Navigation Links
Female butterflies go for sparkle -- not size -- when choosing to mate

erfly species, females make the ultimate decision about whether to mate.

The UB researchers altered wing-pattern elements through carefully painting the wings or by pairing males displaying traits of different size and color. They then tested female preference for wing size, eyespot size, quantity of eyespots on the wing, eyespot and pupil color, and pupil reflectivity.

"Once we found a trait that appeared to be important, we then would exaggerate it or reduce it to pin it down," said Monteiro.

None of the variations induced on the ventral side appeared to have any affect on the females' mating decisions, leading the researchers to conclude that the ventral side of the wing does not play a role in the decision making.

But when the researchers painted the white pupil on the dorsal side with black paint, thereby eliminating the pupil, these males were much less desirable to females by a ratio of two to one, demonstrating clearly that females preferred the presence of the white pupil.

However, a large white pupil, about twice the diameter of a natural pupil, also was not found desirable by females, indicating strong sensitivity to a set of rather narrowly defined features, such as eyespot pupils that measure approximately half of one millimeter.

The most conclusive finding resulted when the researchers painted the white pupils in male eyespots on the dorsal side with a plant extract, rutin, which maintained the pupils' whiteness, but eliminated their ultraviolet reflectivity.

"When there was no UV reflectivity, which butterflies can see, females registered a strong distaste," said Monteiro. "Selection against the absence of UV reflectivity was as strong as selection against the absence of a pupil altogether."

The reasons for this phenomenon are complex, but Robertson noted that the UV reflectivity may be important in what is known as photic stimulation -- a flashing light effect -- during the series of eve
'"/>

Source:University at Buffalo


Page: 1 2 3

Related biology news :

1. Female sex hormones play a vital role in defense against sexually transmitted diseases
2. Female volunteers prepare for a second bedrest
3. Female guppies risk their lives to avoid too much male attention
4. Female birds boost up their eggs when hearing sexy song
5. Female pronghorns choose mate based on substance as well as show
6. Update on census of worlds most endangered cat -- Female Amur leopard found dead
7. Female Antarctic seals give cold shoulder to local males
8. Female chimps keep the bullies at bay
9. Female-led infanticide in wild chimpanzees
10. How monarch butterflies are wired for navigation
11. Expanding forests darken the outlook for butterflies, study shows
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Female butterflies for sparkle not size when choosing mate

