Navigation Links
Female promiscuity can rescue populations from harmful effects of inbreeding
Date:9/22/2011

Females in inbred populations become more promiscuous in order to screen out sperm from genetically incompatible males, according to new study by the University of East Anglia (UEA).

Published tomorrow in the journal Science, the findings help answer the puzzling evolutionary question of why females in most species mate with multiple males even though a single male can provide full fertility and promiscuity can carry fatal risks for the female.

Using the red flour beetle as a model species, the researchers investigated the reproductive benefits of female promiscuity or 'polyandry'. Polyandry, where a female's eggs are fertilized by multiple fathers, is the norm in most species, from chimpanzees to chickens, salmon to sea urchins. While biologists have recorded significant costs to females of this mating pattern, even death, these new findings show there can also be genetic benefits.

The UEA team found that the reproductive success of females in populations that were not inbred was identical, whether mating with one or five males. In inbred populations, females mating with just one male showed a 50 per cent reduction in the number of surviving offspring they could produce. However, inbred females who mated with five males managed to rescue their reproductive success back up to the levels of the non-inbred populations. The researchers checked to see if this could be explained by male infertility, but inbred males are just as fertile as non-inbred males. The effect was therefore due to genetic incompatibility between males and females, which is prevalent when a population becomes inbred. Importantly, the results show that females possess mechanisms that allow them to filter in the genetically most compatible sperm to produce more viable offspring.

Having made this discovery, the researchers then went on to create deliberate genetic bottlenecks in populations of flour beetles and demonstrated for the first time that af
'/>"/>

Contact: Simon Dunford, Press Officer
s.dunford@uea.ac.uk
44-016-035-92203
University of East Anglia
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Pitt team finds molecular evidence of brain changes in depressed females
2. Male-female ring finger proportions tied to sex hormones in embryo; may offer health insights
3. Headaches are common in year following traumatic brain injury, especially among females
4. Females can place limits on evolution of attractive features in males, research shows
5. Avian Axe effect attracts attention of females and males
6. Girls Puberty Book Project provides an international model for promoting female health in Africa
7. Competition between females leads to infanticide in some primates
8. The importance of inner values -- female sparrows test the genetic make-up of their mates
9. Female-to-male transsexual people have more autistic traits
10. In fireflies, flightless females lose out on gifts from males
11. When food is scarce, hungry female spiders alter mating preferences
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/10/2015)... 2015 Fingerprint Cards (FPC) has received ... from the distributor World Peace Industrial Group (WPI), part of ... Asia . Deliveries are planned to take place ... smartphone manufacturers in China . The order ... guidance of + 1 000 MSEK for 2015.   ...
(Date:5/5/2015)... 2015, NXT-ID, Inc. (NASDAQ: NXTD ) ("NXT-ID" ... growing mobile commerce market, reminds investors and media that  Mr. ... presenting  at CARTES SECURE CONNEXIONS AMERICA 2015, held in ... The three-day conference is organized into a series of ... themed Global Fraud: Where is the Trust in Cyberspace? ...
(Date:4/21/2015)... -- High crime rate, increasing government ... control systems market in Saudi Arabia ... report by TechSci Research " Saudi Arabia Access Control Systems Market ... market in Saudi Arabia is ... systems market in the Kingdom is growing at a ...
Breaking Biology News(10 mins):Fingerprint Cards Receives Touch Fingerprint Sensor Order of SEK 235 Million 2NXT-ID, Inc.'s CTO, David Tunnell, Presents at CARTES SECURE CONNEXIONS AMERICA 2015 Today in Washington DC. 2NXT-ID, Inc.'s CTO, David Tunnell, Presents at CARTES SECURE CONNEXIONS AMERICA 2015 Today in Washington DC. 3Saudi Arabia Access Control Systems Market to Touch USD1.2 Billion by 2020 Says TechSci Research 2Saudi Arabia Access Control Systems Market to Touch USD1.2 Billion by 2020 Says TechSci Research 3
... 2012 Childhood Obesity , a peer-reviewed journal from Mary ... dedicated to the role that schools can and should ... eating habits to help stem the tide of the ... provides comprehensive coverage of food policy, systems, and programs ...
... becomes extinct, other predatory species could soon follow, according to ... a University of Exeter team has now carried out the ... 2012) in the Royal Society journal Biology Letters , ... can indirectly cause another to become extinct. The University of ...
... Biofuels and Texas AgriLife Research, part of The Texas ... develop and commercialize cellulosic feedstocks for the production of ... diverse high biomass energy crop breeding program and BP ... companies growing commercial-scale biomass crops for liquid fuels. ...
Cached Biology News:School food -- on the front line in the fight against childhood obesity 2Study proves that 1 extinction leads to another 2BP Biofuels, Texas AgriLife Research sign agreement to advance biofuel feedstock development 2
(Date:5/22/2015)... (PRWEB) May 22, 2015 Charm ... U.S. Department of Agriculture (USDA), Grain Inspection, Packers ... year contract to Charm Sciences to monitor aflatoxin ... Test (water-based) and ROSA FAST Aflatoxin Quantitative Test ... Quantitative Test uses Water Extraction Technology to ...
(Date:5/22/2015)... 22, 2015 Baylor Research Institute (BRI) ... Genomics Research Institute (TGen) in Phoenix, AZ ... accelerating early detection and treatments for patients with a broad ... will lead to new clinical trials and access to technology ... gap from bench to bedside across Baylor Scott ...
(Date:5/21/2015)... 2015 Seventh Wave Laboratories, a consulting-based ... of pharmaceutical products and medical devices, announced the purchase ... a 50,000 sq. ft. building more than three times ... growth. Facility renovations will begin immediately and the gradual ... occur in September. , “We are excited about ...
(Date:5/21/2015)... NEW YORK , May 21, 2015 /PRNewswire/ ... Prader-Willi Research (FPWR), a nonprofit organization dedicated to ... of Prader-Willi syndrome (PWS), announced today that FPWR ... Leon and Irina Shaulov contributed $1 ... and clinical initiatives.  ...
Breaking Biology Technology:USDA-GIPSA (FGIS) Awards 5 Year Contract for Aflatoxin Tests to Charm Sciences 2Precision Medicine Collaboration to Increase Options for Cancer Patients 2Precision Medicine Collaboration to Increase Options for Cancer Patients 3Precision Medicine Collaboration to Increase Options for Cancer Patients 4Seventh Wave Laboratories Purchases Building for Expansion, Upcoming Move 2Seventh Wave Laboratories Purchases Building for Expansion, Upcoming Move 3The Foundation for Prader-Willi Research Receives $1M Contribution in Support of Clinical Initiatives 2
... Inc. ("Dragon Pharma" or the "Company" TSX: DDD; OTCBB: ... announced the results of the Annual Shareholders Meeting held ... There were 50,209,377 shares equaling 74.87% of the outstanding ... following eight persons to serve as members of the ...
... RICHMOND, Calif., June 22 BRAHMS Aktiengesellschaft, ... a biotechnology leader in new proprietary fluorescent metal-lanthanide ... they have signed an agreement on incorporation of ... , , Under the agreement, BRAHMS together ...
... CEM Corporation has won a 2009 ... Conditions category for its Sprint(TM) Rapid Protein Analyzer ... ceremony at the Carnegie Institute for Science (CIS) in Washington, DC. ... ) , , (Logo: http://www.newscom.com/cgi-bin/prnh/20090622/CL35336LOGO ...
Cached Biology Technology:BRAHMS, Cezanne and Lumiphore Announce Partnership for Diagnostic Tests 2BRAHMS, Cezanne and Lumiphore Announce Partnership for Diagnostic Tests 3CEM Wins Presidential Green Chemistry Challenge Award for the Sprint Rapid Protein Analyzer 2
... If particles in the submicron range are ... process, measurement and control of particle size ... analyzer that can reliably detect the component ... N5 Submicron Particle Size Analyzer uses Photon ...
... Antibody Binding: High, 400 ng IgG/cm ... , Binding Interaction: Hydrophobic/Ionic , Performance Certified: ... Flat , Maximum Well Volume: 360 µl ... ,Features, Special optically clear polystyrene ...
... of Caspase/DIABLO Liquid. In 100 mM ... CYCLES. Amino acid residues 56 - 239 of ... sequence was expressed in and purified from ... with cytochrome c during apoptosis and ...
... a dedicated system for SFC and SFE ... of HPLC instrumentation. JASCO has recently added ... of the system: ,- The PU-1580-CO2 delivery ... procedures using carbon dioxide as the mobile ...
Biology Products: