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Studies on triploid oysters in Australia. VII. Assessment of two methods for determining triploidy in oysters: adductor muscle diameter and nuclear size

Citation

Gardner, C and Maguire, GB and Kent, GN, Studies on triploid oysters in Australia. VII. Assessment of two methods for determining triploidy in oysters: adductor muscle diameter and nuclear size, Journal of Shellfish Research, 15, (3) pp. 609-615. ISSN 0730-8000 (1996) [Refereed Article]

Abstract

Two methods for distinguishing triploid Pacific oysters [Crassostrea gigas (Thunberg)] from diploid oysters were assessed. Adductor muscle diameter in relation to valve height was significantly (p < 0.001) greater in samples of triploid oysters than in diploid samples and was influenced by site. However, variation in this measure was too large to allow individual oysters to be distinguished as either triploid or diploid. A second method was assessed that used differences in the nuclear size of hemocytes and the intensity of staining of hemocyte nuclei to distinguish between diploids and triploids. Histological sections, prepared by standard paraffin histology, were stained for nuclear histones with Gill's hematoxylin. Integrated nuclear optical density and nuclear area were recorded with image analysis. This method was effective in distinguishing individual oysters as diploid or triploid. When histological specimens are required, this method is less expensive than other techniques used to determine triploidy.

Item Details

Item Type:Refereed Article
Research Division:Agricultural and Veterinary Sciences
Research Group:Fisheries Sciences
Research Field:Aquaculture
Objective Division:Animal Production and Animal Primary Products
Objective Group:Other Animal Production and Animal Primary Products
Objective Field:Animal Production and Animal Primary Products not elsewhere classified
Author:Gardner, C (Professor Caleb Gardner)
Author:Maguire, GB (Dr Greg Maguire)
Author:Kent, GN (Mr Greg Kent)
ID Code:7607
Year Published:1996
Web of Science® Times Cited:8
Deposited By:TAFI - Aquaculture
Deposited On:1996-08-01
Last Modified:2011-11-16
Downloads:0

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