FAR 2015/ 73 A survey of the Foveaux Strait oyster (Ostrea chilensis) population (OYU 5) in commercial fishery areas and the status of bonamia (Bonamia exitiosa) in February 2015.

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FAR-2015-73-Foveaux-Strait-oyster-Feb-2015.pdf

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FAR-2015-73-Foveaux-Strait-oyster-Feb-2015.pdf (2.0 MB)

Abstract
The February 2015 Foveaux Strait survey was the second in a new time-series of bonamia and oyster surveys incorporating a fully randomised, two-phase design, and the same survey area and strata. Recruit-sized oysters declined by 35% and pre-recruits by 40% since 2014, and numbers of small oysters remained low. The summer mortality from bonamia was 13.1%, down from 18.3% in 2014. Heightened bonamia mortality and continued low recruitment is expected to result in a downward trend in the population.

Document date
Wednesday, 25 November 2015

Document type
V 1.3

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Adobe PDF

File size
2.0 MB

Reference number
2015/73

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FAR-2015-73-Foveaux-Strait-oyster-Feb-2015.pdf

Uploaded date
Wednesday, 25 November 2015

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FAR: 2015/73;
ISSN: 1179-5352;
ISBN: 978-1-77665-107-8;
ScienceStock: Shellfish;
Species: bonamia; Ostrea chilensis; Oyster;
ResearchField: Bonamia; Bonamia exitosa; Foveaux Strait; oyster; randomised two-phase design;
Author: Forman; Hulston; Michael;

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