| five new species of coccidia (apicomplexa: eimeriidae) from colubrid snakes of ecuador. | fecal samples from 11 colubrid snakes, representing 10 species, collected in ecuador during october 1994 were examined for coccidian parasites. feces of 4 individuals, representing 4 host species, contained coccidian oocysts. three species of eimeria and 2 species of isospora were observed and are described here as new. oocysts of both eimeria and isospora were found in the feces of a slug-eating snake, dipsas vermiculata. sporulated oocysts of the eimeria sp. are spheroid to subspheroid, 16.7 b ... | 2001 | 11695368 |
| reptiles as potential vectors and hosts of the amphibian pathogen batrachochytrium dendrobatidis in panama. | chytridiomycosis, the disease caused by batrachochytrium dendrobatidis, is considered to be a disease exclusively of amphibians. however, b. dendrobatidis may also be capable of persisting in the environment, and non-amphibian vectors or hosts may contribute to disease transmission. reptiles living in close proximity to amphibians and sharing similar ecological traits could serve as vectors or reservoir hosts for b. dendrobatidis, harbouring the organism on their skin without succumbing to disea ... | 2011 | 22303629 |
| [karyotype study of 5 species of costa rican snakes of the colubrid family]. | the karyotypes of five species of colubrid snakes from costa rica are as follows: imantodes cenchoa and drymobius margaritiferus have a diploid number of 36, with 16 macro- and 20 microchromosomes. the fourth pair is heteromorphic in females of i. cenchoa, with a metacentric z and a submetacentric w chromosomes. karyotypes of erythrolampius bizonus and leimadophis epinephalus have 28 chromosomes, without a clearcut separation between macro- and microchromosomes. in the case of e. bizomus, the fo ... | 1984 | 6545622 |
| sequencing and analysis of the complete mitochondrial genome of elaphe davidi (squamata: colubridae). | the mitochondrial genome sequence of elaphe davidi is analyzed and presented for the first time in this work. the genome was 17,117 bp in length and contained 13 protein-coding genes, 2 ribosomal rna genes, 22 transfer rna genes and 2 control region. the overall base composition is a (35.4%), c (25.2%), t (27.0%), and g (12.4%). the base compositions present clearly the a-t skew, which was most obviously in the control region and protein-coding genes. mitochondrial genomes analyses based on mp, ... | 2016 | 25806578 |
| analysis of the microstructure of xenodontinae snake scales associated with different habitat occupation strategies. | the morphology of many organisms seems to be related to the environment they live in. nonetheless, many snakes are so similar in their morphological patterns that it becomes quite difficult to distinguish any adaptive divergence that may exist. many authors suggest that the microornamentations on the scales of reptiles have important functional value. here, we examined variations on the micromorphology of the exposed oberhautchen surface of dorsal, lateral, and ventral scales from the mid-body r ... | 2009 | 19802453 |