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Michael R. Schwemm

Michael R. Schwemm
U.S. Fish and Wildlife Service · Southern Nevada Fish and Wildlife Office, Las Vegas

PhD, Oklahoma State University

About

24
Publications
10,513
Reads
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98
Citations
Additional affiliations
June 2015 - June 2016
U.S. Fish and Wildlife Service
Position
  • Research Fish Biologist
January 2014 - June 2015
University of New Mexico
Position
  • PostDoc Position
August 2012 - December 2013
Oklahoma State University - Oklahoma City
Position
  • Research Associate

Publications

Publications (24)
Chapter
Full-text available
Case study of translocation of Moapa dace (Moapa coriacea) into the South Fork of the Muddy River, Nevada, USA.
Article
We report results from a 3-year field investigation to limit hybridization between native and nonnative suckers in 2 small tributaries of the Gunnison River basin, Delta County, Colorado. Upstream movement to spawning habitat was selectively impeded by picket weir in intermittent Cottonwood Creek. There, native suckers were identified based on morp...
Technical Report
Full-text available
This report synthesize the current status of the two endangered Klamath suckers, as well as explores possible future scenarios.
Article
The Neosho Smallmouth Bass (Micropterus dolomieu velox) is endemic to Arkansas River tributaries originating in the Ozark Highlands and Boston Mountains. Although morphologically and genetically distinct from other Smallmouth Bass (SMB) populations, conservation‐genetic status of Neosho SMB is largely unknown. To assist in filling this data gap, we...
Article
The North American fish genus Macrhybopsis (Teleostei: Cyprinidae) as presently conceived comprises 12 species and occurs in much of interior eastern North America. Variation in the mitochondrial ND2 gene and the nuclear S7 intron 1 reveal conflicting gene-tree relationships for deeper nodes, which are assumed to represent past introgression and he...
Article
Full-text available
Obolopteryx Cohn et al. 2014, formerly Dichopetala Rehn and Hebard 1914, is a newly erected genus of North American phaneropterine katydids. Here, we provide the first molecular phylogeny for the genus Obolopteryx and compare our results to previous morphological studies. We used two mitochondrial genes (COI and Cytb) to resolve relationships in th...
Technical Report
Full-text available
Stocking black basses (Micropterus spp.) is a common practice used to increase angling opportunities in impoundments; however, when non-native black basses are introduced they often invade riverine habitats where they threaten the persistence of other fishes, including native black basses. Neosho Smallmouth Bass (M. dolomieu velox) is endemic to po...
Article
A repeated pattern in North American fishes is species having geographic ranges consisting of two disjunct, widely separated areas of distribution, one in previously glaciated northern areas and one in the unglaciated Ozarks. We used phylogenetic analyses of mitochondrial DNA (ND2 and cyt b) and a nuclear DNA sequence (S7 intron 1) to examine the h...
Article
Full-text available
The Nocomis biguttatus species group ranges widely across North America from the Red River in Oklahoma and Arkansas north to Minnesota and east-west from Wyoming to Ontario. The group includes three traditionally recognized allopatric species: the wide-ranging N. biguttatus and two geographically more restricted species, N. asper from the western O...
Article
Human pressures primarily associated with urbanization, forestry practices, over-mining of groundwater, and reservoir construction threaten the exceptional aquatic endemism of the Ouachita Highlands of southeastern Oklahoma and southwestern Arkansas, USA. At present, there is a need for hypervariable markers useful for understanding population stru...
Article
We describe 13 diploid microsatellite markers for the North American paddlefish (Polyodon spathula, Polyodontidae), a declining species that supports a significant recreational fishery and, because of its antiquity, is unusually important in the effort to preserve biodiversity. We tested these markers on 30 individuals from a mainstream reservoir o...
Article
Sonic transmitters were affixed to 10 large (40.4-51.4 cm TL) adult bonytail Gila elegans in 2003 from Cibola High Levee Pond, a small, isolated backwater adjacent to the lower Colorado River in Arizona and California. Point and paired directional observations showed that all marked adult bonytail occupied interstices of large riprap during daytime...
Article
Full-text available
We describe eight tetra-nucleotide microsatellite markers for the leopard darter (Percina pantherina), a federally threatened percid fish endemic to Oklahoma and Arkansas. We tested these markers on 42 individuals from two localities and provide summary statistics on population variability. Eight loci yielded 2–12 alleles per locus. These markers c...
Technical Report
Full-text available
The Blue River supports a unique mix of upland fishes from the Ozarks and a proposed pre-glacial Ouachita River that encompasses most of the highlands in the present Red River Basin of Oklahoma and SW Arkansas. We analyzed mtDNA sequence variation in a subset of five of these species with an emphasis on assessing genetic distinctiveness of the Blue...

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