Ducks’ deaths near Desert Shores blamed on virus

Updated May 12, 2017 - 11:54 am

Following the euthanation of a black swan was shot with an arrow, Desert Shores residents continue to find dead waterfowl, this time raising concerns about microbes in the water.

After 19 animals had been found dead, two of the carcasses were sent to University of California, Davis, for testing. The results came back May 11 and show the ducks are dying from an acute viral infection, most likely duck viral enteritis, a herpes virus infection.

Duck viral enteritis causes internal bleeding and severe diarrhea. It kills many infected birds but doesn’t affect people.

“It’s like HIV for birds. … It’s sad,” said Lori McGrath, a member of the Duck Squad, a loose-knit group of about four residents who feed and watch over the ducks.

UC Davis checked also for poisoning. Those tests came back negative.

Valerie Tobler founded the Duck Squad after moving to the neighborhood in 1989. When a duck has a fishhook in its mouth, she frees it. If one is hit by a car or has a broken leg, she cares for it. Tobler said it was heartbreaking to find the birds’ bodies or see them acting listless.

“The first was a female,” Tobler said. “I didn’t see any injuries to her. … I left her there and the next day, I found her dead.”

It’s possible DVE is spread by infected ducks that shed the virus in their excrement. The virus survives in water, particularly in stagnant or slow-moving waterways. Waterfowl ingest the virus through drinking or swimming in affected water or by eating contaminated food.

It’s estimated that 30 birds at Desert Shores have died from it. Deceased Muscovy ducks and a dead mallard were found on north and south Lake Madison and north Lake Jacqueline.

Peregrine Wolff, a veterinarian with the Nevada Department of Wildlife, said the number of ducks dying all at once usually points to botulism C. But the tests ruled that out.

DVE, also known as duck plague, usually occurs in clusters, she said. Wolff said the virus could have been introduced by a new bird, or it could have been in a dormant state and activated through the stress of the mating season. Muscovy ducks seem to be more highly susceptible to DVE, she said.

“There are going to be some that are probably immune and won’t die, but most are going to die, as we’ve already seen,” Wolff said. “In most instances, it occurs in captive populations of Moscovy ducks or other domestic ducks.”

The mortality rate will be about 60 percent before the infection is over, Wolff said. She told of an outbreak in 1973 at Lake Andes National Wildlife Refuge in South Dakota that had devastating results, killing off roughly 100,000 birds. Containing such an outbreak is nearly impossible, as birds can fly in and out at will.

Infected birds may show signs of DVE within three to seven days of being exposed. Indicators include listlessness, a loss of appetite, bloody discharge from the bill area and emitting watery diarrhea. On occasion, swollen eyelids and drooping wings are noted. Some ducks are found dead without exhibiting any signs.

Wolff said Desert Shores management told her they opted to “ride it out” and let nature take its course.

“There’s not much you can do if it’s not a closed facility,” Wolff said, adding that disposing of the carcasses would help keep it from spreading.

Although humans cannot contract DVE, they should wear latex gloves when disposing of a bird carcass, Wolff said. Dogs should be kept away from the dead birds, she added.

Normally, Tobler said, quite a few birds get hit by cars each year, but only a few get sick.

“But not like this; these ducks are pretty much on their last legs or they’re already dead,” she said.

Contact Jan Hogan at jhogan@reviewjournal.com or 702-387-2949.

ad-high_impact_4
Local
Construction for new 51s ballpark underway
New home of the Las Vegas 51s is planned to be finished by March 2019 in Summerlin according to team president Don Logan. (Marcus Villagran/Review-Journal) @brokejournalist
Underground home was built as Cold War-era hideaway
The underground house at 3970 Spencer Street is one of the valley’s most unusual homes built 26 feet underground in 1978 by Girard “Jerry” B. Henderson, who, planned to survive the end of the world there.
Lip Smacking Foodie Tours takes you where the locals go
Donald Contursi talks about Lip Smacking Foodie Tours, which offers walking tours of restaurants on and off Las Vegas Boulevard with food samples and tidbits of history about the places they visit.
Bump stock manufacturers under fire
The Justice Department said last month that it had started the process to amend federal firearms regulations to clarify that federal law defines bump stocks as machine guns.
Art Bell’s Top 10 Shows
A selection of radio host Art Bell’s most popular shows.
Longtime Las Vegas attorney John Momot dies at age 74
Criminal defense attorney John Momot, who represented mob figures and even played himself in the movie “Casino,” has died.
David Copperfield in court after man injured during magic trick
The attorney for a British man who is suing illusionist David Copperfield said his client suffered serious injuries after being called on stage during Copperfield's show at MGM Grand.
5 things connecting Las Vegas and Marilyn Monroe
1. Marilyn Monroe, known then as Norma Jeane, obtained her first divorce in Las Vegas at the age of 20 on September 13, 1946. 2. According to some biographers, Monroe lived at 604 S. 3rd Street for four months during the summer of 1946. The house has since been torn down and is now the site of a parking lot. 3. In 1954, Monroe almost married Joe DiMaggio in Las Vegas but the wedding was called off last minute. The wedding was to be held at the Hotel El Rancho Vegas which was located on the southwest corner of Sahara Avenue and Las Vegas Boulevard. 4. Las Vegas has at least one road dedicated to the star. Marilyn Monroe Avenue is located in east Las Vegas and intersects with Betty Davis Street and Cary Grant Court. 5. There are currently more than 20 Marilyn Monroe impersonators for hire in the Las Vegas Valley.
Sir Richard Branson announces purchase of Hard Rock Hotel
Sir Richard Branson, founder of the Virgin Group, has acquired the Hard Rock Hotel with partners and plans to turn it into a Virgin-branded property by the end of 2019.
3 Centennial High School students killed in Calif. crash (Full)
Three Centennial High School students were killed Thursday morning in Southern California when their vehicle was struck by a suspected drunken driver while they were enjoying their spring break, according to a family member of one of the victims.
Retail Restroom Sexual Assault Suspect
Las Vegas police are asking for help finding a man they said groped a woman in a south Las Vegas Valley restroom. (Las Vegas Metropolitan Police Department)
Calvary Christian Learning Academy, “There was no fair warning.”
Samantha O’Brien, whose three-year-old daughter attended the Calvary Christian Learning Academy daycare, found out Monday night when her daughter’s teacher called about the school closing.
TOP NEWS
News Headlines
Home Front Page Footer Listing
Circular
You May Like

You May Like