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:7/25/2014)... N.Y., July 25, 2014 In the first broad-scale estimate ... Service scientists and collaborators calculated that trees are saving ... 670,000 incidences of acute respiratory symptoms. , While trees, ... of less than 1 percent, the impacts of that ... of the reduced air pollution at nearly $7 billion ...
(Date:7/25/2014)... Before the colonial era, 100,000s of people lived on ... cultures manipulated fire to control the availability of plants ... tribes continue to use fire to maintain desired habitat ... the U.S. Forest Service,s Pacific Southwest Station, will lead ... National Wildfire Refuge during the Ecological Society of America,s ...
(Date:7/25/2014)... the Terra satellite show the different areas that have been ... The burn scars show up as reddish-brown splotches of ... across the remote parts of Eastern Russia in the Sakha ... instrument, it is still possible to see the smoke ... noted below show the devastating number of fires that have ...
Breaking Biology News(10 mins):First national study finds trees saving lives, reducing respiratory problems 2Fire ecology manipulation by California native cultures 2Fire ecology manipulation by California native cultures 3
(Date:7/25/2014)... THOUSAND OAKS, Calif. , July 25, 2014 /PRNewswire/ ... its Board of Directors today declared a $0.61 per ... dividend will be paid on Sept. 5, 2014, to ... business on Aug. 14, 2014.  About ... biology for patients suffering from serious illnesses by discovering, ...
(Date:7/25/2014)... of bacteria live in each person,s digestive tract. Scientists ... and stave off harmful infections, but their role in ... shed light on the role of these bacteria, a ... Alm recently tracked fluctuations in the bacterial populations of ... described in the July 25 issue of the journal ...
(Date:7/25/2014)... from the University of Leicester has furthered our ... potential to create new materials using nanosized ,building ... in the prestigious academic journal Physical Review ... examine in rich detail the structure and internal ... acetylene molecule and a single helium atom. , ...
(Date:7/25/2014)... , July 25, 2014 ... the "Global Metabolomics Market 2014-2018" report ... http://photos.prnewswire.com/prnh/20130307/600769 Metabolomics or Metabonomics is ... Metabolomics has become a new experimental technique that ... the environmental sciences. Metabolites are small molecules that ...
Breaking Biology Technology:Amgen Announces 2014 Third Quarter Dividend 2Amgen Announces 2014 Third Quarter Dividend 3Monitoring the rise and fall of the microbiome 2Monitoring the rise and fall of the microbiome 3Breakthrough laser experiment reveals liquid-like motion of atoms in an ultra-cold cluster 2Breakthrough laser experiment reveals liquid-like motion of atoms in an ultra-cold cluster 3Global Metabolomics Market 2014-2018: Key Vendors are Agilent, Bio-Rad, Bruker, Human Metabolome and Metabolon 2
Cached News: