Population genomic structure of the gelatinous zooplankton species <i>Mnemiopsis leidyi</i> in its nonindigenous range in the North Sea

Verwimp, Christophe; Vansteenbrugge, Lies; Derycke, Sofie; Kerkhove, Thomas; Muylle, Hilde; Honnay, Olivier; Ruttink, Tom; Roldán‐Ruiz, Isabel; Hostens, Kris

doi:10.1002/ece3.5468

Cited by 10 publications

(10 citation statements)

References 95 publications

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“…Notably, within the invasive population, we observe a 30% increase in genetic diversity. This allows us to resolve earlier analyses of genetic diversity in northern European populations that have used small numbers of molecular markers (34,42). Increased genomic diversity in the invasive range is often accounted for by multiple introductions from distinct source regions leading to admixture of naturally isolated populations (18,19,43).…”

Section: Discussionmentioning

confidence: 99%

Invasion genomics uncover contrasting scenarios of genetic diversity in a widespread marine invader

Jaspers

Ehrlich

Pujolar

et al. 2021

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

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Invasion rates have increased in the past 100 y irrespective of international conventions. What characterizes a successful invasion event? And how does genetic diversity translate into invasion success? Employing a whole-genome perspective using one of the most successful marine invasive species world-wide as a model, we resolve temporal invasion dynamics during independent invasion events in Eurasia. We reveal complex regionally independent invasion histories including cases of recurrent translocations, time-limited translocations, and stepping-stone range expansions with severe bottlenecks within the same species. Irrespective of these different invasion dynamics, which lead to contrasting patterns of genetic diversity, all nonindigenous populations are similarly successful. This illustrates that genetic diversity, per se, is not necessarily the driving force behind invasion success. Other factors such as propagule pressure and repeated introductions are an important contribution to facilitate successful invasions. This calls into question the dominant paradigm of the genetic paradox of invasions, i.e., the successful establishment of nonindigenous populations with low levels of genetic diversity.

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Section: Discussionmentioning

confidence: 99%

Invasion genomics uncover contrasting scenarios of genetic diversity in a widespread marine invader

Jaspers

Ehrlich

Pujolar

et al. 2021

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

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“…Its notorious expansion in the Black Sea, the Caspian Sea and North and Baltic Seas was associated with a decrease in the fish population due to fish larvae predation, and caused huge ecological and economic impact. Moreover, this species also became an important model species for basic biological research, in particular in the fields of bioluminescence (Schnitzler et al 2012), body regeneration (Henry & Martindale 2000; Ramon-Mateu et al 2019), axis patterning (Martindale et al 2002), and population genetics (Ghabooli et al 2011; Bolte et al 2013; Verwimp et al 2020; Jaspers et al 2021).…”

Section: Introductionmentioning

confidence: 99%

The chromosome-level genome of the ctenophoreMnemiopsis leidyiA. Agassiz, 1865 reveals a unique immune gene repertoire

Koutsouveli,

Torres-Oliva,

Bayer

et al. 2024

Preprint

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Ctenophora are basal marine metazoans, the sister group of all other animals. Mnemiopsis leidyi is one of the most successful invasive species worldwide with intense ecological and evolutionary research interest. Here, we generated a chromosome-level genome assembly of M. leidyi with a focus on its immune gene repertoire. The genome was 247.97 Mb, with N50 16.84 Mb, and 84.7% completeness. Its karyotype was 13 chromosomes. In this genome and that of two other ctenophores, Bolinopsis microptera and Hormiphora californensis, we detected a high number of protein domains related to potential immune receptors. Among those, proteins containing Toll/interleukin-1(TIR2) domain, NACHT domain, Scavenger Receptor Cystein-Rich (SRCR) domain, or C-type Lectin domain (CTLD) were abundant and presented unique domain architectures in M. leidyi. M. leidyi seems to lack bona fide Toll like Receptors, but it does possess a repertoire of 15 TIR2-domain containing genes. Besides, we detected a bona fide NOD-like receptor and 38 NACHT-domain containing genes. In order to verify the function of those domain containing genes, we exposed M. leidyi to the pathogen Vibrio coralliilyticus. Among the differentially expressed genes, we identified potential immune receptors, including four TIR2-domain containing genes, all of which were upregulated in response to pathogen exposure. To conclude, many common immune receptor domains, highly conserved across metazoans, are already present in Ctenophora. These domains have large expansions and unique architectures in M. leidyi, findings consistent with the basal evolutionary position of this group, but still might have conserved functions in immunity and host-microbe interaction.

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“…Due to perceived lack of barriers, lower species diversity than the benthos, large effective population sizes, and high rates of dispersal, it is thought that many pelagic species have global population distributions (Peijnenburg and Goetze, 2013). However, results from the few prior studies of zooplankton population genetics reveal large amounts of population structure among ocean basins and even, surprisingly, on smaller scales (Peijnenburg and Goetze, 2013;Verwimp et al, 2019;Jaspers et al, 2021). It has been proposed that selection, rather than genetic drift, is the dominant driver in evolution of oceanic zooplankton species (Peijnenburg and Goetze, 2013).…”

Section: Introductionmentioning

confidence: 99%

Speciation of pelagic zooplankton: Invisible boundaries can drive isolation of oceanic ctenophores

Johnson

Winnikoff²,

Schultz³

et al. 2022

Front. Genet.

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The study of evolution and speciation in non-model systems provides us with an opportunity to expand our understanding of biodiversity in nature. Connectivity studies generally focus on species with obvious boundaries to gene flow, but in open-ocean environments, such boundaries are difficult to identify. Due to the lack of obvious boundaries, speciation and population subdivision in the pelagic environment remain largely unexplained. Comb jellies (Phylum Ctenophora) are mostly planktonic gelatinous invertebrates, many of which are considered to have freely interbreeding distributions worldwide. It is thought that the lobate ctenophore Bolinopsis infundibulum is distributed throughout cooler northern latitudes and B. vitrea warmer. Here, we examined the global population structure for species of Bolinopsis with genetic and morphological data. We found distinct evolutionary patterns within the genus, where B. infundibulum had a broad distribution from northern Pacific to Atlantic waters despite many physical barriers, while other species were geographically segregated despite few barriers. Divergent patterns of speciation within the genus suggest that oceanic currents, sea-level, and geological changes over time can act as either barriers or aids to dispersal in the pelagic environment. Further, we used population genomic data to examine evolution in the open ocean of a distinct lineage of Bolinopsis ctenophores from the North Eastern Pacific. Genetic information and morphological observations validated this as a separate species, Bolinopsis microptera, which was previously described but has recently been called B. infundibulum. We found that populations of B. microptera from California were in cytonuclear discordance, which indicates a secondary contact zone for previously isolated populations. Discordance at this scale is rare, especially in a continuous setting.

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Population genomic structure of the gelatinous zooplankton species Mnemiopsis leidyi in its nonindigenous range in the North Sea

Cited by 10 publications

References 95 publications

Invasion genomics uncover contrasting scenarios of genetic diversity in a widespread marine invader

Invasion genomics uncover contrasting scenarios of genetic diversity in a widespread marine invader

The chromosome-level genome of the ctenophoreMnemiopsis leidyiA. Agassiz, 1865 reveals a unique immune gene repertoire

Speciation of pelagic zooplankton: Invisible boundaries can drive isolation of oceanic ctenophores

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