Pelican deaths linked to sick fish
Article Abstract:
Avian botulism due to bacterial infection in the tilapia may be responsible for the death of around 1,125 endangered brown and 8,525 American white pelicans, and 4,383 other birds in the Salton Sea in southern California. Scientists fear that bacterial infection due to Vibrio alginolyticus causes botulism spores to germinate and produce toxin in the intestinal tract of the sick fish. This toxin enters the body of pelicans, herons and other birds, when they consume these fish. Environmental stresses such as overcrowding, pollution, and high salt level or temperatures may cause fish diseases.
Publication Name: Endangered Species Update
Subject: Zoology and wildlife conservation
ISSN: 1081-3705
Year: 1996
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MacFarlane's four-o'clock is reclassified
Article Abstract:
The MacFarlane's four-o' clock plant, Mirabilis macfarlanei, has been reclassified from being an endangered plant to the less critical category of being threatened. There are about 1,000 plants in 18 locations that are potentially threatened by insect predation, non-native plants and lack of plant recruitment in some areas. The plant will therefore continue to receive the Endangered Species Act protection till full recovery. Efforts to protect MacFarlane's four-o'clock plant include relocation of livestock, redefinition of grazing allotments and conservation of habitat.
Publication Name: Endangered Species Update
Subject: Zoology and wildlife conservation
ISSN: 1081-3705
Year: 1996
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Songbirds sing again in California
Article Abstract:
The mating calls of male vireos, the gray-olive songbirds, are being heard again in Southern California's rivers and streams, owing to the successful recovery efforts of various State and federal agencies. A factor critical to the recovery of this species is the effective management of the brown-headed cowbird, which share a special nesting relationship with vireos. However, conservationists say that although the vireo population continues to show impressive growth, it is far from complete recovery.
Publication Name: Endangered Species Update
Subject: Zoology and wildlife conservation
ISSN: 1081-3705
Year: 1995
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