Save
Groupers
Groupers overfished in Maldives
5 June 2004
The Maldives is dependant on coral reefs
for the maintenance of their land area,
food, export earnings and foreign currency
from tourism revenues more than any other
nation except the countries of Western
Pacific. Groupers are vital in maintaining
a functioning coral reef ecosystem. What
we do know about the current status of
groupers, however, is not encouraging.
|
Groupers
overfished in Maldives |
The people of the Maldives have been estimated
to have among the highest levels of per-capita
fish consumption of any nation, at 125 kilos
per person per year. The majority of this
consumption is of tuna and other pelagic
species, while the main export fisheries
are also tuna. Some reef fish are taken
for local consumption, but the most important
reef fishery is the capture of groupers
for export. Fish exports for the live fish
markets also started with grouper fisheries
to East and Southeast Asia.
For more than past 10 years, groupers
were an important non- traditional commercial
species in the Maldives for export and
they are heavily fished.
Groupers were so common species in the
Maldives a decade ago. The natives of
these islands hardly eat them. Some fishermen
who were trying to get reef fish other
than groupers did consider groupers as
a nuisance. They were so common you could
always get groupers in reef fishing.
When the fishermen found out that groupers
were in high demand from lucrative markets
in South East Asia, the groupers fishery
expanded in an enormous scale. Like the
gold rush, there was a wild rush towards
this money-making business. Initially,
fishermen got a fraction of a fraction
of the real value of the groupers. Middlemen
and foreign buyers benefited a lot from
the business. Even though it was a fraction
that the fishermen received, mosques and
schools were built in islands with money
generated through groupers fishery. Some
islanders even gave up traditional tuna
fishery and shifted to the quick bucks
from groupers.
Groupers fishery are especially vulnerable
to over fishing and therefore need special
management measures. Groupers come together
in large groups, called spawning aggregations,
during the full moons, normally between
Septembers to November. Local fishermen
know the exact time and days when groupers
gather for spawning aggregation. The spawning
aggregation areas are normally in the
same location year after year which makes
it easy for fisherman to return to the
areas. During these aggregations, the
female groupers produce planktonic eggs
that are fertilized externally. The fish
also take a long time to reach maturity,
which means that if a large number of
mature adults are fished from the population
one year, it will take a long time before
the population can return to normal. The
size of the population can also be negatively
affected if the fish are caught before
they have had the chance to spawn. These
characteristics combined with the relatively
strong demand for groupers in South East
Asia suggest that some measures need to
be taken to ensure sustainable fishery.
There are almost 40 species of groupers
recorded in the Maldives. As adults, these
top-level predators are usually found
near shallow, high relief coral reefs
|
Save
Groupers Campaign Logo
|
Groupers’ main diet include of
fish such as parrotfish, wrasses, snappers.
Juveniles, on the other hand, eat a diet
composed mainly of crustaceans such as
crab and shrimp. These juvenile groupers
are usually found around coral clumps.
Local fishermen are familiar with a more
than decade of experience know these cycles
and find that the best time to catch this
species is when they are in these large
spawning groups.
This situation is not one that exists
just in the Maldives. Groupers in the
Caribbean, South Pacific and Indian Ocean
are reported to be declining. Some countries
have even gone as far as to close this
fishery in order to protect them from
extinction. . Other countries, have instituted
gear restrictions. Many countries have
taken a number of measures including establishing
marine reserves at some of the spawning
aggregations, but due to the continued
decline in annual catches, it is clear
that additional measures may be needed
to protect this species and the fishery
that it supports.
Urgent conservation measures needed
Groupers are very important for the sustainability
of a reef ecosystem. In order to sustain
the groupers stock, we need urgent actions
such as closuring of fishery during the
spawning season and imposing an export
restriction. Increasing awareness among
stakeholders is also vital for management
of a sustainable groupers fishery.
|