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  • Publication
    Accès libre
    Genomic evidence for three distinct species in the Erebia manto complex in Central Europe (Lepidoptera, Nymphalidae)
    (2023)
    Amanda Jospin
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    Yannick Chittaro
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    Daniel Bolt
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    David Demergès
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    Kevin Gurcel
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    Jürgen Hensle
    ;
    Andreas Sanchez
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    ;
    A problem to implement conservation strategies is that in many cases recognized taxa are in fact complexes of several cryptic species. Failure to properly delineate species may lead to misplaced priorities or to inadequate conservation measures. One such species complex is the yellow-spotted ringlet Erebia manto, which comprises several phenotypically distinct lineages, whose degree of genomic isolation has so far not been assessed. Some of these lineages are geographically restricted and thus possibly represent distinct units with conservation priorities. Using several thousand nuclear genomic markers, we evaluated to which degree the bubastis lineage from the Alps and the vogesiaca lineage from the Vosges, are genetically isolated from the widespread manto lineage. Our results suggest that both lineages are genetically as strongly differentiated from manto as other taxonomically well separated sibling species in this genus from each other, supporting a delineation of bubastis and vogesiaca as independent species. Given the restricted and isolated range of vogesiaca as well as the disjunct distribution of bubastis, our findings have significant implication for future conservation efforts on these formerly cryptic species and highlight the need to investigate the genomic identity within species complexes.
  • Publication
    Accès libre
    To bee or not to bee: The “raison d'etre” of toxic secondary compounds in the pollen of Boraginaceae
    (2020-5-1)
    Trunz, Vincent
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    Lucchetti, Matteo A.
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    Bénon, Dimitri
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    Dorchin, Achik
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    Desurmont, Gaylord A.
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    Kast, Christina
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    Glauser, Gaétan
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  • Publication
    Accès libre
    Agriculteurs, apiculteurs et chercheurs unis pour la sauvegarde des pollinisateurs
    (2019-11-1)
    Sutter, Louis
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    ;
    Buchwalder, Gerald
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    Caballé, Pierre
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    Dietemann, Vincent
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    Girardin, Olivier
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    ;
    Jacopin-Bucher, Eloise
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    Mayor, Pascal
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    Ménétrier, Vanessa
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    Varennes, Yann-David
  • Publication
    Métadonnées seulement
    Nests, Floral Preferences, and Immatures of the Bee Haetosmia vechti (Hymenoptera: Megachilidae: Osmiini)
    (2014-7-21)
    Gotlieb, Ariella
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    Pisanty, Gideon
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    Rozen, Jerome G, Gideon
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    Mueller, Andreas
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    ;
    Sedivy, Claudio
    ;
    Herein we describe the nests (including structure, closure, orientation, and depth of cells) of the bee Haetosmia vechti Peters found nesting in Rehovot, Israel. The nesting biology of H. vechti mirrors the ancestral nesting biology within the Osmia group of the Osmiini. Nests in sandy soil consist of an excavated burrow, ending below in a small cluster of vertical cells. The cells possess firm walls of masticated leaf pulp of Centaurea procurrens Spreng. and Heliotropium suaveolens M. Bieb., and are covered with pebbles and sand grains. The last larval instar and pupa of Haetosmia vechti are described, as is its cocoon. The "immature stages exhibit the basic features of megachilid bees, but tend to have a thinner body vestiture compared to other studied taxa. In addition, we report new information on and review published accounts concerning the pollen collecting behavior of the genus Haetosmia Popov, which contains three species. Pollen taken from scopal hairs of 68 females collected at 17 sites in Turkestan, Morocco, Israel, and the United Arab Emirates was identified as originating solely from Heliotropium L. (Boraginaceae), which strongly suggests that all three Haetosmia species are narrowly oligolectic on this plant genus. In females of all three species, the second segment of the labial palpus is densely covered with rather long, apically curved and capitate bristles, an adaptation to collect Heliotropium pollen from anthers that are hidden inside the narrow corolla tube. Similar pollen-harvesting bristles specifically adapted to exploit flowers of He/iotropium seem to have evolved independently a number of times on different continents, in bees of four families.