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:11/21/2014)... According to a new market ... RFID, Access Control, Intrusion Detection, Parking Management, Under Vehicle ... Service Geography - Global Forecasts to 2020", published by ... be around $25 Billion in 2014 and is expected ... CAGR of 8.69%. Browse 116 market data ...
(Date:11/21/2014)... Calif. , Nov. 20, 2014 Strict ... driver efficiency are piloting the North American and European ... of accidents growing, gesture recognition systems that are intuitive ... a mark in the industry. New ... Automotive Gesture Recognition Market in Europe ...
(Date:11/21/2014)... , Nov. 20, 2014   Atmel® Corporation ... in microcontroller (MCU) and touch technology solutions, today launched ... sensors with the widest V cc range ... temperature accuracy and faster I 2 C bus communication ... serial EEPROM memory making them ideal for consumer, industrial, ...
Breaking Biology News(10 mins):Industrial Security Systems Market Worth $38 Billion by 2020 2Industrial Security Systems Market Worth $38 Billion by 2020 3Gesture Recognition Intensifies with the Rise of In-car Smartphone Integration, Says Frost & Sullivan 2Gesture Recognition Intensifies with the Rise of In-car Smartphone Integration, Says Frost & Sullivan 3Gesture Recognition Intensifies with the Rise of In-car Smartphone Integration, Says Frost & Sullivan 4Atmel Launches Industry's First Wide-V(cc) Low-Power Temperature Sensor Family 2Atmel Launches Industry's First Wide-V(cc) Low-Power Temperature Sensor Family 3Atmel Launches Industry's First Wide-V(cc) Low-Power Temperature Sensor Family 4
(Date:12/19/2014)... December 19, 2014 Bioject Medical ... and manufacturer of needle-free injection technology, today announced ... Immunomic Therapeutics, Inc. (“ITI”) for ITI to use ... its LAMP™ vaccine platform. , In the ... Worldwide license to the Biojector®-2000 that triggers based ...
(Date:12/19/2014)... BioPlus Specialty Pharmacy (BioPlus), one of the ... Maroulis, Pharm.D. to the newly created position of Vice ... position, Dr. Maroulis will continue to manage the entire ... multi-site pharmacies as the company expands. Dr. Maroulis has ... he has served in many different capacities in the ...
(Date:12/19/2014)... -- Roche (SIX: RO, ROG; OTCQX: RHHBY) announced today ... privately held company based in Redwood ... big data platform for centralized management and processing ... on-market Genomic Management Solution, Bina-GMS 1 , empowers ... and scalable analyses to maximize the value of ...
(Date:12/19/2014)... , Dec. 19, 2014 Decision Resources ... will grow at a 12 percent compound annual growth ... of the aging population and the increasing adoption of ... America will also spur demand for dental ... dental implant and periodontal treatments. Other key ...
Breaking Biology Technology:Bioject and Immunomic Therapeutics Enter into an Agreement for License of Needle-Free Technology for LAMP-vax Vaccines 2Bioject and Immunomic Therapeutics Enter into an Agreement for License of Needle-Free Technology for LAMP-vax Vaccines 3BioPlus Specialty Pharmacy Promotes Dr. Nick Maroulis to Vice President of Specialty Pharmacy Services 2Roche acquires Bina Technologies and enters the genomic informatics market 2Roche acquires Bina Technologies and enters the genomic informatics market 3Latin American Dental Biomaterial Market Will Expand at a 12 Percent Annual Growth Rate Through 2023 2Latin American Dental Biomaterial Market Will Expand at a 12 Percent Annual Growth Rate Through 2023 3
Cached News: