Navigation Links
Male-killing bacteria makes female butterflies more promiscuous

A study at UCL (University College London) finds that a high-prevalence of male-killing bacteria active in many species of insect including the butterfly, actually increases female promiscuity and male fatigue.

The team found that when the male insect population drops -- killed off by the bacteria -- the female butterfly becomes more sexually rampant. Males on the other hand show signs of fatigue and put less effort into mating.

In some populations of tropical butterfly the entire mating system is determined by a group of bacteria known as Wolbachia, according to the study, published in the journal ‘Current Biology'.

Dr Sylvain Charlat, of the UCL Department of Biology, who led the study, said: "Male-killling bacteria are found in many insect species including the British ladybird. We wanted to know what the effect of the bacteria is on the mating system, and here we've shown that butterfly mating patterns are strongly determined by the killer bacteria.

"Contrary to expectation, we also find that female promiscuity actually rises when male numbers are reduced. Greater numbers of female partners leads to fatigue in males. They start producing smaller sperm packages. Unfortunately, the female butterflies instinctively know that the packages are smaller and that their chances of having been impregnated after mating are lower than usual. This just makes them more rampant!"

The male-killling bacterium is transmitted from mother to son and actually kills the son before the embryo hatches into a caterpillar. Only female offspring of female carriers of the bacteria can survive, which can lead to the male population being as low as one male to every hundred females in some areas.

Dr Greg Hurst, of the UCL Department of Biology and a senior author of the study, said: "It's amazing that the numbers of male butterflies can get so low and yet the population is still sustainable and stable. You don't need many male butter
'"/>

Source:University College London


Page: 1 2

Related biology news :

1. Anti-bacterial additive widespread in U.S. waterways
2. A bacterial genome reveals new targets to combat infectious disease
3. Discovery of key proteins shape could lead to improved bacterial pneumonia vaccine
4. Scientists discover that host cell lipids facilitate bacterial movement
5. Family trees of ancient bacteria reveal evolutionary moves
6. Drug-resistant bacteria on poultry products differ by brand
7. Programmable cells: Engineer turns bacteria into living computers
8. NASA links nanobacteria to kidney stones and other diseases
9. Substance protects resilient staph bacteria
10. Physiological effects of reduced gravity on bacteria
11. Anammox bacteria produce nitrogen gas in oceans snackbar
Post Your Comments:
(Date:5/14/2015)... , May 14, 2015  Verificient ... identity verification and online remote proctoring, announced ... software-as-a-service (SaaS) company and creator of the ... of the two companies will benefit from ... Canvas. As a fully integrated ...
(Date:5/8/2015)... , May 8, 2015 Synaptics Inc. (NASDAQ: ... today announced that members of the executive management team will ... 43rd Annual Technology, Media and Telecom Conference Date: May ... in Boston, MA Cowen ... 2015 Time: 2:45pm ET Location: The New York Palace Hotel, ...
(Date:4/27/2015)... Apr. 27, 2015 NXT-ID, Inc. (NASDAQ: ... company focused on the growing mobile commerce market, announces ... pre-order customers the first week of May, 2015 and ... of May. Gino Pereira , ... for the company as Wocket® enters the consumer market. ...
Breaking Biology News(10 mins):Verificient and Instructure Announce Alliance Partnership to Provide Online Proctoring for K-12 and Higher Education Institutions 2Synaptics to Present at Upcoming Investor Conferences 2Wocket, the Smartest Wallet You Will Ever Own, Announces Shipment to Pre-order Customers 2Wocket, the Smartest Wallet You Will Ever Own, Announces Shipment to Pre-order Customers 3
... (BRONX, NY) "It,s in their genes" is a common ... to reach age 100 and beyond. Up until now, ... advantage such as high levels of HDL ("good") cholesterol. But ... Ferkauf Graduate School of Psychology of Yeshiva University ...
... San Diego have discovered that a small dose of a ... and affects their ability to recruit their nestmates to otherwise ... in this week,s issue of the Journal of Experimental ... to bee-pollinated crops and shed light on one of the ...
... in German . , Tobacco: actually pretty bad food ... of wild tobacco ( Nicotiana attenuata ). When this plant grows ... by tobacco hornworm larvae ( Manduca sexta ). This specialist insect ... a defense against its enemies. When researchers from the Max Planck ...
Cached Biology News:'Personality genes' may help account for longevity 2Commonly used pesticide turns honey bees into 'picky eaters' 2Deterring signals: Tobacco plants advertise their defensive readiness to attacking leafhoppers 2Deterring signals: Tobacco plants advertise their defensive readiness to attacking leafhoppers 3Deterring signals: Tobacco plants advertise their defensive readiness to attacking leafhoppers 4
(Date:5/28/2015)... (PRWEB) May 28, 2015 Whitehouse Laboratories ... enhanced its long term partnership with PTI Inspection Systems. ... to provide clients with custom-tailored method development and ... instruments currently available. The agreement includes a more formal ... across organizational lines. This enables a more effective ...
(Date:5/28/2015)... Atlanta, Georgia (PRWEB) May 28, 2015 ... Ridge National Laboratory (Oak Ridge, TN) recently ... strength of 3D printing plastic resins using nanocellulose, ... well-known constraint of 3D printing is the limited ... resins provide inadequate mechanical strength to printed parts ...
(Date:5/28/2015)... (PRWEB) May 28, 2015 In two ... James L. Sherley, M.D., Ph.D., will present the company’s ... In a conference talk, he will describe ... culture designs with computer simulation to produce the first-ever ... number and quality over time in culture. When ...
(Date:5/27/2015)... , May 27, 2015  The Companion ... comprehensive understanding and unprecedented access to the partnering ... leading healthcare companies during 2014. Using ... insight into the partnering activities of the past ... all the partnering and alliances deals announced worldwide.The ...
Breaking Biology Technology:Whitehouse Labs Renews & Enhances Partnership with PTI Inspection Systems 2Whitehouse Labs Renews & Enhances Partnership with PTI Inspection Systems 3American Process Inc. Announces Partnership with Oak Ridge National Laboratory to Make 3D Printing Plastic Resins Stronger and More Sustainable 2American Process Inc. Announces Partnership with Oak Ridge National Laboratory to Make 3D Printing Plastic Resins Stronger and More Sustainable 3Asymmetrex Will Discuss the Importance of Adult Tissue Stem Cell Time with 3D Tissue Engineers at the 14th Annual World Preclinical Congress in Boston in June 2Asymmetrex Will Discuss the Importance of Adult Tissue Stem Cell Time with 3D Tissue Engineers at the 14th Annual World Preclinical Congress in Boston in June 3Companion Diagnostics Deals and Alliances of 2014 2
... via Single ... Platform, MirixaPro(SM), RESTON, Va. and WASHINGTON, Oct. ... creator of,the Diabetes Ten City Challenge and a partner in the ... that will,deliver all of APhA Foundation,s HealthMapRx commercial programs via,Mirixa. MirixaPro(SM) ...
... Oct. 9 eResearchTechnology,Inc. (eRT), (Nasdaq: ERES ... technology, ePRO and other services to the pharmaceutical,biotechnology, ... will release its 2008 third quarter results for ... 30, 2008 after the market closes.,After the release, ...
... CEL-SCI Corporation,(NYSE: CVM ) announced today ... facility for its lead drug Multikine(R). This dedicated,facility, ... Multikine that,will be used for CEL-SCI,s pivotal Phase ... head and neck cancer patients, and,subsequently for sale ...
Cached Biology Technology:Mirixa Corporation and the APhA Foundation Form Partnership 2Mirixa Corporation and the APhA Foundation Form Partnership 3eResearchTechnology, Inc. to Announce 2008 Third Quarter Results on October 30, 2008 2CEL-SCI Takes Delivery of New Manufacturing Facility 2
...
... Blunt-Ended PCR Cloning Kit, 40 reactions. ... cloning of all PCR products with ... cloning approaches by offering consistently better ... 25-fold more positive clones.Amplicons generated by ...
PCR System for increased fidelity, yield and length of PCR products. Amplifies targets up to 10 kb from human genomic DNA....
... sequences: Two separate vials containing ... the same sequence used as antigens ... No. 160890) To ... guanylate cyclase polyclonal antiserum (Catalog No. ...
Biology Products: