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• W1980362224 abstract "Conservation of the endangered red wolf (Canis rufus) has become a controversial issue because its genetic and morphological composition has been altered by hybridization with coyotes (C. latrans) and possibly gray wolves (C. lupus) making its evolutionary origins difficult to ascertain. The evolutionary hypothesis based on morphological data is that the red wolf had an Early Pleistocene origin and was the predecessor of both modern coyotes and gray wolves. After 1940 red wolves hybridized with coyotes as the species vanished from the wild. In contrast to this ancient origin-recent introgression hypothesis, molecular data are more consistent with an origin through hybridization between gray wolves and coyotes. Interspecific hybridization may have occurred repeatedly over time prior to European settlement in the southcentral United States or may have been induced recently by anthropogenic changes. We review recent molecular evidence and present new results from the analysis of mitochondrial and nuclear DNA markers in pre-1940 populations of red wolves. Our results are inconsistent with an ancient origin of the red wolf and support the hybridization model. We discuss possible hybridization scenarios and reasons for the red wolf reintroduction program to be concerned with the effects of genetic introgression from coyotes. La conservación del lobo rojo, Canis rufus, se ha convertido en un asunto controvertido porque su composición genética y morfológica ha sido alterada por hibridación con coyotes (Canis latrans) y lobos grises (C. lupus), con lo que es dificil comprobar su origen evolutivo. La hipótesis evolutiva, basada en datos morfológicos, es que el lobo rojo se originó en el Pleistoceno temprano y que fue predecesor tanto de coyotes como lobos modernos. Después de 1940, lobos rojos se hibridizaron con coyotes al disminuir sus poblaciones silvestres. En contraste con esta hipótesis de origen antiguo-introgresión reciente, existen datos moleculares que son más consistentes con el origen por hibridación entre coyotes y lobos grises. La hibridación interespecifica pudo haber ocurrido anteriormente a la colonización europea del centro-sur de E.U.A. o pudo ser inducida recientemente por cambios antropogénicos. Revisamos la evidencia molecular reciente y presentamos nuevos resultados a partir del análisis de marcadores mitocondriales y de ADN en poblaciones de lobos rojos previas a 1940. Nuestros resultados son inconsistentes con el origen antiguo del lobo rojo y soportan el modelo de hibridación. Discutimos posibles escenarios de hibridación así como motivos por los que el programa de reintroductión de lobos debe preocuparse por los efectos de la introgresión genética de coyotes." @default.
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• W1980362224 date "1996-10-01" @default.
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• W1980362224 title "Molecular Genetics of Pre-1940 Red Wolves" @default.
• W1980362224 doi "https://doi.org/10.1046/j.1523-1739.1996.10051413.x" @default.
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