| the status of haemogregarina mansoni sambon and seligmann from zamenis flagelliformis laurenti. | haemogregarina mansoni sambon and seligmann 1907, a parasite of the coachwhip snake (masticophis flagellum) is redescribed on the basis of sporogonic stages obtained in the experimental vector aedes aegypti and designated as hepatozoon mansoni from hosts collected in north florida. gamonts average 14.7 x 4.7 (13-16 x 4-6) and are not recurved, with nuclei situated in the second quarter of the gamont. erythrocyte cytoplasm is often thin, appearing partially dehemoglobinized, or contracted into a ... | 2002 | 12197131 |
| intestinal coccidioidomycosis in a red coachwhip snake (masticophis flagellum piceus). | an adult female, wild-caught red coachwhip snake (masticophis flagellum piceus) was euthanized at the phoenix zoo due to severe neurologic signs. necropsy and histopathology revealed an invasive liposarcoma of the vertebral column, which likely caused the neurologic signs. histology of the small intestine revealed a granuloma with intralesional yeasts morphologically compatible with the genus coccidioides. the diagnosis of coccidioidomycosis was confirmed with immunohistochemistry staining. cocc ... | 2013 | 24450077 |
| snake co-occurrence patterns are best explained by habitat and hypothesized effects of interspecific interactions. | snakes often occur in species-rich assemblages, and sympatry is thought to be facilitated primarily by low diet overlap, not interspecific interactions. we selected, a priori, three species pairs consisting of species that are morphologically and taxonomically similar and may therefore be likely to engage in interspecific, consumptive competition. we then examined a large-scale database of snake detection/nondetection data and used occupancy modelling to determine whether these species occur tog ... | 2014 | 23998642 |
| power lines, roads, and avian nest survival: effects on predator identity and predation intensity. | 1 anthropogenic alteration of landscapes can affect avian nest success by influencing the abundance, distribution, and behavior of predators. understanding avian nest predation risk necessitates understanding how landscapes affect predator distribution and behavior. 2 from a sample of 463 nests of 17 songbird species, we evaluated how landscape features (distance to forest edge, unpaved roads, and power lines) influenced daily nest survival. we also used video cameras to identify nest predators ... | 2014 | 24967077 |
| a new species of isospora (apicomplexa: eimeriidae) from eastern coachwhip, coluber flagellum flagellum (reptilia: ophidia) from oklahoma. | between june 2013 and august 2014, four eastern coachwhips, coluber flagellum flagellum were collected from arkansas (n = 2) and oklahoma (n = 2) and their faeces examined for coccidian parasites. one (25%) harboured an isosporan that we describe here as new. oocysts of isospora kiamichiensis sp. n. were spheroidal to subspheroidal with a uni-layered wall and measured (length × width, l × w) 25.0 × 22.2 μm, with an l/w ratio of 1.1. a micropyle, oocyst residuum and polar granule were absent. spo ... | 2015 | 26204185 |
| characterization of bradykinin-related peptides generated in the plasma of six sarcopterygian species (african lungfish, amphiuma, coachwhip, bullsnake, gila monster, and gray's monitor). | incubation of heat-denatured plasma from six species occupying different evolutionary positions within the sarcopterygian lineage [the dipnoan, protopterus annectens (african lungfish); the urodele, amphiuma tridactylum (three-toed amphiuma); the colubrid snakes, pituophis melanoleucus sayi (bullsnake) and masticophis flagellum (coachwhip); and the lizards heloderma suspectum (gila monster) and varanus grayi (gray's monitor)] with trypsin generated bradykinin-related peptides that were detected ... | 1998 | 9748409 |
| three new species of monocotyle (monogenea: monocotylidae) from the stingray, himantura uarnak (rajiformes: dasyatidae) from the great barrier reef: phylogenetic reconstruction, systematics and emended diagnoses. | three new species of monocotyle were found on the gills of the coachwhip stingray, himantura uarnak (rajiformes: dasyatidae) collected at heron island, great barrier reef, australia (23 degrees 27' s, 151 degrees 55 'e). monocotyle helicophallus new species, monocotyle multiparous new species and monocotyle spiremae new species all have a single testis and are distinguished from other described monocotyle species by size of body and hamulus and number of coils of the sclerotized male copulatory ... | 1990 | 2242960 |
| responses by corn snakes (elaphe guttata) to chemicals from heterospecific snakes. | young corn snakes,elaphe guttata, were tested for responses to chemicals from heterospecific snakes. corn snakes exhibited more tongue-flicks to swabs freshly rubbed against the skin of an ophiophagous kingsnake,lampropeltis getulus, than to blank swabs. responses tol. getulus and a nonophiophagous western plains garter snake,thamnophis radix haydeni, did not differ significantly. corn snakes exhibited more tongue-flicks to swabs treated with chloroform extracts of the shed skins ofl. getulus; a ... | 1990 | 24264894 |
| some correlates of cranial and cervical morphology with predatory modes in snakes. | dissection of the cervical and basicranial regions in three species of snakes indicates that compared to crotalus viridis and lichanura roseofusca, masticophis flagellum possesses relatively high numbers of compound axial muscle insertions on the atlas-axis and vertebrae numbers 3-5. it is suggested that the condition in masticophis facilitates its vertical-neck-horizontal-head foraging posture and has allowed axial muscles inserting on the dorsocaudal braincase in this snake to generate vertica ... | 1977 | 30249077 |