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 1993
• Subjects: Antarctic; The Antarctic; Antarc*
• Online Access: http://dx.doi.org/10.1111/j.1365-2761.1993.tb01254.x; https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2761.1993.tb01254.x; https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2761.1993.tb01254.x

Abstract 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.