10 Apr 2007 - Manila,
the Philippines – An infestation of predator
starfish is decimating large tracts of coral
reef throughout the Philippines.
The spiny and toxic crown-of-thorns starfish
are voracious predators that can wipe out
large areas of coral; an individual can
consume up to 6 square metres of living
reef per year. Outbreaks of the species
often occur when ocean temperatures and
nutrient levels increase.
Unfortunately, some of the starfish’s major
predators, such as humphead wrasse and giant
triton, which usually keep the species in
check have declined in recent years as a
result of overfishing.
“We are experiencing a return of the starfish
in greater numbers,” said WWF-Philippines
CEO Lory Tan. “The situation facing our
reefs is far from normal.”
The Philippines once boasted 25,000km2
of coral reef. However, a recent World Bank
study shows that barely 1 per cent of this
area remains pristine, and more than 50
per cent are reported to be in decline or
unhealthy.
To combat the outbreak, WWF-Philippines
is enlisting the help of beachgoers to reduce
the number of starfish in an infested area.
The most recent action netted hundreds from
the world-class diving site of Apo Reef
off the west coast of the island of Mindoro,
about 100km south of the capital, Manila.
“In the long term, the best response to
the situation is by putting a stop to overfishing
and agricultural runoff, and to better manage
sewage,” Tan adds. “It’s important to keep
our oceans clean and our reefs well balanced.”
END NOTES:
• According to a WWF survey, outbreaks
of crown-of-thorns starfish have been reported
at Apo Reef and Puerto Galera in Mindoro,
as well as at Mabini in Batangas, Roxas
in Palawan, Bolinao in Lingayen Gulf, and
Kiamba and Glan in Sarangani Bay. It is
possible that many other coastal areas have
been affected as well.
• Crown-of-thorns starfish have long spines
and are capable of severe stings. Contact
will almost surely inflict severe swelling,
pain and nausea that can last for hours
or days.
Gregg Yan, Media Officer
WWF-Philippines
