The biodiverse Neotropical ecoregion remains insufficiently assessed, poorly managed, and threatened by unregulated human activities. Novel, rapid and cost-effective DNA-based approaches are valuable to improve understanding of the biological communities and for biomonitoring in remote areas. Here, we evaluate the potential of environmental DNA (eDNA) metabarcoding for assessing the structure and ...

Square mesh panels (SMPs) are selective devices used extensively to supplement codend size selectivity in trawl fisheries. Therefore, predictions of the effect of mesh size in both SMPs and codends on size selectivity are valuable. Here, we established a framework to predict the size selection of blue whiting through different SMPs and diamond mesh codends based on the morphological characteristics ...

Gillnets made of the biodegradable resin polybutylene succinate co-adipate-co-terephthalate were tested under commercial fishing conditions to compare their fishing performance with that of conventional nylon polyamide (PA) gillnets. Both types of gillnets were made of 0.55 mm Ø monofilaments. However, since the biodegradable nets are weaker than nylon PA nets when using the same monofilament diameter, ...

Pa tross av at det har vrert jobbet mye med utvikling av teine i Norge har dette redsk.apet ik.ke oppnadd tilstrekkelige fangstrater tit a fa innpass i kommerSielt fiskeri, selv om prinsippet med teinedrift er 0nsket av fiskelinii?linga. Malsetningen med dette prosjek.tet var a vurdere om det finnes teinefiskerier andre steder i verden med en teknologi som vii Vii?re mulig a overf0re til norske ...

SINTEF Fiskeri og havbruk har sammen med Bioforsk Nord og Nofuna Marked gjennomført en vurdering av mulighetene for økt vekst innen innlandsoppdrett i Norge. Følgende arter er vurdert: Røye, ørret, sik, regnbueørret, gjørs, abbor og lake. Studien gir en oversikt over innlandsoppdrett i Norge og i andre nordiske land. Mulighetene for utvikling av en innlandsoppdrettsnæring i Norge er ellers vurdert ...

Here we report the molecular networks associated with the mucosal and systemic responses to peracetic acid (PAA), a candidate oxidative chemotherapeutic in Atlantic salmon (<i>Salmo salar</i>). Smolts were exposed to different therapeutic doses (0, 0.6 and 2.4 mg/L) of PAA for 5 min, followed by a re-exposure to the same concentrations for 30 min 2 weeks later. PAA-exposed groups have higher external ...

Damage incurred during the catch process is an indicator of the overall quality of fish and fish welfare. Because catch quality is difficult to improve once it has deteriorated, it is important to preserve quality during the catch process. Atlantic cod (<i>Gadus morhua</i>) is the most important species in the Barents Sea bottom trawl fishery. Bottom trawling is a non-benign fishing method, and it ...

The conservation status of several pelagic shark species is considered vulnerable with declining populations, yet data on shark fishing mortality remain limited for large ocean regions. Pelagic sharks are increasingly retained by mixed-species fisheries, or are discarded and not reported by selective fisheries for tunas (<i>Thunnus</i> spp.) or swordfish (<i>Xiphias gladius</i>). We estimated the ...

This study investigated the size selectivity and catch efficiency in the North-east Atlantic demersal trawl fishery targeting cod (<i>Gadus morhua</i>) and haddock (<i>Melanogrammus aeglefinus</i>). The use of a sorting grid followed by a size selective codend is compulsory in this fishery. Experimental fishing was conducted with a commercially rigged trawl, flexigrid section, and diamond-mesh codend. ...

<i>Piscine orthoreovirus-1</i> (PRV-1) can cause heart and skeletal muscle inflammation (HSMI) in farmed Atlantic salmon (<i>Salmo salar</i>), but the line of events from infection, pathologic change, and regeneration has not been thoroughly described. In this study, the cellular localization and variation of PRV-1 RNA and protein levels were analyzed at different times post-exposure in experimentally ...