| prevalence and intensity of pentastomid infection in two species of snakes from northeastern brazil. | this study aimed to evaluate the infection rates of snakes by pentastomids in the semi-arid region of brazil. fifteen snakes (four micrurus ibiboboca (merrem, 1820) and eleven philodryas nattereri steindachner, 1870) were collected between january and april of 2005, in the municipality of crato (07 degrees 14' s and 39 degrees 24' w), state of ceará, brazil. laboratorial analysis of the respiratory tracts of the sampled snakes indicated differences in host infection rates: four individuals of p. ... | 2007 | 18278332 |
| phylogenetic analysis of hepatozoon spp. (apicomplexa: hepatozoidae) infecting philodryas patagoniensis (serpentes: dipsadidae) in uruguay. | the purpose of this study was to perform a phylogenetic analysis of hepatozoon spp. infecting philodryas patagoniensis in uruguay. twenty-five road-killed specimens of p. patagoniensis from ten departments were obtained. samples of blood and/or heart tissue were taken. polymerase chain reaction (pcr) assay was carried out amplifying a specific target region of the 18s rrna gene of hepatozoon spp. eighteen out of twenty-five samples were positive to hepatozoon spp., which gave an overall prevalen ... | 2020 | 31938888 |
| pentastomid infection in philodryas nattereri steindachner, 1870 and oxybelis aeneus (wagler, 1824) (squamata: colubridae) in a caatinga of northeastern brazil. | the relationship between pentastomids and two colubridae species, phillodryas nattereri steindachner, 1870 and oxybelis aeneus (wagler, 1824), were investigated in the federal government's reserve estação ecológica do seridó (esec, seridó) situated at lat 6 degrees 35'-40' s and long 37 degrees 15'-20 w in the municipality of serra negra do norte, state of rio grande do norte, northeast brazil and run by ibama (the brazilian institute for the environment and natural resources). throughout 2005, ... | 2008 | 18470397 |
| a green racer snake (philodryas nattereri, colubridae) killed but not eaten by a blonde capuchin monkey (sapajus flavius, cebidae). | we report the killing of a snake (philodryas nattereri, colubridae) by a blonde capuchin monkey (sapajus flavius, cebidae). this endemic primate species from the northeast of brazil includes vertebrates such as lizards and marsupials in its diet, but we can find no previously published record of an attack upon or consumption of snakes by this species of platyrhine monkey. during the attack, the group mobbed the snake, with individuals uttering agonistic vocalizations and displaying behaviors suc ... | 2019 | 31392448 |
| a new species of hepatozoon miller, 1908 (apicomplexa: adelerina) from the snake philodryas nattereri steindachner (squamata: dipsadidae) in northeastern brazil. | based on both unique morphological characteristics of the gamont, distinct changes caused to the host erythrocyte and analysis of partial 18s rrna gene sequences, a new parasite of the genus hepatozoon miller, 1908 is described from the snake philodryas nattereri steindachner (squamata: dipsadidae) in northeastern brazil. the new species, hepatozoon musa n. sp., is characterized by large and curved mature gamonts (18.9 ± 0.9 μm in length and 3.8 ± 0.3 μm in width) that considerably engorge infec ... | 2017 | 28062992 |
| the renal effects and initial characterization of venom fromphilodryas nattereristeindachner, 1870. | the venom of the snakephilodryas nattereriis a mixture of proteins and toxic peptides with several important local and systemic actions, which are similar to those occurring inbothropssnake bites. the mechanisms involved in the local and systemic actions of this venom are unknown. the aims of the work were to initial characterization ofp. nattererivenom and investigate the effects of the poison in the renal perfusion system and in cultured renal tubular cells of the type mdck (madin-darby canine ... | 2014 | 28962294 |
| karyotype of philodryas nattereri and philodryas olfersii with a comparative analysis of the dipsadidae family. | cytogenetic studies of philodryas nattereri and philodryas olfersii revealed a diploid chromosome number 2n = 36 for both species (3 metacentrics, 4 submetacentrics, and 10 acrocentrics, with a fundamental number of 51 and 52, respectively). the results obtained are novel and similar to those previously described for species belonging to the dipsadidae family. the conventional karyotype is also novel and divergent from other species of the dipsadidae family, where a higher proportion of macrochr ... | 2015 | 26125832 |