| the role of feral mammals on wildlife infectious disease prevalence in two nature reserves within mexico city limits. | wild and feral medium-sized mammals were live trapped at two natural protected areas within the mexico city limits to determine antibody prevalence for the most common infectious diseases (rabies, toxoplasmosis, and canine parvovirus) in dogs and cats. mammals were trapped during the dry (march-april) and rainy seasons (july-august) of 1996 and 1997. a total of 68 individuals were captured, representing 8 species: opossums (didelphis virginiana), ringtails (bassariscus astutus), spotted skunks ( ... | 2005 | 17312768 |
| vertebrate florivory of vascular epiphytes: the case of a bromeliad. | the avoidance of vertebrate herbivory is thought to be one of the possible drivers for the evolution of epiphytism. scarce literature suggests that epiphyte herbivory is mainly related to insect attack on reproductive structures. in a pine-oak forest we observed almost all inflorescences of an epiphytic bromeliad (tillandsia carlos-hankii) with signs of florivory; the degree of damage suggested that vertebrate herbivores could be involved. to assess the intensity of vertebrate florivory damage w ... | 2019 | 30066733 |
| floral traits of mammal-pollinated mucuna macrocarpa (fabaceae): implications for generalist-like pollination systems. | floral traits are adapted by plants to attract pollinators. some of those plants that have different pollinators in different regions adapt to each pollinator in each region to maximize their pollination success. mucuna macrocarpa (fabaceae) limits the pollinators using its floral structure and is pollinated by different mammals in different regions. here, we examine the relationships between floral traits of m. macrocarpa and the external morphology of mammalian pollinators in different regions ... | 2018 | 30250727 |
| orthopoxvirus antibodies in grey squirrels (sciurus aureogaster) in mexico city, mexico. | serum from mexican grey squirrels (sciurus aureogaster) from mexico city reacted to orthopoxvirus by enzyme-linked immunosorbent assay. real-time pcr based on oral swabs and scabs did not detect viral dna. antibody prevalence was 30% (n=366), providing the first evidence of orthopoxvirus antibodies in mexican wild rodents. | 2014 | 24807351 |
| a new species of sciurodendrium (nematoda: heligmonellidae) in sciurus aureogaster (rodentia: sciuridae) from morelos, mexico. | sciurodendrium bravohollisae n. sp. (heligmonellidae) is described as an intestinal parasite of 2 squirrels, sciurus aureogaster cuvier, 1829, collected from los robles, municipio de tlalnepantla, morelos state, mexico. the new species differs from all other congeners in possessing a very well-developed and sacciform genital cone. this is the seventh species described for the genus and the first one recorded in mexico. | 2006 | 16884005 |
| arthropod parasites of the red-bellied squirrel callosciurus erythraeus introduced into argentina. | the introduction of an exotic species usually modifies parasite-host dynamics by the import of new parasites or the exotic species' acquiral of local parasites. the loss of parasites may determine the outcome of an invasion if the introduced species is liberated from co-evolved parasites in its range of invasion. in addition, an introduced species may pose sanitary risks to humans and other mammals if it serves as a reservoir of pathogens or carries arthropod vectors. the red-bellied squirrel, c ... | 2013 | 23252828 |
| variation of micronucleated erythrocytes in peripheral blood of sciurus aureogaster in relation to age: an increment of micronucleated polychromatic erythrocytes after the administration of colchicine. | in some species, in which the human is included, the influence of age in the variation in the number of micronucleated erythrocytes (mne) is known. in the present work we show how the process of aging influences the number of spontaneous mne in the gray squirrel (sciurus aureogaster). because of the difficulty of knowing the age of each animal, 69 animals were weighed at their arrival to the laboratory and at the start of sample taking, with the supposition that the heaviest animals were the old ... | 2001 | 11246224 |