Navigation Links
'Paranoia' about rivals alters insect mating behavior
Date:8/8/2011

r for females that mate with many males. Some butterflies, for example, have evolved disproportionately large testes so that males can deliver increased sperm numbers. Fruitflies have behavioural reactions to the presence of rival males that result in prolonged reproduction with females to ensure fertilisation before the female mates with other males.

"We wanted to understand how this compared to fruitfly species where females only mated once, to see whether drivers of evolutionary change are different in species where sperm competition is low. What we observed might be considered the evolutionary equivalent of male 'paranoia'. Males more than doubled the length of time they mated with a female after they had been in the presence of other males.

"There doesn't appear to be an immediate biological reason as to why they would do this, but it is perhaps to ensure that the female remains fertile with one male's sperm for her lifespan, even though the chance of reproducing with another is remote.

"Our findings are significant because they demonstrate that particular behaviours, such as the response to competitor males, can have diverse evolutionary drivers. This takes us a step closer to understanding the differences between males that have evolved within species where individual females mate with many males and those have just one partner."

The research is published in Biology Letters.


'/>"/>

Contact: Samantha Martin
samantha.martin@liverpool.ac.uk
44-151-794-2248
University of Liverpool
Source:Eurekalert

Page: 1 2

Related biology news :

1. UNC-Duke ties lead to collaborative finding about cell division & metabolism
2. Ancient glacial melting process similar to existing concerns about Antarctica, Greenland
3. For the love of trees: Book tells all about forest hydrology, biogeochemistry
4. The truth about cats and dogs: Pets are good for mental health of everyday people
5. Study offers new clues about hereditary spastic paraplegia
6. The impact of candidates statements about climate change on electoral success
7. Picky pollinators: Native bees are selective about where they live and feed
8. USC researchers find new clues about protein linked to Parkinsons disease
9. Plants teach humans a thing or two about fighting diseases
10. Experts to speak about growth of NYC and implications for transportation policy and infrastructure
11. Bacterial roundabouts determine cell shape
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/17/2014)... in many serious conditions such as heart disease, epilepsy ... drug therapies. Unfortunately, there is still much scientists do ... fresh and unexpected insight into the structure of sodium ... molecules - which are responsible for ,fine-tuning, the activity ... most recent edition of the Journal of Biological ...
(Date:4/17/2014)... have detected new early-warning signs of the potential loss ... far-reaching implications for the diagnosis and treatment of diabetic ... Americans. , "We had not expected to see such ... said Ann Elsner, professor and associate dean in the ... study. "We set out to study the early signs, ...
(Date:4/17/2014)... forests are chock full of wild animals and plant ... of fungi are churning away in the soil, decomposing ... Despite the vital role these fungi play in ecological ... Stanford-led team of scientists has generated a genetic map ... America. The work was published this week in the ...
Breaking Biology News(10 mins):Structure of sodium channels different than previously believed 2New technique detects microscopic diabetes-related eye damage 2New technique detects microscopic diabetes-related eye damage 3Stanford biologists help solve fungal mysteries 2Stanford biologists help solve fungal mysteries 3
... deepest oceans of the world would appear to be shark ... team of researchers, led by the University of Aberdeen, reveal ... 3,000 metres. , Sharks occur throughout the world's oceans and ... the abyss and beyond throughout the largest environment on the ...
... The study was conducted by researchers from Scripps Research; ... National Taiwan University. It is being published today in ... , Chi-Huey Wong is currently the Ernest W. Hahn ... Biology and directs the Scripps Research lab heading the ...
... have assembled a new picture of a 35-million-year-old fossil ... of sound. , By painstakingly measuring hundreds of specimens ... famous fossil beds of Egypt's Fayum Province, the researchers ... only males -- had oversized, swollen lower jaws shaped ...
Cached Biology News:Oceans are 70 percent shark free 2Enzyme inhibitors block replication of SARS virus 2'Banana-jawed' fossil mammal linked to rare sound-producing skill 2'Banana-jawed' fossil mammal linked to rare sound-producing skill 3'Banana-jawed' fossil mammal linked to rare sound-producing skill 4
(Date:1/15/2014)... Two champions of science, technology, engineering, ... an annual competition for middle and high school students ... STEM study. The competition presents students with real-world problems ... Aptitude, Mathematics, and Sciences is a program administered ...
(Date:1/15/2014)... (PRWEB) January 15, 2014 Freeslate, ... solutions, today announced that Lupin Limited, one of India’s ... CM Protégé PharmD System for high throughput ... India, is focused on a wide range of quality, ...
(Date:1/14/2014)... Washington, DC (PRWEB) January 14, 2014 ... session for Thursday, January 23, 2014 at 2pm EST ... Actionable Knowledge.” The topic focuses on how technology can ... mission critical decisions for government agencies. The online webinar ...
(Date:1/14/2014)... 14, 2014 EquitiesIQ, a leading informational ... ALQA). Alliqua is an emerging biomedical company acquiring, developing, ... care market. , Free report download: http://equitiesiq.com/reports/alliqua/ ... seasoned management team and Board, which launched the company’s ...
Breaking Biology Technology:Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 2Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 3Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 4Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 5Lupin Selects Freeslate’s CM Protégé PharmD System to Accelerate Polymorph Screening for Drug Development 2Lupin Selects Freeslate’s CM Protégé PharmD System to Accelerate Polymorph Screening for Drug Development 3Webcast - Natural Language Processing: Converting Raw Data into Actionable Knowledge – Hosted by Carahsoft and CDS Federal Services 2EquitiesIQ Initiates Coverage of Alliqua, Inc. 2EquitiesIQ Initiates Coverage of Alliqua, Inc. 3
... May 18, 2011 Biomerix Corporation and Cellon today ... 3D Scaffold , a novel three-dimensional tissue scaffold. Under ... 3D Scaffold to research institutions across Europe. ... polyurethane , the Biomerix 3D Scaffold is designed to ...
... at Paterson Public School No. 5 received a brand ... 200 volunteers from Roche, New Jersey Community Development Corporation ... KaBOOM!. The new playground provides the 1,300-plus students enrolled ... children living in the neighborhood with a safe place ...
... 2011 Ludwig Institute for Cancer Research LTD (LICR) and ... to expand development of Polaris, novel cancer drug, pegylated arginine ... of the amino acid arginine. As part ... potential of ADI-PEG 20 as a cancer therapy and aim ...
Cached Biology Technology:Biomerix Corporation Reaches European Distribution Agreement with Cellon S.A. 2Designed by Kids, Built by Volunteers: Roche, New Jersey Community Development Corporation, and KaBOOM! Build New Playground in Just One Day for Paterson Public School Children 2Designed by Kids, Built by Volunteers: Roche, New Jersey Community Development Corporation, and KaBOOM! Build New Playground in Just One Day for Paterson Public School Children 3Designed by Kids, Built by Volunteers: Roche, New Jersey Community Development Corporation, and KaBOOM! Build New Playground in Just One Day for Paterson Public School Children 4Ludwig Institute for Cancer Research and Polaris Group Form Collaboration to Expand Development of Polaris' Novel Cancer Drug, ADI-PEG 20 2Ludwig Institute for Cancer Research and Polaris Group Form Collaboration to Expand Development of Polaris' Novel Cancer Drug, ADI-PEG 20 3Ludwig Institute for Cancer Research and Polaris Group Form Collaboration to Expand Development of Polaris' Novel Cancer Drug, ADI-PEG 20 4
... perfomance data acquisition interface. All the functionality ... on-board processor, increased memory and more available ... Power1401 also inlcudes an option for programmable ... standard 16 to 48 waveform inputs and ...
... designed to provide a thin film-like barrier when a ... This barrier creates the proper surface tension to ... the slide. PAP Pen contains a special formulation ... can be removed, if desired, by xylene after the ...
...
The BioLogic Maximizer mixer is for use with the Maximizer valve system. The mixer improves gradient quality by mixing the output of the BioLogic DuoFlow workstation pumps....
Biology Products: