Stricter Controls Still Leave Wild Salmon At Risk
The Green Party said today that stricter controls on a
genetically
engineered salmon experiment have failed to
provide the wild salmon
population with enough of a
safety net.
"The stricter controls imposed by the
Environmental Risk Management
Authority (ERMA) on the
research by NZ King Salmon have brought the
containment
standards up to the level required under the
Hazardous
Substances and New Organisms Act, and of course
I see that as an
improvement," said Co-Leader Jeanette
Fitzsimons.
"But there is an important point everyone is
missing - this research near
Blenheim is of no use unless
it can lead to commercial growing of salmon in
sea cages,
and salmon in sea cages escape," she said. "While there are
few
New Zealand studies about this, one overseas study
has found that a quarter
of all `wild' salmon from one
river in Norway came from salmon farms.
"I challenge King
Salmon to declare that none of its
non-genetically
engineered sea-caged salmon in the
Marlborough Sounds have escaped. It
would contradict
what we have been told by local fishermen, company
staff
and by Conservation Department officers."
In a recent study by Purdue University (Indiana, United
States) researchers
found that a 0.1 per cent intrusion
of transgenic fish into a wild stock
could bring that
population to extinction within 40 generations where
the
gene reduces the offspring's ability to survive. They
have dubbed this
decimation theory the "Trojan gene
hypothesis", on the grounds that the gene
gets into the
population looking like something good but ends up
destroying
the population.*
"Uncontrollable incidents
such as a hole being torn in the mesh or more
importantly
in respect to King Salmon's Kaituna Hatchery near Blenheim
-
flooding - could also potentially result in eggs
escaping from research
tanks into the wild. To date there
has been little monitoring of conditions
set by ERMA and
we have seen nothing to reassure us that the integrity
of
the new screens will be regularly
checked."
Nelson-based King Salmon conceded last year that
a small percentage of the
genetically engineered fish had
been spawned with large, bumpy heads at its
Blenheim
research facility.
* Published in New Scientist
December
1999.
ENDS