Literaturdatenbank
Literaturdatenbank |
|
 |
|
Lindeman, P. V. , Map turtles of the mermentau: Status surveys of forgotten populations. Unpublished paper presented at 8th Annual Symposium on the Conservation and Biology of Tortoises and Freshwater Turtles.
Added by: Sarina Wunderlich (06 Jul 2014 16:11:48 UTC) |
| Resource type: Conference Paper BibTeX citation key: anon2010x View all bibliographic details  |
Categories: General Keywords: Emydidae, Habitat - habitat, Nordamerika - North America, Schildkröten - turtles + tortoises, Trachemys scripta Creators: Lindeman Collection: 8th Annual Symposium on the Conservation and Biology of Tortoises and Freshwater Turtles |
Views: 4/694
Views index: 19% Popularity index: 4.75% |
| Abstract |
|
The first specimens of Sabine map turtles (Graptemys sabinensis Cagle 1953) were collected in 1893−94 from the Mermentau River at Mermentau in southwestern Louisiana by amateur collector Gustave Kohn, who sent them to Georg Baur. Baur planned to describe a new species, Graptemys intermedia, in a turtle monograph which went unpublished following his death in 1898; nevertheless, the name was used by Beyer in his 1900 checklist of Louisiana herpetofauna. Other than a brief mention of three survey sites at which the species was seen in 2001 by Shively, Mermentau populations of Graptemys have been neglected by turtle researchers. I surveyed basking turtles throughout the Mermentau drainage in May 2010 and recorded G. sabinensis on the mainstem river both above and below Lake Arthur; in Lake Arthur; and in all five major tributary bayous: Lacassine, Queue de Tortue, Nezpique, des Cannes, and Plaquemine Brule. Densest populations were in the Mermentau River (including Lake Arthur) and bayous Plaquemine Brule and Nezpique. Graptemys sabinensis was the predominant basking species, at 69% of all turtles seen (796 of 1151) in an assemblage with seven basking turtle species. In contrast, the rarest basking species was the congeneric Mississippi map turtle (G. pseudogeographica kohnii), at just 0.2% of all turtles seen.
Added by: Sarina Wunderlich |