Cristin-resultat-ID: 842686
Sist endret: 31. mai 2017, 08:10
Resultat
Poster
2011

Influence of continuous light treatment on expression of health and stress biomarkers in Atlantic cod

Bidragsytere:
  • Alessia Giannetto
  • Salvatore Fasulo
  • Angela Mauceri
  • Maria Maisano
  • Elena Domenico og
  • Jorge Fernandes

Presentasjon

Navn på arrangementet: Genomics in Aquaculture 2011
Sted: Crete
Dato fra: 14. september 2011
Dato til: 17. september 2011

Om resultatet

Poster
Publiseringsår: 2011

Beskrivelse Beskrivelse

Tittel

Influence of continuous light treatment on expression of health and stress biomarkers in Atlantic cod

Sammendrag

Atlantic cod is one of the most economically important marine finfish species to be farmed in Europe and widely consumed in Italy. Precocious sexual maturation has a negative impact on somatic growth. Indeed, under normal breeding conditions, after precocious maturing and spawning, the fish need an additional 3 or 4 months to reach a harvestable size. This significant increase in production time results in major economic losses for the cod farming industry. It is now well known that continuous light treatment can be used to delay sexual maturation. In spite of the wide use of this technique in aquaculture, to date there are no reported studies on the health of fish exposed to these unnatural light conditions . It is therefore intuitive to ask if these rearing conditions have some negative effect on the health status and quality of the fish. In this study we investigated how continuous light affects cod health by using a set of stress biomarkers on two groups of juvenile Atlantic cod reared under different photoperiod conditions. One group was kept under continuous illumination, whereas the other was reared under a light regime that corresponded to natural photoperiod conditions in Bodø (Norway, 6 7°N) from January to July 2010. Immunohistochemistry and gene expression quantification by real-time PCR revealed that expression levels of enzymes that detoxify free radicals are higher in fish reared under continuous illumination. Apoptotic activity was more pronounced in these fish and efficiency of the immune system seems compromised, probably by low levels of melatonin due to the absence of darkness. Neurotransmission also seems altered in juveniles exposed to continuous light compared to natural light conditions. These data have been integrated with miRNA profiles between the two different light conditions.

Bidragsytere

Alessia Giannetto

  • Tilknyttet:
    Forfatter

Salvatore Fasulo

  • Tilknyttet:
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Angela Mauceri

  • Tilknyttet:
    Forfatter

Maria Maisano

  • Tilknyttet:
    Forfatter

elena domenico

Bidragsyterens navn vises på dette resultatet som Elena Domenico
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