The Genetics of Speciation in the Rodent Genus Peromyscus

Zimmerman, Earl G.; Kilpatrick, C. William; Hart, B. J.

doi:10.2307/2407722

Cited by 36 publications

(27 citation statements)

References 21 publications

(31 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The mean values of genetic distance among populations are within the range generally observed in other rodent species (Zimmermann et al, 1978;Graf, 1982). Low values observed among European populations of A. sylvaticus (D = 0.003; range 0.000-0.015) may be due to the eurytopic niche of this species, favouring gene flow between contiguous populations.…”

Section: Discussionsupporting

confidence: 52%

“…Whereas Sardinia was probably invaded directly from Italy, our results suggest that the Corsican populations originated from Etruria through Elba, as indicated by the presence of allele Got-2 92 on the latter two islands. Although genic and morphologic evolution are generally thought to be independent in mammals (Schnell & Selander, 1981), the comparison of mean values of genetic distance displayed by populations of A. sylvaticus with those observed among subspecies in other rodents (D = 0.052, Zimmermann et al, 1978;D = 0.064, Graf, 1982) should lead to a critical revision of the subspecific division of this species. However, as stated above, allozyme analysis may not be sensitive enough to clarify the taxonomy of A. sylvaticus.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Genetic variation and evolution in the genus Apodemus (Muridae: Rodentia)

Filippucci¹,

MACHOLÁN²,

Michaux³

2002

Biol J Linn Soc

View full text Add to dashboard Cite

Genetic variation was studied using protein electrophoresis of 28-38 gene loci in 1347 specimens of Apodemus agrarius, A. peninsulae, A. flavicollis, A. sylvaticus, A. alpicola, A. uralensis, A. cf. hyrcanicus, A. hermonensis, A. m. mystacinus and A. m. epimelas The data also suggest a recent separation of members of the latter group from a common ancestor, and subsequent rapid radiation, making it difficult to infer phylogenetic relationships. Some taxonomic implications of the results are discussed further.

show abstract

Section: Discussionsupporting

confidence: 52%

Section: Discussionmentioning

confidence: 99%

Genetic variation and evolution in the genus Apodemus (Muridae: Rodentia)

Filippucci¹,

MACHOLÁN²,

Michaux³

2002

Biol J Linn Soc

View full text Add to dashboard Cite

show abstract

“…It has been stressed recently (Sarich, 1977;Zimmerman et a!., 1978;Cianchi et a!., 1978) that genetic distance calculations are affected by the contribution of two different classes of enzymes: variable substrate and regulatory enzymes (sensu Johnson, 1974) being generally variable and rapidly-evolving, and non regulatory enzymes being less variable and slowly-evolving (see also Powell, 1975).…”

Section: Introductionmentioning

confidence: 99%

Genetic distance between pheromone strains of the European corn borer, Ostrinia nubilalis: Different contribution of variable substrate, regulatory and non regulatory enzymes

1980

View full text Add to dashboard Cite

SUMMARYGenetic divergence between two forms of Ostrinia nubilalis, which were characterized by a different composition of the sex pheromone, was studied on the basis of 30 gene-enzyme systems. Nei's measure of standard genetic distance between the forms was D = 0024, strikingly different from the value of D =0002 previously obtained by Harrison and Vawter on 10 enzyme loci between populations genetically homogeneous with those presently studied. In order to examine the discrepancy, and to test Sarich's hypothesis of a correlation between metabolic role of enzymes and their rate of evolution, the sample of 30 loci was subdivided into two classes: 14 loci coding for variable-substrate and regulatory (sensu Johnson, 1974) enzymes on the one hand and 16 loci coding for nonregulatory enzymes on the other. The mean values of genetic distance calculated separately for the two classes of enzymes were significantly different: D1 = 0056 and D, =0004 respectively. The ratio D1/D, is 14, a value of the same magnitude as found in various taxa at the beginning of their process of divergence, as indicated by recent data on both vertebrates and invertebrates.The data confirm Sarich's hypothesis of a bimodality in the rate of evolution of different classes of enzymes, and explain the difference between our value of the mean genetic distance and that obtained by Harrison and Vawter, who studied mainly non-regulatory enzymes. They confirm the importance of the choice of loci in evaluating genetic divergence. Mean values of genetic distance may be meaningless if they do not take into account the proportions of loci with different metabolic roles.

show abstract

“…Cytotypes C and D suggest that O. banderanus populations have had the opportunity since its early origin of a radiation with an impact on their karyotype. Therefore, it would be desirable to study the reproductive aspects within these populations, as has been suggested by Zimmerman et al (1978) in order to clarify taxonomic doubts.…”

Section: Discussionmentioning

confidence: 99%

Chromosomal Variation of Osgoodomys banderanus (Rodentia: Muridae).

1999

View full text Add to dashboard Cite

Summary Chromosomal material from 76 specimens of Osgoodomys banderanus collected in 22 different localities was studied. The revised material was obtained from femur bone marrow from individuals which were previously injected with colchicine. A minimum of 10 mitotic fields were studied for each specimen. A number 2n=48 was found for all the studied specimens. 3 different fundamental numbers and 4 different cytotypes were found 3 of them are not registered yet. Geographical distribution for each cytotype is presented. The G banding pattern was obtained and a cladogram with the possible chromosomal changes is presented.

show abstract

The Genetics of Speciation in the Rodent Genus Peromyscus

Cited by 36 publications

References 21 publications

Genetic variation and evolution in the genus Apodemus (Muridae: Rodentia)

Genetic variation and evolution in the genus Apodemus (Muridae: Rodentia)

Genetic distance between pheromone strains of the European corn borer, Ostrinia nubilalis: Different contribution of variable substrate, regulatory and non regulatory enzymes

Chromosomal Variation of Osgoodomys banderanus (Rodentia: Muridae).

Contact Info

Product

Resources

About