The emergence activity of serotine bat and its changes due to
predation risk and climatic factors

D 1999

The emergence activity of serotine bat and its changes due to predation risk and climatic factors

PETRŽELKOVÁ, Klára and Jan ZUKAL

Basic information

Original name

The emergence activity of serotine bat and its changes due to predation risk and climatic factors

Authors

PETRŽELKOVÁ, Klára and Jan ZUKAL

Edition

Kraków, Poland, Abstracts of VIIth European Bat Research Symposium, 23.-27.8.1999, p. 48-49, Publ. of the Chiropterological Center, IASE PAS, 1999

Publisher

PLATAN Publishing Hause

Other information

Language

English

Type of outcome

Proceedings paper

Field of Study

10600 1.6 Biological sciences

Country of publisher

Poland

Confidentiality degree

is not subject to a state or trade secret

RIV identification code

RIV/00216224:14330/99:00003924

Organization unit

Faculty of Informatics

ISBN

83-85222-47-2

Keywords in English

chiropterology; emergence activity; predation risk; climatic factors; bats; Chiroptera

Abstract

In the original language

A total of 34 observations of emergence activity were made from April to August 1997 and 1998 at a maternity colony of serotine bats (Eptesicus serotinus) in Střelice u Brna, Czech Republic. The time of first emergence and the median of emergence were strongly correlated with sunset. Mean emergence time was 5,2 min after sunset. After parturition the duration of emergence was prolonged and the emergence ended later. Cloud cover, wind speed and relative humidity had no effect on parameters of emergence. The number of emerged bats and the duration of emergence were positively affected by the temperature. The number of emerged bats was significantly negatively correlated with barometric pressure. To study antipredator responses in emergence activity of serotine, a stuffed barn owl (Tyto alba) was used as a predator model and placed close to roost exits on 7 nights in 1997. A stuffed common kestrel (Falco tinnunculus) was used on 7 nights in 1998. Both predator models associated with their calls did not cause changes of any parameter of emergence activity. 91% of emergences were clustered. However, clustering did not increase during the presence of the stuffed owl or kestrel.

Links

IAA6087606, research and development project

Name: Výzkum potravní ekologie netopýrů

Cite

PETRŽELKOVÁ, Klára and Jan ZUKAL. The emergence activity of serotine bat and its changes due to predation risk and climatic factors. In Abstracts of VIIth European Bat Research Symposium, 23.-27.8.1999. Kraków, Poland: PLATAN Publishing Hause, 1999, p. 48-49. Publ. of the Chiropterological Center, IASE PAS. ISBN 83-85222-47-2.

@inproceedings{255311,
   author = {Petrželková, Klára and Zukal, Jan},
   address = {Kraków, Poland},
   booktitle = {Abstracts of VIIth European Bat Research Symposium, 23.-27.8.1999},
   keywords = {chiropterology; emergence activity; predation risk; climatic factors; bats; Chiroptera},
   language = {eng},
   location = {Kraków, Poland},
   isbn = {83-85222-47-2},
   pages = {48-49},
   publisher = {PLATAN Publishing Hause},
   title = {The emergence activity of serotine bat and its changes due to predation risk and climatic factors},
   year = {1999}
}

TY  - CONF
ID  - 255311
AU  - Petrželková, Klára - Zukal, Jan
PY  - 1999
TI  - The emergence activity of serotine bat and its changes due to predation risk and climatic factors
VL  - Publ. of the Chiropterological Center, IASE PAS
PB  - PLATAN Publishing Hause
CY  - Kraków, Poland
SN  - 8385222472
KW  - chiropterology
KW  - emergence activity
KW  - predation risk
KW  - climatic factors
KW  - bats
KW  - Chiroptera
N2  - A total of 34 observations of emergence activity were made from April to August 1997 and 1998 at a maternity colony of serotine bats (Eptesicus serotinus) in Střelice u Brna, Czech Republic. The time of first emergence and the median of emergence were strongly correlated with sunset. Mean emergence time was 5,2 min after sunset. After parturition the duration of emergence was prolonged and the emergence ended later. Cloud cover, wind speed and relative humidity had no effect on parameters of emergence. The number of emerged bats and the duration of emergence were positively affected by the temperature. The number of emerged bats was significantly negatively correlated with barometric pressure. To study antipredator responses in emergence activity of serotine, a stuffed barn owl (Tyto alba) was used as a predator model and placed close to roost exits on 7 nights in 1997. A stuffed common kestrel (Falco tinnunculus) was used on 7 nights in 1998. Both predator models associated with their calls did not cause changes of any parameter of emergence activity. 91% of emergences were clustered. However, clustering did not increase during the presence of the stuffed owl or kestrel.
ER  -

PETRŽELKOVÁ, Klára and Jan ZUKAL. The emergence activity of serotine bat and its changes due to predation risk and climatic factors. In \textit{Abstracts of VIIth European Bat Research Symposium, 23.-27.8.1999}. Kraków, Poland: PLATAN Publishing Hause, 1999, p.~48-49. Publ. of the Chiropterological Center, IASE PAS. ISBN~83-85222-47-2.

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