特定外来生物被害防止法（外来生物法）Part２
こんなメールが世界中を先月から飛び回ってた、
学者に先手を打たれたってことだね。
Dear Astacologists,
I have recently found that the Ministry of Agriculture, Forestry and
Fishery of Japan (MAFF) considers three species of crayfish (Cherax
tenuimanus, C. quadricarinatus, Astacus leptodactylus) are exempt from the
list of "noxious animals" in the Plant Protection Act. This means that one
can legally import live crayfish of these species to Japan. A part of the
reason is that there seems to be no scientific evidence of their hazardous
impacts on aquatic plants. Another, but more convincing reason is that
there seems to be a force from pet/aquarium industries. I am trying to
convince that importation of live crayfish are dangerous regardless of
species because they are omnivores, ecosystem engineers and/or transmitters
of disease and parasites. Unfortunately, impacts on biodiversity is out of
the scope of the Plant Protection Act.
Ideally, importation of live animals such as crayfish should be regulated
through an act that concerns impacts on biodiversity rather than on mere
agricultural plants. Starting from June 2005, Ministry of the Environment
of Japan is going to place the Invasive Species Act that regulates live
import, aquarium trade, possession and/or breeding for the specified,
invasive alien species. This act concerns alien impacts on biodioversity,
human health and/or economic damage. However, an important aspect of this
act is that eradication will be obliged for the listed species. As far as
crayfish are concerned, only signal crayfish (Pacifastacus leniusuclus) is
going to be discussed as a candidate. Red swamp crayfish, which are
already prevalent throughout the Japanese archipelago, would not be
considered.
学者に先手を打たれたってことだね。
Dear Astacologists,
I have recently found that the Ministry of Agriculture, Forestry and
Fishery of Japan (MAFF) considers three species of crayfish (Cherax
tenuimanus, C. quadricarinatus, Astacus leptodactylus) are exempt from the
list of "noxious animals" in the Plant Protection Act. This means that one
can legally import live crayfish of these species to Japan. A part of the
reason is that there seems to be no scientific evidence of their hazardous
impacts on aquatic plants. Another, but more convincing reason is that
there seems to be a force from pet/aquarium industries. I am trying to
convince that importation of live crayfish are dangerous regardless of
species because they are omnivores, ecosystem engineers and/or transmitters
of disease and parasites. Unfortunately, impacts on biodiversity is out of
the scope of the Plant Protection Act.
Ideally, importation of live animals such as crayfish should be regulated
through an act that concerns impacts on biodiversity rather than on mere
agricultural plants. Starting from June 2005, Ministry of the Environment
of Japan is going to place the Invasive Species Act that regulates live
import, aquarium trade, possession and/or breeding for the specified,
invasive alien species. This act concerns alien impacts on biodioversity,
human health and/or economic damage. However, an important aspect of this
act is that eradication will be obliged for the listed species. As far as
crayfish are concerned, only signal crayfish (Pacifastacus leniusuclus) is
going to be discussed as a candidate. Red swamp crayfish, which are
already prevalent throughout the Japanese archipelago, would not be
considered.
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続き
We would like the Ministry of the Environment (MOE) to list the entire
crayfish (suborder) in the future to prevent new arrival of exotic
crayfish. At the moment, the Plant Protection Act by MAFF is the only law
that regulates live crayfish import into Japan. This is better than
nothing but we would not like to have the safe list because this can be
misleading. I would be grateful if you know of any relevant papers or
reports that document impacts of Cherax tenuimanus, C. quadricarinatus and
Astacus leptodactylus. Any gut content, stable isotope and/or experimental
studies from either their native or exotic ranges are fine. Thank you for
your cooperation.
Regards,
We would like the Ministry of the Environment (MOE) to list the entire
crayfish (suborder) in the future to prevent new arrival of exotic
crayfish. At the moment, the Plant Protection Act by MAFF is the only law
that regulates live crayfish import into Japan. This is better than
nothing but we would not like to have the safe list because this can be
misleading. I would be grateful if you know of any relevant papers or
reports that document impacts of Cherax tenuimanus, C. quadricarinatus and
Astacus leptodactylus. Any gut content, stable isotope and/or experimental
studies from either their native or exotic ranges are fine. Thank you for
your cooperation.
Regards,