Neue Nachweise bi- und unisexueller "Populationen" von Megabunus lesserti (Opiliones: Phalangiidae) in den Nordostalpen

Bisexuals surrounded by all-female clones: new records of Megabunus lesserti (Opiliones: Phalangiidae) in the northeastern Alps

New data on the sex ratio of 16 populations of the endemic harvestman Megabunus lesserti Schenkel, 1927 in the northeastern Alps confirm the previously assumed pattern of geographic parthenogenesis. Bisexuals inhabit a s
New data on the sex ratio of 16 populations of the endemic harvestman Megabunus lesserti Schenkel, 1927 in the northeastern Alps confirm the previously assumed pattern of geographic parthenogenesis. Bisexuals inhabit a small area between the eastern margin of the Northern Calcareous Alps and the Ennstaler Alps, which was not covered by ice during the last (Würm) glaciations. Postglacially recolonized areas are occupied by parthenogenetic clones. Some all-female samples were found in close geographic proximity to bisexual populations. Apparently isolated occurrences at the western (Ammergau Alps) and southwestern (Carinthian) limits of the range proved to consist exclusively of females. A single male recorded in the Karwendel Mts. near Innsbruck is interpreted preferentially as a case of spanandry, being a fatherless "mistake" without any significant function. 
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Metadaten
Author:Christoph Muster, Bianca Böttcher, Christian Komposch, Barbara Knoflach
URN:urn:nbn:de:hebis:30-1141188
ISSN:1018-4171
Parent Title (German):Arachnologische Mitteilungen
Publisher:Arachnologische Ges.
Place of publication:Nürnberg
Document Type:Article
Language:German
Date of Publication (online):2009/12/21
Year of first Publication:2005
Publishing Institution:Univ.-Bibliothek Frankfurt am Main
Release Date:2009/12/21
Tag:Austria; faunistics; geographic parthenogenesis; harvestmen; spanandry
Issue:30
Pagenumber:5
First Page:20
Last Page:24
HeBIS PPN:221629467
Dewey Decimal Classification:590 Tiere (Zoologie)
Sammlungen:Sondersammelgebiets-Volltexte
Zeitschriften / Jahresberichte:Arachnologische Mitteilungen, Heft 30 (2005)
Journal: Dazugehörige Zeitschrift anzeigen
Licence (German):License Logo Veröffentlichungsvertrag für Publikationen

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