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Oryzomys texensisAllen, 1894, the Texas Marsh Rice Rat, is a yellowish gray-brown oryzomyine rodent with whitish feet and venter, black eyes, small hairy ears, short vibrissae, and a tail about one-half of total length. It was elevated to species status based on the results of an extensive molecular genetics analysis of the O. palustris complex. The poorly defined eastern boundary of O. texensis includes Mississippi, Arkansas, southern Missouri, and southern Illinois, with populations extending westward to southeastern Kansas, eastern Oklahoma, eastern and coastal Texas, into northeastern Tamaulipas, Mexico. Present in tidal marshes and other habitats near water, O. texensis is omnivorous, with some populations being highly carnivorous.
Oryzomys texensisAllen, 1894, es un roedor de la tribu Oryzomyini, de color marrón grisáceo amarillento con pies y vientre blanquecinos, ojos negros, pequeñas orejas velludas, vibrisas cortas y una cola que constituye aproximadamente la mitad de su longitud total. Fue elevado del nivel de subespecie de O. palustris a especie en base a resultados de un extenso análisis de genética molecular del complejo O. palustris. El margen oriental de la distribución geográfica de O. texensis está mal definido e incluye partes de Mississippi y Arkansas, así como el sur de Missouri y sur de Illinois, con poblaciones adicionales extendiéndose en dirección oeste hacia el sureste de Kansas, este de Oklahoma, planicie costera y este de Texas y hasta el extremo suroccidental de Texas y noroeste de Tamaulipas, México. Está presente en marismas, humedales, y otros hábitats cercanos al agua. Si bien es omnívoro, algunas poblaciones constan de individuos mayormente carnívoros.
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