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Herpetological Bulletin 131 (2015) 29
Hemidactylus agrius: Polydactyly and tail bifurcation
specimen, a second record of tail bifurcation was observed inthe eld, but the lizard escaped the capture; in this instancethe additional tail had developed in the individual’s bodylateral plane and was similar in size to the main tail.
The presence of a polydactyly in the H. agrius population
of ESEC Seridó corresponds to a frequency of occurrence of1.6%, a high estimate when compared to the rates reported in
the literature for other lizards, for example, 0.5% in Lacertaschreiberi (Megia, 2012) and 0.6% in Tropidurus etheridgei (Pelegrin, 2007). Similar cases have been recorded for otherlizards including Podarcis muralis (Lazić & Crnobrnja-Isailović, 2012) and Liolaemus petrophilus (Minoli et al.,2009).
The presence of two cases of tail bifurcation withinthe population of H. agrius of ESEC Seridó correspondsto a frequency of occurrence of 3.1%, suggesting this typeof morphological change is relatively common in lizard
populations. The injuries resulted in lateral and medialbifurcations to the body and represent additions to the two
types of bifurcations described in the literature (McKelvy &Stark, 2012). This is the rst record of polydactyly and tailbifurcation for H. agrius.
ACKNOWLEDGMENTS
We thank L. Anjos and M. Pichorim for helpful commentson a rst draft of the manuscript, and the staff of EcologicalStation of the Seridó logistical support on the eld activities.This study was supported by research grants from theCoordernação de Aperfeiçoamento de Pessoal de NívelSuperior (CAPES) to MJMA, and from the Conselho Nacional
de Desenvolvimento Cientíco e Tecnológico (CNPq) toEMXF (process 304077/200819). The permit for collectingthe lizards was granted by ICMBio/Sisbio (Permit 36189-1).
REFERENCES
Arnold, E.N. (1988). Caudal autotomy as a defence. In, Biologyof the Reptilia, pp.235-273. Gans, C. & Huey, R.B. (Eds.).New York: Liss Inc.
Bauer, A.M., Hathaway, S.A. & Fisher, R.N. (2009). Polydactylyin the Central Pacic Gecko, Lepidodactylus sp. (Squamata:Gekkonidae). Herpetology Notes 2: 243-246.
Gogliath, M., Pereira, L.C.M., Nicola, P.A. & Ribeiro, L.B. (2012) Ameiva ameiva (Giant Ameiva). Bifurcation. Herpetological
Review 43: 129.Kaliontzopoulou, A., Salvi, D., Gomes, V., Maia, J.P.M.C. &
Kaliontzopoulos, P. (2013). Polydactyly in the Tyrrhenianwall lizard (Podarcis tiliguerta). Acta Herpetologica 8: 75-78.
Lazić, M.M. & Crnobrnja-Isailović, J. (2012). Polydactyly in theCommon Wall Lizard Podarcis muralis (Squamata:Lacertidae). Herpetology Notes 5: 277-279.
McKelvy, A.D. & Stark, C. (2012). Plestiodon fasciatus (Common Five-lined Skink). Bifurcation. Herpetological
Review 43: 138.Megía, R. (2012). Un caso de polidactilia en Lacerta schreiberien el Sistema Central. Boletin de la Asociacion Herpetologica
Española 23: 54-57.Meyer, V., Preest, M.R. & Lochetto, S.M. (2002). Physiology of
original and regenerated lizard tails. Herpetologica 58: 75-86.Minoli, I., Feltrin, N. & Ávila, L.J. (2009). Un caso de polidactilia
en Liolaemus petrophilus (Iguania: Squamata: Liolaemini).Cuadernos de Herpetologia 23: 89-92.
Pelegrin, N. (2007). Presence of a polydactylous Tropidurusetheridgei (Squamata: Iguanidae: Tropidurinae) in theDry Chaco of Córdoba Province, Argentina. Cuadernos de
Herpetologia 21: 115-116.
Accepted: 10 February 2015