Systematic Implications of Karyotypic and Morphologic Variation in Mainland Peromyscus from the Pacific Northwest

Gunn, Scott J.; Greenbaum, Ira F.

doi:10.2307/1380882

Cited by 28 publications

(19 citation statements)

References 15 publications

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“…The specific status of P. areas has been further supported by morphologic Allard et al 1987;Gunn and Greenbaum, 1986;Sullivan et al, 1990), and electrophoretic (Calhoun and Greenbaum, 1991) evidence.…”

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confidence: 83%

“…Despite considerable evidence supporting the specific status of P. areas (Dice, 1949;J ohnson and Ostenson, 1959;Liu, 1954;Sheppe, J. Mamm., 74(4): [819][820][821][822][823][824][825][826][827][828][829][830][831]1993 819 1961), Hall (1981) retained the taxon as a subspecies of P. maniculatus. Gunn and Greenbaum (1986) and Gunn (1988) reexamined the systematic status of areas and concluded that it is distinct from sympatric populations of P. m. austerus.…”

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confidence: 99%

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Systematic and Taxonomic Implications of Karyotypic, Electrophoretic, and Mitochondrial-Dna Variation in Peromyscus from the Pacific Northwest

Hogan

Hedin

Koh³

et al. 1993

Journal of Mammalogy

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Chromosomes, allozymes, and mitochondrial DNA (mtDNA) were analyzed to examine the taxonomic and systematic relationships of coastal Peromyscus from northern Washington to southern Alaska. All three datasets indicate that Peromyscus from this region constitute two distinct groups. One group comprises P. oreas, P. sitkensis, and several currently recognized subspecies of P. maniculatus including P. m. algidus, P. m. hylaeus, P. m. keeni, P. m. macrorhinus, and P. m. prevostensis. The second group comprises only populations of P. m. austerus. The. former group is differentiated from the latter by number of autosomal arms, allele-frequency differences, and mtDNA haplotypes. This dichotomy in karyotype, and the level of allozymic and mtDNA divergence between the groups suggest that the groups constitute distinct species. We recommend that P. oreas, P. sitkensis, P. maniculatus algidus, P. m. hylaeus, P. m. keeni, P. m. macrorhinus, and P. m. prevostensis be recognized under the specific epithet of Peromyscus keeni.The taxonomy of deer mice (Peramyscus) inhabiting the Pacific Northwest from Washington to southern Alaska has been complicated by extensive insular endemism resulting in a plethora of recognized taxa. Hall (1981) recognized two species in this region,P. maniculatusandP. sitkensis. From the Columbia River north to southern Alaska and west of the Cascade and Coastal mountain ranges, P. maniculatus was considered to comprise 27 subspecies distributed over the entire mainland and on most of the associated islands (Hall, 1981). Despite considerable evidence supporting the specific status of P. areas (Dice, 1949; J ohnson and Ostenson, 1959; Liu, 1954; Sheppe, J. Mamm., 74(4):819-831,1993 819 1961), Hall (1981) retained the taxon as a subspecies of P. maniculatus. Gunn andGunn (1988) reexamined the systematic status of areas and concluded that it is distinct from sympatric populations of P. m. austerus.These taxa can be discretely separated based on the number of autosomal arms (fundamental number, FN) in the karyotype. Populations of P. areas are characterized by a high FN (85-92), whereas P. m. austerus has a low FN (74-78). The absence of intermediate FNs in areas of sympatry was interpreted to indicate reproductive isolation.The specific status of P. areas has been further supported by morphologic (Allard and

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confidence: 83%

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confidence: 99%

Systematic and Taxonomic Implications of Karyotypic, Electrophoretic, and Mitochondrial-Dna Variation in Peromyscus from the Pacific Northwest

Hogan

Hedin

Koh³

et al. 1993

Journal of Mammalogy

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“…Interstitial C-bands have also been re ported for Chr 5. 6, and 7 in northwestern populations of spe cies in the maniculatus species group (Pengilly et al, 1983;Gunn and Greenbaum. 1986;Hale, 1986;Gunn.…”

Section: Autosom Al Heterochromatinmentioning

confidence: 99%

Cytogenetic nomenclature of deer mice, <i>Peromyscus </i>(Rodentia): revision and review of the standardized karyotype

Greenbaum

Gunn²,

Smith³

et al. 1994

Cytogenet Genome Res

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A revision of the standardized karyotype of deer mice (Peromyscus) is presented. This revision addresses shortcomings of the original standardization, contains a substantial increase in the number of G-band markers and provides a nomenclature for the G-bands of each autosome and the X chromosome. Using the revised standardized karyotype, we specify the particular G-bands or patterns that identify each chromosome and catalog the more problematic chromosome identifications and likely misidentifications. For each chromosome, we present an overview of previously reported variation in euchromatic arrangement and heterochromatic constitution. We then review previous applications of the standardized karyotype and summarize the predominant findings from cytogenetic and cytosystematic studies of Peromyscus and related taxa.

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“…Populations now recognized as P. keeni were found to have a fundamental number (FN, the number of arms in the autosomal karyotype) of 85-92; for northwestern populations of P. maniculatus FN = 74-78 (Gunn and Greenbaum 1986;Gunn 1988). Multivariate morphological analyses ultimately revealed a single character (tail length >98 mm indicating P. keeni) that accurately classified greater than 95% of genetically identified specimens from mainland and insular populations from the Pacific Northwest (Allard and Greenbaum 1988).…”

Section: Introductionmentioning

confidence: 99%

Mitochondrial DNA sequence variation and the specific identification of deer mice (<i>Peromyscus</i>) from Triangle Island, British Columbia, Canada

Chirhart¹,

Arianpour²,

Honeycutt³

et al. 2001

Can. J. Zool.

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Nucleotide sequences from the ND3, ND4L, and ND4 genes of the mitochondrial DNA of deer mice (Peromyscus) from Triangle Island, British Columbia, were analyzed and compared with those from reference samples of the geographically proximal species Peromyscus maniculatus and Peromyscus keeni. Variation among the deer mice from Triangle Island comprised four sequences with a total sequence divergence of 0.093%. One of these sequences characterized 52% of the 27 individuals analyzed; each of the other sequence variants occurred in smaller, but similar, proportions of the population sample. Phylogenetic and distance-clustering analyses uniformly grouped the sequences from the Triangle Island population and placed them within a cluster otherwise comprised of the P. keeni reference samples. The reference samples of P. maniculatus clustered distinctly and significantly outside of the P. keeni/Triangle Island deer mouse assemblage. These data indicate that, in contradiction to their current formal recognition as P. maniculatus, the deer mice from Triangle Island are representative of, and should be taxonomically relegated to, P. keeni.Résumé : Les séquences de nucléotides des gènes ND3, ND4L et ND4 de l'ADN mitochondrial ont été analysées chez les Peromyscus de l'île Triangle en Colombie-Britannique et comparées à celles d'échantillons de référence de Peromyscus maniculatus et de Peromyscus keeni provenant la région géogaphique immédiate. La variation chez les souris sylvestres de l'île Triangle implique quatre séquences, pour une divergence totale de 0,093 %. L'une de ces séquences a été trouvée chez 52 % des 27 souris examinées, chacune des autres variantes était présente dans des proportions moins élevées, mais similaires de la population étudiée. Des analyses phylogénétiques et des analyses de groupements basées sur les distances ont réuni de manière uniforme toutes les séquences de la population de l'île Triangle dans un même groupement, qui englobe aussi les échantillons de référence de P. keeni . Les échantillons de référence de P. maniculatus forment un groupement distinct significativement éloigné de celui formé par P. keeni et le peuplement de souris sylvestres de l'île Triangle. En dépit de l'identification actuelle de ces souris sous le nom de P. maniculatus, nos données indiquent que les souris sylvestres de l'île Triangle correspondent à l'espèce P. keeni et qu'elles devraient être reconnues comme telles taxonomiquement.[Traduit par la Rédaction] 2260 Chirhart et al.

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Systematic Implications of Karyotypic and Morphologic Variation in Mainland Peromyscus from the Pacific Northwest

Cited by 28 publications

References 15 publications

Systematic and Taxonomic Implications of Karyotypic, Electrophoretic, and Mitochondrial-Dna Variation in Peromyscus from the Pacific Northwest

Systematic and Taxonomic Implications of Karyotypic, Electrophoretic, and Mitochondrial-Dna Variation in Peromyscus from the Pacific Northwest

Cytogenetic nomenclature of deer mice, <i>Peromyscus </i>(Rodentia): revision and review of the standardized karyotype

Mitochondrial DNA sequence variation and the specific identification of deer mice (<i>Peromyscus</i>) from Triangle Island, British Columbia, Canada

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