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Social behaviour and ecology of bats of the genus Pipisttrellus
Jahelková, Helena ; Horáček, Ivan (advisor) ; Řehák, Zdeněk (referee) ; Červený, Jaroslav (referee)
43 Summary of results of presented research Since discrimination of two cryptic species inside Pipistrellus pipistrellus s.l based on echolocation calls (Jones & van Parijs 1993), social calls (Barlow & Jones 1997), and molecular data (Barratt et al. 1997), the genus Pipistrellus have been studied intensively. The mainstream of my research were reproduction strategies and vocalization behaviour of Nathusius's pipistrelle (Pipistrellus nathusii). It is a small European insectivorous species, which is known for his migratory behaviour. The dominant mating system is resource-defence polygyny. Males vocalize during flight (songflight) and from entrances of their day roosts (sedentary display). Advertising calls occur during whole active season, but they considerable increase during mating season. Males show strong fidelity to their mating roosts whereas females are fixed to maternity colonies (Schmidt 1984, Rachwald 1992, Gerell-Lundberg & Gerell 1994, Furmankiewitz 2003, Petersons 2004). This species exhibits variability in mating behaviour in different countries, probably due to long- distance migrations. In Czech Republic, the species was considered to be rare and only sporadic indications of reproduction were found (Hanák & Gaisler 1976, Šefrová & Buřič 1998). Main research area of my study was in South...
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