Spionid mudworm infestation of farmed abalone (Haliotis spp.)
journal contribution
posted on 2023-05-16, 14:00 authored by Leonard, M, Judith HandlingerJudith Handlinger, Powell, MDSevere spionid infestations of farmed abalone (Haliotis spp.) were reported from several sea-based culture facilities during 1995-1997. Shell blister coverage was estimated at 30% and mortality rates of 50% or greater of total populations were recorded. Two spionid species: Boccardia knoxi Rainer and Polydora hoplura Claparede were present in blisters. Mean B. knoxi mudworm prevalence was 36.5 (S.D.=19, n=40) per abalone in stock surviving until late 1997. The percentage of total abalone weight comprising the soft tissues was significantly reduced (P<0.01, Mann-Whitney U-test) from 71.1% (S.D.=2.1%, n=24) to 64.5% (S.D.=6.0, n=11) and 49.6% (S.D.=10.4%, n=23) at two affected farms. Follow up trials from 1998 Showed a significant inverse relationship between percentage of shell affected by blisters and both length and whole weight of abalone (df=1,47, P<0.001 for both). © 2003 Elsevier Science B.V. All rights reserved.
History
Publication title
AquacultureVolume
221Issue
1-4Pagination
85-96ISSN
0044-8486Department/School
Institute for Marine and Antarctic StudiesPublisher
Elsevier Science BVPlace of publication
Amsterdam, NetherlandsRepository Status
- Restricted
Socio-economic Objectives
Fisheries - aquaculture not elsewhere classifiedUsage metrics
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