Publications

Here you will find publications from DTU Aqua:

Recent publications

2017
 

Periodic bacterial control with peracetic acid in a recirculating aquaculture system and its long-term beneficial effect on fish health

Year: 2017

Periodic bacterial control with peracetic acid in a recirculating aquaculture system and its long-term beneficial effect on fish health

Liu, D., Straus, D. L., Pedersen, L-F. & Meinelt, T. 2017 In : Aquaculture. 485, p. 154-159

Publication: Research - peer-reviewJournal article – Annual report year: 2017

Fish in a recirculating aquaculture system (RAS) live with abundant microorganisms. These can become a health threat when the fish immune system cannot counterbalance the pathogenic microbial colonization. Therefore, microbial control in a RAS can potentially reduce the risk of infections and hence improve fish health. In the present study, a periodic microbial control was performed in a RAS with 16 tanks stocked with mirror carp (Cyprinus carpio) for 3months. Half of the fish culture tanks were treated with 1mgL−1 peracetic acid (PAA) twice per week, while the other half remained untreated. The water circulation was interrupted immediately before each PAA-treatment, and resumed after 3h. The total aerobic bacterial density was similar in all culture tanks, except during the PAA-treatments and the concurrent circulation interruptions. During these periods, the bacterial density decreased up to 90% in PAA-treated water, while a 6-fold bacterial increase was observed in untreated water. In the first 2months of treatment, PAA-exposed fish showed lower plasma cortisol concentration than the unexposed fish. Subsequently, the trunk kidney leukocytes of PAA-exposed fish showed stronger respiratory burst than the unexposed fish. By the end of the experiment, the PAA-exposed fish had better gill morphology, compared to the unexposed fish. The present study indicates that periodic disinfection of culture water in a RAS with PAA could transiently reduce the suspended bacteria density, modulate the fish stress response, and have an overall beneficial effect on fish health in the long term.
Original languageEnglish
JournalAquaculture
Volume485
Pages (from-to)154-159
ISSN0044-8486
DOIs
StatePublished - 2017

  PDF

Acute and semi-chronic toxicity of vanadium tested on copepods of the species Temora longicornis

Year: 2017

Acute and semi-chronic toxicity of vanadium tested on copepods of the species Temora longicornis

Kristiansen, M. H., Iversen, N. H., Koski, M. & Trapp, S. 2017 Book of Abstracts Sustain 2017. Kgs. Lyngby, Denmark: Technical University of Denmark (DTU), 1 p. Sustain Abstract A-10

Publication: Research - peer-reviewConference abstract in proceedings – Annual report year: 2017


Original languageEnglish
Title of host publicationBook of Abstracts Sustain 2017
Number of pages1
Place of PublicationKgs. Lyngby, Denmark
PublisherTechnical University of Denmark (DTU)
Publication date2017
Article numberSustain Abstract A-10
StatePublished - 2017
EventSustain 2017 - Kgs. Lyngby, Denmark

Conference

ConferenceSustain 2017
LocationTechnical University of Denmark
CountryDenmark
CityKgs. Lyngby
Period06/12/201706/12/2017

 

Skræmmeliner giver renere jomfruhummerfangst

Year: 2017

Skræmmeliner giver renere jomfruhummerfangst

Melli, V., Frandsen, R., Krag, L. A. & Feekings, J. P. 2017 24, 47, Fiskeri Tidende

Publication: CommunicationNewspaper article – Annual report year: 2017

Original languageDanish
JournalFiskeri Tidende
Volume24
Issue number47
Pages (from-to)9-10
ISSN0909-7325
StatePublished - 2017

 

Newton step methods for AD of an objective defined using implicit functions

Year: 2017

Newton step methods for AD of an objective defined using implicit functions

Bell, B. M. & Kristensen, K. 2017 In : Optimization Methods and Software. p. 1-17

Publication: Research - peer-reviewJournal article – Annual report year: 2017

Original languageEnglish
JournalOptimization Methods and Software
Pages (from-to)1-17
ISSN1055-6788
DOIs
StatePublished - 2017