Global ETD Search

1	Host Specificity and Ectoparasite Load of Bat Flies in Utila, Honduras Miller, Courtney 01 August 2014 (has links) Bat flies (Streblidae) are obligate blood-feeding ectoparasites of bats that display varying degrees of host specificity. A total of 265 streblid bat flies were collected from 122 bats belonging to the families Phyllostomidae and Natalidae from Utila, the smallest bay island of Honduras. Out of four host-parasite associations, three were considered primary. Out of the three bat species analyzed, one had significantly lower parasite prevalence and another had significantly higher parasite load and intensity. Both male and female bats were equally likely to be infested and variables of parasite density did not differ amongst host sex for any species. However, one species of bat had a significantly larger number of male parasites than female parasites. No significant relationships were found between variables of parasite density and host body mass or bat health (indicated by the ratio of mass to forearm length). The roosting ecology of the two cave roosting species in the study was considered and despite no apparent lack of dispersal barriers, the bat flies exhibited consistent primary associations. Examination of similar host-parasite relationship has many implications in parasite-host relationships and coevolution. Biology Entomology
2	Populační ekologie netopýra vodního \kur{Myotis daubentonii} / Population ecology of Daubenton's bat \kur{Myotis daubentonii} LUČAN, Radek January 2010 (has links) Various aspects of population ecology of Daubenton?s bat (Myotis daubentonii) were analyzed based on long-term data (1968?1984 and 1999?2009) gathered in a single model study area (ca. 10 km2) in South Bohemia, Czech Republic. Among others, population structure, roosting dynamics, movements between roosts and long-term trends in numbers of bats were described. Results of the study on patterns in reuse of tree cavities suggest that tree cavities may be reused for many consecutive seasons and that this has to be taken into consideration by conservation practices. The results of the study on microclimate of one maternity and one male colony roosting in man-made structures revealed that microclimatic differences may be one of the key factors in roosting preference between the two sexes. Further, a profound effect of changing energetic demands in females during different phases of the reproductive cycle may greatly influence their activity rhytms. In further two studies, the effect of climate on reproductive parameters of bats and abundance of ectoparasitic mites was analyzed. The results suggest that climatic variation greatly influenced reproductive parameters and parasitation of Daubenton?s bats. Last but not least, the seasonal dynamics of parasitation by ectoparasitic mites and the possible effect on bats? condition was analyzed. It was found out that seasonal dynamics in abundance of parasites is adjusted to the reproductive cycle and roosting dynamics of its host.
3	Do Bats use Olfactory Cues to Find Roosts? Brown, Bridget Kay Gladden 29 September 2020 (has links) No description available. Biology Behavioral Sciences Ecology bats multimodal replication roosting ecology sensory ecology
4	A Novel Approach to Assessing Abundance and Behavior in Summer Populations of Little Brown Myotis in Yellowstone National Park Waag, Austin G. January 2018 (has links) No description available. Animals Animal Diseases Biology Ecology Wildlife Conservation Wildlife Management abundance bats Chiroptera high-frequency little brown myotis mark recapture population dynamics population ecology Program MARK PIT radio-frequency identification RFID roosting ecology social behaviors tag collision

1

Page generated in 0.1103 seconds