| support for the allotonic frequency hypothesis in an insectivorous bat community. | the allotonic frequency hypothesis proposes that certain insectivorous bat species can prey upon moths that can hear bat echolocation calls by using echolocation frequencies outside the sensitivity range of moth ears. the hypothesis predicts that the peak frequencies of bat echolocation calls are correlated with the incidence of moths in the diets of these bats. the aim of this study was to test this prediction on a bat community dominated by bats using low duty cycle echolocation calls, i.e. ae ... | 2003 | 12647192 |
| karyotypic evolution in malagasy flying foxes (pteropodidae, chiroptera) and their hipposiderid relatives as determined by comparative chromosome painting. | pteropodidae and hipposideridae are 2 of the 9 chiropteran families that occur on madagascar. despite major advancements in the systematic study of the island's bat fauna, few karyotypic data exist for endemic species. we utilized g- and c-banding in combination with chromosome painting with myotismyotis probes to establish a genome-wide homology among malagasy species belonging to the families pteropodidae (pteropus rufus 2n = 38; rousettus madagascariensis, 2n = 36), hipposideridae (hipposider ... | 2016 | 27256929 |
| correlated genetic and ecological diversification in a widespread southern african horseshoe bat. | the analysis of molecular data within a historical biogeographical framework, coupled with ecological characteristics can provide insight into the processes driving diversification. here we assess the genetic and ecological diversity within a widespread horseshoe bat rhinolophus clivosus sensu lato with specific emphasis on the southern african representatives which, although not currently recognized, were previously described as a separate species r. geoffroyi comprising four subspecies. sequen ... | 2012 | 22384108 |
| the allometry of echolocation call frequencies of insectivorous bats: why do some species deviate from the pattern? | the peak echolocation frequency of insectivorous bats generally declines as body size increases. however, there are notable exceptions to this rule, with some species, such as rhinolophus clivosus, having a higher than expected peak frequency for their body size. such deviations from allometry may be associated with partitioning of foraging habitat (the foraging habitat hypothesis) or insect prey (the prey detection hypothesis). alternatively, the deviations may be associated with the partitioni ... | 2007 | 17345101 |
| paramyxo- and coronaviruses in rwandan bats. | a high diversity of corona- and paramyxoviruses have been detected in different bat species at study sites worldwide, including africa, however no biosurveillance studies from rwanda have been reported. in this study, samples from bats collected from caves in ruhengeri, rwanda, were tested for the presence of corona- and paramyxoviral rna using reverse transcription pcr assays. positive results were further characterized by dna sequencing and phylogenetic analysis. in addition to morphological i ... | 2019 | 31269631 |
| it's not all about the soprano: rhinolophid bats use multiple acoustic components in echolocation pulses to discriminate between conspecifics and heterospecifics. | acoustic communication plays a pivotal role in conspecific recognition in numerous animal taxa. vocalizations must therefore have discrete acoustic signatures to facilitate intra-specific communication and to avoid misidentification. here we investigate the potential role of echolocation in communication in horseshoe bats. although it has been demonstrated that echolocation can be used to discriminate among con- and hetero-specifics, the specific acoustic cues used in discrimination are still re ... | 2018 | 30020963 |
| testing the sensory drive hypothesis: geographic variation in echolocation frequencies of geoffroy's horseshoe bat (rhinolophidae: rhinolophus clivosus). | geographic variation in sensory traits is usually influenced by adaptive processes because these traits are involved in crucial life-history aspects including orientation, communication, lineage recognition and mate choice. studying this variation can therefore provide insights into lineage diversification. according to the sensory drive hypothesis, lineage diversification may be driven by adaptation of sensory systems to local environments. it predicts that acoustic signals vary in association ... | 2017 | 29186147 |