) on southern Japanese islands and possibly also forming continental populations. Third, these continental tree frogs may also represent an additional entity, previously described as H. stepheni Boulenger, 1888 (senior synonym of H. ussuriensis Nikolskii, 1918). A complete revision of this group requires further taxonomic and nomenclatural analyses, especially since it remains unclear to which taxon the species-epitheton japonica corresponds to.Electronic supplementary materialThe online version of this article (doi:10.1186/s12862-016-0814-x) contains supplementary material, which is available to author...

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“…The Siberian salamander ( Salamandrella keyserlingii ) is one of the most widely distributed amphibian species globally ( Kuzmin, 1999 ), but in Japan, its distribution is limited to the Kushiro marsh ( Sato & Matsui, 2013 ) and Kamishihoro town ( Matsui et al, 2019 ) in Hokkaido, Japan. The Kushiro marsh has become increasingly dry in recent years due to development in the surrounding land ( Oki et al, 2005 ).…”

Section: Introductionmentioning

confidence: 99%

Projection range of eDNA analysis in marshes: a suggestion from the Siberian salamander (Salamandrella keyserlingii) inhabiting the Kushiro marsh, Japan

Takeshita

Terui²,

Ikeda³

et al. 2020

PeerJ

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Background Freshwater ecosystems are rapidly declining. The Siberian salamander (Salamandrella keyserlingii) which inhabits the Kushiro marsh in Hokkaido, Japan has lost some habitat due to human activity. There are many challenges associated with conventional monitoring methods, including cost, the need for specialist personnel, environmental impact, and ability to detect the presence of this species; thus, we investigated the feasibility of using environmental DNA (eDNA) analysis to detect its presence and identify its breeding grounds. Methods We performed tank experiments to confirm eDNA emission from egg sacs, larvae, and adult Siberian salamanders in the water. We also performed water sampling and visual observation of egg sacs in the Kushiro marsh during the end of the breeding season and the larval season. Results The tank experiments found eDNA emission from all growth stages. It also implied concentrated emissions just after spawning and after hatching, and limited emissions during the incubation phase in egg sacs. We also detected eDNA in the field, likely reflecting the distribution of egg sacs or larvae. Combining this data with visual observations, it was determined that the eDNA results from the field were best explained by the number of egg sacs within 7–10 m of the sampling point. Conclusions The results of this investigation show that the breeding sites and habitats of marshland species can successfully be monitored using eDNA analysis. They also suggest that the eDNA results from the marshes may reflect the biomass that is in close range to the sampling point. These results support the increased use of eDNA analysis in marshes and provide knowledge that could improve the interpretation of future results.

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Threatened amphibians in the former Soviet Union: the current situation and the main threats

Cited by 13 publications

References 0 publications

Call a spade a spade: taxonomy and distribution of Pelobates, with description of a new Balkan endemic

Call a spade a spade: taxonomy and distribution of Pelobates, with description of a new Balkan endemic

Phylogeography reveals an ancient cryptic radiation in East-Asian tree frogs (Hyla japonica group) and complex relationships between continental and island lineages

Projection range of eDNA analysis in marshes: a suggestion from the Siberian salamander (Salamandrella keyserlingii) inhabiting the Kushiro marsh, Japan

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