title: Parasite threat to panda conservation.
abstract: The giant panda is a global symbol of wildlife conservation that is threatened by historic and current habitat loss. Despite a great deal of research on the physiology, reproductive biology, and diet of pandas in the wild and in captivity, there is little information on wild panda mortality. Here we integrate previously unavailable data on the mortality of wild pandas. We report on three recent phases of panda mortality: deaths due to bamboo flowering in the 1970s and 1980s, surprisingly extensive poaching in the 1980s and 1990s, and a parasitic infection over the past few years. Our analyses suggest that the current most significant threat to wild panda survival is disease due to extraintestinal migration (visceral larval migrans) by an ascarid nematode. We demonstrate that the probability of death of wild pandas being caused by this disease increased significantly between 1971 and 2005 and discuss the possible factors leading to the emergence of this disease.
authors.affiliation: Institute of Zoology and Graduate University, Chinese Academy of Sciences, Beijing 100101, China.
authors.forename: Jin-Shuo
authors.initials: JS
authors.lastname: Zhang
authors.forename: Peter
authors.initials: P
authors.lastname: Daszak
authors.forename: Hua-Li
authors.initials: HL
authors.lastname: Huang
authors.forename: Guang-You
authors.initials: GY
authors.lastname: Yang
authors.forename: A Marm
authors.initials: AM
authors.lastname: Kilpatrick
authors.forename: Shuyi
authors.initials: S
authors.lastname: Zhang
mesh_terms: D000818:Animals; D017191:Ascaridida Infections / Q000401:mortality / Q000662:veterinary; D003247:Conservation of Natural Resources; D016015:Logistic Models; D001503:Ursidae / Q000469:parasitology*