September 28, 2012|By Faye
Flam, Inquirer Staff Writer
Haiti has lost 99 percent of
its native forest, but every time Pennsylvania State University biologist Blair
Hedges explores the tiny patches that remain, he finds dozens of species of
frogs, some previously unknown to science.
With their forest habitat fast
disappearing, the only future for these creatures may be here in Philadelphia.
On Wednesday, a group of
Haitian government officials and environmental activists visited their
country's native frogs at the Philadelphia Zoo, the only facility in the world
raising these critically endangered animals in captivity.
"We're hoping to show the
Haitians that these frogs have value," Hedges said. Over several
expeditions, he and Carlos Martinez, a zoo conservation biologist, have brought
154 live frogs from Haiti. Their number at the zoo has climbed to an estimated
1,400. Of 10 original species, nine have produced young.
Reptile keeper Joyce Foreman
works with Martinez to figure out what to feed the frogs and their tiny
offspring. In an adjoining room, Parker shows the various insects she's raising
in plastic containers.
The zoo has tried fruit flies,
she said, but the frogs tend to ignore them. Other menu options are live pill
bugs, crickets, bean beetles, and springtails.
Parker and Martinez have
experimented with temperature and humidity, hoping to re-create the conditions
of the cool mountain forests where the frogs were caught. "We don't know
the exact ecology," Martinez said. "We're learning along the
way."
The most prolific species are
the La Hotte frog, the breast-spot frog, and a tuneful frog named after
Wolfgang Amadeus Mozart.
Another musical species, the
La Hotte glanded frog, has a metallic chime to its call, Parker said, but this
creature is more difficult to breed. The offspring are tiny and so far haven't
survived in captivity.
The frogs are not currently on
display, though some hardier species may become part of an exhibit.
While North American frogs go
through a tadpole stage, many tropical species either give live birth to tiny
frogs or lay eggs that hatch into froglets, Martinez said.
Some of the Haitian frogs are
so small the adults can fit on a quarter. Some are greenish, some reddish, some
spotted, some pudgy, and some leggy.
Haitian officials asked about
the living conditions and the frogs' safety. Lyonel Valburn, the director
general of the Haitian Ministry of Agriculture, said he was pleased he could
count on Philadelphia to take care of Haiti's frogs.
The zoo is no substitute for
the rich forests that once made Haiti a paradise. The nation is home to 50
known species of frog, though Hedges has found enough new ones to suspect Haiti
is losing frogs that will never be known to humanity. On an evening trek, he
once discovered five new species.
Though Haiti has set aside
national parks, the government hasn't been able to enforce the boundaries,
Hedges said. People still come in and cut down trees to make charcoal, which
they depend on for cooking.
After the morning tour, Hedges
and Martinez spent the afternoon with the Haitian officials, trying to work out
some plan to preserve Haiti's tiny but diverse patches of forest. Along with
the agriculture official were two people from the division of parks and soils,
and leaders of the Haiti Audubon Society.
The participants discussed
many possibilities, including educational programs, building
"ecolodges" for tourism and research, farming trees for charcoal, and
paying people not to destroy the forest.
Some scientists view Haiti as
a microcosm of the world and an example of what can happen when human beings
put extreme stress on the environment.
Hedges said he and other
biologists were not balancing the lives of humans against those of frogs. If
people remain dependent on cutting trees, then when the last forests collapse,
they will die too.
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