HOME >> BIOLOGY >> NEWS
European common frog found to use novel mating strategy

Berkeley -- One of Europe's most common backyard frogs has been keeping a secret that, despite centuries of study and thousands of published papers, has only now been discovered in ponds in the Pyrenees.

The European common frog, Rana temporaria, has long been thought to have a straightforward breeding strategy -- one lucky male grabs the female and fertilizes her eggs as soon as she releases them into the water. End of story.

But that's not the end of the story, according to Spanish researcher David R. Vieites, now a postdoctoral fellow at the University of California, Berkeley. In high-altitude ponds in the Pyrenees, on the border between Spain and France, so many males are vying for fatherhood that they pirate the egg clutches after they're laid. Grasping them as they would a female, they release sperm in the floating clutches, often successfully fertilizing the eggs left unfertilized after the initial encounter. In one pond studied, 84 percent of all clutches had been fertilized by more than one male.

In addition, numerous male frogs typically gang around the egg clutch for their turn at fertilization. According to Vieites, genetic analysis of the eggs in a single clutch shows fertilization by as many as four separate males, including the male that actually had embraced the female.

"This is the first example of such a complex mating behavior in amphibians undergoing external fertilization," Vieites said. "Because of a population excess of males, the males found a system to reproduce without the female."

He and colleagues in Spain, Germany and The Netherlands report their findings in the Sept. 16 issue of Nature.

Vieites also noticed a possible female response to this so-called "clutch piracy." Many females delayed release of their eggs until no other males were around, often floating around for several days with a male onboard before releasing eggs. Vieites noticed, too, that some females were releasing thei
'"/>

Contact: Robert Sanders
rls@pa.urel.berkeley.edu
510-643-6998
University of California - Berkeley
15-Sep-2004


Page: 1 2 3 4

Related biology news :

1. Zoonotic diseases - European scientists unite to fight diseases
2. Second call for proposals for the European Young Investigator Award
3. Common call for action on European Research Council (ERC)
4. EURYI Award given for the first time to 25 young European researchers
5. European researchers tackle mitosis
6. Key principles for the foundation of a European Research Council (ERC)
7. EC boosts European electron microscopy research
8. Plants for the future: A European vision for plant biotechnology towards 2025
9. European Commission approves Herceptin + Taxotere as 1st-line therapy in HER2-positive breast cancer
10. Limited climate tracking in European trees despite 10,000 years of postglacial warmth
11. ESA consults European science community on candidate Earth Explorer missions

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


(Date:10/22/2019)... ... October 22, 2019 , ... Greenberg Traurig, LLP’s global ... Deal Making in the Life Sciences Sector,” with German biotech strategy consulting firm, Catenion. ... at Greenberg Traurig’s Tokyo office . , Speakers from Greenberg Traurig and Catenion ...
(Date:10/17/2019)... (PRWEB) , ... October 15, 2019 , ... ... is pleased to announce it made its first appearance on the Houston Business ... growth of 56 percent. , With corporate headquarters in Houston, Modality Solutions ...
(Date:10/15/2019)... ... October 14, 2019 , ... Erchonia, ... today announces its upcoming Business Meeting in Orlando & 18th Annual Golf Tournament. ... in Orlando, near Erchonia’s headquarters in Melbourne. , The first day will kick ...
Breaking Biology News(10 mins):
(Date:9/24/2019)... , ... September 24, 2019 , ... ... cell company, has completed training and site qualification for clinical trial sites and ... recruitment and screening of potential clinical trial participants. , Clinical trial sites are ...
(Date:9/24/2019)... ... ... In the past three years, the National Science Foundation (NSF) has awarded ... of Mines & Technology that expands human understanding of the microbial world. The ... and yet strong layer which is commonly known as a biofilm. , The broad ...
(Date:9/17/2019)... ... 17, 2019 , ... Catalent, a global leader in clinical ... Asia Pacific (APAC) will present at the upcoming 3rd Annual Accelerating Clinical Trials ... On Thursday, Sept. 26, at 10:10 a.m., Ms. Delaney will present “Singapore: APAC’s ...
(Date:9/17/2019)... ... September 17, 2019 , ... Geneticure, Inc., a ... announces today that the U.S. Patent and Trademark Office (USPTO) and European Patent ... drug class recommendations for hypertension treatment. , The patent applies to Geneticure’s ...
Breaking Biology Technology:
Cached News: