阿達克斯羚羊或阿達克斯鼻羚羊 Addax Antelope or Addax nasomaculatus
阿達克斯羚羊(Addax nasomaculatus),又稱白羚羊、螺旋角羚羊,是一種原產於撒哈拉沙漠的羚羊。它是 Addax 屬的唯一成員,由 Henri de Blainville 於 1816 年首次進行科學描述。正如其別名所暗示的那樣,蒼白羚羊有長長的螺旋角——雌性通常為 55 至 80 厘米(22 至 31 英寸),雄性通常為 70 至 85 厘米(28 至 33 英寸)。雄性的肩高為 105 至 115 厘米(41 至 45 英寸),雌性的肩高為 95 至 110 厘米(37 至 43 英寸)。它們是性別二態性的,因為雌性比雄性小。被毛的顏色取決於季節——在冬天,它是灰棕色的,後軀和腿是白色的,頭部、頸部和肩膀上有棕色的長毛;在夏天,被毛幾乎完全變成白色或沙金色。
The addax (Addax nasomaculatus), also known as the white antelope and the screwhorn antelope, is an antelope native to the Sahara Desert. The only member of the genus Addax, it was first described scientifically by Henri de Blainville in 1816. As suggested by its alternative name, the pale antelope has long, spiral horns – typically 55 to 80 cm (22 to 31 in) in females and 70 to 85 cm (28 to 33 in) in males. Males stand from 105 to 115 cm (41 to 45 in) at the shoulder, with females at 95 to 110 cm (37 to 43 in). They are sexually dimorphic, as the females are smaller than the males. The colour of the coat depends on the season – in the winter, it is greyish-brown with white hindquarters and legs, and long, brown hair on the head, neck, and shoulders; in the summer, the coat turns almost completely white or sandy blonde.
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