Autumn Migration of Myotis septentrionalis in Nebraska:  Documentation of Nightly Activity, Migratory Timing, and Distance  Using Radio-telemetry

White, Jeremy A.; Freeman, Patricia W.; Otto, Hans W.; Andersen, Brett R.; Hootman, Jonathan; Lemen, Cliff A.

doi:10.13014/k2rj4gms

Cited by 5 publications

(3 citation statements)

References 3 publications

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“…This suggests the possibility that Myotis populations in the Neotropics hybridize less frequently than those in the Nearctic. Bats in the Nearctic often employ large scale migratory behavior and often occupy large ranges (Davis and Hitchcock 1965;Winhold and Kurta 2006;White et al 2017) whereas those in the Neotropics move on a smaller scale and species appear to have smaller ranges with patchy distributions (Esbérard et al 2017). These factors suggest that migratory behavior and the introgression accompanying it may result in Korstian, Stevens, Lee Jr., Baker, and Ray homogenization across Nearctic lineages while the patchy ranges and lack of migration may have accelerated speciation in the Neotropics.…”

Section: Discussionmentioning

confidence: 99%

Unraveling the Myotis Morass: Ultraconserved-Element Analysis Reveals Introgression, Cryptic Diversity, and Taxonomic Trouble in the Most Species-rich Bat Genus

Korstian¹,

Stevens²,

Lee³

et al. 2022

Preprint

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Using sequences from 2615 UCE loci and multiple methodologies we inferred phylogenies for the largest genetic dataset of New World Myotis to date. The resulting phylogenetic trees were populated with short branch lengths and widespread conflict, hallmarks consistent with rapid adaptive radiations. The degree of conflict observed in Myotis has likely contributed to difficulties disentangling deeper evolutionary relationships. Unlike earlier phylogenies based on 1-2 gene sequences, this UCE dataset places M. brandtii outside the New World clades. Introgression testing of a small subset of our samples revealed evidence of historical but not contemporary gene flow, suggesting that hybridization occurs less frequently in the Neotropics than the Nearctic. We identified several instances of cryptic lineages within described species as well as several instances of potential taxonomic over-splitting. Evidence from Central and South American localities suggests that diversity in those regions is not fully characterized. In light of the accumulated evidence of the evolutionary complexity in Myotis and our survey of the taxonomic implications from our phylogenies it is apparent that the definition of species and regime of species delimitation need to be re-evaluated for Myotis. This will require substantial collaboration and sample sharing between geneticists and taxonomists to build a system that is both robust and applicable in a genus as diverse as Myotis.

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Section: Discussionmentioning

confidence: 99%

Unraveling the Myotis Morass: Ultraconserved-Element Analysis Reveals Introgression, Cryptic Diversity, and Taxonomic Trouble in the Most Species-rich Bat Genus

Korstian¹,

Stevens²,

Lee³

et al. 2022

Preprint

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“…Remarks.-The northern long-eared myotis has been the subject of intensive study in Nebraska in recent years because the species is vulnerable to white-nose syndrome and listed as a federally threatened species (Geluso et al 2015, Lemen et al 2016a, Stein and White 2016, White et al 2017a, 2017b, Brack et al 2019. Johnson and Geluso (2017) mapped the species occurring in 14 counties in the state, with the distribution in a rough crescent shape with records along the Niobrara River in the north as far west as Sheridan County, Missouri River in the east, and Republican River in the south to as far west as Harlan County (Johnson and Geluso 2017).…”

Section: Myotis Septentrionalismentioning

confidence: 99%

Observations on the Distribution and Status of Selected Nebraska Mammals

Roehrs¹,

Benedict²,

Labedz³

et al. 2021

TNAS

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Information on the distribution and current status of 25 species or subspecies of mammals occurring in Nebraska are presented. The species covered include one shrew, an armadillo, eight bats, 10 rodents (including two subspecies of one species), three carnivores, and one artiodactyl. Distributional information reported includes the first state record for one species (Sorex nanus) and new county records for 18 species. In Nebraska, we know that mammals are shifting their geographic ranges with some extending populations into the state, whereas others are expanding their geographic ranges within the state. The current status of six additional mammalian taxa in Nebraska is documented, providing knowledge important to the conservation of these species during this time of shifting environmental conditions. The concern is that some mammals have suffered population declines since the 1940s and may have a contracting geographic range as well in the state. These species would be endangered and could be lost to the mammalian fauna of the state. Extensive data on reproduction in these mammals are presented and the taxonomy of species is updated from the 1964 Mammals of Nebraska by Jones.

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“…In the Coastal Plain, forests were used by northern myotis year-round, suggesting at least some members of the population were non-migratory. Sedentary populations of northern myotis were first reported by Griffin (1945), who recovered several banded bats < 8 km from their hibernacula, although longer-distance movements are also reported [26].…”

Section: Introductionmentioning

confidence: 98%

Seasonal roost selection and activity of a remnant population of northern myotis in Pennsylvania

et al. 2022

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The decline in northern myotis (Myotis septentrionalis) populations due to the disease white-nose syndrome (WNS) has led to the species receiving federal protection in the United States and Canada, requiring conservation of critical habitats. However, considerably more is known about summer habitat preferences of northern myotis compared to late summer through winter. Our goal was to describe the seasonal presence and habitat use of a remnant colony of northern myotis in central Pennsylvania. We radio-tagged 31 northern myotis and established 6 acoustic monitoring stations to document activity from 2017–2021. We found that roost trees used during the maternity season by reproductive females were occupied by bats during both summer (21 June–14 August) and autumn (15 August–31 October), indicating similar habitat use patterns between seasons. During this time, both males and females preferred to roost in dead and declining trees. No other variable influenced male use, but females also preferred trees located close to water and in forest stands with higher basal area than randomly located trees. Northern myotis with active transmitters never left the study area and were tracked to roosts until early November. During October and November, a female and male were tracked to an underground network of air-filled voids (the Milieu Souterrain Superficiel) we presume to be a hibernaculum. Northern myotis calls were recorded outside this roost between March and October, and bats were observed emerging from this roost during spring and autumn but not summer. Acoustic activity at this site exhibited a seasonal pattern that differed from acoustic activity near roost trees and foraging areas, with a peak of activity during late summer when northern myotis are known to swarm. These data show that northern myotis maternity roosts are used extensively outside of summer and may be vulnerable to forestry practices that occur even outside of the pup-rearing season. These data also support the growing evidence that some northern myotis hibernate outside of caves and mines.

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Autumn Migration of Myotis septentrionalis in Nebraska: Documentation of Nightly Activity, Migratory Timing, and Distance Using Radio-telemetry

Cited by 5 publications

References 3 publications

Unraveling the Myotis Morass: Ultraconserved-Element Analysis Reveals Introgression, Cryptic Diversity, and Taxonomic Trouble in the Most Species-rich Bat Genus

Unraveling the Myotis Morass: Ultraconserved-Element Analysis Reveals Introgression, Cryptic Diversity, and Taxonomic Trouble in the Most Species-rich Bat Genus

Observations on the Distribution and Status of Selected Nebraska Mammals

Seasonal roost selection and activity of a remnant population of northern myotis in Pennsylvania

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