| molecular and morphological characterization of a haemogregarine in the alligator snapping turtle, macrochelys temminckii (testudines: chelydridae). | a severely underweight alligator snapping turtle macrochelys temminckii troost in harlan, 1835, was found near tyler, texas, and taken to the caldwell zoo. blood films were submitted to texas a&m university, college station, texas, for morphological and molecular identification of haemogregarine-like inclusions in the red blood cells. intraerythrocytic haemogregarina sp. forms were found on microscopic examination at a parasitemia of <1 %. the morphology and morphometric data for the forms indic ... | 2017 | 27807618 |
| taxonomic assessment of alligator snapping turtles (chelydridae: macrochelys), with the description of two new species from the southeastern united states. | the alligator snapping turtle, macrochelys temminckii, is a large, aquatic turtle limited to river systems that drain into the gulf of mexico. previous molecular analyses using both mitochondrial and nuclear dna suggested that macrochelys exhibits significant genetic variation across its range that includes three distinct genetic assemblages (western, central, and eastern = suwannee). however, no taxonomic revision or morphological analyses have been conducted previously. in this study, we test ... | 2014 | 24869532 |
| a new haemogregarina species of the alligator snapping turtle, macrochelys temminckii (testudines: chelydridae), in georgia and florida that produces macromeronts in circulating erythrocytes. | haemogregarina macrochelysi n. sp. (apicomplexa: haemogregarinidae) of the alligator snapping turtle, macrochelys temminckii, is characterized by slender, recurved gamonts 29-35 x 3-4.5 microm, in which the anterior limb comprises 48-54% of the total length. the gamont nucleus, 5-7.5 x 2-5 microm, is situated at approximately midbody of the gamont. meronts typical of haemogregarina occupying erythrocytes have 3-8 small, compact nuclei and are 13-17 x 4.5-9 microm. erythrocytic meronts that conta ... | 2009 | 19245282 |
| health assessment of free-ranging alligator snapping turtles (macrochelys temminckii) in georgia and florida. | the alligator snapping turtle (macrochelys temminckii) is a large freshwater turtle endemic to river systems that drain into the gulf of mexico. turtle populations were sharply reduced by commercial harvest in the 1970s and 1980s; however, the species has yet to be protected under the endangered species act. while anthropogenic stressors such as habitat fragmentation and degradation and illegal capture continue to threaten populations, the degree to which disease may be contributing to any decli ... | 2008 | 18689653 |