Navigation Links
Male-killing bacteria makes female butterflies more promiscuous

flies to continue the population successfully. This is partly because the decision to mate is mainly under female control and because males have a high mating capacity."

This study was carried out on Hypolimnas bolina butterflies in Pacific Island and South-East Asian populations. The islands provide an ideal location because every island is differently affected by the male-killling bacteria so that each has a different ratio of males to females.

The researchers assessed the natural sex ratio in 20 populations and combined this data with female mating frequency and the size of the male sperm package (Spermatophore) per copulation to find how female promiscuity was affected by the sex ratio. They found that the size of the Spermatophore was key to female promiscuity. However, female promiscuity only rises up to the point where males become so rare that female virginity rates rise.

The male-killling phenomenon in this species was first identified in 1920 by Hubert Simmonds but has not received much attention until now. This finding is significant for the scientific community because it demonstrates how a species' mating system can be determined by the frequency of a parasite.
'"/>

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:7/25/2014)... broad-scale estimate of air pollution removal by trees nationwide, ... are saving more than 850 human lives a year ... While trees, pollution removal equated to an average air ... of that improvement are substantial. Researchers valued the human ... $7 billion every year in a study published recently ...
(Date:7/25/2014)... people lived on the land now called California, and ... availability of plants they used for food, fuel, tools, ... maintain desired habitat and natural resources. , Frank Lake, ... Station, will lead a field trip to ... Society of America,s 99th Annual Meeting, in Sacramento, Cal. ...
(Date:7/25/2014)... from the Terra satellite show the different areas that have ... Russia. The burn scars show up as reddish-brown splotches ... broken across the remote parts of Eastern Russia in the ... MODIS instrument, it is still possible to see the ... features noted below show the devastating number of fires that ...
Breaking Biology News(10 mins):First national study finds trees saving lives, reducing respiratory problems 2Fire ecology manipulation by California native cultures 2Fire ecology manipulation by California native cultures 3
... OCTOBER 2008 - More than 8,000 international scientists ... Center to participate in the first-ever Joint Annual ... major part of their focus will be agricultural ... major agricultural challenges., When: Oct. 5-9, 2008, Where: ...
... has confirmed the appointment of Esin Gulari, dean of the ... on the National Science Board (NSB). President George W. Bush ... scientists. "This is a tremendous honor for me as ... I will be in a unique position to make contributions ...
... cellulosic ethanol production and use have uncertain environmental consequences ... researchers from the University of Oklahoma and Oklahoma State ... on the need for a science-based policy to address ... Science magazine. Linda Wallace, OU botany professor, ...
Cached Biology News:Agricultural research highlighted in Houston 2US Senate confirms Clemson University engineering Dean Esin Gulari to National Science Board 2Oklahoma researchers support biodiversity in biofuels production 2
(Date:7/26/2014)... July 26, 2014 Canada Endoscopy ... market data on the Canada Endoscopy Visualization Systems ... US dollars, volume (in units) and average prices ... Endoscopy Visualization Systems, Mid-Range Endoscopy Visualization Systems and ... at http://www.marketresearchreports.biz/analysis/213254 . , The report also ...
(Date:7/25/2014)... 2014 "Ischemic Stroke and Cerebral ... data on the Ischemic Stroke and Cerebral Stroke ... and data relating to the clinical trials on ... global Ischemic Stroke Research Report 2014 at: ... the trial numbers and their recruitment status as ...
(Date:7/25/2014)... , July 25, 2014 Amgen (NASDAQ: ... today declared a $0.61 per share dividend for the ... on Sept. 5, 2014, to all stockholders of record ... 2014.  About Amgen Amgen is committed ... from serious illnesses by discovering, developing, manufacturing and delivering ...
(Date:7/25/2014)... MA -- Trillions of bacteria live in each person,s ... help digest food and stave off harmful infections, but ... , To help shed light on the role of ... associate professor Eric Alm recently tracked fluctuations in the ... year. The findings, described in the July 25 issue ...
Breaking Biology Technology:Canada Endoscopy Visualization Systems Market Outlook to 2020: MarketResearchReports.Biz 2Canada Endoscopy Visualization Systems Market Outlook to 2020: MarketResearchReports.Biz 3Canada Endoscopy Visualization Systems Market Outlook to 2020: MarketResearchReports.Biz 4Canada Endoscopy Visualization Systems Market Outlook to 2020: MarketResearchReports.Biz 5Ischemic Stroke and Cerebral Stroke Global Clinical Trials Review H2, 2014: MarketResearchReports.Biz 2Ischemic Stroke and Cerebral Stroke Global Clinical Trials Review H2, 2014: MarketResearchReports.Biz 3Amgen Announces 2014 Third Quarter Dividend 2Amgen Announces 2014 Third Quarter Dividend 3Monitoring the rise and fall of the microbiome 2Monitoring the rise and fall of the microbiome 3
... HOUSTON, Feb. 5 In a paper published in the ... Norman L. Sussman, Brendan M. McGuire and James H. Kelly ... device. "There are currently three times as many patients on ... available and few ways to stabilize them if they enter ...
... Feb. 4 /PRNewswire-Asia-FirstCall/ -- BMP Sunstone,Corporation (Nasdaq: BJGP ... will attend the 2009 UBS Global Healthcare Services,Conference, which will ... to 11th. , Management is currently ... 2009, and hold one-on-one meetings the same day. , ...
... U.S. with New Facility and Personnel Additions to Better ... - As part of an ongoing initiative to expand ... has significantly bolstered its data management resources with the ... larger office space, which will be directed by new ...
Cached Biology Technology:Stem Cell Innovations' PluriCells(TM) to Form the Basis of a Liver Assist Device to Support Patients Waiting for Transplant. 2Stem Cell Innovations' PluriCells(TM) to Form the Basis of a Liver Assist Device to Support Patients Waiting for Transplant. 3BMP Sunstone to Present at UBS Global Healthcare Services Conference 2New General Manager, Transition to New Raleigh Offices Highlight Datatrial's Expansion of North American Operations 2
KNP-1 (HES1) Purified Anti-Mouse, Anti-Rat, Anti-Human, Anti-Dog, Anti-Chicken clone 35, Isotype Mouse IgG 1 , 150 µg Consult technical datasheet for details....
Request Info...
Form: Ready to use Applications: Immunohistology-frozen, Immunohistology-paraffin, Western Blot, ELISA...
... H): 17 3/4" x 8 ... Programmable 0 - 100 hoursControl: Programmable 30 ... 40 user programmable protocols 3 operating modes ... temperature ramp-up from 37 - 95C and ...
Biology Products: