Points Against Brodifacoum Use at Shakespear Park, New Zealand

Brodifacoum Poisoning in New Zealand.

Many opposing submissions were made to the Auckland Council Hearing on the use of Brodifacoum,  13 and 14 December, 2010.  Here are some of them:

Paul Cohen objected to the aerial discharge of Brodifacoum bait to land, the coastal marine and water associated with the creation of Shakespear open Sanctuary.  His submission was based on the following:

1. Brodifacoum is highly toxic and is known to have entered the food chain.

2.  Brodifacoum should not be dropped near people’s homes and work places.

3.  The long term effects on the marine eco-system and food chain are unknown.

4.  400 people live or work in the drop zone, yet the ARC have provided little data on human risk.

5.  Shakespear Park is easily accessible, therefore ground bait stations should be used.

6.  Low levels Brodifacoum are potentially dangerous for pregnant women, children, and some adults.

7.  The WHO clearly state that Brodifacoum should only be used in bait stations.

8.  The data provided by the ARC as to the cause of the massive marine deaths following the Rangitoto drop, is insufficient.

9. There is insufficient data on the success rate of eliminating rodents using aerially applied Brodifacoum – even after numerous repeated drops.

10.  A similar operation on MacQuarie Island has just been halted due to totally unforeseen effects on rare native bird life.  This needs to be seriously taken into consideration.

13.  Very little is known about how marine mammals and birds or fish metabolize Brodifacoum.  The WHO clearly states that Brodifacoum is highly toxic to marine life.

14.  The amount to be dropped – 30 tonnes, is totally excessive.  This is over 3 separate drops, 10 tonnes each time.

15.  Fish deaths and marine mammal deaths have been linked to aerially applied anticoagulants in Hawaii.

16.  There is no scientific data that promotes the use of the aeiral application of Brodifacoum.

17.  DoC have historically chosen not to use Brodifacoum on the mainland because of its longevity in the environment.  It has a half life of 157 days, which means its effects in the environment can last for over 2 years.

Pet Food Processing plants are not allowed to harvest rabbits from farms that have Brodifacoum spread for Possum control for three years.

18.  All rodenticides – which includes Brodifacoum – are highly toxic and represent a considerable danger to humans – especially children – and non-target animals, including pets, livestock, and wildlife.

19.  Brodiferacoum is indiscriminate and will kill everything that consumes it, including the endangered mammals and birds.

20.  According to the WHO, all dead carcasses should be burned or buried.  I believe that historically, insufficient care has been taken post Brodifacoum drops.

21.  The long term ramifications of Brodifacoum are unknown, therefore the “Precaution Principle” should be adhered to.


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