Literaturdatenbank
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Franch Quintana, M., Faura, A. M., & Cabrera, G. L. A. , Evolution of body mass condition index during activity annual period of freswater turtles in northeast of iberian peninsula. Unpublished paper presented at XII Congresso Luso Espanhol de Herpetologia.
Added by: Admin (06 Jan 2014 18:22:48 UTC) |
| Resource type: Conference Paper BibTeX citation key: FranchQuintana2012 View all bibliographic details  |
Categories: General Keywords: Emydidae, Emys orbicularis, Geoemydidae, Habitat - habitat, Mauremys leprosa, Schildkröten - turtles + tortoises, Südwesteuropa - South-Western Europa, Trachemys scripta Creators: Cabrera, Faura, Franch Quintana Collection: XII Congresso Luso Espanhol de Herpetologia |
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| Abstract |
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Freshwater turtles conditioning its annual activity to environmental conditions in their distribution area, especially climatic and hydrological conditions of the habitat (both closely linked). Two species of native freshwater turtles are presents in north-eastern Iberian Peninsula: Emys orbicularis and Mauremys leprosa. These two species are protected by law because of poor conservation status. Moreover, in the last 15-20 years have been increase the presence of invasive alien freshwater turtles. Of those, Trachemys scripta is the most widespread species. Study have been focused on three areas, two in Girona province: (1) Albera massif (42.3768N, 3.0306E) with the presence of M. leprosa and (2) the Selva area (41.8247N, 2.7145E) with the presence of E. orbicularis and (3) in Barcelona province, Delta del Llobregat floodplain (41.2943N, 2.0926E) which are present M. leprosa and T. scripta. From biometric and activity data compiled during different studies Body Mass Condition Index - BMCI - (Willemsen & Hailey 2002) has been estimated for the three freshwater turtles species for 1648 M. leprosa, 2089 E. orbicularis and 123 T. scripta. This indexhas been linked with the different stages of annual life cycle and its biological level implications on individuals. Results show an increased rate in pre and post hibernated for all species and a sharp decrease in summer phase. Differences observed between males and females would be due to different needs of reserve accumulation associated to reproductive event. In addition, captures during the early wintering period are performed on individuals with low body mass index, fact that delay this annual cycle phase.
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