Navigation Links
Hatchery fish outnumber wild chinook salmon in troubled fall run
Date:4/3/2008

d. "One study used CWT recoveries from hatchery fish and estimated that 33 percent of adults returning to rivers in the Central Valley were from hatcheries. The other number floating around comes from counting the number of fish returning to spawn in rivers versus returning to hatcheries, and this estimated the number of 'wild' fish to be 3.5 times higher than hatchery returns."

One reason these figures are so important is that they could affect the listing of the fall run under the Endangered Species Act (ESA). The question of whether hatcheries can help restore threatened and endangered salmon populations or if they actually harm wild populations has long been a controversial issue. It became a legal issue in 2001, when a federal judge revoked the ESA listing of Oregon coast coho salmon, ruling that the National Marine Fisheries Service (NMFS) should have included hatchery fish in the population counts.

A more recent federal court ruling, however, concluded that the health and viability of natural populations should be used as the benchmark for ESA status determinations. That ruling has been appealed to the U.S. Court of Appeals for the Ninth Circuit.

"The agency's policy on counting hatchery fish has flip-flopped as a result of these different legal decisions," Grimes said. "Now the focus is again on wild fish, and it doesn't appear there are many of them. That could be bad news for fishing because, if the fall run is listed under the Endangered Species Act, there would be no legal harvest."

Fisheries experts blame unfavorable ocean conditions for the dismally low returns of chinook and coho salmon to rivers and streams all along the West Coast this year. In 2005, when this year's returning salmon were juveniles just entering the ocean, food production in the California Current was much lower than usual due to a delay in the wind-driven upwelling of nutrient-rich water that sustains the food web along the coast. A similar di
'/>"/>

Contact: Tim Stephens
stephens@ucsc.edu
831-459-2495
University of California - Santa Cruz
Source:Eurekalert

Page: 1 2 3 4 5

Related biology news :

1. Unfavorable ocean conditions likely cause of low 2007 salmon returns along West Coast
2. Fish farms drive wild salmon populations toward extinction
3. UW launches cutting-edge DNA fin-printing project for salmon
4. Understanding, combating foodborne pathogens E. coli 0157 and salmonella
5. Salmonid hatcheries cause stunning loss of reproduction
6. New paper examines dams effects on California salmon
7. Salmon garnish points the way to green electronics
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/22/2015)... Technology Showcase, Hall E -   EyeLock Inc. , ... it will showcase its EyeLock ID technology integrated in a ... Energy,s Oak Ridge National Laboratory (ORNL) at the ... identity authentication technology is being used to validate the driver ...
(Date:1/22/2015)...  Analyst Report Issued by Small Cap IR. In 2011, Nilson ... transactions at merchants on the leading payment cards rose to ... debit, and prepaid cards reached 6.54 billion.  Eight million credit ... usage in 2012, and credit and debit card fraud resulted ...
(Date:12/24/2014)... its launch in December 2014, the 1U™ app ... trying to remember their usernames and passwords through replacing the ... To assist people who have struggled to remember usernames and ... and focuses on redefining identity, announced today that it is ...
Breaking Biology News(10 mins):EyeLock Debuts First Iris Authentication Technology Embedded in 3D Printed Automobile 2EyeLock Debuts First Iris Authentication Technology Embedded in 3D Printed Automobile 3$4.80 Near Term Price Target with "Buy" given by CapRock Research for NXT-ID, Inc. (NASDAQ: NXTD) issued by Small Cap IR 21U Offers Best Solution to the Username / Password Dilemma: For FREE! 21U Offers Best Solution to the Username / Password Dilemma: For FREE! 3
... of the International Society for Sexually Transmitted Disease Research ... City, Canada. The world,s foremost conference in the ... from every continent to discuss the most recent developments ... emerging threats in bacterial STDs; major intervention programs for ...
... University of Georgia researcher has invented a new ... clothing, face masks, paper towelsand yes, even diapers, ... germ-free. The simple and inexpensive anti-microbial technology ... can be applied during the manufacturing process or ...
... are developing new technologies that combine a laser ... particles such as bacteria, viruses and DNA for ... to food safety. The technologies could bring ... or miniature instruments that perform measurements normally requiring ...
Cached Biology News:New UGA technology makes textiles permanently germ-free; targets health care-associated infections 2New UGA technology makes textiles permanently germ-free; targets health care-associated infections 3Laser, electric fields combined for new 'lab-on-chip' technologies 2Laser, electric fields combined for new 'lab-on-chip' technologies 3
(Date:1/23/2015)... Portal Solutions , a technology consulting ... Microsoft Office 365 and SharePoint platforms , today announces its ... being one of the region’s fastest-growing mid-sized companies based on ... , “To be recognized a second year in a row ...
(Date:1/22/2015)... 22, 2015 GEA Niro Soavi the ... laboratory homogenizer, the PandaPLUS 2000, which is ideal for ... and cell disruption . This compact laboratory homogenizer ... juices, liquid food, food additives and ingredients as well ...
(Date:1/22/2015)... Protocol Networks brings independent technology consulting ... brand-neutral, independent consultants, Protocol Networks has recently announced its ... the years, his company has attracted several clients in ... as well as others. With the success of these ...
(Date:1/22/2015)... Dr. Greg Leyer of UAS Labs recently was invited to ... on probiotics in San Diego, CA. , The Scripps ... health care professionals. This year’s pre-conference seminar was held on ... Dr. Leyer spoke about the emerging topics and science in ...
Breaking Biology Technology:Washington SmartCEO Announces Portal Solutions as 2015 Future 50 Award Winner Second Year in a Row 2Washington SmartCEO Announces Portal Solutions as 2015 Future 50 Award Winner Second Year in a Row 3GEA Niro Soavi Announces the PandaPLUS 2000 Homogenizer for Processing New Applications for Nanoemulsions and Cell Disruption 2Protocol Networks Brings Independent Technology Consulting to the Constitution State 2
... Turner Fellow at Stony Brook University (SBU), will give ... in Philadelphia on controlling the size of nanoclusters, research ... Department of Energy,s Brookhaven National Laboratory. Built by Brookhaven ... make nanoclusters of 10 to 100 atoms with atomic ...
... Technology (NIST) and the Joint Quantum Institute (JQI), a ... have reported a new way to fine-tune the light ... of lasers. Their technique, published in Physical Review ... source of pairs of entangled photons, a property with ...
... New Contracts Valued at $115.5 Million Signed in Fourth ... ARAY ), a global leader in the field ... and fiscal year,ended June 28, 2008., For the ... $50.9 million, a 16 percent increase over fourth quarter ...
Cached Biology Technology:Light touch: Controlling the behavior of quantum dots 2Accuray Announces Results for the Fourth Quarter and Fiscal Year End 2008 2Accuray Announces Results for the Fourth Quarter and Fiscal Year End 2008 3Accuray Announces Results for the Fourth Quarter and Fiscal Year End 2008 4Accuray Announces Results for the Fourth Quarter and Fiscal Year End 2008 5Accuray Announces Results for the Fourth Quarter and Fiscal Year End 2008 6Accuray Announces Results for the Fourth Quarter and Fiscal Year End 2008 7Accuray Announces Results for the Fourth Quarter and Fiscal Year End 2008 8Accuray Announces Results for the Fourth Quarter and Fiscal Year End 2008 9
... the Axima range, the AXIMA-CFR provides ... resolution, sensitivity and mass range, and ... and reflectron time-of-flight analysis. The unique ... generation of seamless PSD, providing efficient ...
... The new MALDI O-TOF creates a new ... an orthogonal platform that has been licensed ... University of Manitoba. , As the first ... design and collisional cooling, the prOTOF 2000 ...
Rat Lung Fibroblasts (RLF) (>500,000 cells)...
Rat Aortic Endothelial Cells (RAOEC) (>500,000 cells)...
Biology Products: