Article 3119

Title of the article



Gordeev Dmitriy Anatol'evich, Candidate of biological sciences, associate professor, sub-department of biology, Volgograd State University (100 Universitetskiy avenue, Volgograd, Russia), E-mail:
Anan'eva Nataliya Borisovna, Doctor of biological sciences, professor, principal researcher, head of the laboratory of ornithology and herpetology, Zoological Institute of Russian Academy of Sciences (1 Universitetskaya embankment, Saint-Petersburg, Russia), E-mail: 

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Background. Agamid lizards (Agamidae) are the most interesting objects for studying the process of caudal autotomy, since this family combines species that are both capable of throwing off the tail, and secondarily lost this protective mechanism (or did not have it at all). The purpose of this report was to analyze the occurrence of autotomy in some members of the genera Paralaudakia Baig, Wagner, Ananjeva and Böhme, 2012 and Laudakia Gray, 1845.
Materials and methods. The material of this study were 411 specimens, of 5 species: Paralaudakia caucasia (Eichwald, 1831), P. erythrogaster (Nikolsky, 1896), P. lehmanni (Nikolsky, 1896), P. stoliczkana (Blanford, 1875) and Laudakia nupta (De Filippi, 1843) from the Herpetological collection of the Zoological Institute RAS (Saint-Petersburg). Type of autotomy is established by using x-ray equipment of the Zoological Institute RAS.
Results. The analysis of occurrence of caudal autotomy is carried out. The majority of the species contained normal tails, autotomy with subsequent regeneration occurs in the distal third of the tail, due to significant energy consumption for the subsequent regeneration, the reduced physical activity of these individuals, the chance of infection, etc. By external signs Paralaudakia and Laudakia nupta have 6 types of regenerates were recognized.
Conclusions. The studied agamid species have the same autotomy frequencies, but the lowest in P. lehmanni. Breakage of the tail occurs on the intervertebral type, usually in the distal third of the tail. Form of regenerates significantly different from original tails. In the considered agamid lizards, it is possible to distinguish 6 types of regenerates with a possible predominance of pineal serrated type. 

Key words

agamid lizards, Agamidae, Paralaudakia, Laudakia, caudal autotomy, types of regenerates 


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