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Colonies of the Big Brown Bat (Eptesicus fuscus) were located and studied in Blackford, Delaware, Grant, Henry, Jay, Madison, and Randolph Counties, Indiana, from June 12, 1988 through August 25, 1989. During the study, 24 colonies were located. Attempts were made to capture as many bats as possible during visits to the colonies. Colony sites were revisited several times during the two year study. A total of 1,846 bats were captured, banded and examined. During examinations bats were sexed, aged, weighed, and checked for wing damage and ectoparasites. The weights from the captured bats provided data on differences in bat weights for the summer of 1988 and 1989. The summer of 1988 was characterized by drier than normal precipitation, and the summer of 1989 had wetter than normal precipitation. Several comparisons were carried out on the data. The comparisons showed a correlation between increased rainfall and increased bat weights. In the wet year of 1989, adult bats were significantly heavier than they were in 1988. Juveniles were slightly heavier but not significantly. Further detailed data regarding age and sex ratios; wing damage and ectoparasite occurence are discussed briefly. / Department of Biology

Maternal colonies of the big brown bat, Eptesicus fuscus were studied in Delaware and Grant Counties from 21 May to 22 September, 1992. Nineteen colonies of bats were located and revisited several times during the summer. Bats were captured, sexed, aged, weighed and banded at each site. The weight gain pattern of the bats was related to rainfall and temperature during the summer. Other factors that might affect weight gain such as ectoparasites, tooth wear, and wing damage were also measured.The summer of 1992 had below normal rainfall in May and above normal rainfall in June and July. Temperatures were below normal during the study period. The weights of captured bats were compared to weights of bats captured at similar colonies during the same period in 1988, a dry year, and 1989 a wet year. Both of these years had near normal temperatures. Lower weight gain for juveniles and for adult females in late spring and early summer of 1992 was associated with higher than average precipitation and lower than average temperatures during the period. / Department of Biology

Tyrimai buvo atlikti pietvakarių Lenkijoje, Oderio upės slėnyje Kwiatkowice (Kviatkovice) ir Rzeczyca (Žečica) apylinkėse, pietvakarių Lenkijoje, Žemutinės Silezijos vaivadijoje (Dolnośląskie województwo) 2010 m. Tyrimams pasirinktos penkios vietos: upės vagos šiaurės-pietų kryptis ir vakarų-rytų kryptis,lapuočių miško proskyna, pamiškė, kultūrinė pieva. Tyrimai buvo atlikti naudojant bioakustinį, dviejų detektorių sistemos metodą (Jarzembowski, 2003). Oderio upės slėnyje kiekviename punkte buvo pastatyta po du detektorius. Atstumas tarp detektorių – 10 m, detektoriai nukreipti 45º kampu į viršų, atstumas virš žemės – 2 m. Detektorių nukreipimas 45º kampu į viršų leidžia registruoti daugiau šikšnosparnių, kurie skrenda ir arti vandens, ir žymiai aukščiau. Rūšių apibudinimui naudojama Ahlen (1981) ir Barataud (1996, 2006) metodika. Oderio upės slėnio biotopuose aptiktos aštuonios šikšnosparnių rūšys: šikšniukas mažylis, šikšniukas nykštukas, Natuzijaus šikšniukas, rudasis nakviša, vandeninis pelėausis, kūdrinis pelėausis, Branto pelėausis, vėlyvasis šikšnys. Nustatyta, kad vandeninis pelėausis, šikšniukas mažylis, Natuzijaus šikšniukas naudojasi upės vaga kaip migracijos koridoriumi, bet plačiau slėniu nemigruoja. Rudojo nakvišos nekryptingų perskridimų ir maitinimosi signalų visuose biotopuose buvo daug, tai gali reikšti, kad jis tik maitinasi visuose upės slėnio biotopuose. Vėlyvojo šikšnio ir šikšniuko nykštuko kryptingi perskridimai nustatyti miške ir pamiškėje... [toliau žr. visą tekstą] / We studied migration of bats along Odra river valley in SW Poland for four nights in September 2010. We carried out all-night acoustical observations of bats flying at the river North-Soutth and East-West directions segments, in the forest, grassland and on the outer wood. The direction on bats’ movements were determined on the basis of echolocation sequences order recorded by two frequency division ultrasound detectors. We noted activity for eight species: Myotis daubentonii, M. dasycneme, M. brandti, Nyctalus noctula, Pipistrellus nathusii, P. pipistrellus, P. pygmaeus, Eptesicus serotinus. Our results show that Myotis daubentonii, Pipistrellus nathusii, P. pygmaeus use only the river as the migration corridor, but not all valley of the river. Eptesicus serotinus and P. pipistrellus directional flyings were detected in the forest, but these data were unsufficient to relate the migratory way and the valley of the river. The great amount of undirectional flyings and nutrition signals of Nyctalus noctula in all places shows that this species uses all the valley for nutrition. Our results show that the activities of different bats species for twenty four hours are different at the river. The greatest counts of sequencies for Myotis daubentonii, Nyctalus noctula were registered in the evening: Myotis daubentonii – at 8 p.m., and Nyctalus noctula – at 7 p.m. Activities of Pipistrelus pygmaeus and Pipistrellus nathusii were similar during all night time. No activities of bats were... [to full text]

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Thesis (Ph.D.)--University of Missouri-Columbia, 2007. / The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on March 23, 2009) Vita. Includes bibliographical references.

Thesis (M.S.)--West Virginia University, 2010. / Title from document title page. Document formatted into pages; contains vi, 112 p. : col. map. Includes abstract. Includes bibliographical references.