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  1. AU="Caspers, Max"
  2. AU="Sevgi Kosaci Akdeniz"
  3. AU="Weingarten-Arams, J S"
  4. AU="Malinge, M C"
  5. AU=Rajewsky Nikolaus
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  1. Article: Sharing taxonomic expertise between natural history collections using image recognition

    Greeff, Michael / Caspers, Max / Kalkman, Vincent / Willemse, Luc / Sunderland, Barry Dermot / Bánki, Olaf / Hogeweg, Laurens

    Research Ideas and Outcomes. 2022 Mar. 01, v. 8

    2022  

    Abstract: Natural history collections play a vital role in biodiversity research and conservation by providing a window to the past. The usefulness of the vast amount of historical data depends on their quality, with correct taxonomic identifications being the ... ...

    Abstract Natural history collections play a vital role in biodiversity research and conservation by providing a window to the past. The usefulness of the vast amount of historical data depends on their quality, with correct taxonomic identifications being the most critical. The identification of many of the objects of natural history collections, however, is wanting, doubtful or outdated. Providing correct identifications is difficult given the sheer number of objects and the scarcity of expertise. Here we outline the construction of an ecosystem for the collaborative development and exchange of image recognition algorithms designed to support the identification of objects. Such an ecosystem will facilitate sharing taxonomic expertise among institutions by offering image datasets that are correctly identified by their in-house taxonomic experts. Together with openly accessible machine learning algorithms and easy to use workbenches, this will allow other institutes to train image recognition algorithms and thereby compensate for the lacking expertise.
    Keywords biodiversity ; data collection ; ecosystems ; natural history ; research
    Language English
    Dates of publication 2022-0301
    Publishing place Pensoft Publishers
    Document type Article
    ZDB-ID 2833254-4
    ISSN 2367-7163
    ISSN 2367-7163
    DOI 10.3897/rio.8.e79187
    Database NAL-Catalogue (AGRICOLA)

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  2. Article ; Online: The Oracle of Delphia molecular phylogenetic approach to Greek Cordulegaster Leach in Brewster, 1815 (Odonata: Anisoptera: Cordulegastridae).

    Schneider, Thomas / Vierstraete, Andy / Ikemeyer, Dietmar / VAN Pelt, Gert Jan / Caspers, Max / Mller, Ole / Dumont, Henri J

    Zootaxa

    2022  Volume 5125, Issue 2, Page(s) 182–204

    Abstract: Taxonomy of the genus Cordulegaster Leach in Brewster, 1815 in Greece is not completely understood. The taxonomic status of the subspecies C. helladica buchholzi (Lohmann, 1993), C. helladica kastalia (Lohmann, 1993), and C. heros pelionensis ... ...

    Abstract Taxonomy of the genus Cordulegaster Leach in Brewster, 1815 in Greece is not completely understood. The taxonomic status of the subspecies C. helladica buchholzi (Lohmann, 1993), C. helladica kastalia (Lohmann, 1993), and C. heros pelionensis Theischinger, 1979 was still unclear. We applied a molecular genetic approach using sequences of mitochondrial and nuclear DNA fragmentscytochrome c oxidase I (COI) and Internal Transcribed Spacer 1 (ITS1). This approach revealed that specimens presently assigned to C. heros pelionensis should be considered as conspecific to the nominate subspecific taxon making C. heros a monotypic species. Two major monophyletic lines were found within the Greek representatives of the species grouped around C. bidentata Selys, 1843: the clade of the European endemic C. bidentata and the clade composed of three species: C. helladica (Lohmann, 1993), C. buchholzi (stat. nov., raised to species level), and C. insignis Schneider, 1845. Cordulegaster helladica is restricted to the Peloponnese. Cordulegaster buchholzi is not restricted to the Cyclades as previously thought, but widespread from the Cyclades over the island Euboea to south-east mainland Greece reaching in the west near Mount Parnassos, where it hybridize with C. bidentata. Hybridization between C. bidentata and C. buchholzi was detected at the Castalian Spring, where in ancient times the Oracle of Delphi was located, and some kilometres east of the Castalian Spring. These hybrids had been formerly named C. helladica kastalia. In the case of C. insignis montandoni St. Quentin, 1971 we have investigated specimens some kilometres away from the type locality in Romania, which all revealed hybrids between C. bidentata and C. insignis. However, we do not know if specimens phenotypically looking like C. insignis from further west in the SE Balkans represent isolated population of C. insignis within the range of C. bidentata or belong to a broader hybrid zone between C. bidentata and C. insignis.
    MeSH term(s) Animals ; Dipterocarpaceae ; Greece ; Odonata ; Phylogeny
    Language English
    Publishing date 2022-04-08
    Publishing country New Zealand
    Document type Journal Article
    ISSN 1175-5334
    ISSN (online) 1175-5334
    DOI 10.11646/zootaxa.5125.2.5
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Taxonomic Revision of Eastern Part of Western Palaearctic Cordulegaster Using Molecular Phylogeny and Morphology, with the Description of Two New Species (Odonata: Anisoptera: Cordulegastridae)

    Schneider, Thomas / Vierstraete, Andy / Müller, Ole / van Pelt, Gert Jan / Caspers, Max / Ikemeyer, Dietmar / Snegovaya, Nataly / Dumont, Henri J.

    Diversity. 2021 Dec. 15, v. 13, no. 12

    2021  

    Abstract: Taxonomy of the genus Cordulegaster Leach in Brewster, 1815 in the Eastern part of the Western Palaearctic is poorly resolved. A two-step approach was applied: sequences of mitochondrial and nuclear DNA fragments were used to sort specimens; poorly known ...

    Abstract Taxonomy of the genus Cordulegaster Leach in Brewster, 1815 in the Eastern part of the Western Palaearctic is poorly resolved. A two-step approach was applied: sequences of mitochondrial and nuclear DNA fragments were used to sort specimens; poorly known or new taxa with their phenotypic variation were described. The existence of two traditional groups (boltonii- and bidentata-group) was confirmed. Cordulegaster coronata Morton, 1916, however, belongs to a different group. Molecular-analysis supported three known and one new species (C. heros Theischinger, 1979, C. picta Selys, 1854, C. vanbrinkae Lohmann, 1993, and C. kalkmani sp. nov.) in the boltonii-group. In the bidentata-group, all specimens from West-Turkey belonged to C. insignis Schneider, 1845, all specimens further east to a complex of four closely related species, which we name charpentieri-complex (C. amasina Morton, 1916, stat. rev., C. mzymtae Bartenev, 1929 C. charpentieri (Kolenati, 1846), stat. rev. and C. cilicia sp. nov.). The following taxa: C. insignis nobilis Morton, 1916, syn. nov., C. nachitschevanica Skvortsov and Snegovaya, 2015, syn. nov. C. plagionyx Skvortsov and Snegovaya, 2015, syn. nov. and the Caucasian subspecies C. insignis lagodechica Bartenev, 1930, syn. nov., were synonymized with C. charpentieri. Finally, we provide a key for all Western Palaearctic Cordulegaster.
    Keywords Cordulegastridae ; Palearctic region ; mitochondria ; new species ; nuclear genome ; phenotypic variation ; phylogeny ; taxonomic revisions
    Language English
    Dates of publication 2021-1215
    Publishing place Multidisciplinary Digital Publishing Institute
    Document type Article
    ZDB-ID 2518137-3
    ISSN 1424-2818
    ISSN 1424-2818
    DOI 10.3390/d13120667
    Database NAL-Catalogue (AGRICOLA)

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