seasonality and synchrony of reproduction in three species of nectarivorous philippines bats.differences among species and among years in reproductive seasonality (the tendency for clusters of events to fall at approximately the same point in each year) and synchrony (amount of clustering of events within a year) have been intensively studied in bats, but are difficult to assess. here, we use randomization methods with circular statistics to test for synchrony and seasonality of reproduction in three species of nectarivorous megachiropteran bats on negros island in the central philippin ...200314633285
survey for bat lyssaviruses, thailand.surveillance for lyssaviruses was conducted among bat populations in 8 provinces in thailand. in 2002 and 2003, a total of 932 bats of 11 species were captured and released after serum collection. lyssavirus infection was determined by conducting virus neutralization assays on bat serum samples. of collected samples, 538 were either hemolysed or insufficient in volume, which left 394 suitable for analysis. these samples included the following: pteropus lylei (n = 335), eonycteris spelaea (n = 45 ...200515752440
isolation of waddlia malaysiensis, a novel intracellular bacterium, from fruit bat (eonycteris spelaea).an obligate intracellular bacterium was isolated from urine samples from 7 (3.5%) of 202 fruit bats (eonycteris spelaea) in peninsular malaysia. the bacterium produced large membrane-bound inclusions in human, simian, and rodent cell lines, including epithelial, fibroblastlike, and lymphoid cells. thin-section electron microscopy showed reticulate bodies dividing by binary fission and elementary bodies in the inclusions; mitochondria surrounded the inclusions. the inclusions were positive for pe ...200515752446
identification of a lineage d betacoronavirus in cave nectar bats (eonycteris spelaea) in singapore and an overview of lineage d reservoir ecology in se asian bats.coronaviruses are a diverse group of viruses that infect mammals and birds. bats are reservoirs for several different coronaviruses in the alphacoronavirus and betacoronavirus genera. they also appear to be the natural reservoir for the ancestral viruses that generated the severe acute respiratory syndrome coronavirus and middle east respiratory syndrome coronavirus outbreaks. here, we detected coronavirus sequences in next-generation sequence data created from eonycteris spelaea faeces and urin ...201627637887
characterization of microsatellite loci in the lesser dawn bat (eonycteris spelaea).we constructed a genomic dna library enriched for ca repeat motifs in eonycteris spelaea. nine microsatellite loci were isolated and tested on a population of 39 samples from yunnan province, china. these nine loci had three to 22 alleles per locus. observed and expected heterozygosity values ranged from 0.079 to 0.963 and from 0.078 to 0.959. two loci revealed significant departure from hardy-weinberg equilibrium and no linkage disequilibrium was found between loci pairs. these microsatellites ...200821585874
reproductive biology of eonycteris spelaea, dobson (megachiroptera) in west malaysia. 19734147874
histology of the para-anal sebaceous glandular organs of the bat eonycteris spelaea (chiroptera: pteropidae). 19704190014
flight is the key to postprandial blood glucose balance in the fruit bats eonycteris spelaea and cynopterus sphinx.excessive sugar consumption could lead to high blood glucose levels that are harmful to mammalian health and life. despite consuming large amounts of sugar-rich food, fruit bats have a longer lifespan, raising the question of how these bats overcome potential hyperglycemia. we investigated the change of blood glucose level in nectar-feeding bats (eonycteris spelaea) and fruit-eating bats (cynopterus sphinx) via adjusting their sugar intake and time of flight. we found that the maximum blood gluc ...201729152179
detection of recombinant rousettus bat coronavirus gccdc1 in lesser dawn bats (eonycteris spelaea) in singapore.rousettus bat coronavirus gccdc1 (robat-cov gccdc1) is a cross-family recombinant coronavirus that has previously only been reported in wild-caught bats in yúnnan, china. we report the persistence of a related strain in a captive colony of lesser dawn bats captured in singapore. genomic evidence of the virus was detected using targeted enrichment sequencing, and further investigated using deeper, unbiased high throughput sequencing. robat-cov gccdc1 singapore shared 96.52% similarity with robat- ...202032422932
studies on b cells in the fruit-eating black flying fox (pteropus alecto).the ability of bats to act as reservoir for viruses that are highly pathogenic to humans suggests unique properties and functional characteristics of their immune system. however, the lack of bat specific reagents, in particular antibodies, has limited our knowledge of bat's immunity. here, we report a panel of cross-reactive antibodies against mhc-ii, nk1.1, cd3, cd21, cd27, and immunoglobulin (ig), that allows flow cytometry analysis of b, t and nk cell populations in two different fruit-eatin ...201930930908
high-resolution chromosome painting reveals the first genetic signature for the chiropteran suborder pteropodiformes (mammalia: chiroptera).up to now, the composition of synteny-conserved segments in chiropteran karyotypes was studied by cross-species chromosome painting with probes derived from whole human (hsa) or chiropteran chromosomes only. here, painting probes from the vespertilionid bat myotis myotis were hybridized, for the first time, onto human metaphase chromosomes. the segmental composition of bat karyotypes was further refined by cross-species painting with probes derived from flow-sorted chromosomes of tupaia belanger ...201121394511
karyotypic evolution and phylogenetic relationships in the order chiroptera as revealed by g-banding comparison and chromosome painting.bats are a unique but enigmatic group of mammals and have a world-wide distribution. the phylogenetic relationships of extant bats are far from being resolved. here, we investigated the karyotypic relationships of representative species from four families of the order chiroptera by comparative chromosome painting and banding. a complete set of painting probes derived from flow-sorted chromosomes of myotis myotis (family vespertilionidae) were hybridized onto metaphases of cynopterus sphinx (2n = ...200717310301
a comparative zoo-fish analysis in bats elucidates the phylogenetic relationships between megachiroptera and five microchiropteran families.fluorescence in-situ hybridization with human whole chromosome painting probes (wcps) was applied to compare the karyotypes of members of five bat families. twenty-five evolutionarily conserved units (ecus) were identified by zoo-fish analysis. in 10 of these 25 ecus, thorough gtg-band comparison revealed an identical banding pattern in all families studied. differences in the remaining ecus were used as characters to judge the phylogenetic relationships within chiroptera. close relationships we ...200212489830
filovirus-reactive antibodies in humans and bats in northeast india imply zoonotic spillover.bats are reservoirs for several zoonotic pathogens, including filoviruses. recent work highlights the diversity of bat borne filoviruses in asia. high risk activities at the bat-human interface pose the threat of zoonotic virus transmission. we present evidence for prior exposure of bat harvesters and two resident fruit bat species to filovirus surface glycoproteins by screening sera in a multiplexed serological assay. antibodies reactive to two antigenically distinct filoviruses were detected i ...201931671094
seroreactive profiling of filoviruses in chinese bats reveals extensive infection of diverse viruses.southern china is a hot spot of emerging infectious diseases, in which diverse species of bats dwell, a large group of flying mammals considered natural reservoirs for zoonotic viruses. recently, divergent filoviruses (fivs) have been identified in bats within this region, which pose a potential risk to public health, but the true infection situation in bats remains largely unclear. here, 689 archived bat serum samples were analyzed by enzyme-linked immunosorbent assay (elisa), western blotting, ...202031941778
the diet of the cave nectar bat (eonycteris spelaea dobson) suggests it pollinates economically and ecologically significant plants in southern cambodia.hoem thavry, julien cappelle, sara bumrungsri, lim thona, and neil m. furey (2017) the importance of the cave nectar bat eonycteris spelaea as a pollinator of economically significant crops and ecologically important plant species is increasingly documented, although information on the plants visited by this widely distributed bat species is currently confined to thailand and peninsular malaysia. we undertook a dietary study on e. spelaea by sampling faecal rain produced by a colony in kampot, s ...201731966216
pollination implications of the diverse diet of tropical nectar-feeding bats roosting in an urban cave.intense landscaping often alters the plant composition in urban areas. knowing which plant species that pollinators are visiting in urban areas is necessary for understanding how landscaping impacts biodiversity and associated ecosystem services. the cave nectar bat, eonycteris spelaea, is an important pollinator for many plants and is often recorded in human-dominated habitats. previous studies of the diet of e. spelaea relied on morphological identification of pollen grains found in faeces and ...201829607265
assessing essential trace elements in cave nectar bat (eonycteris spelaea): a study in barak valley of assam, india.this study investigated trace elements in the different organs of eonycteris spelaea, a hill cave from the bhuban hills of sonai reserve forest, cachar, assam (india). six bats were collected from the site and concentrations of four trace elements (cu, zn, fe, and mn) were examined from the tissues of liver, lungs, kidney, and patagium using graphite furnace atomic absorption spectrometer (graphite furnace model-analytic jena vario-6). the results of the study revealed that concentration of esse ...201930019209
exploring the genome and transcriptome of the cave nectar bat eonycteris spelaea with pacbio long-read the past two decades, bats have emerged as an important model system to study host-pathogen interactions. more recently, it has been shown that bats may also serve as a new and excellent model to study aging, inflammation, and cancer, among other important biological processes. the cave nectar bat or lesser dawn bat (eonycteris spelaea) is known to be a reservoir for several viruses and intracellular bacteria. it is widely distributed throughout the tropics and subtropics from india to southe ...201830247613
diversity and evolution of viral pathogen community in cave nectar bats (eonycteris spelaea).bats are unique mammals, exhibit distinctive life history traits and have unique immunological approaches to suppression of viral diseases upon infection. high-throughput next-generation sequencing has been used in characterizing the virome of different bat species. the cave nectar bat, eonycteris spelaea, has a broad geographical range across southeast asia, india and southern china, however, little is known about their involvement in virus transmission. here we investigate the diversity and ab ...201930871070
ecology of bat flies in singapore: a study on the diversity, infestation bias and host specificity (diptera: nycteribiidae).bat flies are highly-specialized, hematophagous arthropods that are globally ubiquitous. there is little published research on bat flies (diptera: nycteribiidae) in singapore and understanding the diversity of nycteribiids, host association and infestation rates can provide insight into this host-ectoparasite relationship. nycteribiids were collected from bats trapped in singapore (2011-2016) and identified using morphological keys. host-ectoparasite relationships were investigated with logistic ...202032420022
immunophenotyping monocytes, macrophages and granulocytes in the pteropodid bat eonycteris spelaea.bats are asymptomatic reservoir hosts for several highly pathogenic viruses. understanding this enigmatic relationship between bats and emerging zoonotic viruses requires tools and approaches which enable the comparative study of bat immune cell populations and their functions. we show that bat genomes have a conservation of immune marker genes which delineate phagocyte populations in humans, while lacking key mouse surface markers such as ly6c and ly6g. cross-reactive antibodies against cd44, c ...202031941952
characterization of the sleep architecture in two species of fruit bat.bats (chiroptera) are the second-most abundant mammalian order in the world, occupying a diverse range of habitats and exhibiting many different life history traits. in order to contribute to this highly underrepresented group we describe the sleep architecture of two species of frugivorous bat, the greater short-nosed fruit bat (cynopterus sphinx) and the lesser dawn fruit bat (eonycteris spelaea). electroencephalogram (eeg) and electromyogram (emg) data were recorded from multiple individuals ...201020043956
detection and molecular characterization of cryptosporidium and eimeria species in philippine bats.the genus cryptosporidium, which is an obligate intracellular parasite, infects various vertebrates and causes a diarrheal disease known as cryptosporidiosis. bats are naturally infected with zoonotic pathogens; thus, they are potential reservoirs of parasites. we investigated the species and genotype distribution as well as prevalence of cryptosporidium and eimeria in philippine bats. we captured and examined 45 bats; four were positive for cryptosporidium spp. and seven were positive for eimer ...201626833326
prevalence and genetic characterization of toxoplasma gondii infection in bats in southern china.toxoplasma gondii can infect a wide variety of warm-blooded animals, including bats. limited information on t. gondii infection in bats is available in china. the objective of the present study was to determine prevalence and genetic diversity of t. gondii infection in bats in southern china. a total of 608 bats representing 12 species, including 120 aselliscus stoliczkanus, 59 myotis chinensis, 11 miniopterus schreibersii, 53 rhinolophus affinis, 32 rhinolophus pusillus, 81 hipposideros armiger ...201424813744
influence of age and body condition on astrovirus infection of bats in singapore: an evolutionary and epidemiological analysis.bats are unique mammals that are reservoirs of high levels of virus diversity. although several of these viruses are zoonotic, the majority are not. astroviruses, transmitted fecal-orally, are commonly detected in a wide diversity of bat species, are prevalent at high rates and are not thought to directly infect humans. these features make astroviruses useful in examining virus evolutionary history, epidemiology in the host, and temporal shedding trends. our study screened for the presence of as ...201729159263
differential pollen placement on an old world nectar bat increases pollination efficiency.plant species that share pollinators are potentially subject to non-adaptive interspecific pollen transfer, resulting in reduced reproductive success. mechanisms that increase pollination efficiency between conspecific individuals are therefore highly beneficial. many nocturnally flowering plant species in thailand are pollinated by the nectar bat eonycteris spelaea (pteropodidae). this study tested the hypothesis that plant species within a community reduce interspecific pollen movement by plac ...201626482654
virulence, pathology, and pathogenesis of pteropine orthoreovirus (prv) in balb/c mice: development of an animal infection model for prv.cases of acute respiratory tract infection caused by pteropine orthoreovirus (prv) of the genus orthoreovirus (family: reoviridae) have been reported in southeast asia, where it was isolated from humans and bats. it is possible that prv-associated respiratory infections might be prevalent in southeast asia. the clinical course of prv is not fully elucidated.201729240753
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