Results 141 to 150 of about 1,267 (164)
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2016
Family CTENOMYIDAE (TUCO-TUCOS) • Smallto medium-sized subterranean rodents, with large heads, small eyes and ears, heavily built cylindrical bodies, short legs, and hairy thick and short tails. • 15-65 cm. • Neotropical Region. • Sand fields, dunes, and forests. • 1 genus, 69 species, 83 taxa. • 3 species Critically Endangered, 6 species Endangered, 6
Don E. Wilson +2 more
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Family CTENOMYIDAE (TUCO-TUCOS) • Smallto medium-sized subterranean rodents, with large heads, small eyes and ears, heavily built cylindrical bodies, short legs, and hairy thick and short tails. • 15-65 cm. • Neotropical Region. • Sand fields, dunes, and forests. • 1 genus, 69 species, 83 taxa. • 3 species Critically Endangered, 6 species Endangered, 6
Don E. Wilson +2 more
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Acta Theriologica, 2001
We used banding techniques to analyze the karyotypes of 17 individuals ofCtenomys dorbignyi Contreras and Contreras, 1984, from populations in Corrientes (Mbarigui, the type locality, and Sarandicito) belonging to the previously known range of the species, and Entre Rios (Tiro Federal and Paso Vera) representing a new geographically isolated group of ...
Carina F. Argüelles +3 more
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We used banding techniques to analyze the karyotypes of 17 individuals ofCtenomys dorbignyi Contreras and Contreras, 1984, from populations in Corrientes (Mbarigui, the type locality, and Sarandicito) belonging to the previously known range of the species, and Entre Rios (Tiro Federal and Paso Vera) representing a new geographically isolated group of ...
Carina F. Argüelles +3 more
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Genetic Divergence in Ctenomys (Rodentia, Ctenomyidae) from the Andes of Chile
Journal of Mammalogy, 1992Electrophoretic variation in proteins encoded by 18 loci was analyzed in populations of Ctenomys differing in chromosome number (2n = 26 and 28). Intrapopulation and inter-population variation is high ( P = 34.7%, H = 4%, S = 84%). Genetic distances are not consistently associated with differences in chromosome number.
M. H. Gallardo, N. Kohler
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Skull Shape and Size Diversification in the Genus Ctenomys (Rodentia: Ctenomyidae)
2021The genus Ctenomys is comprised of more than 70 valid living species. It is the largest collection of fossorial mammals that occupy underground habitats, mainly in the grasslands of South America. We investigated different aspects of morphological evolution in the genus Ctenomys, with special attention to the skull.
Rodrigo Fornel +3 more
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Systematic Relationships of the Bolivian Tuco-Tucos, Genus Ctenomys (Rodentia: Ctenomyidae)
Journal of Mammalogy, 1994Evolutionary relationships and taxonomic identity of seven nominal species ( Ctenomys boliviensis , C. conoveri , C. frater , C. leucodon , C. lewisi , C. opimus , C. steinbachi ) and an undescribed species of Bolivian tuco-tuco were examined using allozymes. These species represent all previously described subgenera of Ctenomys .
J. A. Cook, T. L. Yates
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Karyotypic Evolution in Ctenomys (Rodentia, Ctenomyidae)
Journal of Mammalogy, 1991Cytogenetic relationships among Andean species of Ctenomys were examined by use of nondifferentially stained chromosomes, C-band patterns, and sperm morphology. Chromosomal diversity shows evolutionary karyotypic pathways that are remarkably varied.
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New Karyotype Information for Ctenomys (Rodentia: Ctenomyidae) from Midwest and Northern Brazil
Cytogenetic and Genome Research<b><i>Introduction:</i></b> Its wide karyotypic variation characterizes the genus <i>Ctenomys</i>, and in Brazil, the genus is distributed in the country’s southern, Midwest, and northern regions. Recently, populations of <i>Ctenomys</i> have been found in the Midwest and northern Brazil, with two new ...
Thays Duarte, de Oliveira +5 more
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Mating behaviour of Ctenomys mendocinus (Rodentia, Ctenomyidae)
1999(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
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Naturwissenschaften, 2006
Burrows play an important role for many species, providing them with shelter and access to food resources. For subterranean rodents, living underground imposes constraints on morphology and physiology. The convergence in burrow architecture among subterranean rodents has been related to the energy demands imposed by the cost of constructing an entire ...
Facundo, Luna, C Daniel, Antinuchi
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Burrows play an important role for many species, providing them with shelter and access to food resources. For subterranean rodents, living underground imposes constraints on morphology and physiology. The convergence in burrow architecture among subterranean rodents has been related to the energy demands imposed by the cost of constructing an entire ...
Facundo, Luna, C Daniel, Antinuchi
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Genome, 1993
Genome size (the amount of DNA per cell) was measured by flow-cytometric analysis in seven species of a chromosomally variable rodent genus: Ctenomys boliviensis, C. conoveri, C. frater, C. leucodon, C. lewisi, C. opimus, and C. steinbachi. The mean genome size of these species was 7.19 pg DNA and little inter- and intra-specific variation was ...
L A, Ruedas +3 more
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Genome size (the amount of DNA per cell) was measured by flow-cytometric analysis in seven species of a chromosomally variable rodent genus: Ctenomys boliviensis, C. conoveri, C. frater, C. leucodon, C. lewisi, C. opimus, and C. steinbachi. The mean genome size of these species was 7.19 pg DNA and little inter- and intra-specific variation was ...
L A, Ruedas +3 more
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