Detailed Information on Publication Record
2007
Can pipistrelles, Pipistrellus pipistrellus (Schreber, 1774) and Pipistrellus pygmaeus (Leach, 1825), foraging in a group, change parameters of their signals ?
BARTONIČKA, Tomáš, Zdeněk ŘEHÁK and Jiří GAISLERBasic information
Original name
Can pipistrelles, Pipistrellus pipistrellus (Schreber, 1774) and Pipistrellus pygmaeus (Leach, 1825), foraging in a group, change parameters of their signals ?
Name in Czech
Mohou netopýři druhu Pipistrellus pipistrellus (Schreber, 1774) and Pipistrellus pygmaeus (Leach, 1825), lovící ve skupině, měnit parametry signálů?
Authors
BARTONIČKA, Tomáš (203 Czech Republic, guarantor), Zdeněk ŘEHÁK (203 Czech Republic) and Jiří GAISLER (203 Czech Republic)
Edition
Journal of Zoology, London, The Zoological Society of London, 2007, 0952-8369
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
10600 1.6 Biological sciences
Country of publisher
United Kingdom of Great Britain and Northern Ireland
Confidentiality degree
není předmětem státního či obchodního tajemství
Impact factor
Impact factor: 1.516
RIV identification code
RIV/00216224:14310/07:00020097
Organization unit
Faculty of Science
UT WoS
000246623400009
Keywords in English
Pipistrellus pipistrellus P. pygmaeus echolocation in the field and laboratory monospecific and species-mixed groups
Tags
International impact, Reviewed
Změněno: 12/3/2008 15:32, doc. RNDr. Zdeněk Řehák, Ph.D.
V originále
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.
In Czech
Byly zjištěny rozdíly mezi frekvenčními parametry echolokačních signálů u jedinců stejného druhu lovících ve skupině. naopak rozdíly nebyly zjištěny, pokud ve skupině lovily druhy odlišné. Schopnost posunu frekvenčních parametrů netopýrům zajišťuje minimalizaci v chybném rozeznámí vlastního echa.
Links
GA206/06/0954, research and development project |
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MSM0021622416, plan (intention) |
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