rbc L sequences reveal multiple cryptic introductions of the Japanese red alga Polysiphonia harveyi
Abstract In Europe, the last 20 years have seen a spectacular increase in accidental introductions of marine species, but it has recently been suggested that both the actual number of invaders and their impacts have been seriously underestimated because of the prevalence of sibling species in marine...
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crwiley:10.1046/j.1365-294x.2001.01240.x 2024-09-30T14:39:30+00:00 rbc L sequences reveal multiple cryptic introductions of the Japanese red alga Polysiphonia harveyi McIvor, Lynne Maggs, Christine A. Provan, Jim Stanhope, Michael J. 2001 http://dx.doi.org/10.1046/j.1365-294x.2001.01240.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1046%2Fj.1365-294X.2001.01240.x https://onlinelibrary.wiley.com/doi/pdf/10.1046/j.1365-294X.2001.01240.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor http://doi.wiley.com/10.1002/tdm_license_1.1 http://onlinelibrary.wiley.com/termsAndConditions#vor Molecular Ecology volume 10, issue 4, page 911-919 ISSN 0962-1083 1365-294X journal-article 2001 crwiley https://doi.org/10.1046/j.1365-294x.2001.01240.x 2024-09-05T05:09:07Z Abstract In Europe, the last 20 years have seen a spectacular increase in accidental introductions of marine species, but it has recently been suggested that both the actual number of invaders and their impacts have been seriously underestimated because of the prevalence of sibling species in marine habitats. The red alga Polysiphonia harveyi is regarded as an alien in the British Isles and Atlantic Europe, having appeared in various locations there during the past 170 years. Similar or conspecific populations are known from Atlantic North America and Japan. To choose between three competing hypotheses concerning the origin of P. harveyi in Europe, we employed rbc L sequence analysis in conjunction with karyological and interbreeding data for samples and isolates of P. harveyi and various congeners from the Pacific and North Atlantic Oceans. All cultured isolates of P. harveyi were completely interfertile, and there was no evidence of polyploidy or aneuploidy. Thus, this biological species is both morphologically and genetically variable: intraspecific rbc L divergences of up to 2.1% are high even for red algae. Seven rbc L haplotypes were identified. The four most divergent haplotypes were observed in Japanese samples from Hokkaido and south‐central Honshu, which are linked by hypothetical ‘missing’ haplotypes that may be located in northern Honshu. These data are consistent with Japan being the centre of diversity and origin for P. harveyi . Two non‐Japanese lineages were linked to Hokkaido and Honshu, respectively. A single haplotype was found in all North Atlantic and Mediterranean accessions, except for North Carolina, where the haplotype found was the same as that invading in New Zealand and California. The introduction of P. harveyi into New Zealand has gone unnoticed because P. strictissima is a morphologically indistinguishable native sibling species. The sequence divergence between them is 4–5%, greater than between some morphologically distinct red algal species. Two different types of cryptic ... Article in Journal/Newspaper North Atlantic Wiley Online Library Pacific New Zealand Molecular Ecology 10 4 911 919 |
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Wiley Online Library |
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crwiley |
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English |
description |
Abstract In Europe, the last 20 years have seen a spectacular increase in accidental introductions of marine species, but it has recently been suggested that both the actual number of invaders and their impacts have been seriously underestimated because of the prevalence of sibling species in marine habitats. The red alga Polysiphonia harveyi is regarded as an alien in the British Isles and Atlantic Europe, having appeared in various locations there during the past 170 years. Similar or conspecific populations are known from Atlantic North America and Japan. To choose between three competing hypotheses concerning the origin of P. harveyi in Europe, we employed rbc L sequence analysis in conjunction with karyological and interbreeding data for samples and isolates of P. harveyi and various congeners from the Pacific and North Atlantic Oceans. All cultured isolates of P. harveyi were completely interfertile, and there was no evidence of polyploidy or aneuploidy. Thus, this biological species is both morphologically and genetically variable: intraspecific rbc L divergences of up to 2.1% are high even for red algae. Seven rbc L haplotypes were identified. The four most divergent haplotypes were observed in Japanese samples from Hokkaido and south‐central Honshu, which are linked by hypothetical ‘missing’ haplotypes that may be located in northern Honshu. These data are consistent with Japan being the centre of diversity and origin for P. harveyi . Two non‐Japanese lineages were linked to Hokkaido and Honshu, respectively. A single haplotype was found in all North Atlantic and Mediterranean accessions, except for North Carolina, where the haplotype found was the same as that invading in New Zealand and California. The introduction of P. harveyi into New Zealand has gone unnoticed because P. strictissima is a morphologically indistinguishable native sibling species. The sequence divergence between them is 4–5%, greater than between some morphologically distinct red algal species. Two different types of cryptic ... |
format |
Article in Journal/Newspaper |
author |
McIvor, Lynne Maggs, Christine A. Provan, Jim Stanhope, Michael J. |
spellingShingle |
McIvor, Lynne Maggs, Christine A. Provan, Jim Stanhope, Michael J. rbc L sequences reveal multiple cryptic introductions of the Japanese red alga Polysiphonia harveyi |
author_facet |
McIvor, Lynne Maggs, Christine A. Provan, Jim Stanhope, Michael J. |
author_sort |
McIvor, Lynne |
title |
rbc L sequences reveal multiple cryptic introductions of the Japanese red alga Polysiphonia harveyi |
title_short |
rbc L sequences reveal multiple cryptic introductions of the Japanese red alga Polysiphonia harveyi |
title_full |
rbc L sequences reveal multiple cryptic introductions of the Japanese red alga Polysiphonia harveyi |
title_fullStr |
rbc L sequences reveal multiple cryptic introductions of the Japanese red alga Polysiphonia harveyi |
title_full_unstemmed |
rbc L sequences reveal multiple cryptic introductions of the Japanese red alga Polysiphonia harveyi |
title_sort |
rbc l sequences reveal multiple cryptic introductions of the japanese red alga polysiphonia harveyi |
publisher |
Wiley |
publishDate |
2001 |
url |
http://dx.doi.org/10.1046/j.1365-294x.2001.01240.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1046%2Fj.1365-294X.2001.01240.x https://onlinelibrary.wiley.com/doi/pdf/10.1046/j.1365-294X.2001.01240.x |
geographic |
Pacific New Zealand |
geographic_facet |
Pacific New Zealand |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Molecular Ecology volume 10, issue 4, page 911-919 ISSN 0962-1083 1365-294X |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor http://doi.wiley.com/10.1002/tdm_license_1.1 http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1046/j.1365-294x.2001.01240.x |
container_title |
Molecular Ecology |
container_volume |
10 |
container_issue |
4 |
container_start_page |
911 |
op_container_end_page |
919 |
_version_ |
1811642104593514496 |