Literaturdatenbank |
Negredo Mesegar, A., Fernández, L. M., Monrós, J. S., Aguirre, T. J., & Barba, E. , Growth and survival of european pond turtles transferred into a new reserve created for the species. Unpublished paper presented at XII Congresso Luso Espanhol de Herpetologia.
Added by: Admin (06 Jan 2014 18:23:01 UTC) |
Resource type: Conference Paper BibTeX citation key: NegredoMesegar2012 View all bibliographic details |
Categories: General Keywords: Emydidae, Emys orbicularis, Habitat - habitat, Schildkröten - turtles + tortoises, Südwesteuropa - South-Western Europa Creators: Aguirre, Barba, Fernández, Monrós, Negredo Mesegar Collection: XII Congresso Luso Espanhol de Herpetologia |
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Abstract |
As part of a conservation project of a population of European pond turtles (Emys orbicularis) threatened by a future urbanization of their present habitat in Burriana (Castellón), we captured, took biometric measurements, marked and transfer a group of individuals into a reserve created for the species, in October 2011. In May and June 2012 turtles were recaptured to verify their physical condition, again taking biometric measurements. For catches we placed traps used for eel fishing or mornells, that were checked every 3-4 days. Each specimen was individually marked with a code of notches made in the marginal scutes of the carapace with a small saw. Also, each individual was weighed (electronic balance of 2 kg, 1 g accuracy), and the following measurements were taken: curve and straight carapace length, curve and straight carapace width and plastron length and width (digital caliper, 0.01 mm accuracy. and tape measure). 29 individuals were captured and transferred, and 25 (11 males, 12 females and 2 undetermined sex young turtles) were recaptured. Thus, almost all individuals were recaptured, indicating a good survival rate; also some more individuals could stay in the reserve not being captured. We found a general increase in size of the turtles, highlighting a significant increase (2%) in the curve carapace length of the females. In contrast, both males (15%) and females (8%) have lost weight. Since a general increase in size was observed, we suggest that the observed decrease in weight might reflect seasonal changes, individuals accumulating reserves for hibernation in autumn.
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