Disminución de los movimientos de las hembras adultas de venado bura durante el invierno en el árido suroeste de América del Norte
DOI:
https://doi.org/10.22201/ib.20078706e.2024.95.5478Palabras clave:
Conservación de energía, Movimientos, Venado bura, Nuevo MéxicoResumen
Los ciervos en entornos templados del norte muestran adaptaciones de comportamiento y fisiológicas para
conservar energía durante el invierno, incluyendo una disminución en sus movimientos. Se ha explorado poco si estos comportamientos persisten en ambientes templados más cálidos, como el suroeste árido. Comparamos los movimientos diarios, mediante modelos de movimiento continuo y movimientos mínimos en línea recta subdiarios (4 horas) de hembras adultas de venado bura entre las estaciones de invierno y primavera-otoño en el centro-sur de Nuevo México. Los ciervos se movieron menos durante el invierno, tanto diario (2.90 vs. 4.34 km/día) como subdiario (302 vs. 409 m). Además, para ciervos con datos de movimiento en estaciones sucesivas, los movimientos en invierno fueron menores (diarios = -1.05 km/día, subdiarios = -91 m) en comparación con la primavera-otoño previa o siguiente. Nuestros resultados respaldan la disminución de los movimientos durante el invierno en los inviernos menos extremos del suroeste árido. Dado que algunos estímulos inmediatos (por ejemplo, nieve profunda,
temperaturas muy frías) asociados con comportamientos de conservación de energía están ausentes en el suroeste árido, es evidente que nuestros resultados apoyan que la baja calidad y disponibilidad de forraje son los principales factores que impulsan este comportamiento.
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