Overfishing
means your menu might betray you
Posted
July
14
From
World
Science
staff
and
Nature
journals
When
a
fish
is
gutted,
skinned,
boned
and
battered,
how
can
a
consumer
tell
what
he
is
eating?
With
the
world's
fisheries
in
serious
trouble
due
to
overfishing,
some
fishes
are
being
sold
in
the
guise
of
others.
Peter
B.
Marko
of
the
University
of
North
Carolina
and
colleagues
write
in
this
week's
issue
of
the
research
journal
Nature
that
some
three-quarters
of
the
fish
sold
in
the
United
States
as
'red
snapper'
come
from
a
range
of
different
species.
This
staggering
statistic,
the
authors
say,
comes
from
detailed
examination
of
the
DNA
of
fishes,
something
not
available
to
the
piscivore
in
the
street.
The
genuine
article,
Lutjanus
campechanus,
constitutes
the
most
important
fishery
in
the
Gulf
of
Mexico,
but
in
1996
the
authorities
in
Mexico
and
the
United
States
declared
that
it
was
being
over-fished,
and
called
for
restrictions
to
be
put
in
place.
The
demand
for
red
snapper
continued,
however,
perhaps
fuelled
by
the
misapprehension
that
it
is
more
common
than
it
really
is.
In
such
conditions,
the
researchers
claim,
an
incentive
is
created
for
less
valuable
fish
species
to
be
passed
off
as
more
valuable
ones.
This
also
hoodwinks
fisheries
managers
into
crucially
overestimating
stock
sizes
of
the
real
red
snapper.