Navigation Links
Invasives threaten salmon in Pacific Northwest
Date:3/1/2009

Many native fishes in the Pacific Northwest are threatened or endangered, notably salmonids, and hundreds of millions of dollars are expended annually on researching their populations and on amelioration efforts. Most of the attention and funding have been directed toward to the impacts of habitat alteration, hatcheries, harvest, and the hydrosystemthe "all H's." A study published in the March 2009 issue of BioScience concludes, however, that nonindigenous species, notably invasive fishes, appear to pose at least as much of a threat to native salmonids as the all H's, principally through predation.

The study, by Beth L. Sanderson of the Northwest Fisheries Science Center in Seattle, Washington and two colleagues, made use of a spatially explicit database that identified the presence of invasive species in roughly 1800-square-kilometer, hydrologically connected areas throughout Washington, Oregon, and Idaho. The number of invasive species in each area ranged between 86 and 486, the majority being plants and fish.

Sanderson and colleagues assembled reports of predation by six nonindigenous fish species: catfish, black and white crappie, largemouth bass, smallmouth bass, walleye, and yellow perch. Hundreds of thousands to millions of juvenile salmonids were being consumed by these species at just a handful of sites, and for some of the species, salmonids constituted a large fraction of their diet. Yet despite the clear evidence of a substantial impact of invasive species on economically important salmonids, only a very small percentage of research funding is devoted to the potential harms to salmon resulting from invasives.


'/>"/>

Contact: Jennifer Williams
jwilliams@aibs.org
202-628-1500 x209
American Institute of Biological Sciences
Source:Eurekalert

Page: 1

Related biology news :

1. Lake Michigan fish populations threatened by decline of tiny creature
2. One-fifth of fossil-fuel emissions absorbed by threatened forests
3. States expand newborn screening for life-threatening disorders
4. Dealing with taxonomic uncertainty for threatened and endangered species
5. Global warming threatens Antarctic sea life
6. Holy guacamole: invasive beetle threatens Floridas avocados
7. Researchers to use K-States BSL-3 Lab for $1 million study of fungus threatening wheat crops
8. Overfishing threatens European bluefin tuna
9. Revealing the evolutionary history of threatened sea turtles
10. Global warming threatens Australias iconic kangaroos
11. Tropical rainforest and mountain species may be threatened by global warming
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/4/2017)... -- For the thousands of attendees at this year,s International Consumer Electronics Show ... biometric measurement devices and services, will be featuring its new line of ... Medical,s special CES Exhibit Suite , the new upper arm and ... WellnessConnected product platform.  Continue ... ...
(Date:12/22/2016)... Calif. , Dec. 20, 2016  As part of ... 23andMe, the leading personal genetics company, recently released its latest ... . The book focuses on the topics of inheritance ... Generation Science Standards (NGSS) taught in elementary school classrooms in ... in a series by illustrator Ariana Killoran , whose ...
(Date:12/20/2016)... 2016   Valencell , the leading innovator ... STMicroelectronics (NYSE: STM), a global semiconductor leader serving ... today the launch of a new, highly accurate ... includes ST,s compact SensorTile turnkey multi-sensor ... sensor system. Together, SensorTile and Benchmark deliver the ...
Breaking Biology News(10 mins):
(Date:1/23/2017)... FORT LAUDERDALE, Fl (PRWEB) , ... January 23, ... ... Commission Accredited venture-backed teleradiology and telemedicine company announces significant growth last year adding ... customers include Veterans Authority and US Army medical centers as well as one ...
(Date:1/23/2017)... ... January 23, 2017 , ... ... appointed Vice President, Preclinical Safety and Senior Director, Safety Pharmacology. Dr. Thomas ... India. , Dr. Thomas’ career as an academic and industry preclinical drug ...
(Date:1/21/2017)... ... January 20, 2017 , ... Nipro Corporation (Osaka, Japan) and Transonic Systems ... Nipro will receive exclusive marketing and sales rights for all non-OEM Transonic products in ... patients in Japan, the new Nipro - Transonic JV is a natural next step ...
(Date:1/21/2017)... Jan. 21, 2017   Boston Biomedical , an ... to target cancer stemness pathways, today presented data from ... at the 2017 American Society of Clinical Oncology (ASCO) ... . In a Phase Ib/II study ... to inhibit cancer stemness pathways by targeting STAT3 – ...
Breaking Biology Technology: