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:2/21/2017)... 21, 2017 Der weltweite Biobanking-Sektor ... Nach einem Gespräch mit mehr als 50 Vertretern aus verschiedenen ... überwinden gilt, um diese Prognose zu realisieren. ... Zu ... der finanziellen Mittel für die Biobank, die Implementierung Zeit ...
(Date:2/13/2017)... SAN FRANCISCO , Feb. 13, 2017 /PRNewswire/ ... a centralized platform that is designed to enhance ... the latest release in the RSA Fraud & ... to enable organizations to leverage additional insights from ... anti-fraud tools to better protect their customers from ...
(Date:2/9/2017)... LONDON , Feb. 9, 2017 The ... in-depth analysis of the biomass boiler market globally in ... sales of biomass boilers. The market for biomass boilers ... product type, end-user, application, and country/region. The market based ... agriculture & forest residues, biogas & energy crops, urban ...
Breaking Biology News(10 mins):
(Date:3/24/2017)... Mass. , March 24, 2017 Agenus ... of immune checkpoint antibodies and cancer vaccines, today announced ... The 7 th  Annual William Blair and Maidstone Life ... Space Alexandria Center in New York, NY ... March 29 at 9:40 am: Robert ...
(Date:3/23/2017)... ... 23, 2017 , ... Lajollacooks4u is proud to announce it has become the premiere team-building cooking ... for companies around the world, such as Illumina, HP and Qualcomm, and is ranked #1 ... increasing popularity is due to its new team building format, a way for teams to ...
(Date:3/23/2017)... , March 23, 2017  Northwest Biotherapeutics (OTCQB: ... personalized immune therapies for solid tumor cancers, today ... million financing it announced last Friday, March 17, ... several institutional investors securities totaling 28,843,692 shares, comprised ... and 10,000,000 shares of Class C Warrants pre-funded ...
(Date:3/23/2017)... , March 23, 2017  GlobeImmune, Inc. today announced ... the sale of 12,835,490 shares of its common stock ... of companies. In connection with the sale of its common ... cash and issue to GlobeImmune 200,000 shares, an estimated ... "We are pleased to enter into this ...
Breaking Biology Technology:
Cached News: