Publikasjoner
NIBIOs ansatte publiserer flere hundre vitenskapelige artikler og forskningsrapporter hvert år. Her finner du referanser og lenker til publikasjoner og andre forsknings- og formidlingsaktiviteter. Samlingen oppdateres løpende med både nytt og historisk materiale. For mer informasjon om NIBIOs publikasjoner, besøk NIBIOs bibliotek.
2020
Forfattere
Tatsiana Espevig Karin Normann Marina Usoltseva Kate Entwistle Jo Anne Crouch Trygve S. AamlidSammendrag
http://www.sterf.org/Media/Get/3321/artikel-myntflekk-in-vitro-norsk
Forfattere
Tatsiana Espevig Karin Normann Marina Usoltseva Kate Entwistle Jo Anne Crouch Trygve S. Aamlid Ljungstrand (oversetter) Erik Gondel (oversetter) ElisabethSammendrag
Det er ikke registrert sammendrag
Sammendrag
It is commonly known that the pretreatment of complex substrates yields higher biogas production in anaerobic digestion (AD) by improving hydrolysis. However, it is still questioned whether all solubilized fractions after pretreatment can be used for CH4 production during AD. In this study, the relationship between increased solubilization and AD efficiency in response to different pretreatment conditions of lipid-extracted microalgae waste (LEMW) was investigated. The individual pretreatment (acid and ultrasonic) and combined pretreatment were applied to assess the solubilization of LEMW. A biochemical methane potential (BMP) test was subsequently performed to determine the AD efficiency. Combined pretreatment of LEMW (60 min of irradiation + pH 1) showed the highest performance, achieving CH4 production of 1245 ± 28 mL CH4/L with increased solubilization of 50.4%. However, it was found that increased solubilization did not proportionally increase CH4 productivity. The assessment of the origin of produced CH4 through biomass fractionation supports this finding in that the soluble fraction that does not contribute to CH4 production increased at more severe pretreatment conditions.
Forfattere
Michal SposóbSammendrag
Det er ikke registrert sammendrag
Forfattere
Ruben Alexander Pettersen Claudia Junge Kjartan Østbye Tor Atle Mo Leif Asbjørn VøllestadSammendrag
Understanding how populations are structured in space and time is a central question in evolutionary biology. Parasites and their hosts are assumed to evolve together, however, detailed understanding of mechanisms leading to genetic structuring of parasites and their hosts are lacking. As a parasite depends on its host, studying the genetic structure of both parasite and host can reveal important insights into these mechanisms. Here, genetic structure of the monogenean parasite Gyrodactylus thymalli and its host the European grayling (Thymallus thymallus) was investigated in 10 tributaries draining into the large Lake Mjøsa in Norway. The population genetic structure of spawning grayling was studied using microsatellite genotyping, while G. thymalli was studied by sequencing a mitochondrial DNA gene (dehydrogenase subunit 5). Two main genetic clusters were revealed in grayling, one cluster comprising grayling from the largest spawning population, while the remaining tributaries formed the second cluster. For both taxa, some genetic differentiation was observed among tributaries, but there was no clear isolation-by-distance signature. The structuring was stronger for the host than for the parasite. These results imply that moderate to high levels of gene flow occur among the sub-populations of both taxa. The high parasite exchange among tributaries could result from a lack of strong homing behavior in grayling as well as interactions among individual fish outside of the spawning season, leading to frequent mixing of both host and parasite.
Forfattere
Tone Roksvåg AandahlSammendrag
Det er ikke registrert sammendrag
Forfattere
Tone Roksvåg AandahlSammendrag
Det er ikke registrert sammendrag
Forfattere
Tone Roksvåg AandahlSammendrag
Det er ikke registrert sammendrag
Forfattere
Tone Roksvåg AandahlSammendrag
Det er ikke registrert sammendrag
Forfattere
Tone Roksvåg AandahlSammendrag
Det er ikke registrert sammendrag