The invasive ctenophore Mnemiopsis leidyi in the central Baltic Sea: seasonal phenology and hydrographic influence on spatio-temporal distribution patterns

Schaber, Matthias; Haslob, Holger; Huwer, Bastian; Harjes, Anne; Hinrichsen, Hans‐Harald; Köster, Fritz; Storr-Paulsen, Marie; Schmidt, Jörn O.; Voss, R.

doi:10.1093/plankt/fbq167

Cited by 29 publications

(49 citation statements)

References 47 publications

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“…Our interpretation is consistent with data on seasonal phenology and size distribution in this area, which demonstrated that only adult animals occurred after blooms in the Western Baltic, and almost no juveniles or larvae of M. leidyi were observed, thus making the Bornholm Basin a sink region (Schaber et al 2011). Further eastward from the Bornholm Basin, no adults or larvae of M. leidyi have been observed (Jaspers et al 2013) and the reasons for this sink situation have been identified as environmental restrictions regarding reproduction and feeding, related to ambient temperatures, salinities and food availability (Jaspers et al 2011, Schaber et al 2011, Lehtiniemi et al 2012. Source-sink dynamics seem to play an important role in population persistence of M. leidyi, and have been described both in the native habitat (Narragansett Bay, Costello et al 2006) and in the invaded range (Sea of Azov, Purcell et al 2001, reviewed in Costello et al 2012.…”

Section: Discussionsupporting

confidence: 92%

“…The pairwise genetic differences between years within the region were higher than the pairwise distance to the Western Baltic, and statistically significant for one comparison (2009 × 2010). These population genetic measures support the conclusion that there was no self-sustaining population in the Central Baltic (Schaber et al 2011). Our interpretation is consistent with data on seasonal phenology and size distribution in this area, which demonstrated that only adult animals occurred after blooms in the Western Baltic, and almost no juveniles or larvae of M. leidyi were observed, thus making the Bornholm Basin a sink region (Schaber et al 2011).…”

Section: Discussionsupporting

confidence: 90%

“…These population genetic measures support the conclusion that there was no self-sustaining population in the Central Baltic (Schaber et al 2011). Our interpretation is consistent with data on seasonal phenology and size distribution in this area, which demonstrated that only adult animals occurred after blooms in the Western Baltic, and almost no juveniles or larvae of M. leidyi were observed, thus making the Bornholm Basin a sink region (Schaber et al 2011). Further eastward from the Bornholm Basin, no adults or larvae of M. leidyi have been observed (Jaspers et al 2013) and the reasons for this sink situation have been identified as environmental restrictions regarding reproduction and feeding, related to ambient temperatures, salinities and food availability (Jaspers et al 2011, Schaber et al 2011, Lehtiniemi et al 2012.…”

Section: Discussionsupporting

confidence: 78%

“…Both the northward and westward distribution limits in the North Sea are currently not well defined and subject to ongoing research, with the most recent reports from the Belgian coast (Van Ginderdeuren et al 2012). In the Baltic the eastward distribution limit has been indentified as the Bornholm Basin (Gorokhova et al 2009, Reusch et al 2010, Schaber et al 2011. Here, the ctenophore forms a sink population (Scha ber et al 2011), most likely restricted by environmenal factors: in particular, low salinity values affecting successful reproduction (Jaspers et al 2011).…”

Section: Introductionmentioning

confidence: 99%

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Population genetics of the invasive ctenophore Mnemiopsis leidyi in Europe reveal source–sink dynamics and secondary dispersal to the Mediterranean Sea

Bolte¹,

Fuentes²,

Haslob³

et al. 2013

Mar. Ecol. Prog. Ser.

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Repeated invasions of European waters by the ctenophore Mnemiopsis leidyi offer a unique opportunity to study population dynamics and dispersal in gelatinous zooplankton. Here we followed population establishment in 2 recently invaded areas, the North and Baltic Seas, and analysed changes in population structure during a 3 yr interval using 7 highly polymorphic microsatellites comprising 191 alleles. A second goal was to reconstruct routes of recent invasive range expansion into the Mediterranean Sea. During the study period (2008 to 2010), populations in the North Sea and Western Baltic Sea maintained their allelic composition with virtually unchanged levels of genetic diversity and between-population differentiation, demonstrating limited gene flow between the 2 regions and successful reproduction in both areas. In contrast, at the eastern distribution limit in the central Baltic (Bornholm Basin), the same measures fluctuated between years and genetic diversity decreased from 2008 to 2010. In concordance with prior ecological observations, this supports the view that M. leidyi in the central Baltic is a sink population. In the area of recent range expansion (Mediterranean Sea), we observed high population differentiation: pairwise differentiation (F ST ) values between sites in Spain, France and Israel were significant and between 0.04 and 0.16. Despite this differentiation, Bayesian clustering and phylogeographic analysis support the hypothesis that all Mediterranean M. leidyi result from a secondary introduction originating from the Black Sea. Our study contributes to growing evidence that multiple invasions of the same species can vary in their degree of genetic diversity and demonstrates how genetic markers can help to resolve whether gelatinous plankton species form self-sustaining populations.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionsupporting

confidence: 90%

Section: Discussionsupporting

confidence: 78%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Population genetics of the invasive ctenophore Mnemiopsis leidyi in Europe reveal source–sink dynamics and secondary dispersal to the Mediterranean Sea

Bolte¹,

Fuentes²,

Haslob³

et al. 2013

Mar. Ecol. Prog. Ser.

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“…Four months later the same area was only sporadic appearance of M. leidyi during summer. The vertical distribution of M. leidyi showed that it was mostly confined to water layers below the permanent halocline, and Schaber et al [32] suggested that food limitation plays a major role in the decline of M. leidyi in the central Baltic Sea during summer, and while they considered a self-sustaining population unlikely, they stated that M. leidyi is "most likely re-introduced" every year. Schaber et al [33] investigated the temporal and spatial overlap of M. leidyi and eggs and larvae of cod and sprat in order to assess the potential impact of the new invader on two of the most important Baltic fish stocks.…”

Section: Occurrence In the Central Baltic Seamentioning

confidence: 99%

Invasion of Danish and Adjacent Waters by the Comb Jelly Mnemiopsis leidyi—10 Years After

Riisgård¹

2017

OJMS

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The invasive ctenophore Mnemiopsis leidyi, which comes from North America's east coast, was observed in Danish waters for the first time in 2007. Since then, the new invader has every summer spread in Danish and adjacent waters (i.e. North Sea, Limfjorden, Skagerrak, Kattegat, Belt Sea, Baltic Sea). The invasive comb jelly has apparently come to stay, as it has no effective enemies.Possible harmful effects of M. leidyi which feeds voraciously on zooplankton, fish eggs and larvae, have so far not been thoroughly studied in Danish waters, although dedicated attempts have been made in Limfjorden and in the central Baltic Sea. Over the last 10 years, the Danish national environmental monitoring program did not include gelatinous zooplankton, but new initiatives have been recently taken. A brief overview of our current knowledge on the impact of M. leidyi in Danish waters is given here.

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

Verwimp

Vansteenbrugge²,

Derycke

et al. 2019

Ecology and Evolution

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Nonindigenous species pose a major threat for coastal and estuarine ecosystems.Risk management requires genetic information to establish appropriate management units and infer introduction and dispersal routes. We investigated one of the most successful marine invaders, the ctenophore Mnemiopsis leidyi, and used genotypingby-sequencing (GBS) to explore the spatial population structure in its nonindigenous range in the North Sea. We analyzed 140 specimens collected in different environments, including coastal and estuarine areas, and ports along the coast. Single nucleotide polymorphisms (SNPs) were called in approximately 40 k GBS loci. Population structure based on the neutral SNP panel was significant (F ST .02; p < .01), and a distinct genetic cluster was identified in a port along the Belgian coast (Ostend port; pairwise F ST .02-.04; p < .01). Remarkably, no population structure was detected between geographically distant regions in the North Sea (the Southern part of the North Sea vs. the Kattegat/Skagerrak region), which indicates substantial gene flow at this geographical scale and recent population expansion of nonindigenous M. leidyi. Additionally, seven specimens collected at one location in the indigenous range (Chesapeake Bay, USA) were highly differentiated from the North Sea populations (pairwise F ST .36-.39; p < .01). This study demonstrates the utility of GBS to investigate fine-scale population structure of gelatinous zooplankton species and shows high population connectivity among nonindigenous populations of this recently introduced species in the North Sea. K E Y W O R D S genotyping-by-sequencing, invasion biology, Mnemiopsis leidyi, population differentiation, population genomics, Single nucleotide polymorphisms S U PP O RTI N G I N FO R M ATI O N Additional supporting information may be found online in the Supporting Information section at the end of the article. How to cite this article: Verwimp C, Vansteenbrugge L, Derycke S, et al. Population genomic structure of the gelatinous zooplankton species Mnemiopsis leidyi in its nonindigenous range in the North Sea.

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The invasive ctenophore Mnemiopsis leidyi in the central Baltic Sea: seasonal phenology and hydrographic influence on spatio-temporal distribution patterns

Cited by 29 publications

References 47 publications

Population genetics of the invasive ctenophore Mnemiopsis leidyi in Europe reveal source–sink dynamics and secondary dispersal to the Mediterranean Sea

Population genetics of the invasive ctenophore Mnemiopsis leidyi in Europe reveal source–sink dynamics and secondary dispersal to the Mediterranean Sea

Invasion of Danish and Adjacent Waters by the Comb Jelly Mnemiopsis leidyi—10 Years After

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

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