Literaturdatenbank
Literaturdatenbank |
|
 |
|
Roman, J., Santhuff, S. D., Moler, P. E., & Bowen, B. W. (1999). Population structure and cryptic evolutionary units in the alligator snapping turtle macroclemys temminckii. Conservation Biology, 13(1), 135–142.
Added by: Admin (14 Aug 2008 20:36:27 UTC) Last edited by: Beate Pfau (13 Jul 2012 18:48:39 UTC) |
| Resource type: Journal Article BibTeX citation key: Roman1999 View all bibliographic details  |
Categories: General Keywords: Chelydridae, Habitat = habitat, Macrochelys, Macrochelys temminckii, Nordamerika = North America, Schildkröten = turtles + tortoises, Systematik = taxonomy Creators: Bowen, Moler, Roman, Santhuff Collection: Conservation Biology |
Views: 6/680
Views index: 11% Popularity index: 2.75% |
| Abstract |
|
Abstract: The alligator snapping turtle ( Macroclemys Macrochelys temminckii) is a long-lived, slow-growing chelydrid turtle found in Gulf of Mexico drainages from Florida to Texas (U.S.A.). Populations are thought to be depleted throughout the range due in part to an increased harvest in the 1960s through 1980s. To identify population and evolutionary units, 420 base pairs were sequenced within the mitochondrial DNA control region of 158 specimens from 12 drainages. Results indicate substantial phylogeographic structuring and strong population-level separations among river drainages. Eight of 11 haplotypes were observed to be river-specific, providing diagnostic markers for most drainages. Three partitions are resolved in the mtDNA genealogy, corresponding to the eastern, central, and western portion of the species' range. These separations coincide with recognized biogeographic provinces. The population structure by river system indicates that many drainages are distinct management units, with the Suwannee River lineage possibly deserving special attention, based on the criterion of genetic distinctiveness. The partitioning of M. temminckii into river-specific populations illustrates the management framework and conservation challenges that apply to a broad array of riverine species. Drainage-specific molecular markers may be used to identify the geographic origin of turtle products in the marketplace.
Added by: Admin Last edited by: Beate Pfau |