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16 results for “Myotis daubentonii”
Data from: Habitat usage of Daubenton's bat (Myotis daubentonii), common pipistrelle (Pipistrellus pipistrellus), and soprano pipistrelle (Pipistrellus pygmaeus) in a North Wales upland river catchment
Distributions of Daubenton's bat (Myotis daubentonii), common pipistrelle, (Pipistrellus pipistrellus), and soprano pipistrelle (Pipistrellus pygmaeus) were investigated along and altitudinal gradient of the Lledr River, Conwy, North Wales, and presence assessed in relation to the water surface condition, presence/absence of bank‐side trees, and elevation. Ultrasound recordings of bats made on timed transects in summer 1999 were used to quantify habitat usage. All species significantly preferred smooth water sections of the river with trees on either one or both banks; P. pygmaeus also preferred smooth water with no trees. Bats avoided rough and cluttered water areas, as rapids may generate high‐frequency echolocation‐interfering noise and cluttered areas present obstacles to flight. In lower river regions, detections of bats reflected the proportion of suitable habitat available. At higher elevations, sufficient habitat was available; however, bats were likely restricted due to other factors such as a less predictable food source. This study emphasizes the importance of riparian habitat, bank‐side trees, and smooth water as foraging habitat for bats in marginal upland areas until a certain elevation, beyond which bats in these areas likely cease to forage. These small‐scale altitudinal differences in habitat selection should be factored in when designing future bat distribution studies and taken into consideration by conservation planners when reviewing habitat requirements of these species in Welsh river valleys, and elsewhere within the United Kingdom.
On following pages: 477. Fringed Long-footed Myotis (Myotis fimbriatus); 478. Rickett's Big-footed Myotis (Myotis pilosus); 479. Mandelli's Myotis (Myotis sicarius); 480. Bechstein's Myotis (Myotis bechsteinii): 481. Long-tailed Myotis (Myotis longicaudatus); 482. Daubenton's Myotis (Myotis daubentonii); 483. Reddish Myotis (Myotis soror); 484. Fraternal Myotis (Myotis fraten; 485. Bokhara Myotis (Myotis bucharensis); 486. Lesser Myotis (Myotis blythii); 487. Greater Myotis (Myotis myotis); 488. Maghreb Myotis (Myotis punicus); 489. Natterer's Myotis (Myotis nattereri); 490. Cryptic Myotis (Myotis crypticus); 491. Schaub's Myotis (Myotis schaubi); 492. Escalera's Myotis (Myotis escaleral), 493. Zenati Myotis (Myotis zenatius); 494. Peking Myotis (Myotis pequinius); 495. Far Eastern Myotis (Myotis bombinus); 496. Large Myotis (Myotis chinensis). in Vespertilionidae
On following pages: 477. Fringed Long-footed Myotis (Myotis fimbriatus); 478. Rickett's Big-footed Myotis (Myotis pilosus); 479. Mandelli's Myotis (Myotis sicarius); 480. Bechstein's Myotis (Myotis bechsteinii): 481. Long-tailed Myotis (Myotis longicaudatus); 482. Daubenton's Myotis (Myotis daubentonii); 483. Reddish Myotis (Myotis soror); 484. Fraternal Myotis (Myotis fraten; 485. Bokhara Myotis (Myotis bucharensis); 486. Lesser Myotis (Myotis blythii); 487. Greater Myotis (Myotis myotis); 488. Maghreb Myotis (Myotis punicus); 489. Natterer's Myotis (Myotis nattereri); 490. Cryptic Myotis (Myotis crypticus); 491. Schaub's Myotis (Myotis schaubi); 492. Escalera's Myotis (Myotis escaleral), 493. Zenati Myotis (Myotis zenatius); 494. Peking Myotis (Myotis pequinius); 495. Far Eastern Myotis (Myotis bombinus); 496. Large Myotis (Myotis chinensis).
Data from: What you need is what you eat? Prey selection by the bat Myotis daubentonii
Optimal foraging theory predicts that predators are selective when faced with abundant prey, but become less picky when prey gets sparse. Insectivorous bats in temperate regions are faced with the challenge of building up fat reserves vital for hibernation during a period of decreasing arthropod abundances. According to optimal foraging theory, prehibernating bats should adopt a less selective feeding behaviour – yet empirical studies have revealed many apparently generalized species to be composed of specialist individuals. Targeting the diet of the bat Myotis daubentonii, we used a combination of molecular techniques to test for seasonal changes in prey selectivity and individual-level variation in prey preferences. DNA metabarcoding was used to characterize both the prey contents of bat droppings and the insect community available as prey. To test for dietary differences among M. daubentonii individuals, we used ten microsatellite loci to assign droppings to individual bats. The comparison between consumed and available prey revealed a preference for certain prey items regardless of availability. Nonbiting midges (Chironomidae) remained the most highly consumed prey at all times, despite a significant increase in the availability of black flies (Simuliidae) towards the end of the season. The bats sampled showed no evidence of individual specialization in dietary preferences. Overall, our approach offers little support for optimal foraging theory. Thus, it shows how novel combinations of genetic markers can be used to test general theory, targeting patterns at both the level of prey communities and individual predators.
FIG. 4 in Small scale habitat preferences of Myotis daubentonii, Pipistrellus pipistrellus, and potential aerial prey in an upland river valley
FIG. 4. Relationship between aerial insect number (pooled for altitude and all habitat types) with air temperature (r² = 0.092)
F. 7 in Small scale habitat preferences of Myotis daubentonii, Pipistrellus pipistrellus, and potential aerial prey in an upland river valley
F. 7. Bat activity expressed as 0 ± SD bat passes hr-1 in relation to habitat type (water state) of both M. daubentonii and IG P. pipistrellus, pooled for all four altitudes
FIG. 6 in Small scale habitat preferences of Myotis daubentonii, Pipistrellus pipistrellus, and potential aerial prey in an upland river valley
FIG. 6. Percentage of most prevalent aerial insects found during the 40 nights of sweep net sampling along river Wharfe. Samples been pooled for altitude and habitat type. Insect families represented by <0.1 % not shown
FIG. 3 in Small scale habitat preferences of Myotis daubentonii, Pipistrellus pipistrellus, and potential aerial prey in an upland river valley
FIG. 3. Mean ± SD of number of aerial insects caught with sweep net above water surface (and over grass = control), pooled for all four altitudes (n = 40 nights)
FIG. 5 in Small scale habitat preferences of Myotis daubentonii, Pipistrellus pipistrellus, and potential aerial prey in an upland river valley
FIG. 5. Relationship between numbers of aerial insects caught with a sweep net (pooled for all altitudes and habitat types) above the water surface with minimum wind speed
FIG. 2 in Small scale habitat preferences of Myotis daubentonii, Pipistrellus pipistrellus, and potential aerial prey in an upland river valley
FIG. 2. Wind direction (degrees) expressed as windroses at for 10 nights from highest (a) to lowest (d) altitudes along river Wharfe
Data from: Habitat usage of Daubenton's bat (Myotis daubentonii), common pipistrelle (Pipistrellus pipistrellus), and soprano pipistrelle (Pipistrellus pygmaeus) in a North Wales upland river catchment
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Data from: What you need is what you eat? Prey selection by the bat Myotis daubentonii
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Data from: An integrative approach to detect subtle trophic niche differentiation in the sympatric trawling bat species Myotis dasycneme and Myotis daubentonii
Bats are well known for species richness and ecological diversity thus they provide a good opportunity to study relationships and interaction between species. To assess interactions we consider distinct traits which are likely to be triggered by niche shape and evolutionary processes. We present data on the trophic niche differentiation between two sympatric European trawling bat species, Myotis dasycneme and M. daubentonii, incorporating a wide spectrum of methodological approaches. We measure morphological traits involved in foraging and prey handling performance including bite force, weight lifting capacity and wing morphology. We then measure resulting prey consumption using both morphological and molecular diet analysis. These species closely resemble each other in morphological traits however, subtle but significant differences were apparent in bite force and lift capacity which are related to differences in basic body and head size. Both morphological and molecular diet analyses show strong niche overlap. We detected subtle differences in less frequent prey items, as well as differences in the exploitation of terrestrial and aquatic-based prey groups. M. dasycneme feeds more on aquatic prey, like Chironomidae and their pupal stages, or the aquatic moth Acentria ephemerella. M. daubentonii feeds more on terrestrial prey, like Brachycera, or Coleoptera. This suggests that these bats use different micro-habitats within the habitat where they co-occur.
Data from: An integrative approach to detect subtle trophic niche differentiation in the sympatric trawling bat species Myotis dasycneme and Myotis daubentonii
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Virus- and interferon alpha-induced transcriptomes of cells from the microbat Myotis daubentonii
GEO Series GSE121301. Myotis daubentonii. 18 samples. Type: Expression profiling by high throughput sequencing.
Virus- and interferon alpha-induced smallRNA-Seq transcriptomes of cells from the microbat Myotis daubentonii
GEO Series GSE132336. Myotis daubentonii. 18 samples. Type: Non-coding RNA profiling by high throughput sequencing.
FIG. 1 in Small scale habitat preferences of Myotis daubentonii, Pipistrellus pipistrellus, and potential aerial prey in an upland river valley
FIG. 1. River Wharfe hydrological catchment and contiguous watercourses alongside four main sampling areas within the Yorkshire Dales National Park. AMSL = Above Mean Sea Level. (A) Special Protected Areas (SPA's), (B) Special Areas of Conservation (SAC's) and (C) Sites of Special Scientific Interest (SSSI's) within the Yorkshire Dales National Park (YDNP)
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