Navigation Links
Silent streams? Escalating endangerment for North American freshwater fish
Date:9/9/2008

Nearly 40 percent of fish species in North American streams, rivers and lakes are now in jeopardy, according to the most detailed evaluation of the conservation status of freshwater fishes in the last 20 years.

The 700 fishes now listed represent a staggering 92 percent increase over the 364 listed as "imperiled" in the previous 1989 study published by the American Fisheries Society. Researchers classified each of the 700 fishes listed as either vulnerable (230), threatened (190), or endangered (280). In addition, 61 fishes are presumed extinct.

The new report, published in Fisheries, was conducted by a U.S. Geological Survey-led team of scientists from the United States, Canada and Mexico, who examined the status of continental freshwater and diadromous (those that migrate between rivers and oceans) fish.

"Freshwater fish have continued to decline since the late 1970s, with the primary causes being habitat loss, dwindling range and introduction of non-native species," said Mark Myers, director of the USGS. "In addition, climate change may further affect these fish."

Most Vulnerable Groups

The groups of fish most at risk are the highly valuable salmon and trout of the Pacific Coast and western mountain regions; minnows, suckers and catfishes throughout the continent; darters in the Southeastern United States; and pupfish, livebearers, and goodeids, a large, native fish family in Mexico and the Southwestern United States.

Nearly half of the carp and minnow family and the Percidae (family of darters, perches and their relatives) are in jeopardy. Fish families important for sport or commercial fisheries also had many populations at risk. More than 60 percent of the salmon and trout had at least one population or subspecies in trouble, while 22 percent of sunfishes -- which includes the well-known species such as black bass, bluegill and rock bass -- were listed. Even one of the most popular
'/>"/>

Contact: Catherine Puckett
cpuckett@usgs.gov
352-264-3532
United States Geological Survey
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Nitrogen -- the silent species eliminator
2. Robot vehicle surveys deep sea off Pacific Northwest
3. Scientists break record by finding northernmost hydrothermal vent field
4. Fossils and layers: Solving the terrane puzzle of the North American cordillera
5. New report looks at the state of the North American environment
6. New study finds most North Pacific humpback whale populations rebounding
7. UTSA hosts North American Energy Summit May 1-2
8. NASA satellite measures pollution from east Asia to North America
9. Rare North Island brown kiwi hatches at the Smithsonians National Zoo
10. Typical North American diet is deficient in omega-3 fatty acids
11. GSA Northeastern Section to meet in Buffalo this month
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/28/2014)... from Washington, Oregon, northern California, and Alaska totaled 515 ... of 2014, an increase of more than 10 percent ... Forest Service,s Pacific Northwest Research Station reported today. During ... 4 percent to 247 million board feet. , The ... than 5 percent to $390 million in the same ...
(Date:8/27/2014)... MADISON, Wis. The mechanical force that a single fungal ... seem vanishingly small, but it plays a heavy role in ... biology. In fact, it may not be too much of ... onto land without the ability to respond to the touch ... Jean-Michel An, a professor of agronomy at the University of ...
(Date:8/27/2014)... August 27, 2014. Using functional near infrared spectroscopy ... activation patterns between people with multiple sclerosis (MS) ... study in which brain activation was studied using ... article, "Neuroimaging and cognition using functional near infrared ... on June 11 by Brain Imaging and ...
Breaking Biology News(10 mins):West coast log exports up, lumber exports down in second quarter of 2014 2A touching story: The ancient conversation between plants, fungi and bacteria 2A touching story: The ancient conversation between plants, fungi and bacteria 3Kessler Foundation researchers publish first study of brain activation in MS using fNIRS 2
... 03 January 2008 Elsevier announced today that it ... Gas Science and Engineering. The journal will be published ... rapidly expanding area of natural gas science and engineering. ... The Journal of Natural Gas Science and Engineering will ...
... smell more alluring than you really are is a fairly ... However, it is a matter of life and death for ... believing them to be one of the ants own larvae. ... researchers from the Centre for Social Evolution (CSE) at the ...
... study published in this weeks PLoS Medicine, researchers have ... be causing the infectious eye disease trachoma. Six million ... unhygienic conditions in the developing world are blind ... infected. The possibility that multiple strains of the Chlamydiceae ...
Cached Biology News:Elsevier launches new journal: Journal of Natural Gas Science and Engineering 2Smell-wars between butterflies and ants 2Multiple species of bacteria may cause trachoma: Implications for treatment 2
(Date:8/27/2014)... Flagship Biosciences LLC, a leading provider of ... and medical device industries, has announced a laboratory and ... has consolidated its histology and tissue analysis operations from ... just north of Denver. The new addresses are: ... Suite 100, Westminster, CO 80021 , Tissue Image Analysis ...
(Date:8/27/2014)... 2014  ARCH Venture Partners, one of the ... development of seed and early-stage advanced technology companies, ... with more than $400 million in subscriptions. ARCH ... target by more than $150 million. ... and potential of our approach to finding and ...
(Date:8/27/2014)... BIOEQUA, an innovative line of skin care ... handheld spray, has made its EQUA ESSENTIAL line available ... brand began with an unexpected discovery in an emergency ... that the application of nanospray technology allowed for liquid ... to skin's basal layer. This resulted in immediate absorption ...
(Date:8/27/2014)... 2014 Remcom announces an update to ... features for the biomedical industry. The central biomedical ... Sensor, exclusive to the Bio-Pro version of the software. ... developed to calculate the biological effects of electromagnetic fields. ... to all versions to expand engineers’ post-processing options. , ...
Breaking Biology Technology:Flagship Biosciences Announces Relocation and Expansion 2Latest ARCH Venture Partners Fund Closes Above $400 Million 2Latest ARCH Venture Partners Fund Closes Above $400 Million 3BIOEQUA'S EQUA ESSENTIAL Product Line Redefines Skin Care & Now Available in America 2Remcom Announces Enhanced Biological Thermal Sensor and Other Biomedical Features in XFdtd EM Simulation Software Update 2Remcom Announces Enhanced Biological Thermal Sensor and Other Biomedical Features in XFdtd EM Simulation Software Update 3
... announced,today that the U.S. Food and Drug Administration (FDA) ... Focused Ultrasound,(MRgFUS) system for the treatment of women with ... allows,physicians to treat up to 100% of the fibroid ... half the fibroid tissue. , ...
... April 7 /PRNewswire-Asia-FirstCall/ -- China Sky One,Medical, Inc. ... CSKI ), a,leading fully integrated pharmaceutical ... China ("PRC"), today,announced that an extension notification filed ... Report on Form 10-K on March 31, 2009, ...
... The American Filtration and Separations Society (AFS) will be holding ... in Bloomington Minnesota. , ... Minneapolis, MN (PRWEB) April ... (AFS) will be holding its 22nd Annual Conference, May 4-7, 2009 ...
Cached Biology Technology:FDA Approves Label Change for Non-Invasive Fibroid Treatment 2FDA Approves Label Change for Non-Invasive Fibroid Treatment 3China Sky One Medical, Inc. Provides Update on Filing Form 10-K 2China Sky One Medical, Inc. Provides Update on Filing Form 10-K 3University of Minnesota Professor Dr. David Pui to Speak at American Filtration and Separation Society Conference 2University of Minnesota Professor Dr. David Pui to Speak at American Filtration and Separation Society Conference 3
... be upgraded to the GenePix Autoloader 4200AL. ... and saves results for up to 36 ... the batch is complete. Line-by-line autofocus ensures ... GenePix Pro gives you complete flexibility to ...
... Maximize the value of your microarray data ... support you need from consultation to extensive ... date methods. Utilize our expertise in combination ... from your own microarray experiments., ,Normalization and ...
... the value of your microarray data ... the support you need from consultation ... most up to date methods. Utilize ... Gene Expression Profiling Service or from ...
... This CLS number is a ... easily match Cornings product number. ... please order under the old ... customer service for assistance. ...
Biology Products: