• Diversity and systematics of philinid snails (Gastropoda: Cephalaspidea) in West Africa with remarks on the biogeography of the region 

      Malaquias, Manuel Antonio E.; Ohnheiser, Lena Tina; Oskars, Trond Roger; Willassen, Endre (Peer reviewed; Journal article, 2016)
      West Africa is often considered one of the least studied regions of the world concerning marine biodiversity. Knowledge about the philinid snails of the region has largely been based on shells, but shells can be insufficient ...
    • DNA barcode reference libraries for the monitoring of aquatic biota in Europe : Gap-analysis and recommendations for future work 

      Weigand, Hannah; Beermann, Arne J.; Čiampor, Fedor; Costa, Filipe O.; Csabai, Zoltán; Duarte, Sofia; Geiger, Matthias F.; Grabowski, Michał; Rimet, Frédéric; Rulik, Björn; Strand, Malin; Szucsich, Nicholaus; Weigand, Alexander M.; Willassen, Endre; Wyler, Sofia A.; Bouchez, Agnès; Borja, Ángel; Čiamporová-Zaťovičová, Zuzana; Ferreira, Sónia; Dijkstra, Klaas-Douwe B.; Eisendle, Ursula; Freyhof, Jörg; Gadawski, Piotr; Graf, Wolfram; Haegerbaeumer, Arne; van der Hoorn, Berry B.; Japoshvili, Bella; Keresztes, Lujza; Keskin, Emre; Leese, Florian; Macher, Jan N.; Mamos, Tomasz; Paz, Guy; Pešić, Vladimir; Pfannkuchen, Daniela Maric; Pfannkuchen, Martin Andreas; Price, Benjamin W.; Rinkevich, Buki; Teixeira, Marcos A.L.; Várbíró, Gábor; Ekrem, Torbjørn (Peer reviewed; Journal article, 2019-08-15)
      Effective identification of species using short DNA fragments (DNA barcoding and DNA metabarcoding) requires reliable sequence reference libraries of known taxa. Both taxonomically comprehensive coverage and content quality ...
    • Mitogenomic sequences and evidence from unique gene rearrangements corroborate evolutionary relationships of myctophiformes (Neoteleostei) 

      Poulsen, Jan Yde; Byrkjedal, Ingvar; Willassen, Endre; Rees, David John; Takeshima, Hirohiko; Satoh, Takashi P.; Shinohara, Gento; Nishida, Mutsumi; Miya, Masaki (Peer reviewed; Journal article, 2013-06-03)
      Background: A skewed assemblage of two epi-, meso- and bathypelagic fish families makes up the order Myctophiformes – the blackchins Neoscopelidae and the lanternfishes Myctophidae. The six rare neoscopelids show few ...
    • New observations of the enigmatic West African Cellana limpet (Mollusca: Gastropoda: Nacellidae) 

      Willassen, Endre; Williams, Akanbi Bamikole; Oskars, Trond Roger (Peer reviewed; Journal article, 2016-07-25)
      Background: Identification of limpets is often hampered by highly variable within-species shell morphologies and colour patterns. Since pre-Linnean times this has produced complex taxonomies with confusing nomenclatorial ...
    • Phylogeny and Cryptic Diversity of Diopatra (Onuphidae, Annelida) in the East Atlantic 

      Hektoen, Martin Mejdell; Willassen, Endre; Budaeva, Nataliya (Journal article; Peer reviewed, 2022)
      Diopatra Audouin & Milne-Edwards, 1833 is a species rich genus that is common in tropical and subtropical regions. The genus is readily identified by its striking, spiral branchiae, but species identification has historically ...
    • Rhachotropis (Eusiroidea, Amphipoda) from the North East Atlantic 

      Lörz, Anne-Nina; Tandberg, Anne Helene S.; Willassen, Endre; Driskell, Amy C (Peer reviewed; Journal article, 2018)
      The genus Rhachotropis has the widest geographic and bathymetric distribution of all amphipod genera worldwide. Molecular and morphological investigations of specimens sampled around Iceland and off the Norwegian coast ...
    • Scanning electron microscopy observations of Loa loa (Nematoda) 

      Juul, Jens Anibal; Forsaa, Vegard Asgeir; Utheim, Tor Paaske; Willassen, Endre (Journal article; Peer reviewed, 2020)
      We present a case report of periocular Loa loa. The key feature of L. loa distinguishing it from other human filarial parasites are cuticular bosses, which are presented in images from a light microscope and a scanning ...
    • When molecules support morphology: Phylogenetic reconstruction of the family Onuphidae (Eunicida, Annelida) based on 16S rDNA and 18S rDNA 

      Budaeva, Nataliya; Schepetov, Dmitry; Zanol, Joana; Neretina, Tatiana; Willassen, Endre (Peer reviewed; Journal article, 2016-01)
      Onuphid polychaetes are tubicolous marine worms commonly reported worldwide from intertidal areas to hadal depths. They often dominate in benthic communities and have economic importance in aquaculture and recreational ...