Data on the population structure of the European Pond Turtle, Emys orbicularis (LINNAEUS, 1758) in Lake Suluklu (western Anatolia, Turkey)


AYAZ D. , ÇİÇEK K.

HERPETOZOA, vol.24, pp.33-41, 2011 (Journal Indexed in SCI) identifier

  • Publication Type: Article / Article
  • Volume: 24
  • Publication Date: 2011
  • Title of Journal : HERPETOZOA
  • Page Numbers: pp.33-41
  • Keywords: Reptilia: Testudines: Emydidae: European Pond Turtle, Emys orbicularis, population structure, population dynamics, population size, body size, ecology, conservation, western Anatolia, Turkey, BODY-SIZE, CONSERVATION, MANAGEMENT, MATURITY, REGION

Abstract

The authors monitored the population of the European Pond Turtle, Em's orbicularis (LINNAEUS, 1758) in Lake Suluklu (Manisa, Turkey) from April to September 2010. According to these estimations, 6.8% of the population were juveniles, 39.1% males and 54.1% females. Using Jolly-Seber's formula, the population size was calculated as 205 (Standard Error = 19.5, range = 167-243), survival rate as 0.82, and capture probability as 0.31. The adult sex ratio was significantly skewed in favor of females (males:females 0.7, P <= 0.009). Mean straight carapace length (SCL), plastron length (PT), and body mass (BM) of adult turtles were for males (n = 52) SCL = 132.2 +/- 1.19 mm, PL = 120.3 +/- 0.98 mm, and BM = 407.4 +/- 94.01 g, and for females (n = 72) SCL = 147.8 +/- 1.44 mm, PL = 144.4 +/- 1.39, and BM = 707.4 +/- 132.11 g. The factors threatening the local population were discussed.