| helminth parasites of unisexual and bisexual whiptail lizards (teiidae) in north america. v. mesocestoides sp. tetrathyridia (cestoidea: cyclophyllidea) from four species of cnemidophorus. | two hundred and one whiptail lizards, cnemidophorus spp., from texas and colorado (usa), were examined for mesocestoides sp. tetrathyridia. eleven (5%) were infected, including three of 58 (5%) c. dixoni, six of 70 (9%) c. gularis septemvittatus, one of 35 (3%) c. marmoratus, and one of 34 (3%) c. tesselatus; four c. inornatus heptagrammus were not infected. in addition, 41 non-cnemidophorine lizards from the same study area were not infected. free tetrathyridia were found in the body cavity of ... | 1991 | 1920673 |
| occurrence of tetrathyridia of mesocestoides sp. (cestoidea: cyclophyllidea) in north american anurans (amphibia). | a new host and geographic locality record is reported for tetrathyridia of mesocestoides sp. in two species of ranid frogs (rana berlandieri and r. pipiens) from texas and new york, respectively. tetrathyridia were found encapsulated in liver and mesenteries of the hosts. morphological examination and experimental inoculation of these tetrathyridia into mice demonstrated the absence of capacity for asexual proliferation. overall prevalence of infection was low in anurans from arkansas, texas and ... | 1990 | 2250332 |
| mesocestoides sp. tetrathyridia (cestoidea: cyclophyllidea) in the iguanid lizards, cophosaurus texanus texanus and sceloporus olivaceous, from texas. | new host records are reported for mesocestoides sp. tetrathyridia in two species of iguanid lizards (cophosaurus texanus and sceloporus olivaceous) from texas. tetrathyridia were found free within the body cavity or encapsulated in the liver of the hosts. prevalence of infection was generally low, with intensities ranging from 90 to over 200 tetrathyridia per host. in addition, a summary of north american lizard species reported as hosts of mesocestoides sp. tetrathyridia is presented. | 1988 | 3352086 |
| population dynamics across selected habitat variables of the helminth community in coyotes, canis latrans, from south texas. | the effects of selected intrinsic variables operating on host subpopulations and of extrinsic variables across the collective host population on the distributions of 10 common helminth species from coyotes in south texas were compared. the intrinsic variables of host sex and presence and severity of sarcoptic mange had little effect on the distributions of most helminth species. the combined influences of (1) seasonal changes across the collective host population and (2) host subpopulations deli ... | 1984 | 6512639 |
| effect of short-term coyote removal on populations of coyote helminths. | coyote (canis latrans) removal programs often are initiated despite the potential population regulatory mechanism of parasitism with increased coyote density. we investigated the effect of intensive, short-term coyote removal on population levels of helminths in juvenile and adult coyotes from western texas. coyotes were killed by aerial gunning every 3 mo for 2 yr on two 5,000 ha areas, which reduced the overall coyote density of these areas by about 50%. two other 5,000 ha areas were used as c ... | 2002 | 11838229 |
| helminths of the ocelot from southern texas. | in the usa, the ocelot (leopardus pardalis) is a highly endangered felid found only in a few remaining vestiges of native thornshrub brushland in the lower rio grande valley (lrgv) of extreme southern texas. from 1987-1998, carcasses of 15 adult ocelots that died of vehicular accidents or natural causes were examined for helminths. all cats had 1-8 (mean = 3) helminth species. all were infected with 1-101 (mean +/- se = 32 +/- 7) toxascaris leonina. other helminths from these ocelots were alaria ... | 2003 | 14567231 |