J 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 GAISLER

Basic 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.

Abstract

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
Name: Vnitrodruhová variabilita populací dvou kryptických druhů netopýrů rodu Pipistrellus ve střední Evropě
Investor: Czech Science Foundation, Intraspecific variability of populations of two cryptic bat species of genus Pipistrellus in Central Europe
MSM0021622416, plan (intention)
Name: Diverzita biotických společenstev a populací: kauzální analýza variability v prostoru a čase
Investor: Ministry of Education, Youth and Sports of the CR, Diversity of Biotic Communities and Populations: Causal Analysis of variation in space and time