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Until recently, it had been difficult to identify planktonic larvae to species level due to lack of distinguishing features, preventing detection of expatriate species. Here, we used DNA metabarcoding of the COI gene to obtain species-level identification of early life stages of benthic invertebrates in zooplankton samples from the Barents Sea and around Svalbard, where, regionally, large volumes of warm Atlantic Water enter the Arctic from the south. We compared the larval community in the water column to the adult community on the seafloor to identify mismatches. In addition, we implemented particle tracking analysis to identify the possible areas of origin of larvae. Our results show that 30-45% of larval taxa\u2014largely polychaetes and nudibranchs\u2014were not local to the sampling area, though most were found nearby in the Barents Sea. In the particle tracking analysis, some larvae originating along the Norwegian coast were capable of reaching the northwest coast of Svalbard within 3 mo, but larvae found east of Svalbard had a more constrained possible area of origin which did not extend to the Norwegian coast. This study highlights largely regional-scale larval connectivity in the Barents Sea but demonstrates the potential for some long-lived larval taxa to travel to Svalbard and the Barents Sea from further south.<\/jats:p>","DOI":"10.3354\/meps14170","type":"journal-article","created":{"date-parts":[[2022,9,8]],"date-time":"2022-09-08T07:51:49Z","timestamp":1662623509000},"page":"1-17","update-policy":"https:\/\/doi.org\/10.3354\/policy","source":"Crossref","is-referenced-by-count":13,"title":["Origin of marine invertebrate larvae on an Arctic inflow shelf"],"prefix":"10.3354","volume":"699","author":[{"given":"R","family":"Desc\u00f4teaux","sequence":"first","affiliation":[{"name":"UiT, The Arctic University of Norway, Troms\u00f8 9037, Norway"}]},{"given":"M","family":"Huserbr\u00e5ten","sequence":"additional","affiliation":[{"name":"Institute of Marine Research, Bergen 5005, Norway"}]},{"given":"LL","family":"J\u00f8rgensen","sequence":"additional","affiliation":[{"name":"Institute of Marine Research, Bergen 5005, Norway"}]},{"given":"PE","family":"Renaud","sequence":"additional","affiliation":[{"name":"Akvaplan-niva, Fram Centre for Climate and the Environment, Troms\u00f8 9007, Norway"},{"name":"The University Centre in Svalbard, Svalbard 9170, Norway"}]},{"given":"RB","family":"Ingvaldsen","sequence":"additional","affiliation":[{"name":"Institute of Marine Research, Bergen 5005, Norway"},{"name":"UiT, The Arctic University of Norway, Troms\u00f8 9037, Norway"}]},{"given":"EA","family":"Ershova","sequence":"additional","affiliation":[{"name":"Institute of Marine Research, Bergen 5005, Norway"},{"name":"Shirshov Institute of Oceanology, Russian Academy of Sciences, Moscow 117997, Russia"}]},{"given":"BA","family":"Bluhm","sequence":"additional","affiliation":[{"name":"UiT, The Arctic University of Norway, Troms\u00f8 9037, Norway"}]}],"member":"1913","reference":[{"key":"Ref1","unstructured":"\u00c5dlandsvik B (2021) Lagrangian advection and diffusion model (LADiM). https:\/\/github.com\/bjornaa\/ladim"},{"key":"Ref2","doi-asserted-by":"publisher","DOI":"10.1016\/S0022-2836(05)80360-2"},{"key":"Ref3","doi-asserted-by":"publisher","DOI":"10.1594\/PANGAEA.877932"},{"key":"Ref4","doi-asserted-by":"publisher","DOI":"10.1111\/mec.14844"},{"key":"Ref5","doi-asserted-by":"publisher","DOI":"10.1175\/JPO-D-18-0003.1"},{"key":"Ref6","doi-asserted-by":"publisher","DOI":"10.3354\/meps303167"},{"key":"Ref7","doi-asserted-by":"publisher","DOI":"10.14430\/arctic4455"},{"key":"Ref8","unstructured":"Blacker RW (1965) Recent changes in the benthos of the West Spitsbergen fishing grounds. 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