Cytogenetics and karyosystematics of Oryzomys albigularis (Rodentia, Cricetidae) from Venezuela.

  title={Cytogenetics and karyosystematics of Oryzomys albigularis (Rodentia, Cricetidae) from Venezuela.},
  author={Marisol Aguilera and Antonio P{\'e}rez-Zapata and Angela M. G. Martino},
  journal={Cytogenetics and cell genetics},
  volume={69 1-2},
Several authors have proposed that Oryzomys albigularis constitutes a supraspecific complex and that chromosomal pericentromeric inversions have played a fundamental role in the diversifying process. With the purpose of clarifying the unclear taxonomic situation of the nominal forms of O. albigularis living in Venezuela, a cytogenetic study was carried out on individuals from five different localities along the Andean range and the Cordillera de la Costa. All of the individuals examined showed… 
The banding karyotypes of Oryzomys talamancae and Oryzomys capito (Rodentia, Cricetidae)
With the aim of determinating the taxonomical frontiers between the species of the macconnelli-capito group, the banding karyotypes of two morphologically similar species of this group: O. talamancae and O. capito were studied.
A preliminary review of Nephelomys albigularis (Tomes, 1860) (Rodentia: Cricetidae), with the description of a new species from the Peruvian montane forests.
The role of the Maran River is discussed as a potential driver for speciation in the genus Nephelomys and the results reveal that N. albigularis (sensu lato) comprises two taxa that are morphologically distinct and separated by a genetic distance of 5.01%.
Phylogenetic Relationships of Oryzomine Rodents (Muroidea: Sigmodontinae): Separate and Combined Analyses of Morphological and Molecular Data
A phylogenetic hypothesis for the tribe Oryzomyini is provided that can be used to understand the diversification and evolution of this group of rodents and to revise the current generic-level classification.
Morphological Variation in the Skull of Nephelomys meridensis (Rodentia, Cricetidae): Evidence for Cryptic Species in Andean Populations from Northern South America
The data support recognizing N. meridensis as a species complex, comprising at least three still undescribed taxa from the Yacambu National Park, La Trampita, and the Tama paramo (Tama massif), and a more detailed taxonomic study of Nephelomys from Venezuela is necessary.
Karyotype composition of some rodents and marsupials from Chapada Diamantina (Bahia, Brasil).
  • L. Pereira, L. Geise
  • Biology
    Brazilian journal of biology = Revista brasleira de biologia
  • 2007
The Chapada Diamantina is located in Bahia State, between 11-14 degrees S and 41-43 degrees W, being part of the Serra do Espinhaço, with an interesting mammal fauna composition, with species from different biomes living in sympatry.
Genome sizes in afrotheria, xenarthra, euarchontoglires, and laurasiatheria.
The first comprehensive set of genome size measurements for 15 Xenarthra species (armadillos) and for 12 house-mouse species are established, which probably promoted the adaptation of extant mammals to their environment.
Ten New Genera of Oryzomyine Rodents (Cricetidae: Sigmodontinae)
10 new genera are described for species or species groups previously referred to the polyphyletic genus Oryzomys, and the tribe OryZomyini now comprises 28 genera, which are morphologically diagnosable and have distinct ecogeographic distributions.
The Taxonomic Status of Mazama bricenii and the Significance of the Táchira Depression for Mammalian Endemism in the Cordillera de Mérida, Venezuela
ENM analyses revealed the existence of suitable climatic conditions for M. rufina in the Táchira Depression during the last glacial maximum and even at present, suggesting that gene flow between populations in the CO and CM may have occurred until at least the beginning of the current interglacial period and may continue today.
Chapter 2. Taxonomy, Distribution, and Natural History of the Genus Heteromys (Rodentia: Heteromyidae) in Central and Eastern Venezuela, with the Description of a New Species from the Cordillera de la Costa
Morphological comparisons with samples of H. anomalus from throughout its known range in Venezuela and with representatives of all other recognized species of the genus indicate the existence of a species new to science, which is described as Heteromys catopterius (the Overlook Spiny Pocket Mouse).
Chromosomal polymorphism in mammals: an evolutionary perspective
The available data on chromosomal polymorphisms in mammals is reviewed to identify taxa that hold promise for developing a more comprehensive understanding of chromosomal change and several research avenues that may shed light on the role of chromosome change in the diversification of mammalian populations and species.