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:12/3/2009)...els that repels grime and dirt? Expanded battery s...el Aviv University research, just published in Na...sembling peptides at the nano-scale level that cou... a few years. , Operating in the range of 100 na...en smaller, graduate student Lihi Adler-Abramovich...
(Date:12/3/2009)...nality change in warmer water, according to an int...ay make some species more aggressive. , Experime...lia,s Great Barrier Reef have shown for the first ...imid, or consistently bold, and that these individ...eratures rise. , A slight lift of just one or tw...
(Date:12/3/2009)...m the U.S. Department of Energy,s (DOE) Brookhaven...Indian Institute of Science has made a major step ...information in DNA that is necessary to carry out ...ished in the December 1, 2009 edition of Nature S... proteins responsible for interacting at specific ...
Breaking Biology News(10 mins):A window that washes itself? 2Fish with attitude: Some like it hot 2Grooving down the helix 2Grooving down the helix 3Folk Medicine Therapy May Prevent Alcoholic Relapse 54302 1Folk Medicine Therapy May Prevent Alcoholic Relapse 54302 2maxIT Assists Medical Center to Achieve Prestigious Stage 6 Recognition 54299 1maxIT Assists Medical Center to Achieve Prestigious Stage 6 Recognition 54299 2maxIT Assists Medical Center to Achieve Prestigious Stage 6 Recognition 54299 3Members of Over 71 Million U S Households Ignored by Universal Healthcare 54296 1Members of Over 71 Million U S Households Ignored by Universal Healthcare 54296 2Members of Over 71 Million U S Households Ignored by Universal Healthcare 54296 3Members of Over 71 Million U S Households Ignored by Universal Healthcare 54296 4
...f the 2006-2007 activities of UC San Diegos engine...y they recently took home the nations most outstan...oss fundraiser. , Youll find the detailed lesson ...ineering and science fundamentals to 75 fifth grad... find all kinds of information about the tutoring ...
...ajor role in an international scientific team that...ely related fruit fly species. As well has having ...tation to evolving immune systems -- the analysis ...on of each species., From the results of the resea... two papers published this week in the journal Nat...
...y of Idaho researchers are crossing academic and g...ses against Staphylococcus aureus bacteria and oth... effort is to create much faster and more accurate...otic methicillin, formally known as methicillin-re...rough detection technologies are already in hand i...
Other Biology News:UC-San Diego Engineering Honor Society wins most outstanding chapter award 2International team compares 12 fruit fly genomes 2International team compares 12 fruit fly genomes 3Developing kryptonite for Superbug 2Developing kryptonite for Superbug 3Developing kryptonite for Superbug 4Developing kryptonite for Superbug 5
(Date:12/2/2009)...2 Reportlinker.com announces that ...atalogue: ,, Drug Discovery Technologies - A G... ,, http://www.reportlinker.com/p0164246/Drug-...-Trends--Opportunities.html ,, Drug discovery ...y pharmaceutical company,s business strategy. Ther...
(Date:12/2/2009)...c. 2 Peregrine Pharmaceu...etion of patient enrollment in a dose confirmation...ith relapsed glioblastoma multiforme (GBM), the de...d monoclonal antibody linked to a radioisotope bei... Cotara specifically targets cells at the center ...
(Date:12/2/2009)...therlands, December 2 Pepscan Hold...y focusing on protein mimicking,technology for the... that it,has appointed Wim E.M. Mol, Ph.D. as new ...e responsible for all of Pepscans corporate functi...tion of the company. He brings to,Pepscan more tha...
(Date:12/2/2009)... 2 S*BIO Pte Ltd today announced d..., SB1518, at The American Society of Hematology 51..., Data will be presented on the clinical result... detailing its safety, tolerability and pharmacoki...ls ranging from 100 to 600 mg. These doses were ad...
Breaking Biology Technology:Reportlinker Adds Drug Discovery Technologies - A Global Update of Market Trends & Opportunities 2Reportlinker Adds Drug Discovery Technologies - A Global Update of Market Trends & Opportunities 3Reportlinker Adds Drug Discovery Technologies - A Global Update of Market Trends & Opportunities 4Reportlinker Adds Drug Discovery Technologies - A Global Update of Market Trends & Opportunities 5Reportlinker Adds Drug Discovery Technologies - A Global Update of Market Trends & Opportunities 6Reportlinker Adds Drug Discovery Technologies - A Global Update of Market Trends & Opportunities 7Reportlinker Adds Drug Discovery Technologies - A Global Update of Market Trends & Opportunities 8Reportlinker Adds Drug Discovery Technologies - A Global Update of Market Trends & Opportunities 9Peregrine Completes Patient Enrollment in Cotara(R) Dose Confirmation and Dosimetry Brain Cancer Trial 2Peregrine Completes Patient Enrollment in Cotara(R) Dose Confirmation and Dosimetry Brain Cancer Trial 3Peregrine Completes Patient Enrollment in Cotara(R) Dose Confirmation and Dosimetry Brain Cancer Trial 4Peregrine Completes Patient Enrollment in Cotara(R) Dose Confirmation and Dosimetry Brain Cancer Trial 5Dutch Biotech Company Pepscan Appoints New CEO 2S*BIO Novel Oral JAK2 Inhibitor SB1518 Demonstrates Safety and Tolerability in Phase 1 Studies for the Treatment of Myeloproliferative and Other Hematological Disorders 2S*BIO Novel Oral JAK2 Inhibitor SB1518 Demonstrates Safety and Tolerability in Phase 1 Studies for the Treatment of Myeloproliferative and Other Hematological Disorders 3S*BIO Novel Oral JAK2 Inhibitor SB1518 Demonstrates Safety and Tolerability in Phase 1 Studies for the Treatment of Myeloproliferative and Other Hematological Disorders 4S*BIO Novel Oral JAK2 Inhibitor SB1518 Demonstrates Safety and Tolerability in Phase 1 Studies for the Treatment of Myeloproliferative and Other Hematological Disorders 5
...evelopment, Biomarker Identification ..., Oct. 10 MultiCell,Technologies, Inc. (OTC Bulle...ve license and technology purchase agreement with ... Company,s Fa2N-4 immortalized,adult human liver c...and has agreed to purchase,certain inventory and e...
...herapeutics Corporation (Nasdaq: TARG ) today ann...of 5,750,000 shares of its common stock at a price...res are being offered by,Targanta. Targanta has gr...ase up to an additional 862,500 shares of common s...ing discounts and commissions, to cover,over-allot...
...efits of Unsaturated Fatty Acids in ... 10 Amarin Corporation plc,(NASDAQ: AMRN ) today...development strategy to capitalize on the known th...ardiovascular disease. Amarin plans to utilize,its...e to develop a series,of products targeting the va...
Other Biology Technology:MultiCell Technologies Signs Worldwide Exclusive License Agreement With Corning Incorporated 2MultiCell Technologies Signs Worldwide Exclusive License Agreement With Corning Incorporated 3Targanta Therapeutics Announces Pricing of its Initial Public Offering 2Amarin Announces Initiation of Cardiovascular Development Strategy 2Amarin Announces Initiation of Cardiovascular Development Strategy 3Amarin Announces Initiation of Cardiovascular Development Strategy 4Amarin Announces Initiation of Cardiovascular Development Strategy 5
Chaps Cell Extract Buffer (10X) from Cell Signaling Technology
UltraClean Microbial DNA Isolation Kit from Mo Bio Laboratories, Inc.
Custom Oligo Assay Single Locus 1920 samples from Illumina
Anti-Human L-Ficolin Monoclonal Antibody, Unconjugated, Clone GN4 from Cell Sciences
Biology Products: