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Effects of shell abrasion and aerial exposure on the performance of Pacific Oysters Crassostrea gigas (Thunberg, 1793) cultured in Tasmania, Australia.

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O'Meley, CM (1995) Effects of shell abrasion and aerial exposure on the performance of Pacific Oysters Crassostrea gigas (Thunberg, 1793) cultured in Tasmania, Australia. Research Master thesis, University of Tasmania.

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Abstract

Two of the major management strategies used by Tasmanian oyster farmers
for grow-out of unattached (single-seed) Pacific oysters (Crassostrea gigas) are
shell abrasion, occurring either deliberately or inadvertently during
mechanised grading, and manipulation of intertidal growing height (degree
of aerial exposure). Some farmers assert that these strategies can promote
faster meat growth, and hence higher condition indices [meat weight relative
either to shell cavity volume (Clvol), or to shell weight (Clshe1l). These
reports, however, are anecdotal and have not been substantiated in the
literature. The present study was undertaken to evaluate the effects of shell
abrasion and aerial exposure on the performance (growth, condition index,
shell shape, glycogen content and gonad development) of Pacific oysters
cultured in mesh baskets, in two separate experiments, on two commercial
leases in Tasmania.

Item Type: Thesis (Research Master)
Additional Information:

Copyright the Author - The University is continuing to endeavour to trace the copyright owner(s) and in the meantime this item has been reproduced here in good faith. We would be pleased to hear from the copyright owner(s).

Date Deposited: 02 Jan 2013 06:10
Last Modified: 15 Sep 2017 01:06
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