Navigation Links
MSU sea lamprey research sheds light on how stress hormones evolved
Date:7/19/2010

EAST LANSING, Mich. Michigan State University researchers are the first to identify a stress hormone in the sea lamprey, using the 500 million-year-old species as a model to understand the evolution of the endocrine system.

Corticosteroid hormones control stress response in animals with backbones, including humans. While scientists have learned quite a bit about these so-called stress hormones in most modern animals, little was known about the hormones' earliest forms in prehistoric creatures such as lamprey.

"By identifying 11-deoxycortisol as a stress hormone in lamprey, it allows us to better understand how the endocrine system in vertebrates evolved into the complex systems we see in humans today," explained Weiming Li, professor of fisheries and wildlife who helped lead the project. Li also is a member of the Michigan Agricultural Experiment Station.

The hormone is the only one the researchers have found so far in the lamprey and Li said the researchers are hypothesizing that it may be the only corticosteroid hormone in the lamprey. Humans, in contrast, have more than 30 corticosteroid hormones.

The research is published in the July 19 edition of the Proceedings of the National Academy of Sciences.

Native to the Atlantic Ocean, sea lampreys are invasive species in the Great Lakes. They stay alive by attaching themselves to other fish, such as salmon and trout, and then suck out the fish's body fluids. One sea lamprey can kill 40 or more pounds of fish. The U.S. and Canadian governments spend about $10 million to $15 million per year on lamprey control.

Li led the groundbreaking research that identified the pheromone male lampreys use to attract females to their nests to mate. He has made a synthetic version of the pheromone and is testing its effectiveness as a control for the destructive parasites. While the identification of 11-deoxycortisol likely won't directly help his lamprey control work, Li said this new discovery will bolster understanding on how the fish has successfully adapted since the Paleozoic Era.

"Most jawless animals similar to the lamprey didn't survive into the modern era, so they're not available for us to use as we strive to learn more about how human systems developed," Li said. "The sea lamprey, a survivor, gives us a snapshot of what happened as vertebrates evolved into the animals we know today."

Li and his team plan to continue studying the lamprey, possibly investigating how the endocrine and other body systems became more integrated and successfully adapted to the changing environment.


'/>"/>

Contact: Jamie DePolo
depolo@msu.edu
609-354-8403
Michigan State University
Source:Eurekalert  

Related biology news :

1. Evolution of a contraceptive for sea lamprey
2. Wistar Institute researcher receives New Innovator award from NIH
3. NC State researchers get to root of parasite genome
4. White Mountain Research Station to host climate change conference
5. Stevens awarded $1M for advanced biofuels research
6. Researchers find animal with ability to survive climate change
7. Researchers find an essential gene for forming ears of corn
8. Researchers note differences between people and animals on calorie restriction
9. Researcher working on destruction of chemical weapons
10. Researchers study acoustic communication in deep-sea fish
11. Researchers discover that growing up too fast may mean dying young in honey bees
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
MSU sea lamprey research sheds light on how stress hormones evolved
(Date:6/21/2016)... , June 21, 2016 NuData ... the new role of principal product architect and ... the director of customer development. Both will report ... technical officer. The moves reflect NuData,s strategic growth ... response to high customer demand and customer focus ...
(Date:6/9/2016)... 2016 Paris Police Prefecture ... security solution to ensure the safety of people and operations ... the major tournament Teleste, an international technology group ... announced today that its video security solution will be utilised ... up public safety across the country. The system roll-out is ...
(Date:6/2/2016)... , June 2, 2016 Perimeter ... Platforms, Unmanned Systems, Physical Infrastructure, Support & Other Service  ... visiongain offers comprehensive analysis of the global ... market will generate revenues of $17.98 billion in 2016. ... DVTEL Inc, a leader in software and hardware technologies ...
Breaking Biology News(10 mins):
(Date:12/2/2016)... 2016 Research and Markets has announced ... Markets and Companies" to their offering. ... , , ... and biotechnology industries is anticipated. Nanotechnology will be applied at ... delivery to diagnostic applications in clinical trials. Many of the ...
(Date:12/2/2016)... Raleigh, NC (PRWEB) , ... December 01, 2016 ... ... the US Computational Science Symposium (CSS) and the popularity of US Single Day ... will take place in early Summer 2018, in Raleigh, NC. Topics of the ...
(Date:12/2/2016)... (PRWEB) , ... December 02, ... ... (ETC), a consortium of pharmaceutical and biotechnology companies dedicated to collaboratively developing ... companies interested in supplying a vendor-supported, portable online UHPLC, with robust, probe-based ...
(Date:12/2/2016)... /PRNewswire/ - bioLytical Laboratories, a world leader in rapid infectious disease tests, introduced the ... Pharmaceutical Association members. (Photo: http://photos.prnewswire.com/prnh/20161201/444905 ) ... ... , , bioLytical ... (KPA) to introduce the INSTI HIV Self Test to 350 pharmacy representatives in ...
Breaking Biology Technology: