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Monthly samples of arthropod remains (n = 1,190 culled parts) collected over a year from under a Nycteris thebaica night roost in the Kenneth Stainbank Nature Reserve (South Africa) show that prey eaten by bats vary significantly by order but not by season. Nevertheless, there was a significant interaction between the prey category and season, suggesting that these two factors are not independent from each other. Coleoptera (49.6% in the culled parts, calculated as percent composition) dominated in spring (September-November), Orthoptera (38.8%) in summer (December-February), Hemiptera (42.8%) in autumn (March-May), and Lepidoptera (36.3%) in winter (June-August). The diet also included a frog and a small fish (n = 2 parts).
6
63%
Muzeum i Instytut Zoologii PAN w Warszawie koordynuje badania wykorzystujące kod paskowy DNA, wykonywane w ramach powstałego Krajowego Banku DNA Roślin, Grzybów i Zwierząt.W skład tego konsorcjum naukowego wchodzi na razie 5 instytutów. Barkoding może przynosić nieocenioną pomoc w badaniach gatunkowej różnorodności biologicznej, w botanice, zoologii, mikologii oraz w naukach aplikacyjnych: rolnictwie, leśnictwie, medycynie, weterynarii, naukach o żywności, ochronie przyrody i innych.
Traditionally, morphometric data have consisted of distances, angles, or ratios, and have been considered inappropriate for cladistic analyses. Recently, geometric morphometrics, based on homologous landmark point-coordinates, has provided a number of advantages over traditional morphometric data and methods, including the possibility that phylogenetically informative characters and character-states may be extracted and used in cladistic analyses. Using two data sets of 3-dimensional point coordinates collected from skulls of bats, we empirically evaluate this possibility. Partial warps were extracted from the point-coordinate matrix, and these were then re-coded by gap-coding, for use in the cladistic analyses. In the case of samples from Eidolon helvum populations (two mainland localities and four islands in the Gulf of Guinea), analyzing males and females separately, our analyses based on these data were unable to detect consistent phylogeographic patterns among the populations. In the case of samples from plecotine bat species, these analyses produced a consensus cladogram showing considerable concordance with an earlier cladistic analysis by us of this group. In both cases, our results reflect those of earlier studies (based on both morphologic and genetic data), suggesting that the data and analytic techniques described herein may have interesting utility in cladistic analyses.
Differences in skull morphology between two cryptic species of bat, Pipistrellus pipistrellus (n = 14) and P. pygmaeus (n = 15), originating from Great Britain, were investigated. Four different data sets were analysed: (1) 23 landmarks and (2) 26 landmarks on the dorsal and ventral sides of the cranium, respectively, (3) 49 landmarks on the upper jaw, and (4) 34 landmarks on the labial side of the mandible. For almost all data sets, when compared within sex groups, P. pipistrellus were significantly larger than P. pygmaeus; the biggest difference being observed in the mandible size. Interspecific differences in shape, analysed by Principal Component Analysis and Discriminant Function Analysis (DFA) of the Procrustes superimposed landmarks, were also mostly visible in the mandible, and were related to dietary differences between the species. For example, the longer and more upright canines of P. pipistrellus allow them to pierce harder prey, the bigger molars ease its processing, and the shortened body of the mandible and the more developed coronoid process presumably generate a stronger bite. The shape and size of the mandible proved to be a good characteristic for distinguishing both cryptic taxa. A procedure for estimating missing landmarks for 3D geometric morphometric purposes was created. Our procedure of finding the missing landmarks had no effect on the within-group loss of variation. DFA of data sets with reconstructed versus orginal (but reduced) landmarks yielded similar results (three versus two misclassified specimens in leave-one-out cross-validation).
Swarming bat activity was monitored at three caves at elevations ranging from 880 m to 1,907 m above sea level in the Carpathian Mountains, using an infrared light barrier with data-logger, a video camera with a night-scope system, and subsequently by mist netting. A total of 6,175 bats of 19 species was captured, and over 70,000 passes through cave openings were registered. Caves differed in bat species richness, sex ratio, abundance of particular species and species composition. Peak species richness was observed in the mid-elevation cave. Bat activity was high in all caves, but declined with increasing altitude. Swarming activity occurred earlier at high elevation than at lower elevations. Activity of boreal-alpine species, such as Eptesicus nilssonii, peaked at the start of the swarming period, that of species typical of lower elevations, such as Myotis emarginatus, peaked in the middle of the swarming season. In a few species, males showed a significant preference for higher altitude caves, in contrast to females. A similar pattern was observed in the proportion of adults to juveniles, which increased with increasing elevation. Our results also suggest that M. brandtii and M. alcathoe were more often encountered at lower elevations, M. mystacinus (sensu stricto) at higher ones.
