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Disease Risks When Moving Wildlife To New Areas: Endangered Laysan Duck Cautionary Tale
ScienceDaily (Aug. 20, 2009) — Laysan ducks, one of the world's most endangered waterfowl, are native to only the Hawaiian archipelago. For 150 years, Laysan ducks were restricted to an estimated 4 square kilometers of land on Laysan Island in the northwestern Hawaiian Islands. In 2004 and 2005, in an effort to rebuild the population, biologists released 42 Laysan ducks on Midway Atoll, located one day's boat ride from Laysan.
See also:
Plants & Animals
* Birds
* Extinction
* Ecology Research
Earth & Climate
* Ecology
* Exotic Species
* Environmental Policy
Reference
* Short-tailed Albatross
* Anatidae
* Common Eider
* European Rabbit
By 2007, a breeding population was well established on Midway, reaching 200 ducks. However, in August 2008, more than half of the Midway duck population (181 ducks) was lost to a disease epidemic lasting 30 days. Necropsies (the animal equivalent of autopsies) on dead birds revealed botulism type C as a cause of the die-off.
Disturbingly, said Work, 3 ducks were also infected with a worm suspected to be Echinuria uncinata; this worm has been responsible for mass die-offs of Laysan ducks on Laysan Island. Work notes that this worm was either moved to Midway during translocations of ducks from Laysan, despite preventive treatment of all founding birds, or it arrived with migratory waterfowl.
Either way, says Work, this epizootic highlights the disease risk to birds restricted to small island populations and the challenges associated with managing newly translocated endangered species. Frequent population monitoring for early disease detection and comprehensive wetland monitoring and management will be needed to offset the potential effects of avian botulism and parasitism on endangered Laysan ducks, Work said.
The bigger picture, though, is that disease risks need to be closely examined for translocations of all kinds, especially in light of translocations being proposed for dealing with habitat range changes that affect endangered species due to climate change.
This research was presented by the USGS at the Wildlife Disease Association Conference in the first week of August, 2009.
Adapted from materials provided by United States Geological Survey.
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United States Geological Survey (2009, August 20). Disease Risks When Moving Wildlife To New Areas: Endangered Laysan Duck Cautionary Tale. ScienceDaily. Retrieved August 23, 2009, from http://www.sciencedaily.com /releases/2009/08/090803210148.htm
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Related Stories
Laysan Albatross Employs 'Dual Mommies' (May 29, 2008) — What's a girl to do if there's a shortage of males and she needs help raising a family? The Laysan albatross employs a strategy called reciprocity, where unrelated females pair together and take ... > read more
Albatross Study Shows Regional Differences In Ocean Contamination (Apr. 9, 2006) — As long-lived predators at the top of the marine food chain, albatrosses accumulate toxic contaminants such as PCBs, DDT, and mercury in their bodies. A new study has found dramatic differences in ... > read more
In-depth Look At Northwestern Hawaiian Islands Marine Life, Ecosystems (May 27, 2009) — A new report on the Northwestern Hawaiian Islands provides the sharpest picture yet of the region's marine life and ecosystems. The report examines the geographic distribution of the island chain's ... > read more
American Birds Sending Troubling Message About The Environment (Mar. 29, 2009) — A new report based on 40 years of data shows that birds are sending an important and troubling message about the state of the environment. The report also shows that investment in conservation works, ... > read more
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ScienceDaily: Your source for the latest research news and science breakthroughs -- updated daily
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Disease Risks When Moving Wildlife To New Areas: Endangered Laysan Duck Cautionary Tale
ScienceDaily (Aug. 20, 2009) — Laysan ducks, one of the world's most endangered waterfowl, are native to only the Hawaiian archipelago. For 150 years, Laysan ducks were restricted to an estimated 4 square kilometers of land on Laysan Island in the northwestern Hawaiian Islands. In 2004 and 2005, in an effort to rebuild the population, biologists released 42 Laysan ducks on Midway Atoll, located one day's boat ride from Laysan.
See also:
Plants & Animals
* Birds
* Extinction
* Ecology Research
Earth & Climate
* Ecology
* Exotic Species
* Environmental Policy
Reference
* Short-tailed Albatross
* Anatidae
* Common Eider
* European Rabbit
By 2007, a breeding population was well established on Midway, reaching 200 ducks. However, in August 2008, more than half of the Midway duck population (181 ducks) was lost to a disease epidemic lasting 30 days. Necropsies (the animal equivalent of autopsies) on dead birds revealed botulism type C as a cause of the die-off.
Disturbingly, said Work, 3 ducks were also infected with a worm suspected to be Echinuria uncinata; this worm has been responsible for mass die-offs of Laysan ducks on Laysan Island. Work notes that this worm was either moved to Midway during translocations of ducks from Laysan, despite preventive treatment of all founding birds, or it arrived with migratory waterfowl.
Either way, says Work, this epizootic highlights the disease risk to birds restricted to small island populations and the challenges associated with managing newly translocated endangered species. Frequent population monitoring for early disease detection and comprehensive wetland monitoring and management will be needed to offset the potential effects of avian botulism and parasitism on endangered Laysan ducks, Work said.
The bigger picture, though, is that disease risks need to be closely examined for translocations of all kinds, especially in light of translocations being proposed for dealing with habitat range changes that affect endangered species due to climate change.
This research was presented by the USGS at the Wildlife Disease Association Conference in the first week of August, 2009.
Adapted from materials provided by United States Geological Survey.
Email or share this story:
| More
Need to cite this story in your essay, paper, or report? Use one of the following formats:
APA
MLA
United States Geological Survey (2009, August 20). Disease Risks When Moving Wildlife To New Areas: Endangered Laysan Duck Cautionary Tale. ScienceDaily. Retrieved August 23, 2009, from http://www.sciencedaily.com /releases/2009/08/090803210148.htm
Ads by Google
Advertise here
New Liver Treatment
Adult stem cell therapy: request information today!
www.xcell-center.com/LiverDisease
Pericole sexuale
Lipsa de educatie sexuala poate duce la deces. Afla mai mult!
www.informarehpv.ro
Int. Diabetes Monitor
A free online review journal on trends in clinical diabetes.
InternationalDiabetesMonitor.com
China = Stem Cell Leaders
Patients are getting treatments and blogging about them openly..
www.stemcellschina.com
ALS Therapy Development
What is being done to discover a treatment or cure for ALS?
www.als.net
Related Stories
Laysan Albatross Employs 'Dual Mommies' (May 29, 2008) — What's a girl to do if there's a shortage of males and she needs help raising a family? The Laysan albatross employs a strategy called reciprocity, where unrelated females pair together and take ... > read more
Albatross Study Shows Regional Differences In Ocean Contamination (Apr. 9, 2006) — As long-lived predators at the top of the marine food chain, albatrosses accumulate toxic contaminants such as PCBs, DDT, and mercury in their bodies. A new study has found dramatic differences in ... > read more
In-depth Look At Northwestern Hawaiian Islands Marine Life, Ecosystems (May 27, 2009) — A new report on the Northwestern Hawaiian Islands provides the sharpest picture yet of the region's marine life and ecosystems. The report examines the geographic distribution of the island chain's ... > read more
American Birds Sending Troubling Message About The Environment (Mar. 29, 2009) — A new report based on 40 years of data shows that birds are sending an important and troubling message about the state of the environment. The report also shows that investment in conservation works, ... > read more
Search ScienceDaily
Number of stories in archives: 44,032
Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily's archives for related news topics,
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Ads by Google
Advertise here
Want to remove 99.9% of
... your Bilge Water oil automatically? Maintenance free!
www.bilgelicker.com
Aspergers - know someone?
See research on great autism treatment now available for all
www.FreeAutismReport.com
Biological Field School
Maderas Rainforest Conservancy Costa Rica and Nicaragua
www.maderasrfc.org
Just In:
Why Sleep? To Boost Efficiency, Minimize Risk
Ultrathin LEDs: New Class Of Displays
Oxycholesterol: Greatest Heart Disease Risk?
Artificial Life One Step Closer?
New Way To Reproduce A Black Hole?
Aphids Saved From Gruesome Death By Virus
Human Appendix: No Biological 'Remnant'
Bioluminescent 'Green Bombers' From The Deep
Bioluminescent 'Green Bombers' From The Deep
Science Video News
Possible Fix For Global Warming?
Engineers have designed a simple, sustainable and natural carbon sequestration solution using algae. A team at Ohio University created a photo. ... > full story
* Using Radar, Meteorologists See Increase in Hurricane-Made Tornadoes
* Physicists Explain How To Sail Faster Than The Wind
* Marine Biologists Work To Protect Seahorses By Developing A Breeding Program
* more science videos
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* Satellites put into orbit for Japan and Australia
* Scientists make "sugar bug" drug for bowel disease
* Gene swap experiment makes altering bugs easier
* Mercury-tainted fish found widely in U.S. streams
* LED display technology gets a twist
* more science news
In Other News ...
* Afghan challenger says election "widely rigged"
* Hundreds flee wildfire torching homes near Athens
* Pakistan Taliban name new leader but doubts remain
* Rival Koreas meet ahead of state funeral
* Australian oil well to gush for nearly two months
* CIA report has new details of prisoner abuse
* Weaker Hurricane Bill moves towards eastern Canada
* North Korea's Kim sends message to South's leader
* more top news
Copyright Reuters 2008. See Restrictions.
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