Skip to main content
    • Aa
    • Aa

Presumptive Viral Erythrocytic Necrosis in the Benthopelagic Fish Coryphaenoides (Nematonurus) Armatus from the Abyss West Of Portugal

  • A.J. Davies (a1) and N.R. Merrett (a2)

Presumptive viral erythrocytic necrosis (VEN) was recorded from 1/4 of the benthopelagic fish Coryphaenoides (Nematonurus) armatus (Teleostei: Macrouridae) trawled from the abyss west of Portugal. In a blood smear made from the caudal vein of this fish, 8·6% of erythrocytes contained 1–2 intracytoplasmic inclusions which were invariably round and 1·13 ±0·43 μm in diameter. An eosinophilic granular area accompanied many inclusions. In comparison with erythrocytes from uninfected specimens of C. (N.) armatus, most of those from the infected fish were larger. Erythrocytes with suspected VEN exhibited either normal staining, or were pale, with swollen or crenated nuclei which were often displaced to the cell periphery. Erythrocyte ghosts, with and without inclusions and granules, were present in the same infected fish, suggesting osmotic damage to red cells resulting from the infection. None of 13 other C. (N.) armatus and 27 fish examined from collections made south of Maderia, representing another 20 species of benthic, benthopelagic and mid-water fish, had detectable infections.

Hide All
Eiras J.C., 1984. Virus infection of marine fish: prevalence of viral erythrocytic necrosis (VEN) in Mugil cephalus L., Blennius pholis L. and Platichthys flesus L. in coastal waters of Portugal. Bulletin of the European Association of Fish Pathologists, 4, 5256.
Eiras J.C., Costa G., Biscoito M. & Davies A.J., 1996. Suspected viral erythrocytic necrosis (VEN) in the intertidal fish Mauligobius maderensis from Madeira, Portugal. Journal of the Marine Biological Association of the United Kingdom, 76, 545548.
Eiras J.C. & Santos P.J., 1992. Presumptive viral erythrocytic necrosis (VEN) in fishes off the Portuguese coast. Bulletin of the European Association of Fish Pathologists, 12, 4547.
Khan R.A., Threlfall W. & Whitty W.S., 1992. Hematozoa of deep-sea demersal fish of the northwest Atlantic Ocean. Canadian Journal of Zoology, 70, 19261933.
Pinto R.M., Alvarez-Pellitero P., Bosch A. & Jofre J., 1989. Occurrence of a viral erythrocytic infection in the Mediterranean sea bass, Dicentrarchus labrax (L.). Journal of Fish Diseases, 12, 185191.
Smail D.A. & Munro A.L.S., 1989. The virology of teleosts. In Fish pathology, 2nd ed. (ed. R.J. Roberts), pp. 173241. London: Bailliere Tindall.
Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

Journal of the Marine Biological Association of the United Kingdom
  • ISSN: 0025-3154
  • EISSN: 1469-7769
  • URL: /core/journals/journal-of-the-marine-biological-association-of-the-united-kingdom
Please enter your name
Please enter a valid email address
Who would you like to send this to? *


Full text views

Total number of HTML views: 0
Total number of PDF views: 1 *
Loading metrics...

Abstract views

Total abstract views: 22 *
Loading metrics...

* Views captured on Cambridge Core between September 2016 - 23rd October 2017. This data will be updated every 24 hours.