Navigation Links
Changing sexes on the sea floor
Date:2/19/2009

Trees do it. Bees do it. Even environmentally stressed fish do it. But Prof. Yossi Loya from Tel Aviv University's Department of Zoology is the first in the world to discover that Japanese sea corals engage in "sex switching" too.

His research may provide the key to the survival of fragile sea corals ― essential to all life in the ocean ― currently threatened by global warming.

In times of stress like extreme hot spells, the female mushroom coral (known as a fungiid coral) switches its sex so that most of the population becomes male. The advantage of doing so, says the world-renowned coral reef researcher, is that male corals can more readily cope with stress when resources are limited. Apparently, when times get tough, nature sends in the boys.

"We believe, as with orchids and some trees, sex change in corals increases their overall fitness, reinforcing the important role of reproductive plasticity in determining their evolutionary success," says Prof. Loya, whose findings recently appeared in the Proceedings of the Royal Society B.

The Will to Fight and Survive

"One of the evolutionary strategies that some corals use to survive seems to be their ability to change from female to male," says Prof. Loya. "As males, they can pass through the bad years, then, when circumstances become more favorable, change back to overt females. Being a female takes more energy. And having the ability to change gender periodically enables a species to maximize its reproductive effort."

Corals, though a part of the animal kingdom, can act like plants. Both are sedentary life forms, unable to move when times get tough.

In stressful environmental conditions, male corals can "ride out the storm," so to speak, says Prof. Loya. "Males are less expensive in the evolutionary sense to maintain. They are cheaper in terms of their gonads and the energy needed to maintain their bodies," he adds.<
'/>"/>

Contact: George Hunka
ghunka@aftau.org
212-742-9070
American Friends of Tel Aviv University
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Changing the global dietary environment
2. Global deal fuels QUTs world-changing research
3. Changing environment organizes genetic structure
4. Agriculture is changing the chemistry of the Mississippi River
5. Climate changing gas from some surprising microbial liaisons
6. Warming climate is changing life on global scale, says new study
7. The drivers of tropical deforestation are changing, say scientists
8. Himalaya -- Changing Landscapes photo exhibition draws attention to the impacts of climate change
9. Fitness in a changing world
10. Global warming is changing organic matter in soil
11. Biogeography, changing climates and niche evolution
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Changing sexes on the sea floor
(Date:7/24/2014)... effects on different species of fish, according to ... and Exeter which tested fish anti-predator behaviour. ... seagull predator model when exposed to additional noise, ... , Lead author Dr Irene Voellmy of ... in many aquatic environments have increased substantially during ...
(Date:7/24/2014)... Some sticky research out of York University shows a ... of toxic grass fungus: moose saliva (yes moose saliva). ... , "Ungulate saliva inhibits a grassendophyte mutualism" shows that ... grass (which hosts a fungus called epichlo festucae that ... and less toxicity. , "Plants have evolved defense mechanisms ...
(Date:7/24/2014)... a low vision specialist at The University of Texas ... been awarded a grant to help Harris County residents ... or surgery. , Even with corrective lenses, many people ... there are a variety of low vision devices, such ... their vision loss. , Iyer is using the three-year, ...
Breaking Biology News(10 mins):Moose drool inhibits growth of toxic fungus: York U research 2UTHealth Dr. Bhavani Iyer awarded low vision grant 2
... for their hallucinogenic properties. Until now, less has been ... be classified in the fungal Tree of Life. New ... fungi that has wide recreational use and is currently ... In the 19th century, the discovery of hallucinogenic ...
... There was bad news, then good news from ... first study, they learned that frozen broccoli lacks the ... broccoli. But a second study demonstrated how the food ... benefits. "We discovered a technique that companies can ...
... carbon per year from wind erosion and dust storms affecting ... research.,Top soil is rich in nutrients and carbon but is ... Dawn, in Sydney in 2009. When wind lifts ... location of soil carbon. Some carbon falls ...
Cached Biology News:Family matters: Evolutionary relationships among species of 'magic' mushrooms shed light on fungi 2Illinois scientists put cancer-fighting power back into frozen broccoli 2Soil carbon 'blowing in the wind' 2
(Date:7/25/2014)... 25, 2014 Amgen (NASDAQ: AMGN ... a $0.61 per share dividend for the third quarter ... 5, 2014, to all stockholders of record as of ... About Amgen Amgen is committed to unlocking ... illnesses by discovering, developing, manufacturing and delivering innovative human ...
(Date:7/25/2014)... Diego, CA (PRWEB) July 25, 2014 WABC ... For Your Pet with Lorry Young will be hosting ... to talk about stem cell therapy in pets. Dr. ... the benefits of stem cell therapy for pets suffering from ... moving the Regenerative Veterinary Medicine industry forward. , Young has ...
(Date:7/25/2014)... Muncie, IN (PRWEB) July 25, 2014 ... Administration (FAA) has granted a 60-day extension for the ... of the Special Rule for Model Aircraft established by ... Act of 2012. The 60-day extension establishes the new ... the United States Department of Transportation/FAA notice published in ...
(Date:7/24/2014)... MESA, Calif. , July 24, 2014  Now ... close to home. Rehealth Regenerative Therapies , located ... athletes and other physically active people a new health ... Regardless of age, countless patients suffer from ... sport activities, such as muscle tears, torn rotator cuff, ...
Breaking Biology Technology:Amgen Announces 2014 Third Quarter Dividend 2Amgen Announces 2014 Third Quarter Dividend 3Robert J. Harman, DVM, Founder and CEO of Vet-Stem, Inc. to Join New York Radio Host Lorry Young in Upcoming Episode of A “Paws” For Your Pet 2Robert J. Harman, DVM, Founder and CEO of Vet-Stem, Inc. to Join New York Radio Host Lorry Young in Upcoming Episode of A “Paws” For Your Pet 3FAA Grants Comment Extension at the Request of AMA 2Stem Cells In Sports Injuries, Joints And Muscular Pain 2Stem Cells In Sports Injuries, Joints And Muscular Pain 3
... billions of tons of soil from the earth,s surface. ... amounts of suspended sediment. According to the U.S. Environmental ... source pollution in the environment. , While the mechanism ... and wave forces breaking apart particles in fact, ...
... Insurers, VIRGINIA BEACH, Va., Oct. 30, 2008 ... of America,s Best Places to Work,In Healthcare -- and ... a,survey conducted by Modern Healthcare magazine., The survey, ... Modern,Healthcare, was open to all American hospitals, medical practices ...
... Inc.,(OTC Bulletin Board: AVXT) (the "Company") today announced ... loan financing pursuant to a Convertible Note,and Warrant ... Convertible,Note and Warrant Purchase Agreement (collectively the "Agreement").,Pursuant ... notes,(the "Notes") in the aggregate principal amount of ...
Cached Biology Technology:Virginia Tech engineers identify conditions that initiate erosion 2Virginia Tech engineers identify conditions that initiate erosion 3AMERIGROUP Corporation Named One of Best Places to Work in Healthcare 2AVAX Technologies, Inc. Announces Closing of Bridge Loan Financing 2
... is the ideal CO2 incubator for cell ... or embryos at or near body temperature. ... everything needed to protect and grow your ... stable incubation conditions ensure optimum culture growth. ...
... DNA and RNA endonucleolytically to yield ... DNA:RNA or RNA:RNA) are resistant to ... of enzyme (1). The enzyme is ... double-stranded DNA (2), for selective cleavage ...
... The Rapid DNA Ligation ... or blunt-end DNA fragments in ... C. Depending on the ... DNA concentration) or concatemeric (high ...
...
Biology Products: