Hemocytological and physiological analyses of juvenile (0+) semi-intensively-cultured, wildstock, and farmed marron, Cherax tenuimanus

Winzer, A. (2005) Hemocytological and physiological analyses of juvenile (0+) semi-intensively-cultured, wildstock, and farmed marron, Cherax tenuimanus. Journal of Applied Aquaculture, 17 (1). pp. 1-18.

Abstract

Total and differential hemocyte counts in cultured juvenile marron, Cherax tenuimanus, were assessed and associated with differing conditions. Semi-intensively cultured marron grown on various dietary regimes: starved, fed, and well-fed, were sampled according to a serial hemolymph sampling and dissection schedule. Significant differences (P < 0.05) in percentages of granulocytes in starved and well-fed marron hemolymph were observed from day two of the trial indicating the high sensitivity of this index with respect to condition. A significant difference (P < 0.05) in mean total hemocyte counts (THC), between the starved and well-fed group was observed at day seven of the trial. A significant difference (P < 0.05) in mean hepatopancreas moisture content between starved and fed treatment groups was seen at week two, four and six of the trial. Significant differences (P < 0.05) in THC, hepatopancreas moisture (HM%), and wet hepatosomatic indices (HIwet) were established between seim-intensively cultured, farmed, and wildstock marron. Incorporating these sensitive hemocytological and physiological indices when interpreting condition will provide a more accurate indicator of freshwater crayfish condition.

Publication Type:	Journal Article
Murdoch Affiliation:	Centre for Fish and Fisheries Research
Publisher:	Haworth Press Inc
Copyright:	© 2005 by The Haworth Press
URI:	http://researchrepository.murdoch.edu.au/id/eprint/15968

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