Studies focusing on the natural history of species are essential for developing effective conservation measures and evaluating ecological hypotheses. To this end, we describe natural history data of the Cotinga River toadhead turtle, Phrynops tuberosus, in the Banabuiú River in Ceará, Brazil, and evaluated sexual dimorphism, epibionts, and mutilation effects. We hand-captured 134 individuals by snorkeling, over a period of one year, resulting in the capture of 94 males, 24 females, and 16 juveniles. Females had larger head width and body mass than males, while males had longer tail length. One quarter of the turtles captured had some sort of injury or deformation, most common injuries being missing claws, mutilations, and shell deformations. We found no difference in body condition index between mutilated and non-mutilated animals. Mollusks, insects, and leeches were found as epibionts on P. tuberosus and most of the captured turtles had extensive algal cover. Future studies should focus on understanding the effect of mutilations on animal fitness and reproductive success.
The influence of agricultural and urban contamination on leech infestation of freshwater turtles, Phrynops geoffroanus, taken from two areas of the Uberabinha River.
Environ. Monit. Assess.,
Population structure of Mesoclemmys vanderhaegei (Bour, 1973) (Testudines: Chelidae) in the Cerrado of Chapada dos Guimarães, Mato Grosso, Brazil.
The evolution of sexual size dimorphism in reptiles. In:
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38-49. Oxford University Press.
Annelida: Euhirudinea and Acanthobdellidae. In:
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465-504. Academic Press, San Diego, California, USA.
Structure of a population of Hydromedusa maximiliani (Testudines, Chelidae) from Parque Estadual da Serra do Mar, an Atlantic rainforest preserve in southeastern Brazil.
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Primeiro registro de larvas de Chironomus inquinatus Correia, Trivinho-Strixino & Michailova (Diptera, Chironomidae) vivendo no casco do cágado Phrynops geoffroanus Schweigger (Testudines, Chelidae) na região Neotropical.
Population structure of Mesoclemmys vanderhaegei (Testudines, Chelidae) in a silvicultural system in southeastern Brazil.
Rueda-AlmonacidJ.V.CarrJ.L.MittermeierR.A.Rodriguez-MarechaJ.V.MastR.B.VogtR.C.RhodinA.G.Ossa-VelásquezJ.RuedaJ.N.MittermeierC.G. (2007) Las Tortugas e los Cocodrilianos de los Países Andinos del Trópico. Serie de guias tropicales de campo No 6. Conservación Internacional Editorial Panamericana, Formas e Impresos, Bogotá, Colombia.
Prevalance and colonization of Placobdella on two species of freshwater turtles (Graptemys geographica and Sternotherus odoratus).