Vigilance needed to keep NI free of ‘rock snot’

[Fish & Game NZ]
Fish & Game NZ is encouraged by sampling results which show all rivers tested in the Manawatu region are free of didymo, also known as ‘rock snot’.

In conjunction with lower North Island regional councils, Fish & Game is involved in a regional didymo monitoring campaign on behalf of Biosecurity NZ.

Sampling is carried out three times a year and the first monitoring run for 2011 shows no signs of the highly invasive algae.

Wellington Fish & Game manager Phil Teal says anglers – along with other river users – should be given credit for taking onboard the ‘Check, Clean, Dry’ message.

“Anglers in our region have a huge stake in ensuring North Island rivers remain free of this awful algae having seen the impact it’s had in the South Island,” he says.

Rock snot continues to spread in the South Island, Teal points out, so its crucial North Island anglers remain vigilant.

“Disinfecting fishing equipment that could potentially be contaminated is a relatively simple procedure that’s well worth the effort.

“Anglers and other river users should make this a habitat before moving between waterways, even though didymo hasn’t been detected in the North Island.

"Rivers belong to all New Zealanders so taking some basic precautionary measures to keep them free of aquatic pests is just part of being a responsible river user.”

Freezing solid or immersing fishing gear (including reels and flies) thoroughly in a 5% solution of dishwashing detergent or nappy cleaner for 30 minutes is the recommended decontamination treatment. A comprehensive list of treatments can be found on the Biosecurity NZ website: www.biosecurity.govt.nz

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