Publications

Here you will find publications from DTU Aqua:

Recent publications

2018
 

Film viser, hvordan fritidsfiskere kan undgå at miste fiskeredskaber på havet

Year: 2018

Film viser, hvordan fritidsfiskere kan undgå at miste fiskeredskaber på havet

Frandsen, R. 2018

Research output: CommunicationNet publication - Internet publication – Annual report year: 2018

Original languageDanish
Publication date2018
StatePublished - 2018

 

Sortmundet kutling på film

Year: 2018

Sortmundet kutling på film

Christoffersen, M. 2018

Research output: CommunicationNet publication - Internet publication – Annual report year: 2018

Original languageDanish
Publication date2018
StatePublished - 2018

 

Børnebøger om ål og gedde

Year: 2018

Børnebøger om ål og gedde

Berg, S. & Pedersen, M. I. 2018

Research output: CommunicationNet publication - Internet publication – Annual report year: 2018

Original languageDanish
Publication date2018
StatePublished - 2018

 

A Climate-driven functional inversion of connected marine ecosystems

Year: 2018

A Climate-driven functional inversion of connected marine ecosystems

McLean, M., Mouillot, D., Lindegren, M., Engelhard, G., Villéger, S., Marchal, P., Brind'Amour, A. & Auber, A. 2018 (Accepted/In press) In : Current Biology.

Research output: Research - peer-reviewJournal article – Annual report year: 2018

Sustainably managing natural resources under climate change requires understanding how species distribution shifts can impact ecosystem structure and functioning. While numerous studies have documented changes in species' distributions and abundances in response to warming [1, 2], the consequences for the functional structure of ecosystems (i.e., composition of species' functional traits) have received less attention. Here, using thirty years of fish monitoring, we show that two connected North Atlantic ecosystems (E. English Channel and S. North Sea) underwent a rapid shift in functional structure triggered by a climate oscillation to a prevailing warm-phase in the late-1990s. Using time-lag-based causality analyses, we found that rapid warming drove pelagic fishes with r-selected life history traits (e.g., low age and size at maturity, small offspring, low trophic level) to shift abruptly northward from one ecosystem to the other, causing an inversion in functional structure between the two connected ecosystems. While we observed only a one-year time-lag between the climate oscillation and the functional shift, indicating rapid responses to a changing environment, historical overfishing likely rendered these ecosystems susceptible to climatic stress [3], and declining fishing in the North Sea may have exacerbated the shift. This shift likely had major consequences for ecosystem functioning due to potential changes in biomass turnover, nutrient cycling, and benthic-pelagic coupling [4-6]. Under ongoing warming, climate oscillations and extreme warming events may increase in frequency and severity [7, 8], which could trigger functional shifts with profound consequences for ecosystem functioning and services.
Original languageEnglish
JournalCurrent Biology
ISSN0960-9822
DOIs
StateAccepted/In press - 2018

 

Outbreak of viral haemorrhagic septicaemia (VHS) in lumpfish (Cyclopterus lumpus) in Iceland caused by VHS virus genotype IV

Year: 2018

Outbreak of viral haemorrhagic septicaemia (VHS) in lumpfish (Cyclopterus lumpus) in Iceland caused by VHS virus genotype IV

Guðmundsdóttir, S., Vendramin, N., Cuenca, A., Sigurðardóttir, H., Kristmundsson, A., Moesgaard Iburg, T. & Olesen, N. J. 2018 (Accepted/In press) In : Journal of Fish Diseases.

Research output: Research - peer-reviewJournal article – Annual report year: 2018

A novel viral haemorrhagic septicaemia virus (VHSV) of genotype IV was isolated from wild lumpfish (Cyclopterus lumpus), brought to a land-based farm in Iceland, to serve as broodfish. Two groups of lumpfish juveniles, kept in tanks in the same facility, got infected. The virus isolated was identified as VHSV by ELISA and real-time RT-PCR. Phylogenetic analysis, based on the glycoprotein (G) gene sequences, may indicate a novel subgroup of VHSV genotype IV. In controlled laboratory exposure studies with this new isolate, there was 3% survival in the I.P. injection challenged group while there was 90% survival in the immersion group. VHSV was not re-isolated from fish challenged by immersion. In a cohabitation trial, lumpfish infected I.P. (shedders) were placed in tanks with naïve lumpfish as well as naïve Atlantic salmon (Salmo salar L.). 10% of the lumpfish shedders and 43%-50% of the cohabiting lumpfish survived after 4 weeks. 80%-92% of the Atlantic salmon survived, but no viral RNA was detected by real-time RT-PCR nor VHSV was isolated from Atlantic salmon. This is the first isolation of a notifiable virus in Iceland and the first report of VHSV of genotype IV in European waters.
Original languageEnglish
JournalJournal of Fish Diseases
ISSN0140-7775
DOIs
StateAccepted/In press - 2018


http://www.aqua.dtu.dk/english/About/Publications
21 NOVEMBER 2018