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Species groups and the evolutionary diversification of tuco-tucos, genus Ctenomys (Rodentia: Ctenomyidae)
TLDR
The most comprehensive study to date of species groups in Ctenomys (tuco-tucos), a species-rich genus of Neotropical rodents, estimates that most species groups originated approximately 3 million years ago. Expand
Population and species boundaries in the South American subterranean rodent Ctenomys in a dynamic environment
TLDR
Genetic variation at 16 microsatellite loci in 169 individuals collected in the perrensi group revealed eight clusters of populations which are thought to be evolutionary units, but which do not fit previous species limits, interpreted as a result of a dynamic population structure. Expand
Subterranean rodents of the genus Ctenomys (Caviomorpha, Ctenomyidae) follow the converse to Bergmann's rule
TLDR
Tuco-tucos follow the converse to Bergmann's rule at the interspecific level, and the observed latitudinal body-size gradients are more probably related to seasonality, ambient energy, primary productivity and/or intensity of predation. Expand
Molecular analysis of populations of Ctenomys (Caviomorpha, Rodentia) with high karyotypic variability
TLDR
New chromosomal data and cytochrome b studies are able to subdivide the Ctenomys sp. Expand
The effects of Robertsonian fusions on chiasma frequency and distribution in the house mouse (Mus musculus domesticus) from a hybrid zone in northern Scotland
TLDR
The decrease of chiasma frequency can be attributed to intrachromosomal effects that reduce the number of chiasmata in Robertsonian bivalents (formed in homozygotes for Robertsonian fusions) and trivalents ( formed in heterozygotes). Expand
The complex Robertsonian system of Dichroplus pratensis (Melanoplinae, Acrididae). II. Effects of the fusion polymorphismson chiasma frequency and distribution
TLDR
Results suggest that redistribution of chiasma patterns is due to a direct effect of the rearrangements, and intrachromosomal recombination within populations decreases as number and frequency of fusions increase. Expand
Sexual size dimorphism and Rensch's rule in Canidae
TLDR
Examining the variation in body size and SSD of 33 species of canids from estimates of body mass and body length found the existence of correlation between body weight and SSD, although the SSDs from these estimators are uncorrelated. Expand
Phylogenetics of the speciose and chromosomally variable rodent genus Ctenomys (Ctenomyidae, Octodontoidea), based on mitochondrial cytochrome b sequences
TLDR
Following the success in 1998 of Lessa & Cook in generating a phylogeny of 10, mostly Bolivian, species from mitochondrial cytochrome b sequences, a further 18 species were sequenced and it was able to confirm six species lineages within Ctenomys. Expand
Evolutionary negative allometry of orthopteran hind femur length is a general phenomenon
TLDR
The conservation of a common hind leg allometric pattern in Orthoptera provides a basic framework to study adaptation of hind limbs to different habitats and lifestyles, and has important implications for the analysis of ecogeographic and evolutionary rules. Expand
Meiotic effects of Robertsonian translocations in tuco-tucos of the Ctenomys perrensi superspecies (Rodentia: Ctenomyidae)
TLDR
It was concluded that one or two Rb translocations in heterozygosis have weak direct effects on the fertility of the male carriers; therefore C. perrensi superspecies may be prone to maintain Rb chromosomal rearrangements. Expand
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