The outbreak of white spot disease, caused by white spot syndrome virus (WSSV) (Whispovirus sp.), in South-East Queensland (Qld) in 2016–17, the recognition of new and emerging diseases, and advances in scientific knowledge since the release of the Generic import risk analysis report for prawns and prawn products 2009 (the Prawn IRA; Biosecurity Australia 2009) highlighted the need to review the biosecurity risks of prawns imported into Australia (the prawn review).
The Prawn IRA 2009 considered that the regular introduction of imported prawns, intended for human consumption, into the aquatic environment, through use as bait or berley presented a significant pathway for exposure of Australian crustaceans to imported prawns potentially infected with hazards. Surveys conducted in 2002 and 2007 investigating the use of prawns, intended for human consumption, as bait or berley provided significant data inputs for the Prawn IRA 2009. There had not been national surveys conducted since that time. Therefore, it was identified that the prawn review needed current data on the use of prawns as bait or berley to ensure the conclusions were based on current information. Questions to characterise the extent of the use of prawns purchased from seafood retailers as bait and berley by recreational fishers in Australia were nested within the 2019-20 National Recreational Social and Economic Survey of Recreational Fishers (Moore et al. 2023).
Results from this survey indicate that prawns were the most popular bait used by recreational fishers over the survey period, followed by various kinds of saltwater fish and cephalopods (octopus/squid/cuttlefish). While prawns were the most popular bait type nationally, there were differences at the jurisdictional level, with recreational fishers in Western Australian, Tasmania and the Northern Territory most commonly using cephalopods, while South Australian fishers most commonly used ‘other shellfish’.
Of the respondents who reported using prawns as bait and/or berley, 85% indicated that they had bought prawns from a bait supplier, while 20% indicated that they had bought prawns from a seafood retailer (some respondents reported purchasing prawns from both sources). Uncooked whole prawns were the most common prawn type purchased from a seafood retailer, with most respondents indicating that they had purchased a total of less than 1 kg over the previous 12 months. Most fishers reported using Australian origin prawns, but some reported using imported prawns or that they were unsure of the origin of the prawns they were using as bait.
To test whether recreational fishers are aware of the risks of using imported prawns intended for human consumption as bait, the survey also asked recreational fishers if they had seen advice regarding the use of imported seafood prawns as bait and berley. Almost half of all respondents said that they had seen advice regarding the use of imported seafood prawns as bait and berley, with the highest levels of awareness in Queensland and the lowest in Victoria.