Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 17 of 17 for “"Insectivorous Bats"”.
-
Structure of an Ensemble of Insectivorous Bats
… or two traits. Using seven sympatric Jamaican bats, I examined features which could allow for spatial, temporal, behavioural and dietary partitioning including wing morphology, echolocation characteristics, flight behaviour, habitat use, and diet. Using acoustic arrays I compared activity …
-
Long-Term Effects of Forest Harvesting on Habitat Use By Insectivorous Bats
… effects of forest harvesting on forest-dwelling bats have received considerable attention. However, knowledge about the long-term effects are also essential to better conserve forest-dwelling bat populations in North America. As vegetation regenerates over time post-harvest, changes created by …
-
Local impacts of White-nose Syndrome on the foraging ecology of insectivorous bats
… are a core resource for many of North America's insectivorous bats. These predators consume Lepidoptera of varying sizes, and some bat species remove the wings prior to consumption. Selection of larger prey and subsequent wing removal may allow bats to optimize the energetic value afforded by …
-
Local and landscape scale effects of fragmentation on aerial insectivorous bats in the Amazon
… and recovery on tropical biota. Amazonian aerial insectivorous bats provide vital forest ecosystem services, yet as a group they are understudied compared to their phyllostomid counterparts. This study aims to address this research gap by investigating assemblage- (via multidimensional diversity), …
-
The relative influence of competition and coevolution on the community structure of insectivorous bats in Southern Africa
… the community structure of animals such as insectivorous bats with life histories characterized by low fecundity. low predation risk. long life expectancy, and stable populations. I investigated the relative influence of biotic filters on various parameters that define bat community …
-
Role of bats as natural pest control agents of moth pests (false codling moth and carob moth) on citrus orchard
… past two decades, the interest in services that insectivorous bats provide within agricultural landscapes through insect pest suppression has gained recognition globally. Multiple studies have thoroughly examined the vital role played by insectivorous bats within agricultural landscapes as …
-
AERIAL WARFARE BETWEEN BATS AND MOTHS: EFFICACY OF ACOUSTIC APOSEMATISM, FLIGHT BEHAVIORS OF UNPALATABLE PREY, AND TWO NOVEL ANTI-BAT STRATEGIES
… intense selective pressure from echolocating, insectivorous bats for nearly 65 million years. In response, they have evolved a suite of remarkable defenses to deal with their would-be predators. Three key innovations underlie the success of the tiger moth lineage: (1) ultrasound-sensitive ears …
-
Moths fight back: arms race in the cloud forest
Moths and bats engage in a coevolutionary arm race, where the same signals bats use to find moths are being used by moths to avoid bats. Moths evolve not only behavioral but acoustic responses to avoid predation by bats. This research examines one small component of a complex, multispecies arm race …
-
Ecologia alimentar de morcegos insetívoros de área urbana do município do Rio de Janeiro, RJ (Mammalia: Chiroptera)
… dissertation reports on the feeding ecology of insectivorous bats from urban areas of county of Rio de Janeiro, state of Rio de Janeiro, Brazil. The study was carried out between November of 1991 and July of 1993. The most frequently captured species were the following: Myotis nigricans (Schinz, …
-
The impact of edge-effects on aerial insectivorous bat assemblages in the Amazon
… distribution in human-modified landscapes. Bats are the second most diverse mammalian order, however many species are not targeted in studies on edge-effects, particularly in tropical forests which suffer the highest rates of deforestation. This study aims to quantify the magnitude and …
-
Bat activity over wetlands: temporal and spatial variation
… temporally as well as spatially. For temperate insectivorous bats, wetlands are important forage habitats because they provide water and high abundances of insects. My overall objective was to identify abiotic and biotic factors that influence bat foraging activity over wetlands in the channeled …
-
"""White Noise"" Non-Linear Analysis of Inferior Colliculus Neural Responses in the Little Brown Bat, Myotis Lucifugus"
"Echolocation is the primary means by which insectivorous bats orient in flight and capture insect prey. FM bats, whose calls consist of a short (1-5 ms) frequency-modulated (FM) sweep, were chosen for this study. The goal of these experiments was to develop techniques for efficiently …
-
Valuing the ecosystem services provided by UK bats under climate change
… and ecosystem functioning worldwide. Insectivorous bats are recognised as important regulators of agricultural pests populations, yet the ecological mechanisms linking bat biodiversity to potential pest suppression, and the economic value of this service, remain poorly understood. This …
-
Winter ecology of migratory Brazilian free-tailed bats (Tadarida brasiliensis) in bridges of the southwestern United States.
Bats are diverse and ubiquitous mammals with a worldwide distribution. In the U.S., especially the southwest, Brazilian free-tails (Tadarida brasiliensis: I. Geoffroy Saint-Hilaire, 1824) are arguably the most abundant bat in the western hemisphere. These insectivorous bats range from Nebraska to …
-
Influence of habitat and bat activity on moth community composition and seasonal phenology across habitat types
… between habitats and mediates the activity of insectivorous bats is understudied. Previous research into the impact of bat activity on moths has primarily focused on interactions in a single habitat type or a single moth species of interest, leaving a large knowledge gap on how habitat …
-
Bat Resource Utilization Along the Potomac River Corridor in Maryland
… use and population responses. The response of bats to periodical cicadas is largely unknown. Using a before-after-control-impact study design, we deployed ultrasonic acoustic detectors during the summers of 2020–2022 within and just outside the range of the cicada emergence along the Potomac …
-
Ecological role and conservation status of the endangered, native Fijian free-tailed bat (Mops bregullae, Felten 1964) in fragmented forest habitats
Bats of Fiji are of significant conservation value because they represent Fiji’s only native mammals and contain the most secure global populations of several threatened taxa. Bats are ecologically important as they provide critical ecosystem services of pollination and insect control in both …