Phylogeny of muroid rodents: relationships within and among major lineages as determined by IRBP gene sequences

Jansa, Sharon A.; Weksler, Marcelo

doi:10.1016/j.ympev.2003.07.002

Cited by 255 publications

(245 citation statements)

References 61 publications

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“…Current cytogentic data confirm conclusions based on molecular studies that show Calomyscus to be the most basal clade within Muroidea (Jansa and Weksler, 2004;Romanenko et al, 2007b).…”

Section: Calomyscidaesupporting

confidence: 82%

“…This species falls within Dipodoidea, which represents a basal branch in Myomorpha (Jansa and Weksler, 2004;Steppan et al, 2004). Two other species (M. musculus and R. norvegicus) were compared with human using non-painting approaches (that is, based on full genome sequencing data) but the resolution of the methods differs greatly thus precluding the construction of an ancestral karyotype for Myomorpha.…”

Section: Overview Of Karyotype Evolution In Rodentsmentioning

confidence: 99%

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Chromosomal evolution in Rodentia

et al. 2011

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Rodentia is the most species-rich mammalian order and includes several important laboratory model species. The amount of new information on karyotypic and phylogenetic relations within and among rodent taxa is rapidly increasing, but a synthesis of these data is currently lacking. Here, we have integrated information drawn from conventional banding studies, recent comparative painting investigations and molecular phylogenetic reconstructions of different rodent taxa. This permitted a revision of several ancestral karyotypic reconstructions, and a more accurate depiction of rodent chromosomal evolution.

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“…Current cytogentic data confirm conclusions based on molecular studies that show Calomyscus to be the most basal clade within Muroidea (Jansa and Weksler, 2004;Romanenko et al, 2007b).…”

Section: Calomyscidaesupporting

confidence: 82%

Section: Overview Of Karyotype Evolution In Rodentsmentioning

confidence: 99%

Chromosomal evolution in Rodentia

et al. 2011

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“…Specifically, ouabain seems to be the active ingredient transferred from the bark to the hair as our spectra had strong peaks at 1530, 916, 880 and 796 cm 21 and lacked peaks more typical for acovenoside, which is another toxic compound sometimes found in Acokanthera bark. In addition, our spectra showed signatures indicative of additional compounds such as lignins or tannins, suggesting that more detailed investigation is likely to elucidate a selective natural extraction system driven by the rats' masticatory behaviour and salivary chemistry.…”

Section: Hair Contentsmentioning

confidence: 87%

“…In terms of understanding the long-term evolution of specialized hair, a recent phylogeny [21] identified four major muroid subdivisions, and allocated Lophiomys its own lineage close to the divergence between Gerbillinae and Murinae. Among the former is a distinct radiation of proto-gerbillines with modified hair: the spiny mice (Acomys), link rats (Deomys) and brush-furred mice (Lophuromys).…”

Section: Other Adaptationsmentioning

confidence: 99%

A poisonous surprise under the coat of the African crested rat

et al. 2011

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Plant toxins are sequestered by many animals and the toxicity is frequently advertised by aposematic displays to deter potential predators. Such 'unpalatability by appropriation' is common in many invertebrate groups and also found in a few vertebrate groups. However, potentially lethal toxicity by acquisition has so far never been reported for a placental mammal. Here, we describe complex morphological structures and behaviours whereby the African crested rat, Lophiomys imhausi, acquires, dispenses and advertises deterrent toxin. Roots and bark of Acokanthera schimperi (Apocynaceae) trees are gnawed, masticated and slavered onto highly specialized hairs that wick up the compound, to be delivered whenever the animal is bitten or mouthed by a predator. The poison is a cardenolide, closely resembling ouabain, one of the active components in a traditional African arrow poison long celebrated for its power to kill elephants.

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“…22 This distribution follows the accepted pattern of phylogenetic relationships of these Mus species obtained with mtDNA 23 and is consistent with data obtained from hybridization studies on single copy nuclear DNA and analyses of nuclear genes sequence. 22,24,25 Having established this baseline, the sequences of exons 2 and 3 from members of the SLAM/CD2 gene cluster were analyzed. There are 80 SNPs within the exons encoding the Ig domains of six SLAM/CD2 genes in the wild mice, almost a threefold increase over the variation observed among wild-derived inbred and laboratory strains.…”

Section: Resultsmentioning

confidence: 99%

Prevalence and evolutionary origins of autoimmune susceptibility alleles in natural mouse populations

et al. 2007

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The evolutionary origin of genetic diversity in the SLAM/CD2 gene cluster, implicated in autoimmune lupus susceptibility in mice, was investigated by sequence analysis of exons from six members of the cluster in 48 wild mouse samples derived from the global mouse population. A total of 80 coding region SNPs were identified among the six genes analyzed, indicating that this gene cluster is highly polymorphic in natural mouse populations. Phylogenetic analyses of these allelic sequences revealed clustering of alleles derived from multiple Mus species and subspecies, indicating alleles at several SLAM/CD2 loci were present in ancestral Mus populations prior to speciation and have persisted as polymorphisms for more than 1 million years. Analyses of nonsynonymous/synonymous ratios using likelihood codon substitution models identified several segments in Cd229, Cd48 and Cd84 that were impacted by positive diversifying selective pressures. These findings support the interpretation that selection favoring the generation and retention of functional polymorphisms has played a role in the evolutionary origin of genetic polymorphisms that are predisposing to autoimmunity.

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Phylogeny of muroid rodents: relationships within and among major lineages as determined by IRBP gene sequences

Cited by 255 publications

References 61 publications

Chromosomal evolution in Rodentia

Chromosomal evolution in Rodentia

A poisonous surprise under the coat of the African crested rat

Prevalence and evolutionary origins of autoimmune susceptibility alleles in natural mouse populations

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