Mating of Myotis capaccinii (Bonaparte, 1827) and other interesting autumn bat observations in the cave Rivčja jama (central Slovenia)

Abstract

Rivčja jama in central Slovenia is a well researched bat summer roost; however, the autumn composition of its bat fauna is still poorly known. Therefore, we conducted mistnetting in front of the cave on 28. 9. 2011. We caught five bat species; most interesting among them were long-fingered bat (Myotis capaccinii) and lesser mouse-eared bat (M. oxygnathus), both otherwise rarely recorded in central and eastern Slovenia. Mistnets captures, together with visual observation, also confirmed mating of M. capaccinii in the cave.Rivčja jama je dobro raziskano poletno zatočišče netopirjev, medtem ko je jesenska sestava netopirske favne manj poznana. Zato smo 28. 9. 2011 pred vhodom jame opravili mreženje. Ujeli smo 5 vrst netopirjev, od katerih sta bili najbolj zanimivi v osrednji in vzhodni Sloveniji sicer redko zabeleženi vrsti: dolgonogi netopir (Myotis capaccinii) in ostrouhi netopir (M. oxygnathus). Glede na vmrežene dolgonoge netopirje in opazovanje v jami sklepamo, da je jama tudi parišče te vrste.