Título
Morphological abnormalities in anurans from central Mexico: a case study (anura: Ranidae, hylidae)
Autor
OCTAVIO MONROY VILCHIS
LOURDES LIZZOULI PARRA LOPEZ
Jorge Alberto Lugo de la Fuente
MIGUEL ANGEL BALDERAS PLATA
MARTHA MARIELA ZARCO GONZALEZ
Nivel de Acceso
Acceso Abierto
Materias
Amphibia: Anura:hyla arenicolor - ([1013-4425]) Lithobates forreri - ([1013-4425]) Lithobates zweifeli - ([1013-4425]) morphological abnormalities - ([1013-4425]) malformations - ([1013-4425]) heavy metals - ([1013-4425]) parasites - ([1013-4425]) veterinary medicine - ([1013-4425]) ecotoxicology - ([1013-4425]) Sierra Nanchititla Natural Reserve - ([1013-4425]) México - ([1013-4425]) MEDICINA Y CIENCIAS DE LA SALUD - (CTI)
Resumen o descripción
high rates of morphological abnormalities (malformations) in amphibians are attributed to parasites, chemical pollution, uv radiation and selective predation. the objectives of this study were to quantify and qualify the external, gross-morphological abnormalities in anurans of the sierra nanchititla natural Reserve (Mexico) and to identify possible causes. six specimens (6.23 %) out of 95 Lithobates forreri (BoulengeR, 1883), as well as two “bycatch“ specimens of Lithobates zweifeli (hIllIs, FRost & WeBB, 1984), and Hyla arenicolor CoPe, 1866, showed a total of eight types of morphological abnormalities. the observed abnormality rate thus slightly exceeded the assumed background rate of five percent in a population. among macroparasites, nematoda (Ozwaldocruzia sp. and Rhabdias savagei) and trematoda (Haematoloechus sp. and Gorgoderina tarascae) were present in internal organs, and chigger mites (Hannemania sp.) on the skin. In the muscle samples, lead (Pb) and copper (Cu) were not detected nor quantified, whereas low (physiological) concentrations of zinc (Zn) were found. In the water samples, Pb was not detected and Zn and Cu was within the level for rivers as accepted in Mexico. the authors reject as possible causes for the observed, increased rate of abnormalities: (1) the effect of macroparasites, due to the absence of trematoda of the genus Riberoia that are known to develop anatomical abnormalities; and, (2) chemical pollution by Pb, Cu and Zn. Possible causes are discussed.
Editor
Herpetozoa
Fecha de publicación
30 de enero de 2015
Tipo de publicación
Artículo
Recurso de información
Fuente
1013-4425
Idioma
Inglés
Relación
27;
Audiencia
Estudiantes
Investigadores
Repositorio Orígen
REPOSITORIO INSTITUCIONAL DE LA UAEM
Descargas
294