Nietoperzowa Cave in southern Poland has more than 30 subfossils of mouse-eared bats of known age (820 ± 25 years BP). If DNA has been preserved in a useable fashion in these fossils, they will provide unique opportunities for studying historic population genetics of these animals. We sequenced the entire cytochrome b gene (1,140 bp) from seven subfossil and 56 contemporary individuals of mouse-eared bats from Europe and the Caucasus Mts. Our phylogenetic estimates, combined with a low level of genetic differentiation (2.7%) suggest that M. myotis and M. oxygnathus recently diverged and are distinct at the subspecies level. We also included a fragment of mitochondrial hypervariable region (292 bp) from contemporary mouse-eared bats in our analyses, and noted that among eight haplogroups recorded in Europe and the Caucasian Mts., haplogroup D (recognized as oxygnathus) probably arose in the Crimean refugium and evolved in a steppe landscape. The Balkan stock (haplogroup F) was also successful and dispersed over extended areas. Individuals possessing this haplogroup can be found from the northern part of Apennine Peninsula to southern Poland. On the other hand, during the last ice age, individuals with haplogroup A (described as myotis) most likely found refugia in Iberia. As the glaciers retreated north, these individuals migrated north of the Alps to central Europe (and then to the Balkans). As this group has much stronger affinities with forests than mouse-eared bats from southern parts of Europe, the dispersal of these individuals would have followed the northern migration of deciduous trees in this area. The Carpathian Basin is an area of mixing for several haplogroups from different refugia, including those in Iberia, Apennine Peninsula, Balkans, and the Crimea. Nuclear RAG2 sequence data revealed reciprocal hybridization events of both historic and recent origins. Our results document for the first time that both taxa were present north of the Carpathian Mts. for at least the past 800 years (ca. 400 generations). These are the first subfossil bats from which DNA has been extracted and sequenced, opening new possibilities for future research. Finally, these data highlight the importance of large phylogeographic surveys even among very common taxa.
The serotine bat, Eptesicus serotinus is the most frequently rabies-infected (European bat lyssavirus 1-type, EBLV-1) bat species in Europe. To confirm Lyssavirus infection of this bat in Poland, we tested for the presence of rabies virus RNA from oropharyngeal swabs using RT-PCR. There was a 0.9% (two out of 212 individuals) level of infection within the overall population of serotine bats studied. However, an appreciation of the potential for pathogen transmission and disease risk requires an understanding of the dispersal of the primary host, and any large-scale geographic barriers that may impede gene flow. Thus, we also studied the patterns of bat dispersal via population genetics using nuclear (seven microsatellite loci) and mitochondrial (mtDNA control region) markers, examined in 12 subpopulations distributed across the country. Molecular analyses of microsatellite loci indicated high genetic diversity at all sites (heterozygosity observed, Ho = 0.53–0.78), and extremely weak genetic structure in the Polish population of the species. The overall FST was 0.012 (95% confidence interval: 0.006–0.020), and pairwise values ranged from 0.00 to 0.05. Only 22% of individuals were assigned to the subpopulation from which they were sampled. The Bayesian approach implemented in STRUCTURE also confirmed that all examined subpopulations should be treated as a single group, indicating a high level of gene flow. There was some evidence for female philopatry (genetic differentiation was greater in maternally-inherited mtDNA than nuclear DNA) and male-biased dispersal, e.g., Ho and the variance of mean assignment were significantly higher in males than in females. Twelve individuals (seven females and five males) were identified as potential first generation migrants. Their migration routes ranged from 60–283 km in females (fi01_35.gif ± SE = 177.9 ± 29.37) to 27–385 km in males (206.4 ± 58.95); surprisingly, no sexual differences were observed and this finding suggests that female-mediated gene flow may occur. MtDNA also produced a strong genetic signal for the demographic expansion (Fu's FS statistics, FS = -26.30, P < 0.01 and a star-shaped haplotype network), which took place roughly 33,000 years BP, i.e., before the Last Glacial Maximum. The genetic uniformity of the Polish population implies that there is no migration barrier to EBLV-1, at least within the country, and the potential threat of rabies virus spreading via migration of infected animals may be higher than previously thought.
This article provides morphological and molecular characteristics of Punctodera storiei Brzeski, 1998. Comparison of partial sequences of 18S and 28S rDNA genes from P. stonei sampled in Poland and Punctodera sp. from Canada showed their 100% similarity. This is the first report on the occurrence of P. stonei outside of Europe. We provide data on morphology of males and 2nd stage juveniles of this species and an identification key to males of the genus Punctodera Mulvey et Stone, 1976. Moreover, the paper presents evolutionary relationships of P. stonei within the family Heteroderidae.
Otomops martiensseni is sparsely distributed throughout sub-Saharan Africa and southwestern Arabia (Yemen). Otomops madagascariensis from the dry portions of Madagascar is widely recognised to be a distinct species. Based on mitochondrial DNA sequences of the cytochrome b gene (1,004 base pairs; n = 50) and the control region (D-loop, 290 base pairs; n = 52), two Oriental outgroup species (O. wroughtoni and O. cf. formosus) formed a monophyletic clade that was the sister group to the Afro-Malagasy taxa, composed of O. martiensseni and O. madagascariensis. Within the Afro-Malagasy clade, we discovered three well-supported but genetically similar clades (inter-clade genetic distances of 3.4–4.4%) from 1) north-eastern Africa and Arabia, 2) African mainland except northeast Africa, and 3) Madagascar. Taken together, haplotype networks, estimated divergence times, regional species richness and historical demographic data tentatively suggested dispersal from Asia to Africa and Madagascar. To understand ecological determinants of phylogeographic, biogeographic and genetic structure, we assessed the potential distribution of O. martiensseni throughout sub-Saharan Africa with ecological niche modelling (MaxEnt) based on known point localities (n = 60). The species is predicted to occur mainly in woodlands and forests and in areas of rough topography. Continuity of suitable habitats supported our inferred high levels of continental gene flow (relatively low genetic distances), and suggested that factors other than habitat suitability have resulted in the observed phylogeographic structure (e.g., seasonal mass migrations of insects that might be tracked by these bats). Based on a Bayesian relaxed clock approach and two fossil calibration dates, we estimated that African and Oriental clades diverged at 4.2 Mya, Malagasy and African clades at 1.5 Mya, and African clades 1 and 2 at 1.2 Mya. Integrating phylogenetic, phylogeographic, population genetic and ecological approaches holds promise for a better understanding of biodiversity patterns and evolutionary processes.
A new species of Rhinolophus in the pusillus group is described from Ratchaburi, Kamphaeng Phet and Loei Provinces where it was found in evergreen forest at elevations ranging from 550 to 1,320 m a.s.l. It is distinguished from R. shortridgei and other similar species in the same group by its broad, parallel-sided sella, which is squared-off at the tip, relatively large body size with a forearm length of 42.2–44.1 mm, and bulbous rostral swellings. The echolocation frequency from hand-held individuals is 84.1–93.0 kHz. Bayesian analyses of a 654 bp of cytochrome oxidase subunit I (DNA barcode), and an 878 bp fragment of cytochrome b also support differences at the species level. Three specimens from Loaung Namtha, Lao PDR are referred to this new species based on DNA barcodes. Based on distinctive DNA barcodes and craniodental morphology, the taxon refulgens, is here regarded as a separate species from R. lepidus. Morphological comparisons between similar species are discussed and notes on ecology included.
Since its description in 2001 Alcathoe's myotis (Myotis alcathoe) was recorded from several locations across Europe. Here we describe the first records of this species from Germany, Poland, Albania, and from the European part of Turkey, including the northernmost locality in central Germany (51°23′N, 11°01′E). Compilation of all up-to-date records shows that M. alcathoe has a wide European distribution although it seems to be rare at most places. The habitats where the bat was recorded are natural, moist and deciduous forests with old trees and water streams as can be found, for example, in canyons or forests of alluvial origin. Such habitats suggest that the species probably has a more continuous and wider distribution than currently known and might be expected to occur even further to the North.
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