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:12/14/2018)... ... December 14, 2018 , ... uBiome, the leader in ... for Microbiome-Derived Diagnostics and Therapeutics” by the US Patent and Trademark Office on ... is an invention by uBiome collaborators Dr. Zachary Apte, Dr. Daniel Almonacid, Dr. ...
(Date:12/13/2018)... ... 2018 , ... Illumina, Kaiser Permanente, ResMed and Aetna were just a few ... and cooking events company has hosted an impressive guest list of Fortune 500 businesses, ... Each group who visits receives a completely customized experience, right down to the menu ...
(Date:12/10/2018)... , ... December 10, 2018 , ... ... strategic alliance to advance their shared goal of accelerating the development of the ... scale-up bioprocess systems to TRT’s core technology around human umbilical cord perivascular cells ...
Breaking Biology News(10 mins):
(Date:1/10/2019)... ... January 08, 2019 , ... ... announced today that SAGICO will be represented at the 37th Annual J.P. ... Healthcare Conference is the largest and most informative healthcare investment symposium in ...
(Date:1/8/2019)... ... January 07, 2019 , ... ... members into Noninvasix. This represents the second investment AngelMD has made into Noninvasix ... morbidity, Noninvasix is developing a patient monitor to directly, accurately, and noninvasively measure ...
(Date:1/7/2019)... ... January 07, 2019 , ... Kainos Medicine Inc. today ... drug candidate, code-named "KM-819." KM-819 is an orally active small molecule that ... South Korea. , This Phase 1 randomized, double-blind, placebo-controlled dose-escalation study was ...
(Date:1/4/2019)... ... January 01, 2019 , ... uBiome, the ... World Economic Forum Annual Meeting January 22-25, 2019 held in Davos-Klosters, Switzerland following ... World Economic Forum Annual Meeting brings together leaders of global society–the heads and ...
Breaking Biology Technology:
Cached News: