HOME >> BIOLOGY >> NEWS
New angle needed to get pike out of Lake Davis

Hoping to keep non-native northern pike in Lake Davis from invading the Sacramento-San Joaquin river system, state wildlife managers have electroshocked, poisoned and netted thousands of the fish. Nonetheless, concludes a new UC Davis study, the pike are thriving.

Professor Ted Foin constructed a mathematical model that considered Lake Davis' fish habitat and pike population dynamics to estimate the impact of the removal program on estimated pike population for the next 10 to 100 years.

"The Lake Davis pike population is well-established and likely in the phase of explosive growth," said Foin, a systems ecologist and modeler in the Department of Agronomy and Range Science. "Methods currently in use are having no significant impact on pike population growth. Simply put, the pike population in Lake Davis has grown too large to be controlled by removal."

If the voracious pike (Esox lucius) were to escape over Grizzly Dam or were illegally transplanted by fishermen, they could devastate endangered fish in the Sacramento and San Joaquin rivers and delta, including salmon and the Sacramento splittail.

The California Department of Fish and Game and the Lake Davis Steering Committee are currently considering their next steps. One option is to try again to kill the fish using chemicals. In October 1997, the department put 76,000 gallons of rotenone into the lake to suffocate the pike. But in May 1999, pike were found in the lake again.

Foin said that while the new fish might have been illegally transplanted, they more likely were survivors of the 1997 treatment; some DNA evidence supports the survivor hypothesis.

The next public meeting to discuss the pike problem is Sept. 8 in Portola, in eastern Plumas County. More information: http://www.dfg.ca.gov/northernpike/index.html.


'"/>

Contact: Ted Foin
tcfoin@ucdavis.edu
530-754-7910
University of California - Davis
28-Aug-2003


Page: 1

Related biology news :

1. Natural enemies help scientists untangle tropical forest food webs
2. Sea Grant asking anglers to collect sea lampreys for Lake Champlain study
3. New enzyme tied to tangles in Alzheimers disease
4. Images of tail of protein needed for cell multiplication suggest anticancer drug targets
5. Report outlines steps needed to lessen smallpox threat
6. New national research effort needed to secure clean, adequate water supply in coming decades
7. Better techniques needed to predict earthquake hazards, UC study finds
8. Support needed for elderly breast cancer patients and for independent academic research
9. New understanding of insulins complexities needed to conquer diabetes
10. Ethical guidelines needed before nutrigenomic groceries come to market
11. Stanford researchers isolate protein needed for stem cell maintenance

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:2/14/2017)... , Feb. 14, 2017  Wake Forest Baptist ... as its new chief executive officer (CEO). Freischlag joins ... John D. McConnell , M.D., who last year ... at the Medical Center, after leading it since 2008. ... full scope of Wake Forest Baptist,s academic health system, ...
(Date:2/9/2017)... -- The biomass boiler market report by Transparency Market ... globally in terms of revenue (US$ Mn) based on ... biomass boilers has been segmented on the basis of ... market based on feedstock type, has been segmented into ... crops, urban residues, and others. On the basis of ...
(Date:2/8/2017)... YORK , Feb. 7, 2017 ... Driven largely by the confluence of organizations, desires ... distaste for knowledge-based systems (password and challenge questions), ... industrial, and government systems. The market is driven ... a demarcation between consumer and enterprise uses cases, ...
Breaking Biology News(10 mins):
(Date:2/22/2017)... , Feb. 22, 2017  Aratana Therapeutics, Inc. (NASDAQ: ... and commercialization of innovative biopharmaceutical products for companion animals, will ... at 8:30 a.m. ET to discuss financial results from the ... Interested participants and investors may access the ... ...
(Date:2/22/2017)... Clara, CA (PRWEB) , ... February 22, 2017 , ... ... hosting a free AFM Luncheon for all SPIE attendees and ... Jose, CA, just one block from the San Jose Convention Center. The luncheon ...
(Date:2/22/2017)... , Feb. 22, 2017 Scientists propose ... inflammation and organ damage in Gaucher and maybe other ... risks and lower costs than current therapies. ... Hospital Medical Center , which also included investigators from ... , report their data Feb. 22. The study was ...
(Date:2/22/2017)... ... February 22, 2017 , ... ProMIS ... precision treatments for neurodegenerative diseases, today announced it has issued a scientific white ... is one of a series of commentaries from ProMIS’s scientific team offering insight ...
Breaking Biology Technology:
Cached News: