Relevant bibliographies by topics / Insectivorous bats

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  2. Dissertations / Theses
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Academic literature on the topic 'Insectivorous bats'

Author: Grafiati
Published: 4 June 2021
Last updated: 12 February 2022

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Journal articles on the topic "Insectivorous bats"

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Yani, Desi Arsita, and Wanda Nurma Yuliyantika. "Comparative Anatomy and Histology of Digestive Organs of Fruit-Eating Bats (Pteropus Vampyrus Linnaeus, 1758) and Insect-Eating Bats (Rhinolopus pusillus Temminck, 1834)." Proceeding International Conference on Science and Engineering 2 (March 1, 2019): 37–40. http://dx.doi.org/10.14421/icse.v2.51.

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Animal Bat consists of Megachiroptera and Microchiroptera. The difference between the two bats lies in the type and behavior of eating. Megachiroptera is a fruit-eating bat, while Microchiroptera is an insect-eating bat. This study aims to compare the digestive organ of fruit-eating bats (Pteropus vampyrus) and insect-eating bats (Rhinolopus pusillus). This research was conducted by observing macroanatomy and microanatomy in the digestive organ of both bats. Macroanatomy observation is done by looking at the shape and curvature of the analysis through organ photo media. Microanatomy observation was done by making organ preparations with hematoxylin-eosin staining and observed using a microscope. The digestive organ of fruit-eating bats and insectivores consists of the esophagus, stomach, duodenum and rectum. Macroanatomically, fruit-eating bats and insectivores differ in size, where the fruit-eating bat's digestive organs are larger than insectivorous bats. Microanatomically, fruit-eating bats and insectivores have relatively similar histological structures, which differ only in the size of the cell.
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Whitaker, John O., H. Kathleen Dannelly, and David A. Prentice. "Chitinase in Insectivorous Bats." Journal of Mammalogy 85, no. 1 (February 2004): 15–18. http://dx.doi.org/10.1644/1545-1542(2004)085<0015:ciib>2.0.co;2.

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Chu, D. K. W., L. L. M. Poon, Y. Guan, and J. S. M. Peiris. "Novel Astroviruses in Insectivorous Bats." Journal of Virology 82, no. 18 (June 11, 2008): 9107–14. http://dx.doi.org/10.1128/jvi.00857-08.

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ABSTRACT Bats are increasingly recognized to harbor a wide range of viruses, and in most instances these viruses appear to establish long-term persistence in these animals. They are the reservoir of a number of human zoonotic diseases including Nipah, Ebola, and severe acute respiratory syndrome. We report the identification of novel groups of astroviruses in apparently healthy insectivorous bats found in Hong Kong, in particular, bats belonging to the genera Miniopterus and Myotis. Astroviruses are important causes of diarrhea in many animal species, including humans. Many of the bat astroviruses form distinct phylogenetic clusters in the genus Mamastrovirus within the family Astroviridae. Virus detection rates of 36% to 100% and 50% to 70% were found in Miniopterus magnater and Miniopterus pusillus bats, respectively, captured within a single bat habitat during four consecutive visits spanning 1 year. There was high genetic diversity of viruses in bats found within this single habitat. Some bat astroviruses may be phylogenetically related to human astroviruses, and further studies with a wider range of bat species in different geographic locations are warranted. These findings are likely to provide new insights into the ecology and evolution of astroviruses and reinforce the role of bats as a reservoir of viruses with potential to pose a zoonotic threat to human health.
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Furey, Neil M., Iain J. Mackie, and Paul A. Racey. "The role of ultrasonic bat detectors in improving inventory and monitoring surveys in Vietnamese karst bat assemblages." Current Zoology 55, no. 5 (October 1, 2009): 327–41. http://dx.doi.org/10.1093/czoolo/55.5.327.

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Abstract Bats account for 30% of mammal diversity in SE Asia and are potential bioindicators of wider biodiversity impacts resulting from habitat loss and climate change. As existing sampling techniques in the region typically fail to record bats that habitually fly in open areas and at higher altitudes, current inventory efforts are less than comprehensive. Acoustic sampling with bat detectors may help to overcome these limitations for insectivorous bats, but has yet to be tested in mainland SE Asia. To do so, we sampled bats while simultaneously recording the echolocation calls of insectivorous species commuting and foraging in a variety of karst habitats in north Vietnam. Monitoring of cave-dwelling bats was also undertaken. Discriminant function analysis of 367 echolocation calls produced by 30 insectivorous species showed that acoustic identification was feasible by correctly classifying 89. l % of calls. In all habitats, acoustic sampling and capture methods recorded significantly more species each night than capture methods alone. Capture methods consequently failed to record 29 % (ten spp. of aerial insectivores) of the bat fauna in commuting and foraging habitats and 11% (two spp.) of that in our cave sample. Only four of these species were subsequently captured following significantly greater sampling effort. This strongly suggests that acoustic methods are indispensable for maximizing bat inventory completeness in SE Asia. As accurate inventories and monitoring are essential for effective species conservation, we recommend the inclusion of acoustic sampling in future studies of bat assemblages across the region.
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Straka, Tanja M., Pia E. Lentini, Linda F. Lumsden, Sascha Buchholz, Brendan A. Wintle, and Rodney van der Ree. "Clean and Green Urban Water Bodies Benefit Nocturnal Flying Insects and Their Predators, Insectivorous Bats." Sustainability 12, no. 7 (March 26, 2020): 2634. http://dx.doi.org/10.3390/su12072634.

