X‐cell gill disease obliterates the lamellar blood supply in the Antarctic teleost, Pagothenia borchgreviniki (Boulenger 1902)

• Published in: Journal of Fish Diseases
• Main Authors: Franklin, C. E., McKenzie, J. C., Davison, W., Carey, P. W.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Wiley-Blackwell Publishing 1993
• Subjects: Vascular Corrosion Casts; Microscopy; 1104 Aquatic Science; 3401 Veterinary (miscalleneous); Antarctic; The Antarctic; Antarc*
• Online Access: https://espace.library.uq.edu.au/view/UQ:383453

Vascular corrosion casting methods were used to elucidate the pathological effects of X-cell disease on the blood supply to the gills of the Antarctic teleost, Pagothenia borchgrevinki (Boulenger, 1902). Afferent and efferent branchial arteries were patent in X-cell diseased fish; however, the blood supply to the lamellae was markedly reduced or obliterated in areas in which there was a predominance of X-cells. The present authors believe that the tissue hyperplasia associated with X-cell disease results in the compression of the lamellar vascular bed which leads eventually to the occlusion of vessels.