Mensural Discrimination of Chromosomally Characterized Peromyscus oreas and P. maniculatus

Allard, Marc W.; Gunn, Scott J.; Greenbaum, Ira F.

doi:10.2307/1381484

Cited by 13 publications

(13 citation statements)

References 9 publications

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“…We used dental or skull characters to identify shrews and voles. We used a tail-length threshold of 96 mm to separate adult P. keeni from P. maniculatus (Allard et al, 1987). In addition, we identified juveniles (<16 g) with undamaged tails 85 mm as P. maniculatus.…”

Section: Field and Laboratory Methodsmentioning

confidence: 99%

Response of terrestrial small mammals to varying amounts and patterns of green-tree retention in Pacific Northwest forests

Gitzen

West

Maguire

et al. 2007

Forest Ecology and Management

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Section: Field and Laboratory Methodsmentioning

confidence: 99%

Response of terrestrial small mammals to varying amounts and patterns of green-tree retention in Pacific Northwest forests

Gitzen

West

Maguire

et al. 2007

Forest Ecology and Management

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“…In many istances, mensural and cranial characteristics, with subjective morphological raits such as pelage coloration and tail penciling, are used to differentiate between hese species. However, for some sympatric species of Peromyscus, ranges of lensural characteristics overlap, making it difficult to assign certain individuals ) species (Engstrom et al 1982, Thompson and Conley 1983, Allard et al 1987.…”

Section: Introductionmentioning

confidence: 99%

“…Several researchers have differentiated between similar-looking, sympatric species of Peromyscus using discriminant function analyses of external or cranial measurements (Choate 1973, Choate et al 1979, Stromberg 1979, Feldhamer et al 1983, Thompson and Conley 1983, Allard et al 1987. While this method is valid for identifying individuals from sympatric Peromyscus populations, results differ among geographic areas.…”

Section: Introductionmentioning

confidence: 99%

Mensular discrimination between sympatric Peromyscus leucopodus and Peromyscus maniculatus in southern Illinois

Sternburg¹,

Feldhamer²

1997

Acta Theriol.

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. 1997. Mensural discrimination between sympatric Peromyscus leucopus and P. maniculatus in southern Illinois. Acta Theriologica 42: 1-13.A total of 383 Peromyscus was collected from southern Illinois to determine morphological characteristics useful in identifying individuals as either P. leucopus (Rafinesque, 1818) or P. maniculatus (Wagner, 1845). Polyacrylamide gel electrophoresis of salivary amylase was used to positively identify all specimens. No univariate morphological character accurately discriminated between the two species because of a high degree of intraspecific variation. Stepwise discriminant function analysis of external characters correctly classified 97.9% of subadults to species. The most important external character was the tail length/body length ratio. This ratio was also the most important factor in discrimination of adults; the function correctly classified 98.6% of individuals. Considering skull measurements of adults, 9 cranial characters were needed to differentiate between the two species, with a correct classification of 98.9%. For old adults, all specimens were classified correctly using 5 cranial characters. There was no fast, easy, accurate method to discriminate between these species 100% of the time in the field.

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“…Stepwise discriminant function analysis, using the DISCRIM programme of SPSS (Norusis/SPSS 1994), was performed on 24 cranial measurements to predict species membership for each specimen, and to reduce the number of characters needed to discriminate between the three species (Allard et al 1987). The criteria used for entering and removing variables from the stepwise discriminant function was minimization of Wilks' lambda, the F-test to enter or remove variables being set to 1.0 (default value) (Norusis/SPSS Inc. 1994).…”

Section: Methodsmentioning

confidence: 99%

Discriminant analysis of skull morphometric characters in Apodemus sylvaticus, A. flavicollis, and A. alpicola (Mammalia; Rodentia) from the Alps

Reutter¹,

Hausser²,

Vogel³

1999

Acta Theriol.

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. 1999. Discriminant analysis of skull morphometric characters in Apodemus sylvaticus, A. flavicollis, and A. alpicola (Mammalia; Rodentia) from the Alps. Acta Theriologica 44: 299-308.A total of 108 Apodemus skulls from Switzerland, Austria, Italy, France and Germany was studied to determine morphological characteristics useful in identifying individuals as Apodemus sylvaticus (Linnaeus, 1758), A. flavicollis (Melchior, 1834) or A. alpicola Heinrich, 1952. The original assignment of the samples to the three species was based on molar cusp morphology, body proportions, pelage coloration, and allozyme analysis. The 24 measured cranial characters used together accurately discriminated between the three species and correctly classified 100% of the individuals to species. A stepwise discriminant function analysis showed that 6 cranial characters are sufficient to differentiate between the three species, with a correct classification above 97%. Fisher's linear discriminant function coefficients can be used directly for classification of unknown specimens.

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Mensural Discrimination of Chromosomally Characterized Peromyscus oreas and P. maniculatus

Cited by 13 publications

References 9 publications

Response of terrestrial small mammals to varying amounts and patterns of green-tree retention in Pacific Northwest forests

Response of terrestrial small mammals to varying amounts and patterns of green-tree retention in Pacific Northwest forests

Mensular discrimination between sympatric Peromyscus leucopodus and Peromyscus maniculatus in southern Illinois

Discriminant analysis of skull morphometric characters in Apodemus sylvaticus, A. flavicollis, and A. alpicola (Mammalia; Rodentia) from the Alps

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