First record of Ulva californica in the mainland of China: a single alien parthenogenetic population in discontinuous distribution

Wei, Xiaoran; Liu, Wenzheng; Lin, Xuyin; Liu, Qianchun; Jiang, Peng

doi:10.1007/s00343-022-1392-y

Cited by 6 publications

(2 citation statements)

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“…DNA-barcoding studies have been instrumental in detecting non-native Ulva species in many parts of the world (e.g. Heesch et al 2009;Krupnik et al 2018;Steinhagen et al 2019;Wei et al 2022), including regions such as China where their rapid spread is causing severe ecological and economic impacts (Xie et al 2020). For South Georgia, a recent horizon scanning study (Dawson et al 2022) listed five seaweed species (none of which were Ulva species) as potential invasive non-natives in South Georgia, of which two were identified as "highrisk".…”

Section: Discussionmentioning

confidence: 99%

“…DNA-barcoding studies of morphologically indistinct and phenotypically variable taxa, such as foliose green seaweeds of the cosmopolitan genus Ulva, have revealed cryptic diversity and confirmed the presence of non-native species in many parts of the world (e.g. Heesch et al 2009;Krupnik et al 2018;Wei et al 2022). In addition, the family Ulvaceae, to which this genus belongs, includes a disproportionately high number of known non-native species, and is regarded as a group with a great proclivity for invasion (Williams and Smith 2007).…”

Section: Introductionmentioning

confidence: 98%

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The first record of a non-native seaweed from South Georgia and confirmation of its establishment in the Falkland Islands: Ulva fenestrata Postels & Ruprecht

Mrowicki

Brodie

2023

Polar Biol

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Detecting non-native species can be challenging, particularly in the case of taxa such as seaweeds, which can be difficult to distinguish based on morphology and often require molecular-assisted taxonomy for reliable identification. The sub-Antarctic island of South Georgia supports unique and important marine biodiversity, including a rich seaweed flora, but despite its isolation, its inshore ecosystems are susceptible to the introduction of potentially invasive non-native species. Here, we provide the first report of a non-native seaweed in South Georgia, Ulva fenestrata Postels & Ruprecht (Ulvophyceae, Chlorophyta), and confirm its widespread presence in the Falkland Islands via molecular-assisted taxonomy. Phylogenetic analyses of tufA and rbcL-3P genetic markers enabled the identification of a specimen collected from Grytviken, South Georgia in November 2021 as U. fenestrata. In terms of tufA sequence, this sample was identical to specimens collected from four sites spanning West and East Falkland in 2013 and 2018. This study represents the second Southern Hemisphere record of U. fenestrata, which is generally regarded as a Northern Hemisphere species. Our findings provide a foundation for monitoring this potentially invasive species in South Georgia, and for determining its likely source and mode of arrival, while emphasising the importance of robust biosecurity measures.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

The first record of a non-native seaweed from South Georgia and confirmation of its establishment in the Falkland Islands: Ulva fenestrata Postels & Ruprecht

Mrowicki

Brodie

2023

Polar Biol

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The green tide in Yingkou, China in summer 2021 was caused by a subtropical alga—Ulva meridionalis (Ulvophyceae, Chlorophyta)

Zhao³

et al. 2022

J. Ocean. Limnol.

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Complete chloroplast genome of an invasive marine macroalgaUlva californica(Ulvophyceae, Chlorophyta)

Lin¹,

Liu

Wei

et al. 2022

Mitochondrial DNA Part B

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Species belonging to Ulva (Ulvophyceae, Chlorophyta) are one of the major members of invasive seaweeds. Ulva californica Wille 1899 was originally believed to be native to the Pacific coast of North America, while in recent years it has been reported as exotic species, or new record, in Europe, the Mediterranean, Asia, and Oceania. However, the paths of global dispersal of U. californica are unclear. In addition, the species boundary between U. californica and a related species is somewhat disputed. Here, we reported that the complete chloroplast genome of U. californica is 92,126 bp in size, harboring 96 genes (GenBank accession no. MZ561475). The overall base composition was A (37.9%), T (37.4%), C (12.3%), and G (12.4%), similar to those from other Ulva species. The phylogenomic analysis showed that although U. californica was genetically closer to Ulva aragoënsis (Bliding) Maggs 2018 in [Krupnik N et al., 2018], they were clearly distinguishable, supporting the recent opinion that they should be separated into different species. The chloroplast genome data of U. californica would provide plenty resources for phylogeography analysis and monitor on bioinvasion.

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First record of Ulva californica in the mainland of China: a single alien parthenogenetic population in discontinuous distribution

Cited by 6 publications

References 50 publications

The first record of a non-native seaweed from South Georgia and confirmation of its establishment in the Falkland Islands: Ulva fenestrata Postels & Ruprecht

The first record of a non-native seaweed from South Georgia and confirmation of its establishment in the Falkland Islands: Ulva fenestrata Postels & Ruprecht

The green tide in Yingkou, China in summer 2021 was caused by a subtropical alga—Ulva meridionalis (Ulvophyceae, Chlorophyta)

Complete chloroplast genome of an invasive marine macroalgaUlva californica(Ulvophyceae, Chlorophyta)

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