Navigation Links
River damming leads to dramatic decline in native fish numbers
Date:7/9/2008

Damming of the Colorado River over the last century, alongside introduction of game fish species, has led to an extensive decline in numbers of native fish whilst introduced species have flourished. Scientists have found that physical changes which occur to a river when it is dammed have had an adverse effect only on native fish, due to differences in their life histories. Armed with this knowledge, they have made proposals to management agencies, which, if implemented, could reverse the loss of native species not only in the Colorado but on a country or even world-wide scale. Dr Alice Gibb from Northern Arizona University will be presenting her research on Thursday 10th July at the Society for Experimental Biology's Annual Meeting in Marseille [Session A4].

Dr Gibb and her colleagues believe that differences in the early life of native and introduced species can account for the recent changes in population dynamics. They measured 'escape responses' of both native and introduced species to predators under laboratory conditions. "Our studies have shown that the larvae of native fish, which are usually less developed when they hatch, have a poorer escape response, due to their lack of adult swimming appendages. In contrast, many introduced species can prey upon the native species, and produce larvae that are more morphologically mature at hatching and thus may themselves be better equipped to escape predation," she explains.

Changes that damming has imposed on the Colorado River environment have amplified the disadvantage that native species face, according to Dr Gibb. "Historically, the less-developed native larvae had a natural refuge from predators due to sediment suspended in the water, and water turbulence increased the ability of larvae to encounter the plankton that they feed on. Fish also rapidly outgrew their period of high-vulnerability to predation due to higher water temperatures," she declares. "Damming the Colorado Riv
'/>"/>

Contact: Holly Astley
hma25@cam.ac.uk
44-779-285-5259
Society for Experimental Biology
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Baiji Dolphin previously thought extinct spotted in the Yangtze River
2. UC Riverside biologist receives prestigious MacArthur Fellowship
3. International team of scientists warns of climate changes impact on global river flow
4. Stronger EPA leadership needed to improve water quality in Mississippi River
5. UC-Riverside partners with Chinese university to address Chinas environmental problems
6. X-effect: female chromosome confirmed a prime driver of speciation
7. Tiny fish can yield big clues to Delaware River health
8. Scientists from the UGR prove that rivers do not act as barriers for groundwater flow
9. More comprehensive analysis of Klamath River basin needed to aid decision makers
10. Chemicals used as fire retardants could be harmful, UC-Riverside researchers say
11. LSU, Yale team study agricultural impact on Mississippi River
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
River damming leads to dramatic decline in native fish numbers
(Date:2/11/2015)... , February 11, 2015 ... research report "Access Control Market by Product (Cards and ... Residential, Military and Defense, Government, Industrial, Healthcare, Education) and ... published by MarketsandMarkets, the Access Control Market ... 2020, growing at a CAGR of 10.6% ...
(Date:2/9/2015)... , Feb. 9, 2015  Lintec of America ... methods for carbon nanotube (CNT) macrostructures, including sheets, yarns ... Dallas (UTD). Leveraging the vast industrial resources ... Tokyo, Japan , Lintec of America is forming ... Richardson, TX , focusing on scaling up the ...
(Date:2/5/2015)... , Feb. 5, 2015  Marken is starting ... company and has launched a new marketing campaign to ... Organization (CLO).  The new campaign focuses on First ... protocol and shipments. The first headline in ... aligns Marken,s priorities with its client,s priorities. Marken recognizes ...
Breaking Biology News(10 mins):Access Control Market Worth $10.4 Billion by 2020 2Access Control Market Worth $10.4 Billion by 2020 3Access Control Market Worth $10.4 Billion by 2020 4Lintec announces exclusive license to commercialize innovative carbon nanotube technology from the University of Texas at Dallas 2Lintec announces exclusive license to commercialize innovative carbon nanotube technology from the University of Texas at Dallas 3Lintec announces exclusive license to commercialize innovative carbon nanotube technology from the University of Texas at Dallas 4Marken Launches New Patient-Centric Campaign 2
... A team of Dutch researchers under the leadership of ... They weakened fear memories in human volunteers by administering ... return over the course of time. Top journal ... 2009. Until recently, it was assumed that ...
... CO More than 300 geoscientists will gather 12-13 ... Section of the Geological Society of America. The meeting ... in St. Petersburg, Florida. , Geoscientists from the University ... the meeting along with the USF Geology Alumni Society. ...
... much salt, and a University of Iowa researcher has discovered ... in a better mood. UI psychologist Kim Johnson and ... in sodium chloride, common table salt, they shy away from ... pressing a bar that stimulates a pleasant sensation in their ...
Cached Biology News:An end to fear 2Study suggests salt might be 'nature's antidepressant' 2Study suggests salt might be 'nature's antidepressant' 3
(Date:2/26/2015)... -- S&P Capital IQ (MHFI) announced today that it ... Therapeutics Holdings Inc . MabVax Therapeutics ... focused on the development of vaccine and antibody-based therapies ... cancer. MabVax has discovered a pipeline of human monoclonal ... by patients who have been immunized against targeted cancers. ...
(Date:2/26/2015)... Mass., Feb. 26, 2015   Synageva BioPharma ... biopharmaceutical company developing therapeutic products for rare disorders, ... provided 2015 goals, other key objectives, and financial ... call today at 4:30 p.m. EST to review ... update.  To participate in today,s call by telephone, ...
(Date:2/26/2015)... The Movement for Indefinite Life Extension ... extension technologies and awareness. The event is taking place ... March 21st 2015, in a live Google Hangout broadcast ... Founder of MILE, says, “Our lives are in our ... for Indefinite Life Extension is raising awareness about bio-sciences ...
(Date:2/26/2015)... Feb. 26, 2015 BioEnterprise today announced that ... attracted more than $2 billion in growth funding during ... national investors, strategic sources, state – including the Ohio ... the $2 billion has been raised in the past ... the heels of the BioEnterprise Midwest Healthcare Growth ...
Breaking Biology Technology:S&P Capital IQ Initiates Coverage on MabVax Therapeutics Holdings Inc. in S&P Capital IQ Factual Stock Reports 2S&P Capital IQ Initiates Coverage on MabVax Therapeutics Holdings Inc. in S&P Capital IQ Factual Stock Reports 3S&P Capital IQ Initiates Coverage on MabVax Therapeutics Holdings Inc. in S&P Capital IQ Factual Stock Reports 4S&P Capital IQ Initiates Coverage on MabVax Therapeutics Holdings Inc. in S&P Capital IQ Factual Stock Reports 5Synageva BioPharma Reports 2014 Full Year Financial Results 2Synageva BioPharma Reports 2014 Full Year Financial Results 3Synageva BioPharma Reports 2014 Full Year Financial Results 4Synageva BioPharma Reports 2014 Full Year Financial Results 5Synageva BioPharma Reports 2014 Full Year Financial Results 6Synageva BioPharma Reports 2014 Full Year Financial Results 7Synageva BioPharma Reports 2014 Full Year Financial Results 8Synageva BioPharma Reports 2014 Full Year Financial Results 9Indefinite Life Extension Activists Organize Online Demonstration 2Indefinite Life Extension Activists Organize Online Demonstration 3More Than $2 Billion Invested in Northeast Ohio Bioscience Start-Up Companies Since 2002 2More Than $2 Billion Invested in Northeast Ohio Bioscience Start-Up Companies Since 2002 3More Than $2 Billion Invested in Northeast Ohio Bioscience Start-Up Companies Since 2002 4
... (NASDAQ: GPRO ) announced today that the Company ... April 28, 2011 at approximately 4:00 pm Eastern Time (ET). ... management at 4:30 pm ET.   The conference ... the investors section of the Company,s web site at ...
... Proteon Therapeutics, Inc. has initiated enrollment in a ... in chronic kidney disease (CKD) patients undergoing surgery for ... study follows successful completion of a 66-patient, double-blind, placebo-controlled ... completed enrollment in July 2010. "Our lead ...
... Texas, April 14, 2011 The Wound Institute today ... dynamic reciprocity at the combined meeting of the Symposium ... Society (WHS) being held in Dallas at the Gaylord ... Presenting faculty are Dr. Ira M. Herman, tenured Professor ...
Cached Biology Technology:Gen-Probe Announces Webcast of First Quarter 2011 Earnings Conference Call 2Proteon Therapeutics Initiates Patient Enrollment in Phase 2 Clinical Study of PRT-201 in Hemodialysis Patients 2The Wound Institute® to Feature Educational Forum on Dynamic Reciprocity During the Symposium on Advanced Wound Care and the Wound Healing Society Annual Meeting 2The Wound Institute® to Feature Educational Forum on Dynamic Reciprocity During the Symposium on Advanced Wound Care and the Wound Healing Society Annual Meeting 3The Wound Institute® to Feature Educational Forum on Dynamic Reciprocity During the Symposium on Advanced Wound Care and the Wound Healing Society Annual Meeting 4
... provides the reagents to efficiently differentiate ... myotubes. By efficiently promoting myogenic differentiation, ... in studies examining myogenesis, transcription factor ... muscle cell replacement therapy. By providing ...
... Confocal Imager delivers high resolution CCD confocal ... cost effective optical package that fits on ... scanning, combined with high quantum efficiency CCD ... and recording at up to 100 fps. ...
... Select Tissue Arrays are intended for laboratory ... were fixed in neutral buffered formalin and ... diagnosis was performed by certified pathologists. ... blocks and relocated into a new recipient ...
Metamine is an autonomous data mining tool that extends the capabilities of conventional research teams. It is a proactive agent that searches for significant results buried within the GeNet data rep...
Biology Products: