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Bilde av Hemmingsen, Willy
Photo: Willy Hemmingsen
Bilde av Hemmingsen, Willy
Árktalaš ja mariinna biologiija instituhtta willy.hemmingsen@uit.no +4777644383 91889347 You can find me here

Willy Hemmingsen

  • Larisa G. Poddubnaya, Willy Hemmingsen, Ken MacKenzie :
    Comparative analysis of the cytoarchitecture of the excretory bladder of adult Digenea (Platyhelminthes) with consideration of the presence of mineralized excretory corpuscles in marine and freshwater adult worms
    Zoologischer Anzeiger 2024 ARKIV / DOI
  • Larisa G. Poddubnaya, Willy Hemmingsen, Ken MacKenzie :
    Digestive system of the marine blood fluke, Aporocotyle simplex (Odhner, 1900) (Digenea: Aporocotylidae) with consideration of the digenean digestive morphology
    Zoologischer Anzeiger 2023 DOI
  • Larisa G. Poddubnaya, Alexander E. Zhokhov, Willy Hemmingsen, Ken MacKenzie :
    Morphological features of the testis of freshwater blood flukes of the genus Sanguinicola Plehn, 1905, with consideration of the testicular patterns in the Aporocotylidae
    Parasitology Research 2022 ARKIV / DOI
  • Larisa G. Poddubnaya, Alexander E. Zhokhov, Willy Hemmingsen, David I. Gibson :
    Ultrastructural evidence for the participation of muscle cells in the formation of extracellular matrices in aporocotylid blood flukes (Digenea)
    Zoologischer Anzeiger 2021 ARKIV / DOI
  • Willy Hemmingsen, Ken MacKenzie, Kjetil Sagerup, Mette Remen, Karin Bloch-Hansen, Albert Imsland :
    Caligus elongatus and other sea lice of the genus Caligus as parasites of farmed salmonids: A review
    Aquaculture 2020 ARKIV / DOI
  • Larisa G. Poddubnaya, Willy Hemmingsen, Magdalena Bruňanská, David I. Gibson :
    Interrelationships of vitelline and muscle cells within the vitelline follicles of the blood fluke Aporocotyle simplex (Digenea, Aporocotylidae) and morphological evidence for the modification of vitelline material for eggshell formation
    Parasitology Research 2020 DOI
  • Haakon Hansen, Anja Helene Alvestad, Ken MacKenzie, Mari Darrud, Egil Karlsbakk, Willy Hemmingsen et al.:
    Gyrodactylus triglopsi n. sp. (Monogenea: Gyrodactylidae) from the Gills of Triglops nybelini Jensen, 1944 (Teleostei: Cottidae) in the Barents Sea
    Acta Parasitologica 2020 ARKIV / DOI
  • Larisa G Poddubnaya, Willy Hemmingsen, Sergey A Poddubny, David I. Gibson :
    Unique ultrastructural characteristics of the tegument of the digenean blood fluke Aporocotyle simplex Odhner, 1900 (Digenea: Aporocotylidae), a parasite of flatfishes
    Parasitology Research 2019 DOI
  • Cecile Reed, Chaganti Kalavati, Ken MacKenzie, Catherine Collins, Willy Hemmingsen :
    Pseudalataspora vanderlingeni n. sp. (Myxosporea: Bivalvulida) from gall bladders of the Cape hakes Merluccius capensis Castelnau, and M. paradoxus Franca (Teleostei: Merlucciidae)
    Zootaxa 2018 DOI
  • Larisa G Poddubnaya, Willy Hemmingsen, Magdalena Brunanska, David I. Gibson :
    Ultrastructural characteristics of the male ducts and terminal genitalia of an endoparasitic monogenean, Calicotyle affinis Scott, 1911 (Monopisthocotylea: Monocotylidae), with the first detailed description of a copulatory stylet in a monogenean
    Parasitology Research 2018 DOI
  • Larisa G. Poddubnaya, Willy Hemmingsen, David I. Gibson :
    The first ultrastructural observations of the egg-forming complex of Calicotyle affinis, an endoparasitic monocotylid monogenean which lacks a uterus
    Parasitology Research 2018 DOI
  • Larisa G Poddubnaya, Willy Hemmingsen, David I. Gibson :
    The unique uterine structure of the basal monogenean Chimaericola leptogaster (Monogenea: Polyopisthocotylea), an ectoparasite of the relictual holocephalan fish Chimaera monstrosa
    Parasitology Research 2017 DOI
  • Larisa G. Poddubnaya, Willy Hemmingsen, Cecile Reed, David I. Gibson :
    Ultrastructural characteristics of the vitellarium of basal polyopisthocotylean monogeneans of the family Hexabothriidae, with comments on glycan vesicle development and its phylogenetic significance
    Zoologischer Anzeiger 2017 DOI
  • Larisa G Poddubnaya, Willy Hemmingsen, David I. Gibson :
    Ultrastructural observations of the attachment organs of the monogenean Rajonchocotyle emarginata (Olsson, 1876) (Polyopisthocotylea: Hexabothriidae), a gill parasite of rays
    Parasitology Research 2016 DOI
  • Ken MacKenzie, Willy Hemmingsen :
    Parasites as biological tags in marine fisheries research: European Atlantic waters
    Parasitology 2015 DOI
  • Larisa G. Poddubnaya, Willy Hemmingsen, Cecile Reed, David I. Gibson :
    Ultrastructural characteristics of the caeca of basal polyopisthocotylean monogeneans of the families Chimaericolidae and Hexabothriidae parasitic on cartilaginous fishes
    Parasitology Research 2015 DOI
  • Larisa G. Poddubnaya, Willy Hemmingsen, David I. Gibson :
    Surface ultrastructural characteristics of Dictyocotyle coeliaca Nybelin, 1941 (Monopisthocotylea: Monocotylidae), an endoparasitic monogenean of rays
    Parasitology Research 2015 DOI
  • Larisa G. Poddubnaya, Willy Hemmingsen :
    Cytoarchitecture of the vitellaria of two monogenean species, parasites of the holocephalan fish chimaera monstrosa L. With analysis of vitelline structure in the Neodermata
    Parazitologiya 2014 DOI
  • Larisa G Poddubnaya, Willy Hemmingsen, David I. Gibson :
    Clamp ultrastructure of the basal monogenean Chimaericola leptogaster (Leuckart, 1830) (Polyopisthocotylea: Chimaericolidae)
    Parasitology Research 2014 DOI
  • Willy Hemmingsen, Ken MacKenzie :
    Latitudinal variations in the occurrence of some cod parasites along the west coast of Norway
    Marine Biology Research 2013 DOI
  • K. MacKenzie, Paul Brickle, Willy Hemmingsen, M. George-Nascimento :
    Parasites of hoki, Macruronus magellanicus, in the Southwest Atlantic and Southeast Pacific Oceans, with an assessment of their potential value as biological tags
    Fisheries Research 2013 DOI
  • Larisa G Poddubnaya, Willy Hemmingsen, David I. Gibson :
    Ultrastructural characteristics of the vaginae of the basal monogenean Chimaericola leptogaster (Leuckart, 1830)
    Parasitology Research 2013 DOI
  • Carlos G Das Neves, Hanne M. Ihlebæk, Eystein Skjerve, Willy Hemmingsen, Hong Li, Morten Tryland :
    GAMMAHERPESVIRUS INFECTION IN SEMIDOMESTICATED REINDEER (RANGIFER TARANDUS TARANDUS): A CROSSSECTIONAL, SEROLOGIC STUDY IN NORTHERN NORWAY
    Journal of Wildlife Diseases 2013 DOI
  • Chaganti Kalavati, Ken MacKenzie, Catherine Collins, Willy Hemmingsen, Paul Brickle :
    Two new species of myxosporean parasites (Myxosporea: Bivalvulida) from gall bladders of Macruronus magellanicus Lonnberg, 1907 (Teleostei: Merlucciidae)
    Zootaxa 2013 DOI
  • Ewa Sobecka, Beata Szostakowska, Kenneth MacKenzie, Willy Hemmingsen, S. Prajsnar, Matthías Eydal :
    Genetic and morphological variation in Echinorhynchus gadi Zoega in Muller, 1776 (Acanthocephala: Echinorhynchidae) from Atlantic cod Gadus morhua L
    Journal of Helminthology 2012 DOI
  • Peter Andreas Heuch, Peder Andreas Jansen, Haakon Hansen, Erik Sterud, Ken MacKenzie, Pål Haugen et al.:
    Parasite faunas of farmed cod and adjacent wild cod populations in Norway: a comparison
    Aquaculture Environment Interactions 2011 ARKIV / DOI
  • Ivana Malovic, Willy Hemmingsen, Ken MacKenzie :
    Trypanosome infections of marin fish in the southern Barents Sea and the invasive red king crab Paralithodes camtschaticus
    Marine Pollution Bulletin 2010 DOI
  • K Mackenzie, C Collins, C Kalavati, Willy Hemmingsen :
    Myxidium finnmarchicum n. sp. (Myxosporea: Myxidiidae) from the gall bladder of whiting Merlangius merlangus (L.) (Pisces: Teleostei) in North Norway
    Zootaxa 2010
  • Ken MacKenzie, Willy Hemmingsen, Peder. A Jansen, E Sterud, Pål Haugen :
    Occurrence of the tuna nematode Hysterothylacium cornutum (Stossich, 1904) in farmed Atlantic cod Gadus morhua L. in North Norway
    Polar Biology 2009 DOI
  • Pål Haugen, Willy Hemmingsen, Ken MacKenzie :
    The distribution of Eustrongylides sp (Nematoda : Dioctophymatoidea) in brown trout Salmo trutta L. in the River Otra in southern Norway
    Bulletin of The European Association of Fish Pathologists 2008
  • Dag Atle Lysne, Willy Hemmingsen, Arne Skorping :
    Is reduced body growth of cod exposed to the gill parasite Lernaeocera branchialis a cost of resistance?
    Journal of Fish Biology 2006
  • D.A. Lysne, Willy Hemmingsen, A. Skorping :
    Is reduced body growth of cod exposed to the gill parasite Lernaeocera branchialis a cost of resistance?
    Journal of Fish Biology 2006
  • Malovic Ivana, Willy Hemmingsen :
    Interrelationships of crabs, leeches, fish and trypanosomes in coastal waters of northern Norway
    Polar Research 2005
  • Willy Hemmingsen, Peder. A Jansen, Ken MacKenzie :
    Crabs, leeches and trypanosomes: an unholy trinity?
    Marine Pollution Bulletin 2005
  • Willy Hemmingsen, Ken MacKenzie, C. Kalavati, M. Gaard :
    Myxosporean gall bladder parasites of gadid fishes in the North Atlantic: Their geographical distributions and an assessment of their economic importance in fisheries and mariculture
    Fisheries Research 2005
  • Arne Claus Nilssen, Willy Hemmingsen, Rolf E Haugerud :
    Umulig å utrydde reinbrems med ivermektin?
    Reindriftsnytt : Boazodoallu-Oddasat 2003
  • J.W Smith, Willy Hemmingsen :
    Atlantic cod Gadus morhua L.: Visceral organ topography and the asymetrical distribution of larval ascaridoid nematodes in the musculature
    Ophelia : International Journal of Marine Biology 2003
  • Willy Hemmingsen, K. MacKenzie :
    Potensial disease problems due to parasites in species of marine fish new to mariculture
    Journal of Parasitology 2003
  • Arne Claus Nilssen, Willy Hemmingsen, Rolf E Haugerud :
    Failure of two consecutive annual treatments with ivermectin to eradicate the reindeer parasites (Hypoderma tarandi, Cephenemyia trompe and Linguatula arctica) from an island in northern Norway
    Rangifer 2002
  • Haakon Hansen, Willy Hemmingsen, Odd Halvorsen :
    BARCODING OF OLD PARASITES - HIGH LEVEL OF VARIATION WITHIN THE GYROCOTYLIDS.
    2015
  • Peter Andreas Heuch, Erik Sterud, Peder Andreas Jansen, Haakon Hansen, Willy Hemmingsen, Pål Haugen et al.:
    Parasitter på vill og oppdrettet torsk — en sammenligning
    2011 OMTALE
  • Ken MacKenzie, Pål Haugen, Haakon Hansen, Peter Andreas Heuch, Erik Sterud, Peder Andreas Jansen et al.:
    Parasittfaunaen hos villtorsk og oppdrettstorsk
    2009
  • Willy Hemmingsen, Ken MacKenzie, Peder. A Jansen :
    2.4.2. Report on trypanosome infections of cod in the southern Barents Sea (delrapport av en samling av flere rapporter)
    2008
  • Pål Haugen, Haakon Hansen, Peter Andreas Heuch, Erik Sterud, Peder Andreas Jansen, Pål Arne Bjørn et al.:
    Gyrodactylus parasites infecting farmed and wild cod in Norway - a status report from the CODPAR project
    2008
  • Ken MacKenzie, Peter Andreas Heuch, Erik Sterud, Peder Andreas Jansen, Haakon Hansen, Pål Haugen et al.:
    Two new species of parasite and three new host records from cod in Norway
    2008
  • K. MacKenzie, Peter Andreas Heuch, Willy Hemmingsen, Peder. A Jansen, H Hansen, E Sterud et al.:
    Two new species of parasites and three new host records from cod in Norway
    2008
  • Pål Haugen, H Hansen, Peter Andreas Heuch, E Sterud, Peder. A Jansen, P.A. Bjørn et al.:
    Gyrodactylus parasites infecting farmed and wild cod in Norway - A report from COPDAR project
    2008
  • Peter Andreas Heuch, Erik Sterud, Haakon Hansen, Peder Andreas Jansen, Willy Hemmingsen, Pål Haugen et al.:
    Comparative studies of the parasite fauna of farmed and wild Atlantic cod along the Norwegian coast
    2007
  • Arne C. Nilssen, Rolf E. Haugerud, Kjetil Åsbakk, Willy Hemmingsen, Antti Oksanen :
    Ødelegger ivermektin livet på Finnmarksvidda?
    Reindriftsnytt : Boazodoallu-Oddasat 2003
  • Arne Claus Nilssen, Willy Hemmingsen, Rolf E Haugerud :
    Omöjligt att utrota renbroms med ivermektin?
    Boazodiehtu 2003

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