| new records of helminths of sceloporus pyrocephalus cope (squamata, phrynosomatidae) from guerrero and michoacán, mexico, with the description of a new species of thubunaea seurat, 1914 (nematoda, physalopteridae). | a total of 61 specimens of the red-headed spiny lizard sceloporus pyrocephalus cope (phrynosomatidae) collected during the breeding season (june/july 2003, 2004 and 2005) from western mexico were examined for helminths. the morphological characterization of the helminths found was made through light microscopy and scanning electron microscopy. nine taxa of helminths were identified, two cestodes: mesocestoides sp. and oochoristica sp., and seven nematodes: parapharyngodon ayotzinapaensis garduño ... | 2017 | 29290707 |
| two new species of parapharyngodon parasites of sceloporus pyrocephalus, with a key to the species found in mexico (nematoda, pharyngodonidae). | two new species of parapharyngodon collected from the intestine of the mexican boulder spiny lizard sceloporus pyrocephalus are described. this study increases to 49 the number of valid species assigned to parapharyngodon worldwide, 11 of them distributed in mexico. males of the two new species share the presence of four pairs of caudal papillae, an anterior echinate cloacal lip and the presence of lateral alae; however, both differ from each other in lateral alae extension and echinate cloacal ... | 2016 | 27006602 |
| steroid correlates of multiple color traits in the spiny lizard, sceloporus pyrocephalus. | conspicuous coloration in females is less well studied compared to that in males. adult female mexican boulder spiny lizards (sceloporus pyrocephalus) have conspicuously colored throat, or gular, regions, ranging from red to yellow, while adult males only weakly express such color in their gular region. both sexes have dark blue-black gular stripes and venter stripes. understanding proximate mechanisms underlying trait expression can aid in understanding trait function. to characterize the proxi ... | 2007 | 17520263 |