DNA FINGERPRINTING REVEALS HIGH-LEVELS OF INBREEDING IN COLONIES OF THE EUSOCIAL NAKED MOLE-RAT

被引：261

作者：

REEVE, HK ^{[1
]}

WESTNEAT, DF ^{[1
]}

NOON, WA ^{[1
]}

SHERMAN, PW ^{[1
]}

AQUADRO, CF ^{[1
]}

机构：

[1] CORNELL UNIV,GENET & DEV SECT,ITHACA,NY 14853

来源：

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA | 1990年 / 87卷 / 07期

关键词：

Cooperative breeding; Eusociality; Hypervariable minisatellite DNA; Kin selection;

D O I：

10.1073/pnas.87.7.2496

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：

Using the technique of DNA fingerprinting, we investigated the genetic structure within and among four wild-caught colonies (n = 50 individuals) of a eusocial mammal, the naked mole-rat (Heterocephalus glaber; Rodentia: Bathyergidae). We found that DNA fingerprints of colonymates were strikingly similar and that between colonies they were much more alike than fingerprints of non-kin in other free-living vertebrates. Extreme genetic similarity within colonies is due to close genetic relationship (mean relatedness estimate ± SE, r̄ = 0.81 ± 0.10), which apparently results from consanguineous mating. The inbreeding coefficient (F = 0.45 ± 0.18) is the highest yet recorded among wild mammals. The genetic structure of naked mole-rat colonies lends support to kin selection and ecological constraints models for the evolution of cooperative breeding and eusociality.

引用

页码：2496 / 2500

页数：5

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