Summer is coming, and with it increased biosecurity threats – especially from cruise ship tourists.

And as the season draws nearer, the Ministry for Primary Industries says it will work closely with the cruise ship industry to manage any risk, especially fruit fly.

The number of cruise ship visitors is expected to reach record levels this summer. Photo: File.

The cruise sector is expecting a record season, with passenger numbers forecast to jump 33 per cent to 267,800.

'This, coupled with the enhanced fruit fly threat across the Tasman and other parts of the Pacific, has brought MPI and the cruise industry together to improve biosecurity,” says Stephanie Rowe, MPI's Head of Intelligence and Operations.

There will be more biosecurity detector dog teams available to screen disembarking passengers for food and plants, while MPI will also introduce a portable x-ray machine at North Island ports to scan hand luggage.

'Last year we introduced detector dogs to screen passengers at the regional ports,” says Stephanie. 'There will be more dog teams available for this type of work this summer.

'If our officers intercept a lot of food or other risk materials from passengers coming ashore when a vessel first lands, we will consider greater intervention at subsequent ports.

'We've done a lot of work with the cruise ship industry to identify which vessels we want to target, based on their history, where they are coming from and who the passengers are.”

One of the areas of focus will be working with cruise ship companies to ensure vessels carry stores that don't pose biosecurity risk.

'Fruit fly host items, like apples and bananas, account for more than 75 per cent of the biosecurity risk items our officers seize from cruise ship passengers coming ashore,” she adds.

'If we know this food doesn't pose any biosecurity risk because it has been sourced from New Zealand or from a reputable supplier, we can actually reduce the amount of intervention by our quarantine officers.

'The other area is biosecurity awareness. We know, for example, that an announcement by the vessel's captain before passengers leave the ship is very effective at stopping food items coming ashore.

'We're talking with operators about what they can do and how we can help them to get our biosecurity messages across to passengers.

'The good thing is, we're getting strong support from the industry. There's an appreciation that cruise ships have a vested interest in looking after New Zealand as a tourism destination.”