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  운영자 2005-02-14 17:50:27 | Hit : 21176 | Vote : 8030
Subject   [소식] 오레곤동물원 콘돌병아리에 웨스트나일바이러스백신 OREGON ZOO VACCINATES CONDOR CHICK FOR WEST NILE VIRUS

PORTLAND, Ore.-With the arrival of the West Nile virus in Oregon,

Oregon Zoo veterinarians have vaccinated its condor chick with a new

avian vaccine.

"We know West Nile is in parts of Oregon and may soon may be in the Portland metro area," said zoo veterinarian Dr. Mitch Finnegan. "It's critical we protect our condor chick."

Finnegan will draw blood from the chick in a month to determine if antibodies have formed, indicating protection. Concern among conservationists for threatened and endangered birds,

such as condors, led to the development of the vaccine. With only 247

birds in existence, protecting genetic diversity is critical to the

survival of the species. The loss of even one bird can have a serious

impact on the genetic health of the entire population. American Bird

Conservancy, American Zoo and Aquarium Association, and Disney

Wildlife Conservation Fund led the efforts to develop a West Nile

vaccine for birds. It is hoped that the vaccine will prove an

effective tool for protecting condors.

The vaccine was created at the Centers for Disease Control and Prevention by microbiologist Jeff Chang and was given to crows before

the vaccine was tested on condors. The vaccine reduced the mortality

rate in West Nile-infected crows by 40 percent. According to Chang,

the vaccinated condors seem to be responding well, with the majority

of the roughly 188 birds developing antibodies.

"As long as there is a detectible antibody, the host will be


That is happening in the majority of the condors now," Chang said. "I

am very sure the condors are going to be well protected because of

this vaccine."

A majority of the condor population has been vaccinated as part of a study conducted by the CDC, the U.S. Fish and Wildlife Service and Aldevron, a biotechnology company that produced the vaccine. The

first condor was vaccinated at the Los Angeles Zoo in October of

2002. The program has expanded to the other breeding facilities,

which includes the Oregon Zoo. Condors living in the wild will also

be vaccinated.

West Nile virus was first detected in the United States in 1999. The virus is spread by the bite of an infected mosquito. The virus can be devastating to wildlife, especially birds in the corvid family, which include ravens, crows, jays, magpies, and nutcrackers. The virus can

also infect humans, horses and other mammals. At present, no condor

has tested positive for the virus.

Oregon Zoo's condor facility is located in Clackamas County on Metro-owned open space. The remoteness of the facility minimizes the exposure of young condors to people, increasing the chances for captive-hatched birds to survive and breed in the wild. Condors have a long history in Oregon. The condor was a common design motif of the Wasco people, who lived along the Columbia River from

The Dalles to Cascade Locks. The condor was considered a helper to

the native peoples and a key character in many myths.

The last condors were seen in Oregon in 1904, near the town of Drain,

in southwest Oregon. Condors held out a little longer in California,

but in 1987, there were only 17 left in the wild. In an attempt to

save the species, biologists decided to place all the remaining

condors into a captive breeding program. When Congress passed the

Endangered Species Act in 1973, the California condor was one of the

original animals included on the list. Today there are 247 California

condors in captivity and the wild.

The Oregon Zoo is only the third zoo in the nation invited to join

the California Condor Recovery Program. With the first phase of the

breeding facility completed last November, twelve condors arrived

from Program members at the Los Angeles Zoo, San Diego Zoo's Wild

Animal Park and The Peregrine Fund's World Center for Birds of Prey

in Boise, Idaho.

The zoo is a service of Metro and is dedicated to its mission to

inspire the community to create a better future for wildlife.

Committed to conservation, the zoo is currently working to save

endangered California condors, Oregon silverspot butterflies, western

pond turtles, Washington pygmy rabbits, and Kincaid's lupine. Other

projects include studies on black rhinos, Asian elephants, polar

bears and bats.

Oregon Zoo o 4001 SW Canyon Rd o Portland, OR 97221 o

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