Náttúrufræðingurinn

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Náttúrufræðingurinn - 2020, Side 19

Náttúrufræðingurinn - 2020, Side 19
Tímarit Hins íslenska náttúrufræðifélags 19 4. mynd. Dæmi um ásætur á yfirborði íslands- marflóarinnar Crangonyx islandicus (400× stækkun). A: Apostomatida, dvalarstig. Al- gengt hjá öllum skoðuðum einstaklingum. B: Bifdýraásæta af óþekktri tegund. Einungis þetta eina eintak fannst. C: Bifdýraásæta af óþekktri tegund. Einungis þetta eina eintak fannst. D: Bifdýraásæta af óþekktri tegund. Einungis þetta eina eintak fannst. Kvarði á myndum A, B og C = 20 µm, D = 10 µm. – Examples of epibionts on the surface of Crangonyx islandicus (400× magnification). A: Apostomatida sporocyte. Common on all inspected specimens. B. Unspecified ciliate. Only a single specimen was observed. C. Un- specified ciliate. Only a single specimen was observed. D. Unspecified ciliate. Only a single specimen was observed. Scale on figures A, B and C = 20 µm, D = 10 µm. Ljósm./Photos: Ragnhildur Guðmundsdóttir. Endurbirt með leyfi Acta Zoologica./Republished from Acta Zoologica. Colpidium striatum Urocentrum turbo Stygobromus gracilipes ciliate A Urceolaria urechi Vorticella gracialis Acineta flava Ephelota gemmipara Suctorida Apostomatida Philasterida 0.05 aLRT >= 90 70 <= aLRT < 90 aLRT <70 Synurella ambulans ciliate A Vampyrophrya pelagica Gymnodinioides sp. Hyalophysa Iwoffi Fusiforma themisticola Pseudocollinia beringensis Crangonyx islandicus ciliate A Paraclausilocola constricta Eudrilophyra complanata Cyrtolophosis mucicola Bursaria sp. Homalogastra setosa Glauconema trihymene Crangonyx islandicus ciliate B Crangonyx subterraneus ciliate A 5. mynd. Flokkunartré bifdýra byggt á DNA-röð 18S rRNA-gena, ásamt DNA-röðum sem fundust í íslandsmarfló Crangonyx islandicus og víðar. Notuð var aðferð mesta sennileika (e. maximum likelihood). Tréð var rótað með skoruþörungnum Prorocentrum panamensis (GenBank: Y16233.1). Punktar á greinamótum gefa til kynna stuðning fyrir skiptingunni sem byggist á aðferð mesta sennileika (aLRT). Lóðrétt strik vísa í ættbálka bifdýra. Feitletruð nöfn vísa í raðir sem fengust úr rannsókn Ragnhildar Guðmundsdóttur o.fl.18 Aðrar raðir fengust úr GenBank (http://blast.ncbi.nlm.nih. gov). – Phylogenetic tree for ciliates based on 18S rRNA gene, including DNA sequences from Crangonyx islandicus and elsewhere. The tree reconstruction was based on the maximum likelihood method. The tree was rooted with Prorocentrum panamensis (GenBank: Y16233.1). Num- bers on nodes of the tree indicate the support for the branch based on maximum likelihood (aLRT). Vertical bars refer to ciliate orders. Names in bold refer to sequences obtatined from Guðmundsdóttur et al.18 Other sequences were obtained from GenBank (http://blast.ncbi.nlm.nih.gov).
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