Native and invasive taxa on the Pacific coast of South America: Impacts on aquaculture, traceability and biodiversity of blue mussels (<i>Mytilus</i> spp.)

Larraín, María Angélica; Zbawicka, Małgorzata; Araneda, Cristián; Gardner, Jonathan P. A.; Wenne, Roman

doi:10.1111/eva.12553

Cited by 61 publications

(98 citation statements)

References 78 publications

(154 reference statements)

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“…Nonetheless, we are left with the fact that in ports and in natural environments in the Bay of Brest, dock mussels have probably displaced the native lineages. Michalek, Ventura, and Sanders () report impacts of hybridisation on Mytilus aquaculture in Scotland and Larraín et al () raise concerns of economic impacts in Chile. In Scotland, a recent demographic increase in M. trossulus has produced large losses to M. edulis aquaculture due to their colonisation of culture ropes and their shell being more fragile (Beaumont, Hawkins, Doig, Davies, & Snow, ; Dias et al, ).…”

Section: Discussionmentioning

confidence: 99%

Replicated anthropogenic hybridisations reveal parallel patterns of admixture in marine mussels

Simon

Arbiol

Nielsen

et al. 2019

Evolutionary Applications

106

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Human‐mediated transport creates secondary contacts between genetically differentiated lineages, bringing new opportunities for gene exchange. When similar introductions occur in different places, they provide informally replicated experiments for studying hybridisation. We here examined 4,279 Mytilus mussels, sampled in Europe and genotyped with 77 ancestry‐informative markers. We identified a type of introduced mussels, called “dock mussels,” associated with port habitats and displaying a particular genetic signal of admixture between M. edulis and the Mediterranean lineage of M. galloprovincialis. These mussels exhibit similarities in their ancestry compositions, regardless of the local native genetic backgrounds and the distance separating colonised ports. We observed fine‐scale genetic shifts at the port entrance, at scales below natural dispersal distance. Such sharp clines do not fit with migration‐selection tension zone models, and instead suggest habitat choice and early‐stage adaptation to the port environment, possibly coupled with connectivity barriers. Variations in the spread and admixture patterns of dock mussels seem to be influenced by the local native genetic backgrounds encountered. We next examined departures from the average admixture rate at different loci, and compared human‐mediated admixture events, to naturally admixed populations and experimental crosses. When the same M. galloprovincialis background was involved, positive correlations in the departures of loci across locations were found; but when different backgrounds were involved, no or negative correlations were observed. While some observed positive correlations might be best explained by a shared history and saltatory colonisation, others are likely produced by parallel selective events. Altogether, genome‐wide effect of admixture seems repeatable and more dependent on genetic background than environmental context. Our results pave the way towards further genomic analyses of admixture, and monitoring of the spread of dock mussels both at large and at fine spacial scales.

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Section: Discussionmentioning

confidence: 99%

Replicated anthropogenic hybridisations reveal parallel patterns of admixture in marine mussels

Simon

Arbiol

Nielsen

et al. 2019

Evolutionary Applications

106

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“…Although ecological and physiological studies have suggested a sympatric distribution of M. chilensis and M. edulis platensis at the southern limit of their latitudinal range (Dellatorre, Pascual, & Barón, 2007), M. edulis alleles were absent from Isla Peel (IP, 50°50′29.83″S, 74°00′41.27″W) after PAP polymorphisms (Larraín et al, ) as well as from Punta Arenas (PUCL, 53°09′16.12″S, 70°54′59.31″W) using 49 SNPs (Larraín et al, ). Also, a recent study on mitogenomes stated that both ‘morphotypes’ are conspecific regional variants and should be taxonomically termed M. platensis (Gaitán‐Espitia, Quintero‐Galvis, Mesas, & d'Elía, 2016).…”

Section: Discussionmentioning

confidence: 99%

“…The first studies of the Chilean mussel using microsatellite markers (Ouagajjou, Presa, Astorga, & Pérez, 2011) or the Cytochrome Oxidase I gene (Seguel, 2011) showed that this species is genetically different from NH Mytilus spp., and such evolutionary novelty was further corroborated by studies on the sperm structure (Oyarzún, Toro, Garrido, Briones, & Guiñez, 2014), microsatellites (e.g. Larraín, Díaz, Lamas, Uribe, & Araneda, 2014), mitochondrial DNA (Śmietanka & Burzy nski, 2017), and single nucleotide polymorphisms (SNPs; Larraín et al, 2018;Zbawicka et al, 2018). Therefore, M. chilensis is the valid nomen for this taxon that adheres to the principle of taxonomic priority since it was first described by Hupé (1854) on specimens from Concepción (Chile).…”

Section: Introductionmentioning

confidence: 87%

“…Also, Mylitus planulatus (Lamarck, 1819), described in Albany (Australia), was a candidate to be the SH M. galloprovincialis lineage (e.g. Westfall & Gardner, 2010), although recent analyses have not detected M. planulatus in the Southern Cone (Larraín, Zbawicka, Araneda, Gardner, & Wenne, 2018;Zbawicka, Trucco, & Wenne, 2018). The first studies of the Chilean mussel using microsatellite markers (Ouagajjou, Presa, Astorga, & Pérez, 2011) or the Cytochrome Oxidase I gene (Seguel, 2011) showed that this species is genetically different from NH Mytilus spp., and such evolutionary novelty was further corroborated by studies on the sperm structure (Oyarzún, Toro, Garrido, Briones, & Guiñez, 2014), microsatellites (e.g.…”

Section: Introductionmentioning

confidence: 99%

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A biogeography‐based management forMytilus chilensis: The genetic hodgepodge of Los Lagos versus the pristine hybrid zone of the Magellanic ecotone

Díaz‐Puente

Pita

Uribe

et al. 2020

Aquatic Conservation

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This study was intended to identify mussel species from the Magellanic ecotone, quantifying interspecific hybridization within Mytilus and depicting the genetic architecture of Mytilus chilensis in its South Pacific range. The analysis comprises the sub‐Antarctic Magallanes Province as a rich ecotone of climates, ecosystems and admixed faunas embedded among the biogeographic regions of the Pacific, the Atlantic, and Antarctica. Highly conserved molecular sequences within species were used to identify species, and polymorphic microsatellites were used to calculate the genetic architecture of M. chilensis. The absence of the invasive species Mytilus galloprovincialis from the M. chilensis range clarifies previous doubts on its expansion southward from the Arauco Gulf. The ubiquitous presence of the typical Glu‐5′‐Me‐15/16 PAP allele of Mytilus trossulus in the Northern Hemisphere might come from hull biofouling, but rather it seems to be an ancient polymorphism conserved in M. chilensis as occurs in blue mussels from other regions of the Southern Hemisphere. There is a very limited connectivity (FST = 0.167) between two latitudinal gene pools of M. chilensis that are highly divergent in composition, architecture, and ecological relevance. Fifty years of aquaculture enhancement in Los Lagos explains its high diversity and genetic heterogeneity among patches, so its mussel management should seek a balance between exploitation and environmental sustainability. The Magellanic ecotone bears a pristine M. chilensis × Mytilus edulis platensis hybrid zone around the Southern Cone, larger (450 km) than previously thought. Such a hybrid zone permeates one of the last remaining wilderness areas in the world (Cape Horn Biosphere Reserve) and is a natural laboratory for addressing introgression, hybridization, and evolution of Mytilus spp. genomes in their last southern frontier.

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“…America (e.g. Larraín et al, 2018). Genetic investigations to date have used either insufficient loci to resolve species relationships and migration (e.g.…”

Section: Late-pleistocene Divergence Between Native and Introduced mentioning

confidence: 99%

Twin introductions by independent invader mussel lineages are both associated with recent admixture with a native congener in Australia

Popovic

Matias

Bierne

et al. 2019

Evolutionary Applications

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Introduced species can impose profound impacts on the evolution of receiving communities with which they interact. If native and introduced taxa remain reproductively semi‐isolated, human‐mediated secondary contact may promote genetic exchange across newly created hybrid zones, potentially impacting native genetic diversity and invasive species spread. Here, we investigate the contributions of recent divergence histories and ongoing (post‐introduction) gene flow between the invasive marine mussel, Mytilus galloprovincialis, and a morphologically indistinguishable and taxonomically contentious native Australian taxon, Mytilus planulatus. Using transcriptome‐wide markers, we demonstrate that two contemporary M. galloprovincialis introductions into south‐eastern Australia originate from genetically divergent lineages from its native range in the Mediterranean Sea and Atlantic Europe, where both introductions have led to repeated instances of admixture between introduced and endemic populations. Through increased genome‐wide resolution of species relationships, combined with demographic modelling, we validate that mussels sampled in Tasmania are representative of the endemic Australian taxon (M. planulatus), but share strong genetic affinities to M. galloprovincialis. Demographic inferences indicate late‐Pleistocene divergence times and historical gene flow between the Tasmanian endemic lineage and northern M. galloprovincialis, suggesting that native and introduced taxa have experienced a period of historical isolation of at least 100,000 years. Our results demonstrate that many genomic loci and sufficient sampling of closely related lineages in both sympatric (e.g. Australian populations) and allopatric (e.g. northern hemisphere Mytilus taxa) ranges are necessary to accurately (a) interpret patterns of intraspecific differentiation and to (b) distinguish contemporary invasive introgression from signatures left by recent divergence histories in high dispersal marine species. More broadly, our study fills a significant gap in systematic knowledge of native Australian biodiversity and sheds light on the intrinsic challenges for invasive species research when native and introduced species boundaries are not well defined.

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Native and invasive taxa on the Pacific coast of South America: Impacts on aquaculture, traceability and biodiversity of blue mussels (Mytilus spp.)

Abstract: Gaining new knowledge of the native distributions of species (phylogeography)

Cited by 61 publications

References 78 publications

Replicated anthropogenic hybridisations reveal parallel patterns of admixture in marine mussels

Replicated anthropogenic hybridisations reveal parallel patterns of admixture in marine mussels

A biogeography‐based management forMytilus chilensis: The genetic hodgepodge of Los Lagos versus the pristine hybrid zone of the Magellanic ecotone

Twin introductions by independent invader mussel lineages are both associated with recent admixture with a native congener in Australia

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