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Nocturnal arthropods form the prey base for many predators and are an integral part of complex food webs. However, there is limited understanding of the mechanisms influencing invertebrates at urban water bodies and the potential flow-on effects to their predators. This study aims to: (i) understand the importance of standing water bodies for nocturnal flying insect orders, including the landscape- and local-scale factors driving these patterns; and (ii) quantify the relationship between insects and insectivorous bats. We investigated nocturnal flying insects and insectivorous bats simultaneously at water bodies (n = 58) and non-water body sites (n = 35) using light traps and acoustic recorders in Melbourne, Australia. At the landscape scale, we found that the presence of water and high levels of surrounding greenness were important predictors for some insect orders. At the water body scale, low levels of sediment pollutants, increased riparian tree cover and water body size supported higher insect order richness and a greater abundance of Coleopterans and Trichopterans, respectively. Most bat species had a positive response to a high abundance of Lepidopterans, confirming the importance of this order in the diet of insectivorous bats. Fostering communities of nocturnal insects in urban environments can provide opportunities for enhancing the prey base of urban nocturnal insectivores.
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Adhikari, Roshan Babu, Mahendra Maharjan, and Tirth Raj Ghimire. "Prevalence of Gastrointestinal Parasites in the Frugivorous and the Insectivorous Bats in Southcentral Nepal." Journal of Parasitology Research 2020 (December 12, 2020): 1–12. http://dx.doi.org/10.1155/2020/8880033.

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Bats are the only active flying placental mammals and are traditionally classified into mega- and microbats, which are, respectively, herbivorous and insectivorous in feeding habit. Though deforestation, habitat destruction, natural calamities, illegal hunting, and climate changes are the challenging threats for bats, the role of existing gastrointestinal (GI) parasites have not been evaluated yet in Nepal. Thus, the current study aims to determine the prevalence of GI parasites in bats from the Shaktikhor area at the Chitwan district of Southcentral Nepal. From July 2018 to February 2019, a total of 60 fecal samples of bats (30 from frugivorous bats and 30 from the insectivorous bats) were collected. These samples were preserved at 2.5% potassium dichromate solution. The fecal examination was carried out by the direct wet mount, concentrations, acid-fast staining, and sporulation techniques. Overall results showed the prevalence rate of 80% GI parasites. The parasites detected in the insectivorous bats were Ascarid spp., Capillarid sp., Cryptosporidium sp., Eimeria spp., Entamoeba sp., Giardia sp., Hymenolepis spp., Isospora sp., Oxyurid sp., Strongyle, and Strongyloides sp. In contrast, Eimeria sp., Entamoeba sp., and Hymenolepis sp. were detected in the frugivorous bats. Based on a wide diversity of parasite richness and parasitic concurrency measured by the prevalence rates, we suggest that GI parasitism might be a threatening factor in the insectivorous bats in the current study area.
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Jiao, Hengwu, Huan-Wang Xie, Libiao Zhang, Nima Zhuoma, Peihua Jiang, and Huabin Zhao. "Loss of sweet taste despite the conservation of sweet receptor genes in insectivorous bats." Proceedings of the National Academy of Sciences 118, no. 4 (January 21, 2021): e2021516118. http://dx.doi.org/10.1073/pnas.2021516118.

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The evolution of taste perception is usually associated with the ecology and dietary changes of organisms. However, the association between feeding ecology and taste receptor evolution is unclear in some lineages of vertebrate animals. One example is the sweet taste receptor gene Tas1r2. Previous analysis of partial sequences has revealed that Tas1r2 has undergone equally strong purifying selection between insectivorous and frugivorous bats. To test whether the sweet taste function is also important in bats with contrasting diets, we examined the complete coding sequences of both sweet taste receptor genes (Tas1r2 and Tas1r3) in 34 representative bat species. Although these two genes are highly conserved between frugivorous and insectivorous bats at the sequence level, our behavioral experiments revealed that an insectivorous bat (Myotis ricketti) showed no preference for natural sugars, whereas the frugivorous species (Rousettus leschenaultii) showed strong preferences for sucrose and fructose. Furthermore, while both sweet taste receptor genes are expressed in the taste tissue of insectivorous and frugivorous bats, our cell-based assays revealed striking functional divergence: the sweet taste receptors of frugivorous bats are able to respond to natural sugars whereas those of insectivorous bats are not, which is consistent with the behavioral preference tests, suggesting that functional evolution of sweet taste receptors is closely related to diet. This comprehensive study suggests that using sequence conservation alone could be misleading in inferring protein and physiological function and highlights the power of combining behavioral experiments, expression analysis, and functional assays in molecular evolutionary studies.
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Han, Hui-Ju, Hong-Ling Wen, Jian-Wei Liu, Xiang-Rong Qin, Min Zhao, Li-Jun Wang, Li-Mei Luo, et al. "PathogenicLeptospiraSpecies in Insectivorous Bats, China, 2015." Emerging Infectious Diseases 24, no. 6 (June 2018): 1123–26. http://dx.doi.org/10.3201/eid2406.171585.

