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:


(Date:1/25/2016)... Pa. , Jan. 25, 2016   Unisys Corporation ... system at John F. Kennedy (JFK) International Airport, New ... Protection (CBP) identify imposters attempting to enter the ... not belong to them. pilot testing of the ... initially at three terminals at JFK during January 2016. --> ...
(Date:1/22/2016)... , Jan. 22, 2016 ... addition of the "Global Biometrics Market ... their offering. --> http://www.researchandmarkets.com/research/p74whf/global_biometrics ... "Global Biometrics Market in Retail Sector ... --> Research and Markets ( ...
(Date:1/20/2016)...   MedNet Solutions , an innovative SaaS-based eClinical ... research, is pleased to announce the attainment of record-setting ... result of the company,s laser focus on (and growing ... it,s comprehensive, easy-to-use and highly affordable cloud-based technology platform. ... MedNet growth achievements in 2015 include: , ...
Breaking Biology News(10 mins):
(Date:2/11/2016)... Calif. , Feb. 11, 2016  Dovetail Genomics™ ... to its beta program for a planned metagenomic genome ... present the company,s metagenomic genome assembly method in a ... in Genome Biology & Technology conference in ... of these highly complex datasets is difficult. Using its ...
(Date:2/11/2016)... 2016   BioInformant announces the February 2016 ... Products, Opportunities, Tools, and Technologies – Market Size, Segments, ... The first and only ... industry, BioInformant has more than a decade of historical ... by stem cell type. This powerful 175 page global ...
(Date:2/11/2016)... MIAMI (PRWEB) , ... February 11, 2016 , ... ... in regenerative medicine, has announced a new agreement with Bankok,Thailand-based Global Stem Cells ... researchers and phsyicians in 15 Latin American countries, including Mexico, Costa Rica, Dominican ...
(Date:2/10/2016)... Febr. 10, 2016 /PRNewswire/ - BioAmber Inc. (NYSE: BIOA ... announce that Mitsui & Co. Ltd., its partner in ... plant, is investing an additional CDN$25 million in the ... stake from 30% to 40%.  Mitsui will also play ... produced in Sarnia , providing dedicated ...
Breaking Biology Technology:
Cached News: