Genotypic diversity of asexual Ostracoda from a low arctic site
Abstract The crustacean subclass Ostracoda shows an exceptionally high incidence of transitions from sexual to asexual reproduction, whose cause remains uncertain. In the current study, patterns of allozymic variation were examined in 12 species of asexual ostracodes at a low arctic site. Population...
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Oxford University Press (OUP)
1990
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croxfordunivpr:10.1046/j.1420-9101.1990.3050391.x 2024-05-12T07:58:52+00:00 Genotypic diversity of asexual Ostracoda from a low arctic site Havel, John E. Hebert, Paul D. N. Delorme, L. Denis 1990 http://dx.doi.org/10.1046/j.1420-9101.1990.3050391.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1046%2Fj.1420-9101.1990.3050391.x https://onlinelibrary.wiley.com/doi/pdf/10.1046/j.1420-9101.1990.3050391.x en eng Oxford University Press (OUP) http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Evolutionary Biology volume 3, issue 5-6, page 391-410 ISSN 1010-061X 1420-9101 Ecology, Evolution, Behavior and Systematics journal-article 1990 croxfordunivpr https://doi.org/10.1046/j.1420-9101.1990.3050391.x 2024-04-18T08:18:33Z Abstract The crustacean subclass Ostracoda shows an exceptionally high incidence of transitions from sexual to asexual reproduction, whose cause remains uncertain. In the current study, patterns of allozymic variation were examined in 12 species of asexual ostracodes at a low arctic site. Populations of 11 species had genotypic frequencies consistent with apomixis, having gross departures from Hardy‐Weinberg expectations and non‐random associations between loci. Allozyme phenotypes suggest that polyploidy is common in most asexual ostracode species in arctic ponds. Although most species had low clonal diversity, 3 had unusually high diversity, with a maximum of 18 clones detected per pond. Asexual species belonging to genera with sexual relatives had higher clonal diversities than those from genera without sexuals, suggesting that sexuals may serve as the source of this clonal diversity. Article in Journal/Newspaper Arctic Oxford University Press Arctic Journal of Evolutionary Biology 3 5-6 391 410 |
institution |
Open Polar |
collection |
Oxford University Press |
op_collection_id |
croxfordunivpr |
language |
English |
topic |
Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Ecology, Evolution, Behavior and Systematics Havel, John E. Hebert, Paul D. N. Delorme, L. Denis Genotypic diversity of asexual Ostracoda from a low arctic site |
topic_facet |
Ecology, Evolution, Behavior and Systematics |
description |
Abstract The crustacean subclass Ostracoda shows an exceptionally high incidence of transitions from sexual to asexual reproduction, whose cause remains uncertain. In the current study, patterns of allozymic variation were examined in 12 species of asexual ostracodes at a low arctic site. Populations of 11 species had genotypic frequencies consistent with apomixis, having gross departures from Hardy‐Weinberg expectations and non‐random associations between loci. Allozyme phenotypes suggest that polyploidy is common in most asexual ostracode species in arctic ponds. Although most species had low clonal diversity, 3 had unusually high diversity, with a maximum of 18 clones detected per pond. Asexual species belonging to genera with sexual relatives had higher clonal diversities than those from genera without sexuals, suggesting that sexuals may serve as the source of this clonal diversity. |
format |
Article in Journal/Newspaper |
author |
Havel, John E. Hebert, Paul D. N. Delorme, L. Denis |
author_facet |
Havel, John E. Hebert, Paul D. N. Delorme, L. Denis |
author_sort |
Havel, John E. |
title |
Genotypic diversity of asexual Ostracoda from a low arctic site |
title_short |
Genotypic diversity of asexual Ostracoda from a low arctic site |
title_full |
Genotypic diversity of asexual Ostracoda from a low arctic site |
title_fullStr |
Genotypic diversity of asexual Ostracoda from a low arctic site |
title_full_unstemmed |
Genotypic diversity of asexual Ostracoda from a low arctic site |
title_sort |
genotypic diversity of asexual ostracoda from a low arctic site |
publisher |
Oxford University Press (OUP) |
publishDate |
1990 |
url |
http://dx.doi.org/10.1046/j.1420-9101.1990.3050391.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1046%2Fj.1420-9101.1990.3050391.x https://onlinelibrary.wiley.com/doi/pdf/10.1046/j.1420-9101.1990.3050391.x |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Journal of Evolutionary Biology volume 3, issue 5-6, page 391-410 ISSN 1010-061X 1420-9101 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1046/j.1420-9101.1990.3050391.x |
container_title |
Journal of Evolutionary Biology |
container_volume |
3 |
container_issue |
5-6 |
container_start_page |
391 |
op_container_end_page |
410 |
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1798839493472550912 |