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Cornils, Astrid; Wend-Heckmann, Britta; Held, Christoph (2017): Sampling information, length measurements, DNA alignments, models and phylogenetics trees for Oithona similis s.l. PANGAEA,, Supplement to: Cornils, A et al. (2017): Global phylogeography of Oithona similis s.l. (Crustacea, Copepoda, Oithonidae) – A cosmopolitan plankton species or a complex of cryptic lineages? Molecular Phylogenetics and Evolution, 107, 473-485,

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Traditionally, many small-sized copepod species are considered to be widespread, bipolar or cosmopolitan. However, these large-scale distribution patterns need to be re-examined in view of increasing evidence of cryptic and pseudo-cryptic speciation in pelagic copepods. Here, we present a phylogeographic study of Oithona similis s.l. populations from the Arctic Ocean, the Southern Ocean and its northern boundaries, the North Atlantic and the Mediterrranean Sea. O. similis s.l. is considered as one of the most abundant species in temperate to polar oceans and acts as an important link in the trophic network between the microbial loop and higher trophic levels such as fish larvae. Two gene fragments were analysed: the mitochondrial cytochrome oxidase c subunit I (COI), and the nuclear ribosomal 28 S genetic marker. Seven distinct, geographically delimitated, mitochondrial lineages could be identified, with divergences among the lineages ranging from 8 to 24%, thus representing most likely cryptic or pseudocryptic species within O. similis s.l. Four lineages were identified within or close to the borders of the Southern Ocean, one lineage in the Arctic Ocean and two lineages in the temperate Northern hemisphere. Surprisingly the Arctic lineage was more closely related to lineages from the Southern hemisphere than to the other lineages from the Northern hemisphere, suggesting that geographic proximity is a rather poor predictor of how closely related the clades are on a genetic level.
Further details:
Cornils, Astrid; Wend-Heckmann, Britta (2015): First report of the planktonic copepod Oithona davisae in the northern Wadden Sea (North Sea): Evidence for recent invasion? Helgoland Marine Research, 69(2), 243-248,
Median Latitude: 7.791626 * Median Longitude: -27.279814 * South-bound Latitude: -71.000000 * West-bound Longitude: -164.150000 * North-bound Latitude: 88.790000 * East-bound Longitude: 56.560000
Date/Time Start: 2002-11-01T00:00:00 * Date/Time End: 2013-09-23T00:00:00
#NameShort NameUnitPrincipal InvestigatorMethodComment
1LATITUDELatitudeCornils, AstridGeocode
2LONGITUDELongitudeCornils, AstridGeocode
3DATE/TIMEDate/TimeCornils, AstridGeocode
4Sequence identifierSeqIDCornils, Astrid
5Sample code/labelSample labelCornils, AstridSpecimen voucher
6SpeciesSpeciesCornils, Astrid
7InvestigatorInvestigatorCornils, AstridCollected by
8Area/localityAreaCornils, Astrid
9InvestigatorInvestigatorCornils, AstridIdentified by
10Cruise/expeditionExpeditionCornils, Astrid
11Station labelStationCornils, Astrid
12Depth, top/minDepth topmCornils, Astrid
13Depth, bottom/maxDepth botmCornils, Astrid
14Accession numberAccess NoCornils, Astrid28S GenBank
15Accession numberAccess NoCornils, AstridCOI GenBank
16Prosome lengthPros lmmCornils, Astrid
17Urosome lengthUros lmmCornils, Astrid
18Length, totalTLmmCornils, Astrid
3122 data points

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