Microsatellite Diversity and Fitness in Stranded Juvenile Harp Seals (Phoca groenlandica)
A positive relationship between genetic diversity at neutral markers and juvenile survival has been demonstrated for many vertebrate populations, although the correlation is typically weak and the explanation for it remains controversial. We assessed variation at 9–12 microsatellite loci in 65 juven...
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2006
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fthighwire:oai:open-archive.highwire.org:jhered:esl043v1 2023-05-15T17:58:43+02:00 Microsatellite Diversity and Fitness in Stranded Juvenile Harp Seals (Phoca groenlandica) Kretzmann, Maria Mentzer, Laura DiGiovanni, Robert Leslie, Matthew S. Amato, George 2006-12-12 13:45:25.0 text/html http://jhered.oxfordjournals.org/cgi/content/short/esl043v1 https://doi.org/10.1093/jhered/esl043 en eng Oxford University Press http://jhered.oxfordjournals.org/cgi/content/short/esl043v1 http://dx.doi.org/10.1093/jhered/esl043 Copyright (C) 2006, American Genetic Association Article TEXT 2006 fthighwire https://doi.org/10.1093/jhered/esl043 2013-05-28T10:24:08Z A positive relationship between genetic diversity at neutral markers and juvenile survival has been demonstrated for many vertebrate populations, although the correlation is typically weak and the explanation for it remains controversial. We assessed variation at 9–12 microsatellite loci in 65 juvenile harp seals ( Phoca groenlandica ) that stranded in poor condition around Long Island, NY, from 2001 to 2004. Compared with seals that died, surviving individuals had slightly higher measures of mean d 2, which reflects the size difference between alleles within an individual and provides an index of outbreeding. In contrast, there were no significant differences between survivors and nonsurvivors in heterozygosity or estimates of internal relatedness. This pattern is attributed to the fact that these microsatellite markers were exceptionally variable in this species (9–22 alleles per locus), and all individuals were heterozygous at most loci. Under these circumstances, mean d 2 may provide a powerful measure for assessing diversity–fitness correlations. Text Phoca groenlandica HighWire Press (Stanford University) Long Island Journal of Heredity 97 6 555 560 |
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HighWire Press (Stanford University) |
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English |
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Article |
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Article Kretzmann, Maria Mentzer, Laura DiGiovanni, Robert Leslie, Matthew S. Amato, George Microsatellite Diversity and Fitness in Stranded Juvenile Harp Seals (Phoca groenlandica) |
topic_facet |
Article |
description |
A positive relationship between genetic diversity at neutral markers and juvenile survival has been demonstrated for many vertebrate populations, although the correlation is typically weak and the explanation for it remains controversial. We assessed variation at 9–12 microsatellite loci in 65 juvenile harp seals ( Phoca groenlandica ) that stranded in poor condition around Long Island, NY, from 2001 to 2004. Compared with seals that died, surviving individuals had slightly higher measures of mean d 2, which reflects the size difference between alleles within an individual and provides an index of outbreeding. In contrast, there were no significant differences between survivors and nonsurvivors in heterozygosity or estimates of internal relatedness. This pattern is attributed to the fact that these microsatellite markers were exceptionally variable in this species (9–22 alleles per locus), and all individuals were heterozygous at most loci. Under these circumstances, mean d 2 may provide a powerful measure for assessing diversity–fitness correlations. |
format |
Text |
author |
Kretzmann, Maria Mentzer, Laura DiGiovanni, Robert Leslie, Matthew S. Amato, George |
author_facet |
Kretzmann, Maria Mentzer, Laura DiGiovanni, Robert Leslie, Matthew S. Amato, George |
author_sort |
Kretzmann, Maria |
title |
Microsatellite Diversity and Fitness in Stranded Juvenile Harp Seals (Phoca groenlandica) |
title_short |
Microsatellite Diversity and Fitness in Stranded Juvenile Harp Seals (Phoca groenlandica) |
title_full |
Microsatellite Diversity and Fitness in Stranded Juvenile Harp Seals (Phoca groenlandica) |
title_fullStr |
Microsatellite Diversity and Fitness in Stranded Juvenile Harp Seals (Phoca groenlandica) |
title_full_unstemmed |
Microsatellite Diversity and Fitness in Stranded Juvenile Harp Seals (Phoca groenlandica) |
title_sort |
microsatellite diversity and fitness in stranded juvenile harp seals (phoca groenlandica) |
publisher |
Oxford University Press |
publishDate |
2006 |
url |
http://jhered.oxfordjournals.org/cgi/content/short/esl043v1 https://doi.org/10.1093/jhered/esl043 |
geographic |
Long Island |
geographic_facet |
Long Island |
genre |
Phoca groenlandica |
genre_facet |
Phoca groenlandica |
op_relation |
http://jhered.oxfordjournals.org/cgi/content/short/esl043v1 http://dx.doi.org/10.1093/jhered/esl043 |
op_rights |
Copyright (C) 2006, American Genetic Association |
op_doi |
https://doi.org/10.1093/jhered/esl043 |
container_title |
Journal of Heredity |
container_volume |
97 |
container_issue |
6 |
container_start_page |
555 |
op_container_end_page |
560 |
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1766167400662695936 |