Pseudobranchial X-cell pseudotumors in young wild and farmed atlantic cod gadus morhua in iceland

M. Eydal*, Á Kristmundsson, S. H. Bambir

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

This study investigated the prevalence of pseudobranchial X-cell pseudotumors in 2 year classes of wild juvenile cod and to a lesser extent in older cod in NW Iceland. The disease was also monitored in farmed wild-caught juvenile cod. The youngest wild cod detected that had X-cell infections were 6.5 to 13.0 cm in length, with prevalence reaching a maximum level of 7%. The highest prevalence (23%) was recorded in 18.5 to 27.0 cm fish. The mean prevalence in older cod (25.0 to 76.0 cm in length) was 7% but decreased with increasing age. The mean prevalence of X-cell pseudotumors in farmed juvenile cod was ≤1% during winter rearing in land-based tanks. Higher prevalence (2 to 15%) was noted in dead and moribund fish. Diseased farmed fish were usually emaciated, and mortality due to the disease was noticeable.

Original languageEnglish
Pages (from-to)83-88
Number of pages6
JournalDiseases of Aquatic Organisms
Volume91
Issue number1
DOIs
Publication statusPublished - 2010

Other keywords

  • Disease
  • Farmed cod
  • Prevalence
  • Pseudotumor
  • Wild cod
  • X-cell

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