Abstract
AEI Aquaculture Environment Interactions Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsTheme Sections AEI 11:291-304 (2019) - DOI: https://doi.org/10.3354/aei00314 REVIEW Disease threats to farmed green-lipped mussels Perna canaliculus in New Zealand: review of challenges in risk assessment and pathway analysis A. Castinel1,4, S. C. Webb1,*, J. B. Jones2, E. J. Peeler3, B. M. Forrest1 1Cawthron Institute, Nelson 7010, New Zealand 2Murdoch University, Murdoch, Western Australia 6150, Australia 3Centre for Aquaculture Fisheries and the Environment, Weymouth DT4 8UB, UK 4Present address: PO Box 5142, Nelson 7010, New Zealand *Corresponding author: steve.webb@cawthron.org.nz ABSTRACT: The endemic green-lipped mussel (GLM) Perna canaliculus is a key cultural and economic species for New Zealand. Unlike other cultured shellfish species, GLMs have experienced relatively few disease issues. The apparent absence of diseases in both wild and farmed GLM populations does not preclude risks from environmental changes or from the introduction of overseas mussel pathogens and parasites. Potential for disease exchange between the GLM and other mytilid species present in New Zealand has yet to be elucidated. After reviewing and discussing relevant scientific literature, we present an initial assessment of GLM vulnerability to disease threats and the potential risk pathways for mussel pathogens and parasites into New Zealand and highlight a number of challenges. These include knowledge gaps relevant to GLM susceptibility to exotic pathogens and parasites, risk pathways into New Zealand and biosecurity risk associated with domestic pathways. Considerations and findings could potentially apply to other farmed aquatic species with limited distribution range and/or low disease exposure. KEY WORDS: Mussel · Disease · Shellfish · Risk pathways · Risk management · Biofouling Full text in pdf format PreviousNextCite this article as: Castinel A, Webb SC, Jones JB, Peeler EJ, Forrest BM (2019) Disease threats to farmed green-lipped mussels Perna canaliculus in New Zealand: review of challenges in risk assessment and pathway analysis. Aquacult Environ Interact 11:291-304. https://doi.org/10.3354/aei00314 Export citation RSS - Facebook - Tweet - linkedIn Cited by Published in AEI Vol. 11. Online publication date: June 27, 2019 Print ISSN: 1869-215X; Online ISSN: 1869-7534 Copyright © 2019 Inter-Research.
Highlights
Aquaculture is a rapidly growing industry worldwide, with production expected to surpass the wild fishery catch by 2025 (FAO 2015)
We identify some of the broader challenges for risk assessment and management, which may apply to the aquaculture of other species with limited global distribution and/or currently limited disease exposure
The authors turned the opportunistically collected data into valuable baseline information on pathogens, parasites and conditions of the green-lipped mussel (GLM) and Mytilus galloprovincialis (Table 1a,b). The latter mussel species is not commercially farmed in New Zealand, but it is a significant component of the biofouling assemblage on GLM farms (Forrest & Atalah 2017) and has the potential to play a role in the exchange of pathogens and parasites with GLMs
Summary
Aquaculture is a rapidly growing industry worldwide, with production expected to surpass the wild fishery catch by 2025 (FAO 2015). The noticeable increase in the occurrence of aquatic diseases in recent years highlights the need to better understand the health of both aquaculture and wild populations of marine shellfish as well as the contributing factors (Harvell et al 1999, Murray & Peeler 2005, Peeler et al 2011) Opportunistic pathogens, such as Vibrio spp., have been implicated in mussel mortality events, often taking advantage of variations in water temperature or salinity weakening the hosts (Romero et al 2014). This paper reviews the vulnerability of the GLM to disease threats and provides an overview of potential risk pathways for mussel pathogens and parasites into New Zealand. We identify some of the broader challenges for risk assessment and management, which may apply to the aquaculture of other species with limited global distribution and/or currently limited disease exposure
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