Habitat diversity and seasonal variations on the frequency of Caspian pond turtle, (Mauremys caspica) and determination of sex indexes grouping of specimens in Golestan province

Document Type : Animal systematic

Authors

1 Department of Biology, Faculty of Sciences, Golestan University, Gorgan, Iran

2 Department of Biology, Faculty of Science, Golestan University, Gorgan, Iran

Abstract

The Caspian Pond Turtle, Mauremys caspica, is a terrapin belonging to family Geoemydidae. Testudines have different habitats in different stages of their life cycles. Terrapins have a limited locomotion that changes their population density in certain seasons. Totally 134 specimens (65 males, 69 females) were collected from 14 different aquatic habitats in Golestan province in 2016 – 2017. 25 morphometric characters were measured. Sex ratios of males to females were nearly 1:1. All morphometric characters showed normal distribution (P>0.001) except weight in females (p=0.001). Four characters (W, PL1, PFLW and PHLW) did not show normal distribution in males (P<0.001). Comparison of the parametric characters showed, mean values of characters TL1 (p<0.000), AnSL (p<0.005) and TL2 (p<0.005) were significantly different between the sexes. None of the four nonparametric characters showed significant differences between males and females (p>0.66). The ratio Tail length2 (TL2)to Tail length1 (TL1) and TL1 to Right bridge length (RBrL)are fast and simple grouping index to determine sex of the specimens. The most and the lowest number of specimens were collected in summer (n=52) and fall (n=6) respectively.

Keywords

References

  1. Atatür, M. and Ballasina, D., 1995. A preliminary report on the present status of Turkey’s terrestrial and freshwater turtles from the viewpoint of conservation. Red Data Book on Mediterranean Chelonians. pp: 183-190.
  2. Fritz, U. and Freytag, O., 1993. The distribution of Mauremys in Asia minor and the first record of Mauremys caspica caspica for the internally drained central basin of Anatolia. Herpetozoa. Vol. 6, pp: 97-103.
  3. Fritz, U. and Wischuf, T., 1997. Taxonomy of striped neck terrapin genus Mauremys in Southeast Europe and West Asia. Abstracts of the Thrid world Congress of Herpetology. August 2-10, 1997, Prague, Czech Republic, pp: 71-72.
  4. Gibbons, J.W. and Lovich, J.E., 1990. Sexual dimorphism in turtles with emphasis on the slider turtle (Trachemys scripta). Herpetological Monographs. Vol. 4, pp: 1-29.
  5. Janzen, F.J., 1991. Environmental sex determination in reptiles: Ecology, evolution and experimental design. The Quaterly review of Biology. Vol. 66, pp: 149-179.
  6. Kami, H.G.; Hojati, V.; Pashaee Rad, S. and Sheidaee, M., 2006. A biological study of the European Pond Turtle, Emyorbicularis persica, and the Caspian pond turtle, Mauremys caspica caspica, in the Golestan and Mazandaran provinces of Iran. Zoology in the Middle East. Vol. 37,
    pp: 21-28.
  7. Kami, H.G.; Yadollahvand, R. and Kalbassi, M.R., 2012. Biological study of Caspian pond turtle (Mauremys caspica caspica). J of Animal Environment. Vol. 4, No. 3, pp: 1-10.
  8. Safaei-Mahroo, B.; Ghaffari, H.; Fahimi, H.; Broomand, S.; Yazdanian, M.; NajafiMajd, E.; HosseinianYousefkhani, S.S.; Rezazadeh, E.; Hosseinzadeh, M.S.; Nasrabadi, R.; Rajabizadeh, M.; Mashayekhi, M.; Motesharei, A.; Naderi, A. and Kazemi, S.M., 2015. The Herpetofauna of Iran: Checklist of Taxonomy, Distribution and Conservation Status. Asian Herpetological Research. Vol. 6, pp: 257-290.
  9. Terentev, P.V. and Chernov, S.A., 1949. Key to amphibians and reptiles, third edition (Translated from Russian by the israel Program for Scientific Translation) Translated by L. Kochva, L. 195 P.
  10. Yadollahvand, R. and Kami, H.G., 2014. Habitat changes and its Impacts on the Caspian Pond Turtle (Mauremys caspica) Population in the Golestan and Mazandaran Provinces of Iran. Journal of Aqualculture Research & Development: 2155-9546 JARD, an open access journal. Vol. 5, No. 3, 2 p.
  11. Yadollahvand, R.; Kami H.G. and Kalbassi M.R., 2013. Cytogenetic characreization of the Caspian Pond Turtle, Mauremys caspica, in Golestan and Mazandaran provinces, Iran. Zoology in the Middle. East. Vol. 3, pp: 214-219.
  12. Yadollahvand, R.; Kami, H.G.; Mashroofeh, A. and Bakhtiari A.R., 2014. Assessment trace elements concentrations in tissues in Caspian Pond Turtle (Mauremys caspica) from Golestan province, Iran. Ecotoxicol Environ Saf. Vol. 101, pp: 191-195.
  13. Yazarloo, M.; Kami, H.G. and Bagherianyazdi, a.a., 2017. Sexual dimorphism and morphometric study of Caspian pond turtle, Mauremys caspica, (Testudines: Geoemydidae) in Golestan Province, southeast of the Caspian Sea. Caspian J of Environmental Sciences (CJES). Vol. 15, No. 4, pp: 321-334.
Journal of Animal Environment
Volume 12, Issue 1
February 2020
Pages 113-118

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