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Cuadernos de herpetología

versión On-line ISSN 1852-5768

Cuad. herpetol. vol.29 no.1 San Salvador de Jujuy mayo 2015

 

NOVEDAD ZOOGEOGRAFICA

A new noteworthy record of Phrynops williamsi Rhodin & Mittermeier (Testudines, Chelidae) in Uruguay

Claudio Borteiro, Francisco Kolenc, Carlos Prigioni

Seccion Herpetologia, Museo Nacional de Historia Natural, 25 de Mayo 582, Montevideo, Uruguay.

Recibida: 04/12/13
Revisada: 04/02/14
Aceptada: 14/03/14
Editor Asociado: M. Cabrera


Locality.— Uruguay, Tacuarembo Department, San Gregorio de Polanco (32°36'S, 55°50'W). We report the finding of a juvenile specimen of Phrynops williamsi in central Uruguay (MNHN 9487). It measured 40 mm of carapace length and was collected in February 2013 by Tiago Delpino in a streamlet tributary of the Negro River. This new record suggests that P. williamsi is widely distributed over the Negro River basin, at the southern boundaries of the species geographic range.

Comments.— The Neotropical turtle Phrynops williamsi (Testudines, Chelidae) is a scarcely studied species distributed in southern Brazil, north-eastern Argentina, Paraguay and Uruguay (McCord et al., 2001; van Dijk et al., 2011). It inhabits lotic environments with rocky beds and fast flowing waters (Hensel, 1868; Waller and Chebez, 1987). A few records of this species are available from Uruguay, mainly in the north. We present herein a new noteworthy record of P. williamsi in this country and review its current distribution. Known localities of P. williamsi in Uruguay are shown in Figure 1.


Figure 1. Distribution map of Phrynops williamsi in Uruguay. Localities: 1, Arroyo Chapicuy Grande; 2, Salto Grande; 3, Arapey River; 4, Arroyo Tigre; 5, Arrocera Conti; 6, Arroyo Itacumbú; 7, Yuquerí; 8, Picada del Negro Muerto (Vaz-Ferreira and Sierra 1960, Freiberg 1972, Carreira et al. 2005); 9, Arroyo Cuñapirú (Rhodin and Mittermeier 1983); 10, Yaguarón River (Buskirk 1989); 11, Rincón del Bonete (Freiberg 1972); 12, San Gregorio de Polanco, and specimen MNHN 9487 (present study).

The presence of Phrynops williamsi in Uruguay was documented in the north by Vaz-Ferreira and Sierra (1960) and Freiberg (1972) in the Cuareim River and Arroyo Chapicuy Grande respectively. Rhodin and Mittermeier (1983) mentioned the localities Arroyo Cunapiru also in northern Uruguay and the Yaguaron River in the northeast, with no voucher specimens being cited. The occurrence of this turtle in the Yaguaron River was confirmed a few years later by Buskirk (1989). More recently, additional localities were reported for the Arapey, Cuareim and Uruguay Rivers in northern Uruguay (Carreira et al., 2005). In contrast, there is only vague information on the presence of Phrynops williamsi more southwards in this country. Freiberg (1972) quotes the sighting of specimens in central Uruguay by his Uruguayan colleague R. Vaz-Ferreira at Rincon del Bonete, in the Negro River but this record awaited confirmation. In addition, Rhodin and Mit- Seccion Herpetologia, Museo Nacional de Historia Natural, 25 de Mayo 582, Montevideo, Uruguay. Cuad. herpetol. 29 (1): 95-96 (2015) termeier (1983) reported a specimen from Salto del Penitente (Lavalleja Department) in south central Uruguay deposited at the herpetological collection of Museo Nacional de Historia Natural, Montevideo, as MNHN 1582; this specimen is actually a female collected in northern Uruguay ("Artigas") according to the MNHN database. 

Acknowledgements

We are especially grateful to Laura Garcia for providing the specimen MNHN 9487, and to Gabriel Laufer and Diego Arrieta (MNHN). We thank Diego Baldo for critical reading of the manuscript and preparation of the figure. Stephan Bohm, Raissa Bressan, Martin Pereyra and Melitta Meneghel shared bibliography and/or relevant information.CB and FK acknowledge ANII/SNI.

Literature cited

1. Buskirk, J.R. 1989. Field observations on Phrynops williamsi and other Uruguayan chelonians. Vivarium 1: 8-11.         [ Links ]

2. Carreira, S.; Meneghel, M. & Achaval, F. 2005. Reptiles del Uruguay. Universidad de la Republica, Facultad de Ciencias, Montevideo.         [ Links ]

3. Freiberg, M. 1972. Sobre la validez especifica de Phrynops hilarii (D. & B.) (Testudines, Chelidae). Acta Zoológica Lilloana 29: 247-260.         [ Links ]

4. Hensel, R. 1868. Beitrage zur Kenntniss der Wirbelthiere Sudbrasiliens. Archiv für Naturgeschichte (Berlin) 1: 323-375.         [ Links ]

5. McCord, W.P.; Joseph-Ouni, M. & Lamar, W.W. 2001. Taxonomic reevaluation of Phrynops (Testudines: Chelidae) with the description of two new genera and a new species of Batrachemys. Revista de Biología Tropical 49: 715-764.         [ Links ]

6. Rhodin, A.G.J. & Mittermeier, R.A. 1983. Description of Phrynops williamsi, a new species of chelid turtle of the South American P. geoffroanus complex: 58-73. In: Rhodin, A.G.J. & Miyata, K. (eds.) Advances in Herpetology and Evolutionary Biology. Essays in Honor of Ernest E. Williams. Museum of Comparative Zoology, Cambridge,Massachusetts.         [ Links ]

7. van Dijk, P.P.; Iverson, J.B.; Shaffer, H.B., Bour, R. & Rhodin, A.G.J. 2011. Turtles of the world, 2011 update: annotated checklist of taxonomy, synonymy, distribution, and conservation status. In: Rhodin, A.G.J.; Pritchard, P.C.H..; van Dijk, P.P.; Samure, R.A.; Buhlmann, K.A.; Iverson, J.B. & Mittermeier, R.A. (eds.) Conservation Biology of Freshwater Turtles and Tortoises: A Compilation Project of the IUCN/ SSC Tortoise and Freshwater Turtle Specialist Group, Chelonian Research Foundation. Chelonian Research Monographs 5.         [ Links ]

8. Vaz-Ferreira, R. & Sierra de Soriano, B. 1960. Notas sobre reptiles del Uruguay. Revista de la Facultad de Humanidades y Ciencias (Montevideo) 18: 133-206.         [ Links ]

9. Waller, T. & Chebez, J.C. 1987. Notas sobre las tortugas de la Provincia de Misiones, Argentina e inclusion de Phrynops williamsi Rhodin y Mittermeier, 1983 (Testudines: Chelidae) en la herpetofauna argentina. Historia Natural (Corrientes) 7: 53-59.

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