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Distribution of Cardicola forsteri eggs in the gills of southern bluefin tuna (Thunnus maccoyii) (Castelnau, 1872)

Citation

Norte dos Santos, CD and Leef, M and Jones, J and Bott, N and Giblot-Ducray, D and Nowak, B, Distribution of Cardicola forsteri eggs in the gills of southern bluefin tuna (Thunnus maccoyii) (Castelnau, 1872), Aquaculture: An International Journal Devoted to Fundamental Aquatic Food Resources, 344-349 pp. 54-57. ISSN 0044-8486 (2012) [Refereed Article]


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Copyright Statement

Copyright 2012 Elsevier B.V.

DOI: doi:10.1016/j.aquaculture.2012.03.016

Abstract

The distribution of Cardicola forsteri eggs in the gills of southern bluefin tuna (Thunnus maccoyii) was analysed. Eggs were confirmed to be C. forsteri using laser-capture microdissection and quantitative polymerase chain reaction (qPCR) analyses. Prevalence of infection was significantly higher in the second gill arch (χ2 = 6.49, P < 0.05) than in the fourth gill arch, and significantly lower in the basal region of the second gill arch (χ2 = 6.29, d.f. = 2, P < 0.05). The intensity of infection was not significantly different between the gill arches (F = 0.03, d.f. = 1, P > 0.05). Similarly, there was no significant difference in the intensity of C. forsteri eggs between the gill arches (F = 3.43, d.f. = 2, P > 0.05), or at different depth of sectioning (F = 0.08, d.f. = 1.12, P > 0.05). Results suggest that the presence of C. forsteri eggs in the gills of tuna is more likely to be detected by sampling the second gill arch. Furthermore, targeting the middle region and increasing the sectioning depth may reduce the proportion of false negatives.

Item Details

Item Type:Refereed Article
Keywords:southern bluefin tuna, Cardicola forsteri, Sanguinicolidae, gill histpathology
Research Division:Agricultural and Veterinary Sciences
Research Group:Fisheries Sciences
Research Field:Aquaculture
Objective Division:Animal Production and Animal Primary Products
Objective Group:Fisheries - Aquaculture
Objective Field:Aquaculture Crustaceans (excl. Rock Lobster and Prawns)
Author:Norte dos Santos, CD (Miss Caterina Norte dos Santos)
Author:Leef, M (Dr Melanie Leef)
Author:Nowak, B (Professor Barbara Nowak)
ID Code:77750
Year Published:2012
Web of Science® Times Cited:2
Deposited By:NC Marine Conservation and Resource Sustainability
Deposited On:2012-05-24
Last Modified:2013-05-02
Downloads:0

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