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100-year-old specimens at California museum help determine when avian pox hit Galapagos
Date:1/13/2011

A research team from across the United States and Ecuador has pinpointed 1898 as the year the avipoxvirus, or avian pox, hit the Galapagos Islands and started infecting its birds. This estimation is vital to understanding avian diseases that affect today's Galapagos birds. The scientists' paper on the subject, "110 Years of Avipoxvirus on the Galapagos Islands," will be published on January 13 in PLoS ONE, an international, open-access science publication.

The research team, led by Dr. Patricia Parker of the University of MissouriSt. Louis, examined 3,607 finches and mockingbirds collected in the Galapagos between 1898 and 1906 that are currently held at the California Academy of Sciences in San Francisco, along with 266 birds collected in 1891 and 1897 held at the Zoologische Staatssammlung in Munich, Germany. The scientists inspected the birds for skin lesions associated with avian pox infection and found 226 candidates dating from 1898 or later. For a small subset of these (59 specimens), the scientists took tissue samples for further pathological studies. In the end, a total of 21 specimens scored positive for avipoxvirus using histology (tissue examination under a microscope) and genotyping (screening for viral DNA).

"Without museum collections, work like this would never be possible," said Dr. Jack Dumbacher, Curator of Ornithology at the California Academy of Sciences. "Because museum specimens include detailed collection date and location data, they can be used to study not only a particular species, but also historical events and environmental conditions. Without this library of specimens, we might never have learned when or how this potentially devastating disease made its way to Darwin's famous islands."

The Academy has a deeply rooted history of research in the Galapagos, where it helped to found the Charles Darwin Research Station at Academy Bay, as well as the Galapagos National Park. The museum sent its first
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Contact: Stephanie Stone
sstone@calacademy.org
415-379-5121
California Academy of Sciences
Source:Eurekalert  

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