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"off-target"animals.
How does the poison kill mice?
Bromadiolone blocks the production of vitamin K.
The vitamin is essential for blood clotting and the poison eventually leads to the rodents
bleeding out, according to Michael Lohr from Edith Cowan University.
"Your body has a reserve of vitamin K in it and it takes a couple of days to become
completely depleted,"Mr Lohr said.
The zoologist and adjunct professor said the delayed onset of the poison was part of the
reason it was such an effective killer.
"On first contact with the rodenticide they don't feel sick and it allows them to come back
and continue to consume more, which is why it's such an effective rodenticide."
Mr Lohr said bromadiolone had been given emergency approval in previous mouse plagues
in New South Wales but was outlawed in most countries around the world for use in
agriculture.
"There's only one instance that I'm aware of where it's used in agriculture and that's in
Indonesian palm oil plantations,"he said.
Mr Lohr said the problem with bromadiolone, compared to other poisons, was that it didn't
break down after the mouse was killed and could cause problems with anything that
consumed the dead rodents or the bait itself.
Concern for other animals
Ecology academic Dr Maggie Watson, of Charles Sturt University, has warned the $50
million package to control the mouse plague could kill a lot more than just mice.
Dr Watson said bromadiolone was a highly lethal second-generation poison that could easily
cause secondary poisoning in animals, including farm animals such as cattle and working
dogs.
"It is a very effective poison and if they eat it, then it will kill them,"she said.
"Unlike zinc phosphide, the poison builds up in the body in the fat and in the liver and that
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How does the poison kill mice?
Bromadiolone blocks the production of vitamin K.
The vitamin is essential for blood clotting and the poison eventually leads to the rodents
bleeding out, according to Michael Lohr from Edith Cowan University.
"Your body has a reserve of vitamin K in it and it takes a couple of days to become
completely depleted,"Mr Lohr said.
The zoologist and adjunct professor said the delayed onset of the poison was part of the
reason it was such an effective killer.
"On first contact with the rodenticide they don't feel sick and it allows them to come back
and continue to consume more, which is why it's such an effective rodenticide."
Mr Lohr said bromadiolone had been given emergency approval in previous mouse plagues
in New South Wales but was outlawed in most countries around the world for use in
agriculture.
"There's only one instance that I'm aware of where it's used in agriculture and that's in
Indonesian palm oil plantations,"he said.
Mr Lohr said the problem with bromadiolone, compared to other poisons, was that it didn't
break down after the mouse was killed and could cause problems with anything that
consumed the dead rodents or the bait itself.
Concern for other animals
Ecology academic Dr Maggie Watson, of Charles Sturt University, has warned the $50
million package to control the mouse plague could kill a lot more than just mice.
Dr Watson said bromadiolone was a highly lethal second-generation poison that could easily
cause secondary poisoning in animals, including farm animals such as cattle and working
dogs.
"It is a very effective poison and if they eat it, then it will kill them,"she said.
"Unlike zinc phosphide, the poison builds up in the body in the fat and in the liver and that
- 587 -
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