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Mammalian Biology

, Volume 68, Issue 6, pp 341–350 | Cite as

Spatio-temporal utilisation of roosts by the parti-coloured bat Vespertilio murinus L., 1758 in Switzerland

  • C. JabergEmail author
  • J.-D. Blant
Original investigation

Abstract

The spatial distribution of roosts in relation to foraging habitats has never been investigated for Vespertilio murinus and the nocturnal roosts used by this species remain unknown. In order to improve knowledge of the species’ ecology and to provide tools for its conservation, we mapped each known day roost of a breeding population located at the western limits of the species’ distribution and measured the shortest distance between the roosting sites and the foraging habitats. We also radio-tracked 7 females in different reproductive states in order to identify, to quantify the utilisation and to assess the biological importance of their nocturnal roosts. Our results revealed that the day roosts were located close to a large lake and that the bats roosted mainly in trees of a riparian forest during the night. Implications for the conservation of this bat species are discussed.

Keywords

Chiroptera ecomorphology foraging phenology conservation 

Raum-zeitliche Quartiernutzung durch die Zweifarbfledermaus Vespertilio murinus in der Schweiz

Zusammenfassung

Die räumliche Verteilung von Quartieren in Abhängigkeit der Jagdhabitate wurde bisher bei Vespertilio murinus nicht untersucht und die während der Nacht genutzten Quartiere der Art blieben unbekannt. Um die Kenntnisse der Ökologie dieser Art zu erweitern und Daten für deren Schutz bereitzustellen, kartierten wir alle bekannten Tagesquartiere einer Reproduktionspopulation und maßen die kürzeste Distanz zwischen Quartier und Jagdhabitat. Sieben Weibchen in verschiedenen Reproduktionsphasen wurden radio-telemetrisch verfolgt, um ihre Nachtquartiere zu identifizieren, die Quartiernutzung zu quantifizieren und ihre biologische Bedeutung einzuschätzen. Unsere Resultate zeigen, daß die Quartiere von V murinus sich in der Nähe von Seen befinden. Radio-telemetrische Daten demonstrierten, daß diese schnelle „Luftfledermaus” in der Nacht hauptsächlich in Bäumen von Uferwäldern ruht. Folgerungen zum Schutz dieser Fledermausart werden diskutiert.

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Copyright information

© Deutsche Gesellschaft für Säugetierkunde 2003

Authors and Affiliations

  1. 1.Musée d’histoire naturelleNeuchâtel Bat CentreLa Chaux-de-FondsSwitzerland
  2. 2.GalsSwitzerland
  3. 3.Musée d’histoire naturelleLa Chaux-de-FondsSwitzerland

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