a 2007

Microclimate and bugs (Cimicidae): a possible cause of roost switching by vespertilionid bats

BARTONIČKA, Tomáš

Basic information

Original name

Microclimate and bugs (Cimicidae): a possible cause of roost switching by vespertilionid bats

Name in Czech

Mikroklima a štěnice (Cimicidae): možná příčina střídání úkrytů netopýry

Authors

BARTONIČKA, Tomáš (203 Czech Republic, guarantor)

Edition

Program and Abstracts, XIV International Bat Research Conference in Merida, Mexico, 2007

Other information

Language

English

Type of outcome

Konferenční abstrakt

Field of Study

10600 1.6 Biological sciences

Country of publisher

Mexico

Confidentiality degree

není předmětem státního či obchodního tajemství

RIV identification code

RIV/00216224:14310/07:00020473

Organization unit

Faculty of Science

Keywords in English

roosts; pipistrelles; bat bugs

Tags

International impact
Změněno: 1/9/2010 14:38, doc. Mgr. Tomáš Bartonička, Ph.D.

Abstract

V originále

The objectives of the presented study are to extend the knowledge about influence of the microclimate and interaction of bats with roost ectoparasites, bugs of group Cimex pipistrelli. Previous results have shown frequent movements between different shelters in pipistrelles. The changes in occupation of three bat boxes used by Pipistrellus pygmaeus and the dynamics in numbers of the bugs ibidem were studied. Models indicated that internal relative humidity described better the fluctuation in bat numbers during pregnancy and lactation than did changes in the internal temperature. Three variables (internal humidity, external temperature, and number of bats) described almost 90% of the variability in internal roost temperature, while the number of bats described only 29% of the variability. A negative correlation was found between the internal temperature and the number of bats roosting in a bat box during pregnancy and lactation. The internal temperature of a roost with bats was biased by thermoregulation strategies induced by the bats during particular reproductive periods. The decrease in bug numbers began only several days after the bats had left the boxes. After a month of the bats' absence, the abundance of adult bugs decreased by half of their number. Only the eggs survived the period when the roosts were unoccupied in summer. In mid-July, after the arrival of lactating females, an increase in the number of bugs was observed, however, no new eggs were found. Although eggs were able to survive the hot period, they were negatively influenced by high humudity in autumn and only adult bugs survived the winter period. The bats, by shifting the roosts within the vegetation season, both avoid high roost temperatures and prevent the massive reproduction of these parasites. The study was supported by the grant of MEYS CR No. MSM0021622416 and the CSF No. 206/07/P098, 206/06/0954.

In Czech

Mikroklima a štěnice (Cimicidae): možná příčina střídání úkrytů netopýry

Links

GP206/07/P098, research and development project
Name: Parazitace štěnicemi (Cimicidae): možná příčina střídání úkrytů netopýry
Investor: Czech Science Foundation, Parasitation by bed bugs (Cimicidae): a possible cause of roost switching by bats
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