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The Plymouth Red-bellied Turtle:

The Plymouth Red-bellied Turtle:. Pseudemys rubiventris. Source: www.turtlefarms.com/4inch_gallery.htm. Subspecies :. population that occupies a unique geographical range differs in morphology or genetically from other subspecies can interbreed with other subspecies of the same species.

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The Plymouth Red-bellied Turtle:

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  1. The Plymouth Red-bellied Turtle: Pseudemys rubiventris Source: www.turtlefarms.com/4inch_gallery.htm

  2. Subspecies: • population that occupies a unique geographical range • differs in morphology or genetically from other subspecies • can interbreed with other subspecies of the same species

  3. use to be considered its own subspecies called Pseudemys rubiventris bangsi • based on differences in shell measurements when compared to the mid-Atlantic Red-bellied Turtle (3). No Longer a Subspecies (3): does not differ genetically from the mid-Atlantic population

  4. www.turtlefarms.com/hatchling-special.htm

  5. Why is it classified as Endangered? • listed on April 02, 1980 based on the subspecies only occurring in Plymouth County (2) • Only 50 turtles known in 1980 • When the subspecies classification taken away, the National Wilderness Institute filed a petition in1997 to de-list the turtle based on Taxonomic error • Reclassification as a Disjunct Population Segment (separated by 250 miles) ensured that the turtle remain listed as endangered • extinction of the Plymouth Population would reduce the latitude range by 1/3; other estimates say by 40% (3)

  6. Breeding Age (3): • 15-20 years (3) • as soon as 12 years for headstarted turtles Life Expectancy: (3) • 40-45 years

  7. Nesting: (3) • females dig a nest near the pond • 1-2 clutches per year (most lay 1) • Incubation period: 73-80 days • Incubation temp: 25 ºC (3)

  8. http://academic.emporia.edu/aberjame/wetland/wildlife/wild64.jpghttp://academic.emporia.edu/aberjame/wetland/wildlife/wild64.jpg

  9. Temp Dependent Sex Determination: (3) • shady/cool produces males • sunny/warm produces females Present Sex Ratio: • currently has more males • Boot Pond: 2.5 males : 1 female (21:8)

  10. http://www.esasuccess.org/reports/profile_pages/NorthernRedbelliedCooter.htmlhttp://www.esasuccess.org/reports/profile_pages/NorthernRedbelliedCooter.html

  11. Habitat (3): • 20 coastal plain Ponds • 4 towns: Plymouth, Kingston, Carver and Middleborough • 50% in single private owned pond (Federal)

  12. www.turtlefarms.com/4inch_gallery.htm

  13. Major Threats (3): • Habitat loss • Predation • Burning Suppression

  14. www.turtlefarms.com/4inch_gallery.htm

  15. Hatchling Predators (3) : • bull frog, largemouth bass, great blue heron, raccoon, snapping turtles • Nest predation: raccoons, skunks , red fox, coyotes, crows

  16. Headstart Program (3) • 2,725 have been released from 1984-2007 • turtle nests protected with wire enclosures • hatchlings were collected • released at two to six times larger than similar-aged turtles in the wild

  17. Status of the Recovery Effort: Today there are 400-600 breeding age turtles in 20 ponds, but less than 10 have more than 20 breeders.

  18. Delisting Criteria (3):

  19. Turtle Anatomy http://www.theveterinarian.com.au/clinicalreview/article731.asp

  20. http://reptilis.net/index4/scutes.jpg

  21. http://www.peteducation.com/images/articles/ill_turtle_carapace.gifhttp://www.peteducation.com/images/articles/ill_turtle_carapace.gif

  22. Turtle Anatomy http://www.peteducation.com/images/articles/ill_turtle_plastron.gif

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