HOME >> BIOLOGY >> NEWS
Leading lampreys to slaughter: Pheromone for scourge of Great Lakes identified

MINNEAPOLIS / ST. PAUL-For the rats of Hamelin, it was the Pied Piper's tune. For the destructive sea lamprey of the Great Lakes, it's a chemical attractant, or pheromone, released by lamprey larvae living in streambeds. Following the pheromone trail, adults are drawn to streams favorable for spawning. Researchers have long wanted to identify the pheromone so it could be synthesized and used to control the sea lamprey, which laid waste to Great Lakes fisheries of lake trout and other species in the mid-20th century. Now, a team of University of Minnesota researchers has identified the three major components of the pheromone and synthesized the principal one, a novel steroid akin to a shark steroid that possesses anticancer activity. This is the first migratory attractant to be identified in any fish. The work is the cover story for the November issue of Nature Chemical Biology and will be published online in the journal Sunday, Oct. 2.

The lamprey is one of the earliest relics of vertebrate evolution, dating back nearly 400 million years, before the evolution of jaws and bony skeletons. The species parasitizes other fish by attaching with their circular, toothy mouths and sucking the body juices. A single lamprey will feed for about a year, consuming on average 40 pounds of fish. In the Great Lakes, their prey have been commercially valuable species like lake trout and whitefish.

Currently, the Great Lakes Fishery Commission (GLFC) controls lamprey by means of a poison that kills lamprey larvae in streambeds. It also kills every invertebrate it comes in contact with, and sometimes fish. The lampricide is tanker-trucked to streams, some of them in populated areas, in an expensive, labor-intensive and unpopular undertaking. The GLFC is eager to use a synthetic form of the newly found pheromone to replace the poison by luring lamprey to traps and sterilizing the males, the researchers said. Using the pheromone would be environmentally friendly and less
'"/>

Contact: Deane Morrison
morri029@umn.edu
612-624-2346
University of Minnesota
2-Oct-2005


Page: 1 2 3

Related biology news :

1. Leading the fight against food poisoning
2. Leading researchers honored for progress in cancer prevention, detection and treatment
3. Leading drug discovery and biotechnology scientists and experts discuss latest advancements
4. Leading cause of US food-borne illness makes its own pathway through cells
5. Leading scientists elected to EMBO ranks
6. Leading scientists gather to discuss developments in infectious disease research
7. Leading stem cell expert moves to UK
8. Leading breast cancer researcher awarded new lectureship
9. Leading experts confront global burden of chronic disease 8 Dec. at Abelson Science Seminar
10. Leading researchers from Israel and Southern California to present stem cell symposium
11. Leading experts present latest in cancer prevention research

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


(Date:6/25/2020)... Mass. (PRWEB) , ... June 24, 2020 , ... ... of cloud-based enterprise software and software-driven clinical data services that accelerate drug development, ... for low-dose selinexor, an XPO1 inhibitor, in hospitalized patients with severe COVID-19. This ...
(Date:6/23/2020)... ... , ... The field of quantitation of large molecules or proteins has been ... However, the use of mass spectrometry in this field has gained a lot of ... you choose which approach to use (LBA or MS)?” In many cases, either ...
(Date:6/19/2020)... ... ... The director of stem cell biotechnology company Asymmetrex , Dr. James ... industries have easier access to stem cell counting, they will soon make it a ... Day weekend in the U.S., Asymmetrex is offering free tissue stem cell counting at ...
Breaking Biology News(10 mins):
(Date:7/31/2020)... ... 2020 , ... Anomet Products has introduced new custom composite ... with CRM, neurostimulation, vascular, and related devices. , Anomet Medical Clad Wire ... and cost criteria; especially where solid wire is limited. Typical configurations for implantable ...
(Date:7/31/2020)... , ... July 29, 2020 , ... ... of the top radiation centers in 16 countries, has reached its 20th anniversary ... is now in routine use at top universities including University of Pennsylvania, University ...
(Date:7/18/2020)... ... July 16, 2020 , ... After research model surgery and catheter implantation, ... surgery is only the beginning of a successful study, while protecting and accessing the ... Gien, Global Head of Surgery from Envigo in a live webinar ...
(Date:7/18/2020)... ... , ... dicentra , a leading Contract Research Organization ... pleased to announce that Charles Galea has joined its clinical trials division as ... accomplished and results-driven sales executive with over 10 years of expertise in business ...
Breaking Biology Technology:
Cached News: