I am broadly interested in the diversity, systematics and ecology of ctenophores and medusozoan cnidarians. My recent work focuses on integrative morphological and molecular taxonomy of these groups, including reference libraries of DNA barcodes. My research also includes descriptive studies on faunistics and spatial and temporal distributions of gelatinous zooplankton based on both physical sampling, optical methods and, more recently, eDNA, as well as experimental work on their ecological and trophic roles in the pelagic.

I am a member of ICES Working Groups on Integrated Morphological and Molecular Taxonomy (WGIMT) and Zooplankton Ecology (WGZE), SCOR working group #157 and UN Ocean Decade Action No. 102.2 MetaZooGene, and The Hydrozoan Society

BIO325 Ocean Science

BIO266 Marine Benthic Fauna

BIO232 Systematics and Evolution of Marine Invertebrates

ForBio and NorHydro course: Diversity, Systematics and Biology of Hydrozoa

ForBio and MEDUSA course: Zooplankton Communities – Taxonomy and Methods

Academic article

• Guillaume Marchessaux; Kristína Slovák Švolíková; Barbora Števove et al. (2026). When invasions go unnoticed: Public perception of the freshwater jellyfish Craspedacusta sowerbii in Europe. (external link)
• Javier Montenegro; Jessica Kolbusz; Yakufu Niyazi et al. (2025). An unexpected journey – the arctic deep-sea halicreatid trachymedusa Botrynema brucei ellinorae off Florida: a reassessment under an integrative taxonomic approach. (external link)
• Janna Peters; Aitor Albaina; Leocadio Blanco-Bercial et al. (2025). Taxonomic uncertainty in North Atlantic and Mediterranean zooplankton limits species-level monitoring accuracy. (external link)
• Aino Laila Johanna Hosia; Josefin Titelman (2011). Intraguild predation between the native North Sea jellyfish Cyanea capillata and the invasive ctenophore Mnemiopsis leidyi. (external link)
• Luis Felipe Martell Hernández; Anne Helene S. Tandberg; Aino Hosia (2018). The illusion of rarity in an epibenthic jellyfish: facts and artefacts in the distribution of Tesserogastria musculosa (Hydrozoa, Ptychogastriidae). (external link)
• Peter Schuchert; Aino Hosia; Lucas Pierre Jean Leclere (2017). Identification of the polyp stage of three leptomedusa species using DNA barcoding. (external link)
• Aino Laila Johanna Hosia; Luis Felipe Martell Hernandez; Maciej K. Mańko et al. (2024). Unexpected diversity and novel lineages in the cosmopolitan genus Nanomia (Cnidaria: Siphonophorae: Physonectae). (external link)
• Aino Hosia; Tone Falkenhaug; Emily J. Baxter et al. (2017). Abundance, distribution and diversity of gelatinous predators along the northern Mid-Atlantic Ridge: A comparison of different sampling methodologies. (external link)
• Tor Knutsen; Aino Hosia; Tone Falkenhaug et al. (2018). Coincident mass occurrence of gelatinous zooplankton in Northern Norway. (external link)
• Aino Hosia; Tone Falkenhaug (2015). Invasive ctenophore Mnemiopsis leidyi in Norway. (external link)
• Aino Laila Johanna Hosia; Ulf Båmstedt (2007). Seasonal changes in the gelatinous zooplankton community and hydromedusa abundances in Korsfjord and Fanafjord, western Norway. (external link)
• Cornelia Jaspers; Bastian Huwer; Elvire Antajan et al. (2018). Ocean current connectivity propelling the secondary spread of a marine invasive comb jelly across western Eurasia. (external link)
• Philipp Neitzel; Aino Laila Johanna Hosia; Uwe Piatkowski et al. (2021). Pelagic deep-sea fauna observed on video transects in the southern Norwegian Sea. (external link)
• Aino Hosia; Christina Augustin; Julie Dinasquet et al. (2015). Autumnal bottom-up and top-down impacts of Cyanea capillata: a mesocosm study. (external link)
• Aino Laila Johanna Hosia; Josefin Titelman; Lars Johan Hansson et al. (2011). Interactions between native and alien ctenophores: Beroe gracilis and Mnemiopsis leidyi in Gullmarsfjorden. (external link)
• Aino Laila Johanna Hosia; Ulf Båmstedt (2008). Seasonal abundance and vertical distribution of siphonophores in western Norwegian fjords. (external link)
• Ann Bucklin; Katja T. C. A. Peijnenburg; Ksenia N. Kosobokova et al. (2021). Toward a global reference database of COI barcodes for marine zooplankton.. (external link)
• Sanna Majaneva; Halldis Ringvold; Ellie Johansen et al. (2021). Hiding in plain sight - Euplokamis dunlapae (Ctenophora) in Norwegian waters. (external link)
• Aino Laila Johanna Hosia; Fransesc Pages (2007). Unexpected new species of deep-water Hydroidomedusae from Korsfjorden, Norway. (external link)
• Aino Hosia; Lena Granhag; Tarja Katajisto et al. (2012). Experimental feeding rates of gelatinous predators Aurelia aurita and Mnemiopsis leidyi at low northern Baltic Sea salinity. (external link)
• Dmitrii Pantiukhin; Joan-Josep Soto Angel; Aino Laila Johanna Hosia et al. (2024). In-situ observations of gelatinous zooplankton aggregations in inshore and offshore Arctic waters. (external link)
• Anne Gro Vea Salvanes; Natalya Gallo; Martine Røysted Solås et al. (2025). Deep Fjords Are Excellent Natural Infrastructure for Climate Impact Studies. (external link)
• Aino Laila Johanna Hosia; Lars Stemmann; Marsh Youngbluth (2008). Distribution of net-collected planktonic cnidarians along the northern Mid-Atlantic Ridge and their associations with the main water masses. (external link)
• Lars Stemmann; Aino Laila Johanna Hosia; Marsh J. Youngbluth et al. (2008). Vertical distribution (0-1000 m) of macrozooplankton, estimated using the Underwater Video Profiler, in different hydrographic regimes along the northern portion of the Mid-Atlantic Ridge. (external link)
• Marsh Youngbluth; Tom Asbjørn Sørnes; Aino Laila Johanna Hosia et al. (2008). Vertical distribution and relative abundance of gelatinous zooplankton, in situ observations near the Mid-Atlantic Ridge. (external link)
• Lars Stemmann; Marsh Youngbluth; Kevin Robert et al. (2008). Global zoogeography of fragile macrozooplankton in the upper 100-1000 m inferred from the underwater video profiler. (external link)
• Lena Granhag; Aino Hosia (2015). Feeding and starvation in the native ctenophore Bolinopsis infundibulum and the introduced Mnemiopsis leidyi in the North Sea: implications for ctenophore transport in ships’ ballast water. (external link)
• Lara Beckmann; Joan-Josep Soto Angel; Aino Laila Johanna Hosia et al. (2023). Odd family reunion: DNA barcoding reveals unexpected relationship between three hydrozoan species. (external link)
• Aino Hosia; Tone Falkenhaug; Lars Johan Naustvoll (2014). Trends in abundance and phenology of Aurelia aurita and Cyanea spp. at a Skagerrak location, 1992-2011. (external link)
• Tom Asbjørn Sørnes; Aino Laila Johanna Hosia; Ulf Båmstedt et al. (2008). Swimming and feeding in Periphylla periphylla (Scyphozoa, Coronatae). (external link)
• P Licandro; M Blackett; A Fischer et al. (2015). Biogeography of jellyfish in the North Atlantic, by traditional and genomic methods. (external link)
• Luis Felipe Martell Hernandez; Katrine Selsø; Josefin Titelman et al. (2022). Setting the baseline for the dynamics of siphonophores and hydromedusae in Oslofjorden. (external link)
• J Dinasquet; Josefin Titelman; LF Moller et al. (2012). Cascading effects of the ctenophore Mnemiopsis leidyi on the planktonic food web in a nutrient-limited estuarine system. (external link)
• Claudia Halsband; Sanna Kristiina Majaneva; Aino Hosia et al. (2017). Jellyfish summer distribution, diversity and impact on fish farms in a Nordic fjord. (external link)

Professional article

• Aino Hosia; Tone Falkenhaug (2014). De ukjente polyppene bestemmer hvor mange maneter vi får fra år til år. (external link)
• Tone Falkenhaug; Aino Hosia; Anders Jelmert (2011). Geléplankton i kystsonen – en økologisk og næringsmessig utfordring. (external link)

Popular science book chapter

• Aino Laila Johanna Hosia; Katrine Kongshavn; Endre Willassen (2025). 2010 Mareanoprosjektet. (external link)
• Aino Laila Johanna Hosia; Katrine Kongshavn; Endre Willassen (2025). 2009 Artsprosjektet bidrar til nye arter og nye biosystematikere. (external link)
• Aino Laila Johanna Hosia; Katrine Kongshavn; Endre Willassen (2025). 2008 NorBOL, DNA-strekkoding, og naturhistoriske samlinger. (external link)
• Aino Laila Johanna Hosia; Anne Helene S. Tandberg; Nicolas Straube (2025). 2023 Dypdykk med OceanX. (external link)

Research report

• Randi Brunvær Ingvaldsen; Harald Gjøsæter; Elvar H. Hallfredsson et al. (2017). Cruise report SI_ARCTIC / Arctic Ecosystem survey R/V Helmer Hanssen, 2-16 September 2016. (external link)
• Randi Brunvær Ingvaldsen; Ann Bucklin; Melissa Chierici et al. (2016). Cruise report SI_ARCTIC/Arctic Ecosystem survey R/V Helmer Hanssen, 17 August - 7 September 2015. (external link)
• Anders Gravbrøt Finstad; Hugo de Boer; May Bente Brurberg et al. (2020). Kriterier for lagring av miljø-DNA prøver og data, herunder henvisning til referansemateriale. Criteria for depositing eDNA samples and data, including vouchered specimens. (external link)

Popular science book

• Heidi Lie Andersen; Knut Olav Aslaksen; Asbjørn Engevik et al. (2017). Årbok for Universitetsmuseet i Bergen 2017: Samlinger. (external link)

Popular science article

• Randi Brunvær Ingvaldsen; Harald Gjøsæter; Tore Haug et al. (2016). Toktet er over: Interessante funn klare for analyse. (external link)

Doctoral thesis (PhD)

• Aino Laila Johanna Hosia; Christoffer Schander; Ulf Båmstedt (2007). Gelatinous zooplankton in western Norwegian fjords. Ecology, systematics and comparisons with adjacent waters. (external link)

See a complete overview of publications in NVA.

Ongoing and previous Norwegian taxonomy initiative projects:

Challenging taxa of gelatinous zooplankton (CHANGEZ)

Resolving poorly known hyperbenthic invertebrates in Norwegian marine ecosystems (HYPERS) (PI Sanna Majaneva)

Norwegian Arctic Hydrozoa (NOAH) (PI Joan J. Soto-Angel)

Metazoan parasites of non-crustacean zooplankton (ParaZoo) (PI Luis Martell)

Marine benthic hydroids (NorHydro) (PI Luis Martell)

Hydrozoan pelagic diversity in Norway (HYPNO)

Ctenophores along the Norwegian coast (GooseAlien) (PI Sanna Majaneva/NTNU)

 

Other ongoing projects:

Anthoathecate hydrozoans in Swedish waters (HYDROINS), PhD student Doris Björling/GU

JellySafe on Apolemia siphonophores

Gelatinous Lifeforms in farOese waters: Biodiversity, rEgional Connectivity, and Capacity building (GLOBECC) 

DRIFT - Systematically rethinking advection and cross-ecosystem subsidies

 

Past projects

Distribution and ecosystem impacts of the invasive ctenophore Mnemiopsis leidyi in Norwegian waters

BAZOOCA

Mar-Eco

Gelatinous zooplankton in fjords and coastal waters of Norway

 

PhD thesis

Gelatinous zooplankton in western Norwegian fjords - Ecology, systematics and comparisons with adjacent waters