Facial reconstruction

Search LJMU Research Online

Browse Repository | Browse E-Theses

Evidence for frequent incest in a cooperatively breeding mammal.

Nichols, HJ and Cant, MA and Hoffman, JI and Sanderson, JL (2014) Evidence for frequent incest in a cooperatively breeding mammal. Biology Letters, 10 (12). ISSN 1744-9561

WarningThere is a more recent version of this item available.
[img] Text
s1-ln19014461-96780900-1939656818Hwf1653397558IdV208985944119014461PDF_HI0001.pdf - Accepted Version

Download (229kB)

Abstract

As breeding between relatives often results in inbreeding depression, inbreeding avoidance is widespread in the animal kingdom. However, inbreeding avoidance may entail fitness costs. For example, dispersal away from relatives may reduce survival. How these conflicting selection pressures are resolved is challenging to investigate, but theoretical models predict that inbreeding should occur frequently in some systems. Despite this, few studies have found evidence of regular incest in mammals, even in social species where relatives are spatio-temporally clustered and opportunities for inbreeding frequently arise. We used genetic parentage assignments together with relatedness data to quantify inbreeding rates in a wild population of banded mongooses, a cooperatively breeding carnivore. We show that females regularly conceive to close relatives, including fathers and brothers. We suggest that the costs of inbreeding avoidance may sometimes outweigh the benefits, even in cooperatively breeding species where strong within-group incest avoidance is considered to be the norm.

Item Type: Article
Uncontrolled Keywords: 06 Biological Sciences
Subjects: Q Science > QH Natural history > QH301 Biology
S Agriculture > SF Animal culture
Divisions: Natural Sciences and Psychology
Publisher: The Royal Society
Related URLs:
Date Deposited: 03 Jun 2015 10:36
Last Modified: 24 Dec 2015 00:50
DOI or Identification number: 10.1098/rsbl.2014.0898
URI: http://researchonline.ljmu.ac.uk/id/eprint/1348

Available Versions of this Item

Actions (login required)

View Item View Item