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Skeletal malformations in Australian marine finfish hatcheries

Citation

Cobcroft, JM and Battaglene, SC, Skeletal malformations in Australian marine finfish hatcheries, Aquaculture, 396-399 pp. 51-58. ISSN 0044-8486 (2013) [Refereed Article]

Copyright Statement

Copyright 2013 Elsevier B.V.

DOI: doi:10.1016/j.aquaculture.2013.02.027

Abstract

The Australian finfish aquaculture industry has a target to more than treble production from 2005 to 100,000 t p.a. by 2015. Most of the current production is from sea cage culture of Salmo salar and Thunnus maccoyii but new and emerging species are predicted to have a faster increase in production and were the focus of this study. The quantity and quality of hatchery-produced fingerlings is an impediment to achieving growth in the marine finfish sector. A survey of 18 hatcheries revealed that 44% indicated skeletal malformations were a significant issue in hatchery production, and 89% reported variability in malformation rates between production batches. Samples of fish from selected hatcheries were cleared and stained for assessment of abnormal bone development. Two hatcheries that had indicated malformations were not a significant problem submitted samples with >5% severe malformations. Jaw and spinal malformations occurred in Lates calcarifer, Seriola lalandi, Epinephelus fuscoguttatus, E. coioides, and Latris lineata. To the best of our knowledge, causative factors of malformations in Australian hatcheries have only been identified for jaw malformation in Lates calcarifer and Latris lineata, and further research is either needed or underway with other species and malformation types in order to improve culture protocols and increase fingerling quality. Improved monitoring techniques for skeletal malformations would substantially enhance the comparison of production methods at a commercial scale and enhance research efforts.

Item Details

Item Type:Refereed Article
Keywords:Marine fish larvae, Deformities, Lates calcarifer,Seriola lalandi Epinephelus Latris lineata
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 Fin Fish (excl. Tuna)
Author:Cobcroft, JM (Dr Jennifer Cobcroft)
Author:Battaglene, SC (Associate Professor Stephen Battaglene)
ID Code:84149
Year Published:2013
Deposited By:Sustainable Marine Research Collaboration
Deposited On:2013-04-22
Last Modified:2017-11-03
Downloads:0

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