| using sperm morphometry and multivariate analysis to differentiate species of gray mazama. | there is genetic evidence that the two species of brazilian gray mazama, mazama gouazoubira and mazama nemorivaga, belong to different genera. this study identified significant differences that separated them into distinct groups, based on characteristics of the spermatozoa and ejaculate of both species. the characteristics that most clearly differentiated between the species were ejaculate colour, white for m. gouazoubira and reddish for m. nemorivaga, and sperm head dimensions. multivariate an ... | 2016 | 28018612 |
| cytogenetic description of the amazonian brown brocket mazama nemorivaga (artiodactyla, cervidae). | the amazonian brown brocket mazama nemorivaga (cuvier, 1817) is a small to medium-sized deer from the amazon rainforest and ecotones. the first karyotype described was 2n=67 to 69 + 2-7 b and fn= 69-72, in which all chromosomes were acrocentric and the x chromosome was the only submetacentric chromosome. however, important aspects of the species chromosome evolution were not resolved because of the lack of information on chromosome banding. the g-banding pattern of mazama nemorivaga karyotype sh ... | 2013 | 24260687 |
| water availability not fruitfall modulates the dry season distribution of frugivorous terrestrial vertebrates in a lowland amazon forest. | terrestrial vertebrate frugivores constitute one of the major guilds in tropical forests. previous studies show that the meso-scale distribution of this group is only weakly explained by variables such as altitude and tree basal area in lowland amazon forests. for the first time we test whether seasonally limiting resources (water and fallen fruit) affect the dry season distribution in 25 species of terrestrial vertebrates. to examine the effects of the spatial availability of fruit and water on ... | 2017 | 28301589 |
| a gene-tree test of the traditional taxonomy of american deer: the importance of voucher specimens, geographic data, and dense sampling. | the taxonomy of american deer has been established almost entirely on the basis of morphological data and without the use of explicit phylogenetic methods; hence, phylogenetic analyses including data for all of the currently recognized species, even if based on a single gene, might improve current understanding of their taxonomy. we tested the monophyly of the morphology-defined genera and species of new world deer (odocoileini) with phylogenetic analyses of mitochondrial dna sequences. this is ... | 2017 | 29134018 |