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  • larval sea
  • The extensive larval mapping project and estimate of the larval sea lamprey population were completed. (glfc.org)
  • A pilot study was successfully completed in 1992 which determined the feasibility of using a deepwater electroshocker and global positioning system equipment to take spatially referenced samples of the larval sea lamprey population in the St. Marys River and to map larval population density. (glfc.org)
  • streams
  • By blocking certain streams with these chemical dams, sea lampreys can be steered away from environmentally sensitive areas and into waterways where pesticides could be used more effectively to eliminate a larger, more concentrated population of sea lampreys. (weeklyworldnews.com)
  • zoology
  • In zoology, lampreys are not considered to be true fish because of their vastly different morphology and physiology. (nilesbio.com)
  • resembles
  • The sea lamprey resembles an eel and feeds off of larger fish by attaching itself to the side of the fish. (reference.com)
  • An ancient fish that still resembles fossils that are 360 million years old, the lamprey lacks a sympathetic nervous system, a spleen, and scales. (encyclopedia.com)
  • dams
  • Threats to Pacific lamprey within California may include dams, stream degradation, poor water quality, and impacts of climate change. (calfish.org)
  • Wagner
  • ROBINSON: Michael Wagner is a Michigan State University researcher and is trying to manipulate lamprey by tinkering with nature. (npr.org)
  • Wagner says lamprey are attracted to the scent of their own larva and repelled by the scent of their dead brethren - really repelled. (npr.org)
  • ROBINSON: So now Michael Wagner is working in this watershed of more than 400 tributaries full of lamprey larva. (npr.org)
  • control
  • Active control programs to control lampreys are undergoing modifications due to concerns of drinking water quality in some areas. (wikipedia.org)
  • Charge is to develop a strategy for sustainable sea lamprey control on the St. Marys River that includes an integrated program of options that minimize costs and environmental impacts, while maximizing suppression of transformer production from the river over the long term. (glfc.org)
  • The unique aspect of this interaction suggests that there are compounds that can bind specifically to the lamprey estrogen receptor, but not to estrogen receptors in other animals," said Baker, adding that some of these compounds could interfere with estrogen action and act as contraceptives in female lamprey, providing a method to control their numbers. (biologynews.net)
  • Sea lamprey control is one area where we have achieved substantial success. (umn.edu)
  • fish
  • Most fish can survive a sea lamprey attack but will be left with a circular wound. (reference.com)
  • When the calls started coming into the Alaska Department of Fish and Game last summer, biologists surmised that the fish had fallen out of the mouths of hungry birds taking advantage of a swarm of lampreys returning to the Chena River to lay their eggs. (uaf.edu)
  • Direct Predation - Sea lampreys attach themselves to other fish and suck on their blood and body fluids. (lake-link.com)
  • Ecological Impacts - One sea lamprey can upset an ecosystem and food chain by eating an estimated 40 pounds of fish or more in its lifetime. (lake-link.com)
  • Multiply that times 22,000 lamprey found in just one river and you have a lot of dead fish. (lake-link.com)
  • Lampreys do not have scales like fish, but rather have a rubber textured skin that secrets a kind of mucus that makes the animal exceptionally slippery. (reference.com)
  • Sea lamprey are notorious for latching onto other fish and literally sucking the life out of them. (npr.org)
  • Sea lampreys are so destructive that, under some conditions, only one out of seven fish attacked will survive. (umn.edu)
  • circular
  • The lampreys are so called because they attach themselves with their circular mouths to rocks and stones , whence they are also called rocksuckers. (biology-online.org)
  • Biology
  • To accomplish this, Baker - along with David Chang, student in the UC San Diego Department of Biology, and Charlie Chandsawangbhuwana, graduate student of Bioengineering in UC San Diego's Jacobs School of Engineering - constructed a 3-D model of the structure of the lamprey estrogen receptor. (biologynews.net)
  • Superior
  • Niagara Falls acted as a natural barrier preventing sea lamprey movement to Lakes Erie, Huron, Michigan, and Superior. (umn.edu)
  • known
  • Not much is known about lampreys because they spend so much of their life out of sight. (uaf.edu)
  • a technique known as the Sterile-Male-Release that reduces the success of sea lamprey spawning and trapping. (lake-link.com)