中文名:

侏型喙鲸

学名 - 英文名:

Mesoplodon peruvianus Reyes, Mead, & Van Waerebeek, 1991 - Pygmy beaked whale

特征描述:

The pygmy beaked whale is the most recently described member of the genus, and appears to be the smallest of the species of Mesoplodon. They tend to be dark grey above and lighter below, apparently with little scarring. They have small, triangular, wide-based dorsal fins that are shaped like those of harbour porpoises. The most distinctive characteristic is the teeth, which are extremely small and egg-shaped in cross-section (although generally they are not visible in sightings at sea).

容易混淆为:

The small triangular dorsal fin is different from that of most other species of Mesoplodon, but using this character alone, it would be very difficult to dismiss the possibility of other species in sightings at sea.

个体大小:

This is the smallest known species of Mesoplodon; maximum known length is 3.7 m, apparently with males larger than females. At birth, these animals are about 1.6 m long.

地理分布:

The pygmy beaked whale is known only from 10 specimens and a few possible sightings off Peru, all south of 8*S and in the eastern tropical Pacific. Recently, there have been 2 strandings of pygmy beaked whales near La Paz, Baja California, Mexico.

生物学及行为:

The diet consists of small mid-water fishes, oceanic squid, and shrimps. Groups of 2 or 3 animals have been observed.

利用价值:

Pygmy beaked whales are taken in the driftnet fishery for sharks off the coast of Peru.

IUCN等级:

Insufficiently known.

异名:

Mesoplodon peruvianus Reyes, Mead, & Van Waerebeek, 1991

俗名:

Baleine * bec pygm*e [法语] Ballena picuda [西班牙语] Humboldt spitssnuitdolfijn [荷兰语] Pygmy beaked whale [英语]

FAO物种代码:

ZIPH Mes 6 [FAO Species code] BPW [FAO Species code]


From ETI/FAO 1996
中国科学院水生生物研究所 1997