Genetic evidence for two species of elephant in Africa

被引：229

作者：

Roca, AL

Georgiadis, N

Pecon-Slattery, J

O'Brien, SJ ^{[1
]}

机构：

[1] NCI, Lab Genom Divers, Frederick, MD 21702 USA

[2] Mpala Res Ctr, Nanyuki, Kenya

来源：

SCIENCE | 2001年 / 293卷 / 5534期

关键词：

D O I：

10.1126/science.1059936

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Elephants from the tropical forests of Africa are morphologically distinct from savannah or bush elephants. Dart-biopsy samples from 195 free-ranging African elephants in 21 populations were examined for DNA sequence variation in four nuclear genes (1732 base pairs). Phylogenetic distinctions between African forest elephant and savannah elephant populations corresponded to 58% of the difference in the same genes between elephant genera Loxodonta (African) and Elephas (Asian). Large genetic distance, multiple genetically fixed nucleotide site differences, morphological and habitat distinctions, and extremely limited hybridization of gene flow between forest and savannah elephants support the recognition and conservation management of two African species: Loxodonta africana and Loxodonta cyclotis.

引用

页码：1473 / 1477

页数：5

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