A Multivariate Analysis of Systematic Relationships among Populations of the Short-Tailed Shrew (Genus Blarina) in Nebraska

Genoways, Hugh H.; Choate, Jerry R.

doi:10.1093/sysbio/21.1.106

Cited by 22 publications

(15 citation statements)

References 27 publications

(15 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Miller & Getz (1977) reported that short‐tailed shrews have broad habitat requirements but that they were most common in areas with more than 50% herbaceous cover. In agricultural areas of Great Plains habitat, shrews are confined to riparian or other mesic habitats, such as grassy roadside ditches and fences with ample ground cover and litter (Genoways & Choate 1972; Choate & Fleharty 1973). Generally, shrews are not found in areas were moisture content of the soil is insufficient to keep the air in the soil and litter saturated (Pruitt 1953, 1959; Getz 1961).…”

Section: Discussionmentioning

confidence: 99%

“…2000). Vegetation and topographic diversity, as well as practice of agriculture and road building, probably have contributed to the current pattern of restricted gene flow in the east, because shrews are not found commonly in dry, exposed habitat, dispersal is limited, and roads and streams can form formidable barriers to dispersal (Genoways & Choate 1972; Choate & Fleharty 1973; Benedict 1999). The relative topographic and climatic uniformity throughout the Central Lowlands (Fenneman 1938) plus a tolerance for drier conditions in the western phylogroup have probably contributed to the lack of structure in the western phylogroup (Graham & Semken 1976; Graham 1976).…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Phylogeography of the Northern short‐tailed shrew, Blarina brevicauda (Insectivora: Soricidae): past fragmentation and postglacial recolonization

Brant

Ortı́

2003

Molecular Ecology

View full text Add to dashboard Cite

Blarina brevicauda is distributed across the northeastern region of North America, in areas previously covered by Pleistocene glaciers. Previous molecular systematic study of the species in the genus Blarina suggested the presence of two distinct eastern and western phylogroups within B. brevicauda, in agreement with traditionally recognized semi-species. To expand the previous work, a collection of 76 individuals from 14 localities collected throughout the range of B. brevicauda was used to assess the mitochondrial (mt) cytochrome b genealogy for this species. Minimum evolution, maximum parsimony, analysis of molecular variance and nested clade analysis each supported the same conclusions of two well-differentiated and monophyletic east-west groups, separated by the Mississippi River. Denser sampling in areas immediately East of the Mississippi basin revealed further subdivision within the eastern phylogroup into an East-Central and an Appalachian clade. The western phylogroup differed from the eastern phylogroup by 2.5% mean absolute DNA sequence difference. About 65% of the genetic variance among samples was explained by the east-west subdivision alone. High haplotype diversities, low nucleotide diversities and unimodal mismatch distributions within subclades suggest recent expansion or diversification within each group. No phylogeographic structure was found within the western phylogroup, but genetic structure because of restricted gene flow and isolation by distance was inferred for the eastern group. The present distribution of B. brevicauda is best explained by past fragmentation and range expansion events during and following the Pleistocene glacial cycles.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Phylogeography of the Northern short‐tailed shrew, Blarina brevicauda (Insectivora: Soricidae): past fragmentation and postglacial recolonization

Brant

Ortı́

2003

Molecular Ecology

View full text Add to dashboard Cite

show abstract

“…Methods are now available for testing to see if other species show such a distributional pattern. Genoways and Choate (1972) used cluster analysis of a distance matrix, principal components analysis, and discriminant function analyses in a study of the short-tailed shrew, Blarina brevicaucla. Their results show that two subspecies of this shrew were found to occupy a parapatric distribution in Nebraska.…”

Section: Evoltrtionary and Systematic Implicationsmentioning

confidence: 99%

Morphometrics, Evolution, and Cytotaxonomy of Mainland Bats of the Genus Macrotus (Chiroptera: Phyllostomatidae)

Davis

Baker

1974

Systematic Biology

View full text Add to dashboard Cite

soma1 data reveal the existence of two mainland species of Macrotus that are parapatric in distribution:-Individuals can be identified to species by both chromoso~~~al features and cranial n~orphology. A stepwise multiple discriminant analysis and canonical variate analysis show tllat the two species are morphonletrically divergent. The distribution of these two taxa is proof that parapatry occurs in species with lugh vagility. If cl~romosomal data had not been available or if chronlosomal divergence had not accompanied speciation in Macrotus, this unique pattern of distribution probably would not have been detected. Allopatric, stasipatric, and centrifugal speciation are considered in light of the presently available data for Macrotus.

show abstract

“…B. brevicauda is the only insectivore re covered from all eight strata in Cheek Bend Cave. It should be noted that an abundant lit erature dealing with Blarina is inconsistent con cerning the taxonomic status of various species and subspecies of this genus (e.g., Ellis et al 1978;French 1981;Genoways and Choate 1972;George et al 1981;Graham and Semken 1976;Hall 1981;Hall and Kelson 1959). The classi fication used by Hall (1981) is followed here.…”

Section: Discussionmentioning

confidence: 99%

Diachronic variation in insectivores from Cheek Bend Cave and environmental change in the Midsouth

Klippel

Parmalee

1982

Paleobiology

View full text Add to dashboard Cite

Diachronic variation in insectivore remains from a deeply stratified cave deposit in southeastern North America is described. The paleobotanical record for the region is congruent with variation in the soricid (shrew) and talpid (mole) faunal assemblages. Both faunal and floral records reflect considerable climatic change since the full Wisconsinan in this unglaciated portion of eastern North America. Variations in the insectivore assemblages indicate the presence of a more equable climate during the late Pleistocene. Continental climates ushered in at the end of the Pleistocene resulted in a marked decrease in insectivore diversity. Relative frequency changes in taxa throughout the Holocene reflect the mid-Holocene Climatic Optimum.

show abstract

A Multivariate Analysis of Systematic Relationships among Populations of the Short-Tailed Shrew (Genus Blarina) in Nebraska

Cited by 22 publications

References 27 publications

Phylogeography of the Northern short‐tailed shrew, Blarina brevicauda (Insectivora: Soricidae): past fragmentation and postglacial recolonization

Phylogeography of the Northern short‐tailed shrew, Blarina brevicauda (Insectivora: Soricidae): past fragmentation and postglacial recolonization

Morphometrics, Evolution, and Cytotaxonomy of Mainland Bats of the Genus Macrotus (Chiroptera: Phyllostomatidae)

Diachronic variation in insectivores from Cheek Bend Cave and environmental change in the Midsouth

Contact Info

Product

Resources

About