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Emergence behaviour of the serotine bat (Eptesicus serotinus) under predation risk
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SYSNO ASEP 0164310 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve SCOPUS Název Emergence behaviour of the serotine bat (Eptesicus serotinus) under predation risk Tvůrce(i) Petrželková, Klára Judita (UBO-W) RID, SAI, ORCID
Zukal, Jan (UBO-W) RID, ORCID, SAIZdroj.dok. Netherlands Journal of Zoology - ISSN 0028-2960
Roc. 51, č. 4 (2001), s. 395-414Poč.str. 20 s. Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova Eptesicus serotinus ; emergence ; predation risk Vědní obor RIV EG - Zoologie CEP IAC6087502 GA AV ČR - Akademie věd KSK6005114 GA AV ČR - Akademie věd CEZ AV0Z6093917 - UBO-W EID SCOPUS 0035738424 DOI 10.1163/156854201317375390 Anotace Emergence activity of a maternity colony of Eptesicus serotinus was monitored from May to August 1997 and 1998 at Strelice, Czech Republic. We focused mainly on the impact of predation risk on emergence parameters, but the effects of reproductive and climatic factors were assessed too. Observations were made with 10-days intervals during two consecutive nights from which the first was a control and the second a treatment night. On treatment nights a stuffed specimen of Tyto alba (in 1997) or Falco tinnunculus (in 1998) was placed close to the roost exits and recorded calls of the particular species were played back towards the roost. In 1997 the bats emerged earlier during lactation than during gravidity, while in 1998 the trend was opposite. This could be explained by a different course of food availability in each year. During poor weather the number of emerged bats decreased and bats probably used an alternative roost. The predation risk did not affect the values of any emergence parameter but induced changes in relationships among emergence parameters. When bats emerged earlier and thus were exposed to increased potential predation pressure, they increased their degree of clustering to decrease the probability of being attacked. The perception of predation risk was not affected by weather conditions or reproductive period. Pracoviště Ústav biologie obratlovců Kontakt Hana Slabáková, slabakova@ivb.cz, Tel.: 543 422 524 Rok sběru 2003
Počet záznamů: 1