Introduced brown algae in the North East Atlantic, with particular respect toUndaria pinnatifida (Harvey) suringar

Fletcher, R. L.; Farrell, Paul

doi:10.1007/bf02908901

Cited by 77 publications

(56 citation statements)

References 24 publications

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“…Both deliberate introduction for cultivation purposes (followed by escape of individuals outside the cultivation area) and local maritime transport have probably contributed to the spread of the Up01 haplotype from harbor to harbor (56), resulting in overall weak genetic structure in this region. Nevertheless, eight other haplotypes were detected in Europe.…”

Section: Different Patterns Of Recurrent Introductions In Europe and mentioning

confidence: 99%

Differential shuffling of native genetic diversity across introduced regions in a brown alga: Aquaculture vs. maritime traffic effects

Voisin

Engel

Viard

2005

Proc. Natl. Acad. Sci. U.S.A.

204

208

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Worldwide marine invaders, such as the brown alga Undaria pinnatifida, offer challenging models for unraveling the apparent paradox of sustainable settlement of exotic species over a large spectrum of environments. Two intergenic noncoding mitochondrial loci were found to be highly informative at the within-species level. Twenty-five haplotypes were found over the whole dataset (333 base pairs, 524 individuals, and 24 populations). The native range showed striking population genetic structure stemming from low diversity within and high differentiation among populations, a pattern not observed in the introduced range of this seaweed. Contrary to classical expectations of founding effects associated with accidental introduction of exotic species, most of the introduced populations showed high genetic diversity. At the regional scale, genetic diversity and sequence divergence showed contrasting patterns in the two main areas of introduction (Europe and Australasia), suggesting different processes of introduction in the two regions. Gene genealogy analyses point to aquaculture as a major vector of introduction and spread in Europe but implicate maritime traffic in promoting recurrent migration events from the native range to Australasia. The multiplicity of processes and genetic signatures associated with the successful invasion confirms that multiple facets of global change, e.g., aquaculture practices, alteration of habitats, and increased traffic, act in synergy at the worldwide level, facilitating successful pandemic introductions.coastal habitats ͉ gene genealogy ͉ introduced species ͉ kelp ͉ mitochondrial DNA

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Section: Different Patterns Of Recurrent Introductions In Europe and mentioning

confidence: 99%

Differential shuffling of native genetic diversity across introduced regions in a brown alga: Aquaculture vs. maritime traffic effects

Voisin

Engel

Viard

2005

Proc. Natl. Acad. Sci. U.S.A.

204

208

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“…More than 100 seaweed species have been documented that are widely dispersed across their native ranges due to anthropogenic activities (Farnham et al 1973;Rueness 1989;Curiel et al 1998;Fletcher and Farrell 1999;Rueness and Rueness 2000;Boudouresque and Verlaque 2002;Smith et al 2002;Kim et al 2004). The relocation of species causes confusion in seaweed biogeography.…”

Section: Discussionmentioning

confidence: 96%

Genetic diversity of Gracilaria changii (Gracilariaceae, Rhodophyta) from west coast, Peninsular Malaysia based on mitochondrial cox1 gene analysis

2010

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Mitochondrial cytochrome c oxidase subunit I (cox1) was employed to investigate the intraspecific genetic diversity of Gracilaria changii collected from various localities distributed along the west coast of Peninsular Malaysia. Gracilaria changii is an agarophyte with potential for commercialization in Malaysia as it has high yields of good quality agar with high gel strength for the production of food grade agar and agarose. The phylogeographic aspect of G. changii has not been studied despite its abundance and potential commercialization. In this study, six mitochondrial haplotypes (C1-C6) were revealed from 62 specimens varying by 0-3 bp over 923 bp. Results indicate that haplotype C1 is the common ancestor and the most widespread haplotype due to its prevalence in Morib, Gua Tanah, Middle Banks, Batu Besar, Batu Tengah, Sungai Pulai, and Kuala Sungai Merbok. In this study, Morib was suggested as contributing the highest intrapopulation diversity with the identification of three haplotypes. The mitochondrial marker cox1 is a highly divergent mitochondrial marker and is applicable for studies on species identification and assessment of genetic diversity of G. changii.

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“…An aim of SACs is to conserve natural habitats although it is difficult to prevent the replacement of native species by non-natives. Once U. pinnatifida has settled and grown to mature sporophytes it resists most attempts at longterm removal (Fletcher & Farrell, 1999). One of the few successful eradication attempts was undertaken in the Chatham Islands (New Zealand) where a sunken ship was completely cleared of the non-native kelp through heat treatment at 708C that prevented further spread onto adjacent natural habitats (Wotton et al, 2004).…”

Section: Ecological Impactmentioning

confidence: 99%

“…In Europe U. pinnatifida has been ranked as the third most invasive seaweed, from a range of 113 species, and has been transported by boats and through aquaculture (Nyberg & Wallentinus, 2005;ICES, 2007). It was first introduced to southern France, possibly accidently together with oysters, and in 1983 deliberate cultivation of this species began on the North Atlantic coast of Brittany (Fletcher & Farrell, 1999). It is now widely distributed in the world's oceans including the northern Mediterranean, north-east Atlantic, south-west Pacific, Tasman Sea, south-west Atlantic, east Pacific and parts of the north-west Pacific where it has not occurred formerly (Trowbridge, 2006;ICES, 2007).…”

Section: Introductionmentioning

confidence: 99%

Assessing the extent of establishment of Undaria pinnatifida in Plymouth Sound Special Area of Conservation, UK

Heiser

Hall‐Spencer

Hiscock

2014

Mar. Biodivers. Rec.

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The north-west Pacific kelp, Undaria pinnatifida, was first discovered in Europe on the Mediterranean coast of France (1971) and introduced to Brittany for aquaculture (1983). In the north-east Atlantic, it occurs in Spain, France, the British Isles, Belgium and Holland. The first UK record was in the Hamble estuary (1994) and it was found off Plymouth in 2003. The UK distribution is presently restricted to the south of England and the northern Irish Sea. We assessed the distribution of U. pinnatifida and native kelps and their allies in Plymouth Sound (at 0 to +1 m relative to Chart Datum). Undaria pinnatifida was widespread along rocky shores, on other hard substrata and grew in the same areas as Saccharina latissima and Saccorhiza polyschides. Undaria pinnatifida was significantly more abundant on vertical substrata than on upward-facing hard substrata. It was almost as common as all of the other kelp species combined on vertical substrata but was outnumbered by native species on upward-facing substrata. Undaria pinnatifida has become the visually dominant macroalga in marinas and has spread to surrounding natural habitats in Plymouth Sound. The extent to which it will outcompete native kelps requires monitoring, especially in conservation areas.

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Introduced brown algae in the North East Atlantic, with particular respect toUndaria pinnatifida (Harvey) suringar

Cited by 77 publications

References 24 publications

Differential shuffling of native genetic diversity across introduced regions in a brown alga: Aquaculture vs. maritime traffic effects

Differential shuffling of native genetic diversity across introduced regions in a brown alga: Aquaculture vs. maritime traffic effects

Genetic diversity of Gracilaria changii (Gracilariaceae, Rhodophyta) from west coast, Peninsular Malaysia based on mitochondrial cox1 gene analysis

Assessing the extent of establishment of Undaria pinnatifida in Plymouth Sound Special Area of Conservation, UK

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