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Identification of kin structure among Guam rail founders: a comparison of pedigrees and DNA profiles

Molecular Ecology

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Abstract

Kin structure among founders can have a significant effect on subsequent population structure. Here we use the correlation between DNA profile similarity and relatedness calculated from pedigrees to test hypotheses regarding kin structure among founders to the captive Guam rail (Rallus owstoni) population. Five different pedigrees were generated under the following hypotheses: (i) founders are unrelated; (ii) founders are unrelated except for same-nest chicks; (iii) founders from the same major site are siblings; (iv) founders from the same local site are siblings; and (v) founders are related as defined by a UPGMA cluster analysis of DNA similarity data. Relatedness values from pedigrees 1, 2 and 5 had the highest correlation with DNA similarity but the correlation between relatedness and similarity were not significantly different among pedigrees. Pedigree 5 resulted in the highest correlation overall when using only relatedness values that changed as a result of different founder hypotheses. Thus, founders were assigned relatedness based on pedigree 5 because it had the highest correlations with DNA similarity, was the most conservative approach, and incorporated all field data. The analyses indicated that estimating relatedness using DNA profiles remains problematic, therefore we compared mean kinship, a measure of genetic importance, with mean DNA profile similarity to determine if genetic importance among individuals could be determined via use of DNA profiles alone. The significant correlation suggests this method may provide more information about population structure than was previously thought. Thus, DNA profiles can provide a reasonable explanation for founder relatedness and mean DNA profile similarity may be helpful in determining relative genetic importance of individuals when detailed pedigrees are absent.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Identification of kin structure among Guam rail founders: a comparison of pedigrees and DNA profiles
Series title:
Molecular Ecology
Volume
3
Issue:
2
Year Published:
1994
Language:
English
Contributing office(s):
Forest and Rangeland Ecosystem Science Center
Description:
p. 109-119
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Molecular Ecology
First page:
109
Last page:
119
Number of Pages:
11