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  • 1
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    Mollusc species from the Pontocaspian region – an expert opinion list (2019)
    In:  Various articles (1313–2970) vol.827 (2019) p.31
    Details
    Publication Date: 2019-10-22
    Description: Defining and recording the loss of species diversity is a daunting task, especially if identities of species under threat are not fully resolved. An example is the Pontocaspian biota. The mostly endemic invertebrate faunas that evolved in the Black Sea – Caspian Sea – Aral Sea region and live under variable salinity conditions are undergoing strong change, yet within several groups species boundaries are not well established. Collection efforts in the past decade have failed to produce living material of various species groups whose taxonomic status is unclear. This lack of data precludes an integrated taxonomic assessment to clarify species identities and estimate species richness of Pontocaspian biota combining morphological, ecological, genetic, and distribution data. In this paper, we present an expert-working list of Pontocaspian and invasive mollusc species associated to Pontocaspian habitats. This list is based on published and unpublished data on morphology, ecology, anatomy, and molecular biology. It allows us to (1) document Pontocaspian mollusc species, (2) make species richness estimates, and (3) identify and discuss taxonomic uncertainties. The endemic Pontocaspian mollusc species richness is estimated between 55 and 99 species, but there are several groups that may harbour cryptic species. Even though the conservation status of most of the species is not assessed or data deficient, our observations point to deterioration for many of the Pontocaspian species.
    Keywords: Aral Sea ; bivalves ; Black Sea ; Caspian Sea ; conservation ; gastropods ; nomenclature ; taxonomy ; Marie Skłodowska-Curie Actions ; Action: H2020-MSCA-ITN-2014 ; PRIDE ; Grant agreement no: 642973
    Repository Name: National Museum of Natural History, Netherlands
    Type: Article / Letter to the editor
    Format: application/pdf
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 2
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    Unknown
    A revision of the extant species of Theodoxus (Gastropoda, Neritidae) in Asia, with the description of three new species (2020)
    In:  Various articles (1860–0743) vol.96 (2020) p.25
    Details
    Publication Date: 2020-04-15
    Description: Asia contains a high species diversity of the freshwater gastropod genus Theodoxus. Recent molecular and morphological reviews of this diversity have uncovered a number of yet undescribed species while suggesting the urgent revision of several others. Moreover, some of these studies have indicated a number of species previously not recorded for this continent. Despite the advancements, a taxonomic revision and an update on the distribution of Theodoxus spp. in Asia is still pending. Here, we construct the most robust phylogeny of Theodoxus up to now and review original descriptions, type material, recent taxonomic revisions, compendia, and species lists to provide a comprehensive checklist of all known extant Asian Theodoxus spp. Our checklist also provides descriptions for three recently discovered and yet undescribed species (Theodoxus gurur Sands & Glöer, sp. nov., Theodoxus wesselinghi Sands & Glöer, sp. nov., and Theodoxus wilkei Sands & Glöer, sp. nov.), as well as shows the need to synonymise several previously described morphospecies. The present revision recognizes 14 extant Theodoxus spp. for Asia. Some of these species are widespread, while others are endemic to just a single location. Based on the revised and new distribution data, we provide updates and new assessments of species conservation statuses.
    Keywords: checklist ; conservation ; morphology ; Palearctic ; phylogenetics ; taxonomy ; Marie Skłodowska-Curie Actions ; action: H2020-MSCA-ITN-2014 ; PRIDE ; grant agreement No: 642973
    Repository Name: National Museum of Natural History, Netherlands
    Type: Article / Letter to the editor
    Format: application/pdf
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 3
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    Unknown
    Mollusc species from the Pontocaspian region \xe2\x80\x93 an expert opinion list (2019)
    In:  ZooKeys vol. 827, pp. 31-124
    Details
    Publication Date: 2024-01-12
    Description: Defining and recording the loss of species diversity is a daunting task, especially if identities of species under threat are not fully resolved. An example is the Pontocaspian biota. The mostly endemic invertebrate faunas that evolved in the Black Sea \xe2\x80\x93 Caspian Sea \xe2\x80\x93 Aral Sea region and live under variable salinity conditions are undergoing strong change, yet within several groups species boundaries are not well established. Collection efforts in the past decade have failed to produce living material of various species groups whose taxonomic status is unclear. This lack of data precludes an integrated taxonomic assessment to clarify species identities and estimate species richness of Pontocaspian biota combining morphological, ecological, genetic, and distribution data. In this paper, we present an expert-working list of Pontocaspian and invasive mollusc species associated to Pontocaspian habitats. This list is based on published and unpublished data on morphology, ecology, anatomy, and molecular biology. It allows us to (1) document Pontocaspian mollusc species, (2) make species richness estimates, and (3) identify and discuss taxonomic uncertainties. The endemic Pontocaspian mollusc species richness is estimated between 55 and 99 species, but there are several groups that may harbour cryptic species. Even though the conservation status of most of the species is not assessed or data deficient, our observations point to deterioration for many of the Pontocaspian species.
    Keywords: Aral Sea ; bivalves ; Black Sea ; Caspian Sea ; conservation ; gastropods ; nomenclature ; taxonomy ; Marie Sk\xc5\x82odowska-Curie Actions ; Action: H2020-MSCA-ITN-2014 ; PRIDE ; Grant agreement no: 642973
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
    Format: application/pdf
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 4
    facet.materialart.
    Unknown
    A revision of the extant species of Theodoxus (Gastropoda, Neritidae) in Asia, with the description of three new species (2020)
    In:  Zoosystematics and Evolution vol. 96, pp. 25-66
    Details
    Publication Date: 2024-01-12
    Description: Asia contains a high species diversity of the freshwater gastropod genus Theodoxus. Recent molecular and morphological reviews of this diversity have uncovered a number of yet undescribed species while suggesting the urgent revision of several others. Moreover, some of these studies have indicated a number of species previously not recorded for this continent. Despite the advancements, a taxonomic revision and an update on the distribution of Theodoxus spp. in Asia is still pending. Here, we construct the most robust phylogeny of Theodoxus up to now and review original descriptions, type material, recent taxonomic revisions, compendia, and species lists to provide a comprehensive checklist of all known extant Asian Theodoxus spp. Our checklist also provides descriptions for three recently discovered and yet undescribed species (Theodoxus gurur Sands & Gl\xc3\xb6er, sp. nov., Theodoxus wesselinghi Sands & Gl\xc3\xb6er, sp. nov., and Theodoxus wilkei Sands & Gl\xc3\xb6er, sp. nov.), as well as shows the need to synonymise several previously described morphospecies. The present revision recognizes 14 extant Theodoxus spp. for Asia. Some of these species are widespread, while others are endemic to just a single location. Based on the revised and new distribution data, we provide updates and new assessments of species conservation statuses.
    Keywords: checklist ; conservation ; morphology ; Palearctic ; phylogenetics ; taxonomy ; Marie Sk\xc5\x82odowska-Curie Actions ; action: H2020-MSCA-ITN-2014 ; PRIDE ; grant agreement No: 642973
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
    Format: application/pdf
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    PAPER (OA)
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