HOME >> BIOLOGY >> NEWS
Bird Dads Suffer Infidelity But Bring Up Baby

Seduced and abandoned
Single-parent bird dads suffer female infidelity, then get the job of bringing up baby, Cornell DNA study shows


ITHACA, N.Y. -- Seduced by a domineering, two-timing female and then largely abandoned to raise young that aren't his own, the male wattled jacana would seem to be a loser in the genetic lottery. But the tropical shorebird has some consolations:
  • At least some of the young he cares for carry his genes.
  • Sometimes other males raise young that he has sired.
  • Love lost is better than no love at all.

Reporting tomorrow (Dec. 22, 1998) in the Proceedings of the Royal Society of London Series, Cornell University biologists Stephen T. Emlen and Peter H. Wrege, and Michael S. Webster of the University of Buffalo explain the costs and benefits behind one of the animal kingdom's most extreme examples of sex-role reversal and cuckoldry.

The scientists observed wattled jacanas (scientific name Jacana jacana) over a six-year period on Panama's Chagres River, witnessing more than 1,400 noisy copulations between dominant females and much smaller males. The males were left for weeks to incubate eggs and then, as single parents, to raise chicks of uncertain paternity for two more months.

The females, meanwhile, were copulating with other males. Jacanas are practically unique among vertebrate animals, in that females pair simultaneously with a harem of males (a mating system called polyandry) and the males perform essentially all of the care of the young.

The biologists made DNA fingerprints of 465 adult and juvenile birds. Genetic fingerprinting told the scientists which jacana chicks were carrying the nesting males' genes. Specifically:

-- More than 40 percent of jacana broods that males were tending included chicks from a different male, in cases where other males were available in the harem. Those nonrelated chi
'"/>

Contact: Roger Segelken
hrs2@cornell.edu
607-255-9736
Cornell University News Service
21-Dec-1998


Page: 1 2 3

Related biology news :

1. House Dust Mite Busters No Good For Asthma Sufferers
2. Mice Lacking The Pax8 Gene Suffer From Hypothyroidism And Fail To FormThyroxin-Producing Cells Of The Thyroid Gland
3. Genetics Debate Suffers From Misinterpretation, Scholar Says
4. Photocatalytic Air Cleaning System Promises To Help Allergy Sufferers
5. Center For Future Health Aims To Bring High-Tech, Low-Cost Health Care To The Home
6. Harbor Branch Web Developers Team With ABC News To Bring Ocean Adventure To A Computer Near You
7. Harbor Branch Web Developers Bring Adventures @Sea To Every Desktop
8. Angry Biotech Firms Are Blaming The Industry Leader For Bringing Modified Crops Into Disrepute
9. Tourists And Scientists Could Be Bringing Deadly Diseases To Antarcticas Wildlife
10. Epic Of Evolution Conference Brings Science And Religion Together November 12-14

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Bird Dads Suffer Infidelity But Bring Baby

(Date:10/31/2014)... emits over a wide part of the electromagnetic spectrum ... built in Lund, Sweden. The MAX IV facility presents ... together its component parts in a storage - ring ... a few hundred metres. Nevertheless, if these various challenges ... experiments that require source brightness and transverse coherence will ...
(Date:10/31/2014)... Ebola one important hurdle has just been cleared – ... of North Carolina at Chapel Hill and colleagues have ... be infected with Ebola and display symptoms similar to ... current issue of Science , will significantly improve ... desperately needed to curb the worldwide public health and ...
(Date:10/31/2014)...  HITLAB SM , a healthcare innovation and ... HITLAB Innovators Summit SM on December 1, ... partner with the Clinton Foundation,s Health Matters Initiative, ... Business School Alumni Club of New ... Operations Research, bringing together leaders in healthcare and ...
Breaking Biology News(10 mins):A new generation of storage -- ring 2Improved mouse model will accelerate research on potential Ebola vaccines, treatments 2HITLAB Announces Inaugural HITLAB Innovators Summit 2HITLAB Announces Inaugural HITLAB Innovators Summit 3
(Date:10/30/2014)... , October 30, 2014 Investor-Edge ... Inc. (NYSE MKT: ONVO), Medivation Inc. (NASDAQ: ... Synthetic Biologics Inc. (NYSE MKT: SYN), and Ironwood Pharmaceuticals ... can be accessed at: http://investor-edge.com/register . ... at 4,549.23, down 0.33%, the Dow Jones Industrial Average ...
(Date:10/30/2014)... 29, 2014 Global polyvinyl chloride (PVC) ... economic crisis during 2008-2009, especially in North America and ... currently is keeping to a growing trend. , The ... utilized in the construction segment. In 2013, the key ... tubing, sheets and rigid film. Moreover, the PVC was ...
(Date:10/30/2014)... (PRWEB) October 30, 2014 On ... Cellular Medicine Showcase in Chicago, leading applied stem ... Surgeon, Dr. Wade McKenna presented talks on New ... Orthopedic Surgical Applications For Stem Cells. , Dr. ... membrane and the properties of AlphaGEMS that include: ...
(Date:10/30/2014)... CA (PRWEB) October 30, 2014 ... today that they have manually curated public data source ... non profit customers. the data is now available ... curates and unifies public and internal data sources for ... and knowledge out of the data that becomes more ...
Breaking Biology Technology:Biotech Equities Movers and Shakers - Organovo Holdings, Medivation, Pharmacyclics, Synthetic Biologics, and Ironwood Pharma 2Biotech Equities Movers and Shakers - Organovo Holdings, Medivation, Pharmacyclics, Synthetic Biologics, and Ironwood Pharma 3Biotech Equities Movers and Shakers - Organovo Holdings, Medivation, Pharmacyclics, Synthetic Biologics, and Ironwood Pharma 4Biotech Equities Movers and Shakers - Organovo Holdings, Medivation, Pharmacyclics, Synthetic Biologics, and Ironwood Pharma 5Global Polyvinyl Chloride Demand Is on Upward Trend Now, Says Merchant Research & Consulting in Its Topical Study 2Global Polyvinyl Chloride Demand Is on Upward Trend Now, Says Merchant Research & Consulting in Its Topical Study 3Riordan-McKenna Institute Founders, Neil Riordan, PhD and Orthopedic Surgeon, Dr. Wade McKenna Present at the Mid American Regenerative and Cellular Medicine Showcase 2Riordan-McKenna Institute Founders, Neil Riordan, PhD and Orthopedic Surgeon, Dr. Wade McKenna Present at the Mid American Regenerative and Cellular Medicine Showcase 3Riordan-McKenna Institute Founders, Neil Riordan, PhD and Orthopedic Surgeon, Dr. Wade McKenna Present at the Mid American Regenerative and Cellular Medicine Showcase 4Rancho BioSciences Manually Curated TCGA Data Sets Available 2
Cached News: