Fish and aquatic news » Blue Ram http://www.aquaticcommunity.com/news The latest news from below the surface Wed, 23 Oct 2013 11:30:17 +0000 en-US hourly 1 http://wordpress.org/?v=3.6.1 Amazon Molly using Genetic Tricks to Survive http://www.aquaticcommunity.com/news/lib/47 http://www.aquaticcommunity.com/news/lib/47#comments Fri, 02 May 2008 16:35:44 +0000 Blue Ram http://www.aquaticcommunity.com/news/?p=47 Scientists from the University of Edinburgh believe that the Amazon Molly may be using genetic survival tricks to avoid becoming extinct. The species in Texas and Mexico interact with males of different species to reproduce. The fry are clones of the mother and never inherit any traits of the male. This species will soon develop problems reproducing and will often […]

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Scientists from the University of Edinburgh believe that the Amazon Molly may be using genetic survival tricks to avoid becoming extinct. The species in Texas and Mexico interact with males of different species to reproduce. The fry are clones of the mother and never inherit any traits of the male. This species will soon develop problems reproducing and will often become victims to extinction.

 

At Edinburgh University, the scientists have studied mathematical models on a computing system to look at the case of the Amazon Molly. Researchers have decided that the time to extinction for the fish may be over many thousands of generations. They can now say that this fish should have been extinct within the past 70,000 years. Scientists think that the Amazon Mollies are still dwelling in the rivers of Southeast Texas and Northeast Mexico and are using the special genetic tricks to stay alive.

 

To read more on this visit http://news.bbc.co.uk/2/hi/uk_news/scotland/edinburgh_and_east/7360770.stm

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New England Aquarium Dive Club rescued lionfish. http://www.aquaticcommunity.com/news/lib/28 http://www.aquaticcommunity.com/news/lib/28#comments Sat, 26 Apr 2008 00:21:38 +0000 Blue Ram http://www.aquaticcommunity.com/news/?p=28 Connect to a piece of seaweed, were some fish eggs that are laid in Florida and the Caribbean catch a ride in the Gulf Stream to the coast line of Rhode Island. When they hatch they stand little to no chance to surviving as soon as the water cools down starting in th Fall. But a group of divers found […]

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Connect to a piece of seaweed, were some fish eggs that are laid in Florida and the Caribbean catch a ride in the Gulf Stream to the coast line of Rhode Island. When they hatch they stand little to no chance to surviving as soon as the water cools down starting in th Fall. But a group of divers found them on an annual basis. For apporxmatley 25 years the New England Aquarium Dive Club has been doing this. In the Fall, about 200 divers were sent out to rescue as many juvenile fish as possible. Each year the fish that were rescued are donated to different aquariums and fish keepers.

With 70 people last year, the group caught their first lionfish. Usually the gruoup will catch 30 to 40 different fish. Butterflyfish are usually the most common kind found. This year the club was held in the conjunction. With there being warmer water, children and snorklers got involved as well. Al Bozza, the New England Aquarium Dive Club director, described this year’s rescue as a family event, and pointed to the education opportunity for children.

To read more about this get ahold of the Aquarium Fish International Janurary Issue.

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Judge rejects request to stop Oregon, Washington from killing sea lions to protect salmon http://www.aquaticcommunity.com/news/lib/27 http://www.aquaticcommunity.com/news/lib/27#comments Fri, 25 Apr 2008 23:51:54 +0000 Blue Ram http://www.aquaticcommunity.com/news/?p=27 A federal judge on Wednesday refused to stop Oregon and Washington from trapping and killing California sea lions at Bonneville Dam this spring to keep them from gobbling endangered salmon. The Humane Society of the United States filed a lawsuit against the plan and asked for a preliminary court injunction to stop it. Humane Society attorneys argued that culling sea […]

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A federal judge on Wednesday refused to stop Oregon and Washington from trapping and killing California sea lions at Bonneville Dam this spring to keep them from gobbling endangered salmon.

The Humane Society of the United States filed a lawsuit against the plan and asked for a preliminary court injunction to stop it.

Humane Society attorneys argued that culling sea lions won’t significantly benefit threatened salmon and steelhead runs. Shooting the animals would harm Columbia River kayakers and others who have relationships with individual sea lions, they said

But U.S. District Judge Michael Mosman rejected the injunction request. The judge agreed that it appears somewhat arbitrary to crack down on sea lions when fishing kills more salmon listed under the Endangered Species Act. But initial evidence indicates that sea lions do “very serious” harm to endangered and threatened salmon, Mosman ruled.

“It’s a rather remarkable thing to say that (destroying) an individual animal will cause irreparable harm,” Mosman said early in the hearing. He later called the Humane Society’s evidence of damage “far less weighty” than the government’s.

State officials said they could begin trapping sea lions as early as Tuesday, targeting animals that have been seen eating federally protected fish at the dam.

The plan authorizes capturing and killing up to 85 sea lions a year for five years. But the states’ goal is to capture 30 this year, with first priority given to relocating the animals to captive environments such as Sea World and the St. Louis Zoo.

About 20 slots have been found so far, said Guy Norman, director of the Washington Department of Fish and Wildlife’s Vancouver office. Only about four weeks remain in the spring chinook’s journey upriver to Bonneville, Norman said.

“Our No. 1 step is to relocate as many sea lions as we can,” he said. “Whether we will get to lethal means this year is unknown.”

Anglers and biologists have grown increasingly frustrated with sea lions that feast on salmon gathering to climb Bonneville’s fish ladders. Last year, crews counted sea lions eating more than 4 percent of the salmon run, although biologists suspect they probably ate more.

Sea lion numbers have surged from about 1,000 animals in the 1930s to about 238,000 now along the West Coast. Fishery managers say it doesn’t make sense to let sea lions eat salmon while the Northwest restricts fishing and spends billions to try to help the fish recover.

Humane Society officials said the killing of sea lions at Bonneville Dam would be the first government-led killing since at least 1994, when Congress beefed up protection of marine mammals.

Other sea lions probably will take the place of the captured sea lions, they argued. Getting rid of 30 sea lions would save about 2,100 endangered or threatened fish, far fewer than fishing takes.

A decisive hearing on the lawsuit will be held as early as mid-May — when sea lion trapping probably will be finished for the year.

Sharon Young, a Humane Society field director, said the government should back off in the meantime. “We’re hoping they will not start shooting while the court is still hearing arguments.”

I have recieved permission to use this news article from Scott Learn at scottlearn@news.oregonian.com

 

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