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Schaer, Juliane, DeeAnn M. Reeder, Megan E. Vodzak, Kevin J. Olival, Natalie Weber, Frieder Mayer, Kai Matuschewski, and Susan L. Perkins. "Nycteria parasites of Afrotropical insectivorous bats." International Journal for Parasitology 45, no. 6 (May 2015): 375–84. http://dx.doi.org/10.1016/j.ijpara.2015.01.008.

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POULTON, EDWARD B. "British Insectivorous Bats and their Prey." Proceedings of the Zoological Society of London 99, no. 2 (May 7, 2010): 277–303. http://dx.doi.org/10.1111/j.1469-7998.1929.tb07743.x.

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Dissertations / Theses on the topic "Insectivorous bats"

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Maine, Josiah J. "TROPHIC ECOLOGY OF INSECTIVOROUS BATS IN AGROECOSYSTEMS." OpenSIUC, 2014. https://opensiuc.lib.siu.edu/theses/1599.

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Land-use change is a leading cause of biodiversity loss and ecosystem service degradation worldwide, but these changes do not affect all organisms equally. Understanding the factors that influence resistance to environmental change is vital for informed conservation. In particular, dietary generalists may withstand environmental change better than specialists due to their ability to exploit variable resources. Bats are voracious predators of insects, but vary widely in their degree of dietary specialization. In Chapter 1, I analyze the effect of land cover and morphology on dietary diversity and the two most common prey items (Lepidoptera and Coleoptera) of bats, selecting important independent variables using phylogenetic generalized least squares (PGLS) and model selection. Dietary diversity increased with increasing amount of cropland near the study area, consumption of Lepidoptera decreased with increasing habitat diversity, and consumption of Coleoptera decreased with increasing distance from the equator. Biodiversity (and hence, prey diversity) is expected to decrease with agricultural intensity, but the observed pattern suggests that dietary specialists may avoid agricultural habitats due to lack of preferred prey. Dietary specialists may thus be increasingly at risk as agricultural intensity increases around the world, and it is essential that we continue to document their ecological roles and the services they provide to society
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Lumsden, L. F. "The ecology and conservation of insectivorous bats in rural landscapes." Click here to access, 2004. http://tux.lib.deakin.edu.au/adt-VDU/public/adt-VDU20050825.143504.

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Lumsden, Linda F., and mikewood@deakin edu au. "The ecology and conservation of insectivorous bats in rural landscapes." Deakin University. School of Ecology and Environment, 2004. http://tux.lib.deakin.edu.au./adt-VDU/public/adt-VDU20050825.143504.

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Throughout the world, the increasing use of land for agriculture has been associated with extensive loss and fragmentation of natural habitats and, frequently, the degradation of remaining habitats. The effects of such habitat changes have been well studied for some faunal groups, but little is known of their consequences for bats. The aim of this study was to investigate the ecology and conservation of an assemblage of insectivorous bats in a rural landscape, with particular focus on their foraging and roosting requirements. This increased knowledge will, hopefully, assist the formulation of policy and management decisions to ensure the long-term survival of bats in these altered environments. The distribution and abundance of insectivorous bats in the Northern Plains of Victoria was investigated to determine the impacts of land-use change and to identify factors influencing the distribution of bats in rural landscapes. Thirteen species of insectivorous bats were recorded across the region by sampling at 184 sites. Two species were rare, but the remaining 11 species were widespread and occurred in all types of remnant wooded vegetation, ranging from large blocks (≥200 ha) to small isolated remnants (≤5 ha) and scattered trees in cleared farm paddocks. There was no significant difference between remnant types in the relative abundance of bat species, in species richness, or in the composition of bat assemblages at study sites. In a subsequent study, no difference in the activity levels of bats was found between remnants with different tree densities, ranging from densely-vegetated blocks to single paddock trees. However, sites in open paddocks devoid of trees differed significantly from all types of wooded remnants and had significantly lower levels of bat activity and a different species composition. In highly cleared and modified landscapes, all native vegetation has value to bats, even the smallest remnant, roadside and single paddock tree. Roost sites are a key habitat requirement for bats and may be a limiting resource in highly modified environments. Two species, the lesser long-eared bat Nyctophilus geoffroyi and Gould's wattled bat Chalinolobus gouldii, were investigated as a basis for understanding the capacity of bats to survive in agricultural landscapes. These species have different wing morphologies, which may be influential in how they use the landscape, and anecdotal evidence suggested differences in their roosting ecology. Roosting ecology was examined using radio-tracking to locate 376 roosts in two study areas with contrasting tree cover in northern Victoria. Both species were highly selective in the location of their roosts in the landscape, in roost-site selection and in roosting behaviour, and responded differently to differing levels of availability of roosts. The Barmah-Picola study area incorporated remnant vegetation in farmland and an adjacent extensive floodplain forest (Barmah forest). Male N. geojfroyi roosted predominantly within 3 km of their foraging areas in remnants in farmland. However, most female N. geoffroyi, and both sexes of C. gouldii, roosted in Barmah forest up to 12 km from their foraging areas in farmland remnants. These distances were greater than previously recorded for these species and further than predicted by wing morphology. In contrast, in the second study area (Naring) where only small remnants of wooded vegetation remain in farmland, individuals of both species moved significantly shorter distances between roost sites and foraging areas. There were marked inter- and intra-specific differences in the roosts selected. C. gouldii used similar types of roosts in both areas - predominantly dead spouts in large, live trees. N. geoffroyi used a broader range of roost types, especially in the farmland environment. Roosts were typically under bark and in fissures, with males in particular also using anthropogenic structures. A strong preference was shown by both sexes for roosts in dead trees, and entrance dimensions of roosts were consistently narrow (2.5 cm). In Barmah forest, maternity roosts used by N. geoffroyi were predominantly in narrow fissures in large-diameter, dead trees, while at Naring maternity roosts were also found under bark, in buildings, and in small-diameter, live and dead trees. The number of roost trees that are required for an individual or colony is influenced by the frequency with which bats move between roosts, the proportion of roosts that are re-used, the distance between consecutive roosts, and the size of roosting colonies. Both species roosted in small colonies and regularly shifted roost sites within a discrete roost area. These behavioural traits suggest that a high density of roost sites is required. There were marked differences in these aspects of behaviour between individuals roosting in Barmah forest and in the fragmented rural landscape. At Naring, N. geqffroyi remained in roosts for longer periods and moved greater distances between consecutive roosts than in Barmah forest. In contrast, C. gouldii used a smaller pool of roosts in the farmland environment by re-using roosts more frequently. Within Barmah forest, there is an extensive area of forest but the density of hollow-bearing trees is reduced due to timber harvesting and silvicultural practices. Individuals were selective in the location of their roosting areas, with both species selecting parts of the forest that contained higher densities of their preferred roost trees than was generally available in the forest. In contrast, in farmland at Naring, where there were small pockets of remnant vegetation with high densities of potential roost sites surrounded by cleared paddocks with few roosting opportunities, little selection was shown. This suggests that in Barmah forest the density of trees with potential roosts is lower than optimal, while in farmland roosting resources may be adequate in woodland remnants, but limiting at the landscape scale since more than 95% of the landscape now provides no roosting opportunities. Insectivorous bats appear to be less severely affected than some other faunal groups by habitat fragmentation and land-use change. A highly developed capacity for flight, the spatial scale at which they move and their ability to cross open areas means that they can regularly move among multiple landscape elements, rather than depend on single remnants for all their resources. In addition, bats forage and roost mainly at elevated levels in trees and so are less sensitive to degradation of wooded habitats at ground level. Although seemingly resilient to habitat fragmentation, insectivorous bats are fundamentally dependent on trees for roosting and foraging, and so are vulnerable to habitat loss and ongoing rural tree decline. Protection of the remaining large old trees and measures to ensure regeneration to provide ongoing replacement of hollow-bearing trees through time are critical to ensure the long-term conservation of bats in rural landscapes.
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Lim, Lee Sim. "Assemblage and genetic structure of insectivorous bats in Peninsular Malaysia." Thesis, Queen Mary, University of London, 2012. http://qmro.qmul.ac.uk/xmlui/handle/123456789/8544.

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Past climate change and recent human activity have had major impacts on the distribution of habitats as well as the community and population genetic structure of the species occupying these habitats. In temperate zones, glaciation forced many taxa into southern refugia. In contrast, little is understood about the extent to which tropical taxa and habitats were affected by colder periods. In Southeast Asia, some argue that the tropical forest was replaced by savannah at the Last Glacial Maximum (LGM), whereas others suggest that the forest persisted. Studying population genetic and community structure of forest-dependent species in this region may shed light on which of these scenarios is most likely, as well as provide crucial information on the effects of recent habitat loss. To address these issues, I studied the genetic and community structure of forest-dependent insectivorous bat species in Peninsular Malaysia. Data collected at 22 sites indicated that species richness declined with latitude, consistent with post-glacial expansion of forest. To test this further, I undertook mitochondrial DNA sequencing of a widespread species, Rhinolophus affinis, and found high haplotype diversity, little phylogeographic structure and no demographic growth. These all suggest a long population history in the region with no post-LGM range expansion. Subsequent microsatellite analyses of R. affinis and the congeneric R. lepidus showed that genetic distance followed an isolation-by-distance model, and that allelic diversity was unexpectedly higher in the northern populations. Taken together, my results from the community and genetic analyses disagree with each other. These conflicts are perhaps best explained if observed clines in species richness pre-date the LGM. I conclude that there is little evidence of forest contraction in the LGM. The fact that the highest species diversity was detected in the south, which is experiencing the most forest loss due to human activity, has important conservation consequences.
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Ades, Gary William John. "A comparative ecological study of insectivorous bats (Hipposideridae, Vespertilionidae and Rhinolophidae) in Hong Kong, with special reference to dietary seasonality /." [Hong Kong] : University of Hong Kong, 1994. http://sunzi.lib.hku.hk/hkuto/record.jsp?B16121247.

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Assis, Cecília Kruszynski de. "Diet and ecosystem services of insectivorous bats assessed with stable isotopes." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/64/64135/tde-07032019-103440/.

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Ecosystem services are natural environmental functions and ecological process that humans benefit from. In the present study, it was highlighted one of the services provided by bats: agricultural pest control. In Brazil, studies with insectivorous bats as potential pest suppressors are still scarce, despite the country being one of the biggest agricultural producers in the world and concentrating a high diversity of those animals. The use of heterogeneous landscapes, formed by native vegetation and crop fields, optimize the investment applied in this search. For that, it was described, for the first time, the bat assemblage in heterogeneous landscape in Piracicaba, at the campus \"Luiz de Queiroz\" that comprehends urbanized and agricultural areas, which provides many food resources for bats. Further, it was tested if there is difference in isotopic values (?13C and ?15N) between bat species related to diet, spatial foraging behavior, sex or taxonomic classification and which specie is a better pest suppressor. Bats were captured by mist nets and stable isotope analysis of carbon and nitrogen (?13C e ?15N, respectively) were used to access its food source. Through the analysis of ?13C and ?15N of insects, we determined the proportion of plants with photosynthetic cycles of C3 and C4 in bats\' diet and its trophic level. It was captured 90 bats of 11 species, three families and four dietary categories, corresponding to 66% of the total local richness estimated. From those, five are insectivorous species. Molossus molossus were the most abundant specie, followed by Artibeus lituratus and Glossophaga soricina. Carbon values showed that insectivores, frugivores and nectarivores consume insects, including pests, in different proportions per specie and diet group. Besides, ?15N values showed that bat trophic level were very similar, so bats are more generalist than usually assumed. This study points a need to quantify this important ecosystem service provided by bats that can reduce diseases and crop damages
Serviços ecossistêmicos são funções dos ambientes naturais e dos processos ecológicos dos quais humanos se beneficiam. Esses benefícios podem ser acessados por uma perspectiva econômica e ecológica. No presente estudo, nós destacamos um dos serviços ambientais fornecidos por morcegos: controle de pragas agrícolas. No Brasil, os estudos com morcegos insetívoros como potenciais supressores de pragas ainda são escassos, apesar de o país ser um dos maiores produtores agrícolas do mundo e abrigar uma alta diversidade desses animais. O uso de paisagens heterogêneas, formadas por vegetação nativa e lavouras agrícolas, otimiza o investimento aplicado nessa busca. Para tanto, descrevemos, pela primeira vez, a assembleia de morcegos em um ambiente heterogêneo de Piracicaba, o campus \"Luiz de Queiroz\", que possui desde áreas urbanizadas a agrícolas, disponibilizando diversos recursos alimentares para os morcegos. Ademais, testamos se há diferenças nos valores isotópicos (?13C e ?15N) entre as espécies de morcegos em relação à dieta, comportamento espacial de forrageamento, sexo ou classificação taxonômica para identificar quais grupos são os melhores supressores de pragas agrícolas. Utilizamos redes de neblina para a captura dos morcegos e análises de isótopos estáveis de carbono e nitrogênio (?13C e ?15N, respectivamente) para acessar sua fonte de dieta. Por meio das análises, determinamos a proporção de plantas com ciclos fotossintéticos do tipo C3 e C4 na dieta dos morcegos, bem como seu nível trófico. Capturamos 90 morcegos de 11 espécies, três famílias e quatro classes de dieta, correspondendo a 66% da riqueza estimada para o local. Destas, cinco são espécies classificadas insetívoras. Molossus molossus foi a espécie mais abundante, seguida por Artibeus lituratus e Glossophaga soricina. Valores de ?13C mostraram que insetívoros, frugívoros e nectarívoros consomem insetos, inclusive pragas, em diferentes proporções por espécie e grupo de dieta. O grupo mais efetivo no controle de pragas agrícolas foi M. molossus, seguido por A. planirostris. Os valores de ?15N mostraram que o nível trófico dos diferentes grupos alimentares de morcegos foi similar, de modo que eles são mais generalistas que previsto na literatura. Nosso estudo aponta a necessidade de quantificação desse importante serviço ecossistêmico promovido por morcegos, que podem reduzir doenças e prejuízos nas lavouras, além de combater vetores de doenças
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Andersson, Skog Nils. "Bats in Urban Sweden : A multiple regression analysis of bats’ relationship to urbanization." Thesis, Södertörns högskola, Miljövetenskap, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:sh:diva-45771.

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Human development continues to use up more physical space in the natural world, threatening the natural habitats of many organisms. To combat the loss of biodiversity science needs to explore what landscape features are important for different organisms so that we can incorporate these into the modern environment. As bats play an important role in many ecosystems and can reflect changes through trophic levels, analyzing their preferred habitats can help planners improve biological diversity of the urban habitat. Using acoustically identified bat sightings from Artportalen.se for the years 2017-2018, this paper studied the habitats of bats in Sweden. Through multiple regression analysis we examine the response in abundance and/or diversity of bats to physical and socio-cultural attributes of the urban habitat. We examined a total of 10160 bats from 18 species in 418 land cover locales and 306 demographical statistical areas with varying degrees of urbanization. Our results indicate that bat abundance and diversity decrease significantly with higher urbanization while deciduous forests are the most important land cover type for all bats. The results also indicate that wealthier areas have less abundance and diversity even when factoring in population density. Species specific analysis suggested that bat species who are better adapted at foraging in open vegetated landscapes and over water were less susceptible to the negative impacts of the urban habitat. We conclude that diverse habitats with a mixture of open vegetated areas, watercourses and broadleaf forests are the most important land features for a diverse bat fauna along with high connectivity via tree cover and linear landscape elements. If urban planning could incorporate these features into the urban habitat, some of the negative impacts of urbanization could be prevented.
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Estrada, Villegas Sergio. "Controlling factors of community structure: The case of neotropical aerial insectivorous bats." Thesis, McGill University, 2010. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=95176.

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In order to understand how communities are structured, it is necessary to determine which and how different factors control community properties across scales and how these community properties are related to one another. Working with neotropical insectivorous bat ensembles in Panama, we measured the effects of climate, habitat structure and insect resources at multiple scales on various community properties: composition, species richness abundance and feeding attempts. We then assessed how abundance, richness and biomass affected community evenness. We found that variation in species composition and richness are better explained by climate at larger scales and by habitat structure at smaller scales, respectively, but that total abundance is unrelated to climate. Evenness was directly and negatively correlated with species richness and biomass but indirectly and negatively correlated with abundance. Detecting how controlling factors affect community properties across scales and how community properties are interrelated can provide a better understanding of community structure.
Pour comprendre la façon dont les communautés sont structurées, nous devons déterminer l'effet des différents facteurs contrôlant les propriétés de communauté. Dans cette étude portant sur des ensembles néotropicaux de chauve-souris insectivores au Panama, nous avons mesuré les effets du climat, de la structure de l'habitat et des interactions entre espèces sur trois propriétés de communauté: la richesse, l'abondance et la biomasse des espèces. Puis, avons évalué comment ces facteurs affectent les mesures d'équitabilité. Nous avons trouvés que la variation dans la composition et la richesse en espèces est reliée au climat à grande échelle et à la structure de l'habitat à petite échelle, mais que l'abondance totale n'est pas reliée au climat. L'équitabilité corrèle de façon négative et directe avec la richesse et la biomasse en espèce et de façon négative et indirecte avec l'abondance. Nous concluons qu'il est important de déterminer l'échelle à laquelle les facteurs contrôlant opèrent et la façon dont les propriétés de communauté sont interreliées pour bien comprendre la structure des communautés.
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9

Roche, Niamh. "Aspects of the ecology of insectivorous bats (Chiroptera) in temperate deciduous woodlands." Thesis, University of Warwick, 1997. http://wrap.warwick.ac.uk/36308/.

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Ecological requirements of temperate bat species have been the subject of research in recent years. Remaining native woodlands are believed to be particularly important as foraging sites for bats in Britain. However, little work has been conducted on these habitats. This thesis examines spatial and temporal variations in bat activity in woodlands in relation to a number of factors including prey availability and diversity, weather variables and vegetation density. In this thesis, preference or avoidance of a woodland microhabitat was found to be related to vegetation density of the shrub and canopy. Optimal microhabitats balance the requirements for openness (related to a bat's morphology and echolocation capabilities) and a degree of shelter (necessary for predator avoidance). Nocturnal activity of Pipistrellus pipistrellus in woodlands was investigated and where the woodland was situated in close proximity to a roost, activity was unimodal during pregnancy, bimodal during lactation, and unimodal after weaning. However, in one woodland where no maternity roost was found close-by, nocturnal activity patterns differed. Seasonal bat activity within woodlands was examined in relation to insect availability and climatic factors. Activity was found to be mainly influenced by insect availability. The weather variables regulating insect abundance vary between woodlands and may largely be a function of site characteristics. The range and diversity of available prey taxa rarely affects activity of P. pipistrellus, the most commonly encountered bat in this study. Bat detectors have been used in many habitat and landscape studies (including this one) to estimate bat activity. Until now, no direct association has been made between the number of bat passes and the density of bats present. This issue was investigated using computer simulation models. A nonlinear relationship was found between bat passes and bat density, reducing to an almost linear relationship at the low bat pass numbers typically found in the field.
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Shiflet, Lindsey Ann. "Trophic patterns of an insectivorous bat community foraging over urban and pristine streams as revealed by stable isotope and fecal analyses." Greensboro, N.C. : University of North Carolina at Greensboro, 2007. http://libres.uncg.edu/edocs/etd/1503Shiflet/umi-uncg-1503.pdf.

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Thesis (M.S.)--University of North Carolina at Greensboro, 2007.
Title from PDF t.p. (viewed Mar. 10, 2008). Directed by Matina C. Kalcounis-Rüppell; submitted to the Dept. of Biology. Includes bibliographical references (p. 24-29).
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Books on the topic "Insectivorous bats"

1

Parnaby, Harry. An interim guide to identification of insectivorous bats of South-eastern Australia. Sydney, NSW, Australia: Australian Museum, 1992.

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2

Roche, Niamh. Aspects of the ecology of insectivorous bats (Chiroptera) in temperate deciduous woodlands. [s.l.]: typescript, 1997.

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We need bats. New York: PowerKids Press, 2016.

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Lollar, Amanda. Captive Care and Medical Reference for the Rehabilitation of Insectivorous Bats. Bat Conservation Intl, 1998.

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Saintilan, Neil, ed. Australian Saltmarsh Ecology. CSIRO Publishing, 2009. http://dx.doi.org/10.1071/9780643096844.

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Australian Saltmarsh Ecology presents the first comprehensive review of the ecology and management of Australian saltmarshes. The past 10 years in particular have seen a sustained research effort into this previously poorly understood and neglected resource. Leading experts in the field outline what is known of the biogeography and geomorphology of Australian saltmarshes, their fish and invertebrate ecology, the use of Australian saltmarshes by birds and insectivorous bats, and the particular challenges of management, including the control of mosquito pests, and the issue of sea-level rise. They provide a powerful argument that coastal saltmarsh is a unique and critical habitat vulnerable to the combined impacts of coastal development and sea-level rise. The book will be an important reference for saltmarsh researchers, marine and aquatic biologists, natural resource managers, environmentalists and ecologists, as well as undergraduate students and the interested layperson.
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Huỳnh, Đặng Huy, ed. Thú rừng-mammalia Việt Nam: Hình thái và sinh học sinh thái một số loài. Hà Nội: Nhà xuất bản Khoa học tự nhiên và công nghệ, 2007.

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Book chapters on the topic "Insectivorous bats"

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Barnard, Susan M. "Insectivorous Bats." In Hand-Rearing Wild and Domestic Mammals, 96–103. Oxford, UK: Blackwell Publishing Ltd, 2008. http://dx.doi.org/10.1002/9780470385005.ch14.

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Hopkins, C. S. "Carnivorous and Insectivorous Bats." In Care and Handling of Australian Native Animals, 171–84. P.O. Box 20, Mosman NSW 2088, Australia: Royal Zoological Society of New South Wales, 1990. http://dx.doi.org/10.7882/rzsnsw.1990.007.

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Law, Bradley, Kirsty J. Park, and Michael J. Lacki. "Insectivorous Bats and Silviculture: Balancing Timber Production and Bat Conservation." In Bats in the Anthropocene: Conservation of Bats in a Changing World, 105–50. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-25220-9_5.

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Rhodes, Monika, and Darryl Jones. "The use of bat boxes by insectivorous bats and other fauna in the greater Brisbane region." In The Biology and Conservation of Australasian Bats, 424–42. P.O. Box 20, Mosman NSW 2088, Australia: Royal Zoological Society of New South Wales, 2011. http://dx.doi.org/10.7882/fs.2011.043.

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Barclay, Robert M. R. "Echolocation Strategies of Aerial Insectivorous Bats and Their Influence on Prey Selection." In Animal Sonar, 595–99. Boston, MA: Springer US, 1988. http://dx.doi.org/10.1007/978-1-4684-7493-0_60.

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Boyles, Justin G., Catherine L. Sole, Paul M. Cryan, and Gary F. McCracken. "On Estimating the Economic Value of Insectivorous Bats: Prospects and Priorities for Biologists." In Bat Evolution, Ecology, and Conservation, 501–15. New York, NY: Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-7397-8_24.

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7

Fenton, M. Brock. "Variation in Foraging Strategies in Five Species of Insectivorous Bats — Implications for Echolocation Call Design." In Animal Sonar, 607–11. Boston, MA: Springer US, 1988. http://dx.doi.org/10.1007/978-1-4684-7493-0_62.

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Warrell, Mary J., and David A. Warrell. "Rhabdoviruses: Rabies and rabies-related lyssaviruses." In Oxford Textbook of Medicine, edited by Christopher P. Conlon, 805–19. Oxford University Press, 2020. http://dx.doi.org/10.1093/med/9780198746690.003.0085.

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The Rhabdoviridae are a large family of RNA viruses, two genera of which infect animals: the genus Lyssavirus contains rabies and rabies-related viruses that cause at least 55,000 deaths annually in Asia and Africa. The risks and problems posed by rabies and other lyssaviruses vary across the world. Viruses can penetrate broken skin and intact mucosae. Humans are usually infected when virus-laden saliva is inoculated through the skin by the bite of a rabid animal, usually a dog. Although the greatest threat to man is the persistent cycle of infection in stray dogs, several other terrestrial mammal species are reservoirs of infection. In the Americas, bat viruses and also classic type 1 rabies and insectivorous bats have become the principal vectors of infection to humans in the United States of America. Elsewhere in the world, there is increasing evidence of widespread rabies-related lyssavirus infection of bats.
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"Insectivores and Bats." In Evolution of Island Mammals, 327–31. Oxford, UK: Wiley-Blackwell, 2010. http://dx.doi.org/10.1002/9781444323986.ch23.

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Schlegel, Mathias, Jens Jacob, Detlev H. Krüger, Andreas Rang, and Rainer G. Ulrich. "Hantavirus Emergence in Rodents, Insectivores and Bats." In The Role of Animals in Emerging Viral Diseases, 235–92. Elsevier, 2014. http://dx.doi.org/10.1016/b978-0-12-405191-1.00010-7.

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Conference papers on the topic "Insectivorous bats"

1

Lin, Yuan, and Nicole Abaid. "Bats Versus Bugs: Collective Behavior of Prey Decreases Predation in a Biologically-Inspired Multi-Agent System." In ASME 2013 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/dscc2013-3816.

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In this paper, we establish an agent-based model to study the impact of collective behavior of a prey species on the hunting success of predators inspired by insectivorous bats and swarming insects, called “bugs”. In the model, we consider bats preying on bugs in a three-dimensional space with periodic boundaries. The bugs follow one of the two regimes: either they swarm randomly without interacting with peers, or they seek to align their velocity directions, which results in collective behavior. Simultaneously, the bats sense their environment with a sensing space inspired by big brown bats (Eptesicus fuscus) and independently prey on bugs. We define order parameters to measure the alignment and cohesion of the bugs and relate these quantities to the cohesion and the hunting success of the bats. Comparing the results when the bugs swarm randomly or collectively, we find that collectively behaving bugs tend to align, which results in relatively more cohesive groups. In addition, cohesion among bats is induced since bats may be attracted to the same localized bug group. Due to the fact that bats need to hunt more widely for groups of bugs, collectively behaving bugs suffer less predation compared to their randomly swarming counterparts. These findings are supported by the biological literature which cites protection from predation as a primary motivator for social behavior.
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Manzo, Justin E., Emily A. Leylek, and Ephrahim Garcia. "Drawing Insight From Nature: A Bat Wing for Morphing Aircraft." In ASME 2008 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. ASMEDC, 2008. http://dx.doi.org/10.1115/smasis2008-613.

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Being the only flying mammal, bats have evolved unique flight devices affording them high maneuverability and efficiency despite their low flight speeds. By selecting bats of three different ecological niches — a highly efficient fishing bat, a nimble insectivorous forager, and a large soaring bat of the ‘flying fox’ family — passive wing shapes can be demonstrated as capable of attaining very different aerodynamic performance characteristics. The aerodynamics of man-made equivalents to these wing shapes, using thin airfoils rather than skeleton and membrane construction, are studied both computationally through a lifting-line approach and experimentally with quasistatic wind tunnel data of ‘morphed’ and ‘unmorphed’ wing shapes. Results confirm that shape inspired by the larger soaring bat has higher lift-to-drag ratios, while that of the foraging bat maintains lift at higher angles of attack than the other wings. The advantages are more pronounced by morphing, increasing both lift coefficient and lift-to-drag ratios by up to 50% for certain wings. This is validated both numerically and in the Cornell University 4′×4′ wind tunnel. Analysis of these shapes provides the first phase of wing design for use on a morphing aircraft vehicle. In order to take greater advantage of vehicle morphing, wing shapes with camber and twist distributions unique from those found in nature will evolve to suit a man-made structure. In this way, a wing shape intended for cruise may extend its practicality into highly maneuverable operations through the use of wing morphing. Starting from the bat planform shapes, a series of optimizations determines the best camber and twist distributions for effective morphing. Given a fixed degree of shape change at any point along an airfoil based on mechanism constraints, improved morphing performance can be found compared to initial assumptions of the natural shape change. Heuristic optimization employing simulated annealing determines the required morphing shapes for increased performance, broadening the abilities of each wing shape by increasing parameters such as lift, rolling moment, and endurance.
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Fan, Xiaozhou, Peter Windes, Danesh Tafti, Susheel Sekhar, Matt Bender, Andrew Kurdila, and Rolf Mueller. "Proper orthogonal decomposition of straight and level flight kinematics in an insectivorous bat." In 2018 AIAA Modeling and Simulation Technologies Conference. Reston, Virginia: American Institute of Aeronautics and Astronautics, 2018. http://dx.doi.org/10.2514/6.2018-2155.

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