BARTONIČKA, Tomáš, Zdeněk ŘEHÁK a Jiří GAISLER. Can pipistrelles, Pipistrellus pipistrellus (Schreber, 1774) and Pipistrellus pygmaeus (Leach, 1825), foraging in a group, change parameters of their signals ? Journal of Zoology. London: The Zoological Society of London, 2007, roč. 272, č. 2, s. 194-201. ISSN 0952-8369. |
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@article{706344, author = {Bartonička, Tomáš and Řehák, Zdeněk and Gaisler, Jiří}, article_location = {London}, article_number = {2}, keywords = {Pipistrellus pipistrellus P. pygmaeus echolocation in the field and laboratory monospecific and species-mixed groups}, language = {eng}, issn = {0952-8369}, journal = {Journal of Zoology}, title = {Can pipistrelles, Pipistrellus pipistrellus (Schreber, 1774) and Pipistrellus pygmaeus (Leach, 1825), foraging in a group, change parameters of their signals ?}, volume = {272}, year = {2007} }
TY - JOUR ID - 706344 AU - Bartonička, Tomáš - Řehák, Zdeněk - Gaisler, Jiří PY - 2007 TI - Can pipistrelles, Pipistrellus pipistrellus (Schreber, 1774) and Pipistrellus pygmaeus (Leach, 1825), foraging in a group, change parameters of their signals ? JF - Journal of Zoology VL - 272 IS - 2 SP - 194-201 EP - 194-201 PB - The Zoological Society of London SN - 09528369 KW - Pipistrellus pipistrellus P. pygmaeus echolocation in the field and laboratory monospecific and species-mixed groups N2 - Echolocation behaviour and the structure of calls of Pipistrellus pygmaeus and P. pipistrellus were studied using a time expansion bat detector. Echolocation signals were recorded in the field in south-eastern Moravia and northern Bohemia (Czech Republic) and in an ad hoc experimental laboratory. For each of the species, multivariate analyses of variance indicated significant differences in calls produced inside the experimental room and in the open. Paired T-test and MANOVA were also used to reveal influences of inter-individual contacts in each of the cryptic species on the spectral patterns of call variables. Differences were found in the spectral variables of echolocation calls of an individual flying in the room alone and in a group of conspecifics. The possibility that bats use their flexibility to avoid mutual disturbances of echolocation calls was tested. We found that bats flying in a group modify the parameters of their echolocation signals according to the presence of other individuals of the same species. These differences can indicate jamming avoidance and recognition of own echoes. However, they did not change the parameters if individuals of another species were present. Social calls are more numerous when bats fly in a species-mixed group than in a monospecific group. ER -
BARTONIČKA, Tomáš, Zdeněk ŘEHÁK a Jiří GAISLER. Can pipistrelles, Pipistrellus pipistrellus (Schreber, 1774) and Pipistrellus pygmaeus (Leach, 1825), foraging in a group, change parameters of their signals ? \textit{Journal of Zoology}. London: The Zoological Society of London, 2007, roč.~272, č.~2, s.~194-201. ISSN~0952-8369.
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