(Date:8/12/2015)... August 12, 2015 As the ... payment innovation and advanced biometrics technology is accelerating beyond ... consumers rely on using their credit cards, the digital ... future for payment services led by companies in the ... :  Google, Inc. (NASDAQ: GOOG ), Apple Inc. ...
(Date:8/12/2015)... , Aug. 12, 2015  Synaptics Inc. ... human interface solutions, today announced that four of ... Match-in-Sensor solution, have officially been named FIDO Certified™ ... part of the certification, Synaptics, Natural ID™ fingerprint ... Universal Authentication Framework (UAF) standard and are interoperable ...
(Date:8/10/2015)... and TELTOW, Germany , ... Instruments (SMI), a world leader in Eye Tracking ... completion of its OEM Eye Tracking Platform for integration ... Tracking Platform contains reference designs for seamless integration of ... systems, virtual reality HMDs and augmented reality smart glasses. ...
Breaking Biology News(10 mins):Digital Wallet Devices & Mobile Payment Management Services Gain a Distinct Advantage in the Digital Payment Evolution as Demand Continues to Grow 2Digital Wallet Devices & Mobile Payment Management Services Gain a Distinct Advantage in the Digital Payment Evolution as Demand Continues to Grow 3Digital Wallet Devices & Mobile Payment Management Services Gain a Distinct Advantage in the Digital Payment Evolution as Demand Continues to Grow 4Digital Wallet Devices & Mobile Payment Management Services Gain a Distinct Advantage in the Digital Payment Evolution as Demand Continues to Grow 5Digital Wallet Devices & Mobile Payment Management Services Gain a Distinct Advantage in the Digital Payment Evolution as Demand Continues to Grow 6Synaptics Announces FIDO Certification of Natural ID Fingerprint Solutions 2Synaptics Announces FIDO Certification of Natural ID Fingerprint Solutions 3SMI Completes OEM Eye Tracking Platform to Cover All Consumer Displays 2SMI Completes OEM Eye Tracking Platform to Cover All Consumer Displays 3
... defeat is influenced by his or her stance on ... of the most recent presidential and congressional elections. ... candidates, statements on climate change translated into real votes," ... science at Stanford, who led two new studies ...
... Administration (FDA) has awarded the Georgia Institute of ... Saint Joseph,s Translational Research Institute (SJTRI) a two-year, ... medical devices focused on the special needs of ... Pediatric Device Consortium, which will provide assistance with ...
... October 2011, Singapore A new biotech company has ... (NUS), to provide research tools, targeting the international malaria ... founded by two NUS faculty members: Dr Martin Lear ... Tan from the NUS Department of Microbiology. The company ...
Cached Biology News:Stanford researchers examine impact of 'green politics' on recent national elections 2Stanford researchers examine impact of 'green politics' on recent national elections 3FDA grant launches Atlanta Pediatric Device Consortium 2FDA grant launches Atlanta Pediatric Device Consortium 3FDA grant launches Atlanta Pediatric Device Consortium 4Launch of BioLynx provides a boost for the international malaria research community 2
(Date:8/26/2015)... /PRNewswire/ - iCo Therapeutics ("iCo" or "the Company") (TSX-V: ... the quarter ended June 30, 2015. Amounts, unless ... presented under International Financial Reporting Standards ("IFRS"). ... our Oral Amp B program, rapidly advancing towards ... Andrew Rae , President & CEO of iCo ...
(Date:8/26/2015)... 2015  Platform therapeutic company Symic Biomedical, Inc. ... $1.5M Phase II SBIR grant from the National ... therapeutic agent to reduce arteriovenous fistula (AVF) failures, ... renal disease (ESRD) patients undergoing hemodialysis. The two-year ... and Digestive and Kidney Diseases (NIDDK), will allow ...
(Date:8/26/2015)... , August 26, 2015 After litigating ... Europlasma NV relating to P2i United States ... their dispute in the United States ... the part of either party. As a result of the ... of California dismissed the case without ...
(Date:8/25/2015)... 25, 2015   WuXi PharmaTech (Cayman) Inc. (NYSE: ... technology platform company serving the pharmaceutical, biotechnology, and medical ... Hong Kong Exchange Stock Code: 0950), a research-based biopharmaceutical ... with 20 years of operations in China ... signed an agreement whereby WuXi,s Laboratory Testing Division (LTD) ...
Breaking Biology Technology:iCo Therapeutics Announces Second Quarter 2015 Financial Results 2iCo Therapeutics Announces Second Quarter 2015 Financial Results 3Symic Biomedical Awarded $1.5MM NIH Phase II SBIR Grant to Develop its Proteoglycan Mimetic Therapeutics to Reduce Vascular Access Failures in ESRD 2Symic Biomedical Awarded $1.5MM NIH Phase II SBIR Grant to Develop its Proteoglycan Mimetic Therapeutics to Reduce Vascular Access Failures in ESRD 3P2i Settles United States Litigation 2WuXi PharmaTech to Be Exclusive Supplier of Laboratory Testing Services to Lee's Pharm 2WuXi PharmaTech to Be Exclusive Supplier of Laboratory Testing Services to Lee's Pharm 3
... Board: KDUS) announced today financial results for the first,quarter ended ... 2008 were $100,000, compared to,$100,000 for the same period in ... compared to net loss of $558,469 for the same period ... a decrease in general,and administrative expenses of $47,207 and the ...
... Pharmaceutical Services, Inc.,(JOM), a service coordinator that provides ... Ortho Biotech, L.P., was notified May 6,2008, that ... PROCRIT(R) (epoetin alfa) and REMICADE(R) (infliximab) was,stolen while ... in,Kentucky to a specialty distributor. This incident has ...
... MedImmune today announced,that researchers will present eight ... Annual Meeting of the American Thoracic Society, ... Canada. Presentations are designed to showcase,MedImmune,s biologics ... innovative solutions that may one,day help patients ...
Cached Biology Technology:Cadus Reports First Quarter 2008 Results 2Cadus Reports First Quarter 2008 Results 3Ortho Biotech, L.P. and Centocor, Inc. Alert Authorized Distributors and Prescribing Physicians About Stolen Product 2Ortho Biotech, L.P. and Centocor, Inc. Alert Authorized Distributors and Prescribing Physicians About Stolen Product 3Ortho Biotech, L.P. and Centocor, Inc. Alert Authorized Distributors and Prescribing Physicians About Stolen Product 4Depth of MedImmune's Respiratory Disease Research Program Highlighted at Annual Meeting of the American Thoracic Society 2
... Satellite Thermal Cycler (MBS) is ... for medium to high throughput ... the latest in satellite block ... PC control, resulting in a ...
... 2 Block MBS Start up kit. Includes ... and choice of 2 MultiBlock satellite ... 30 blocks. User friendly software. ... Adjustable height heated lid. Outstanding uniformity. ...
... of VARIOMAG Magnetic Stirrers operate without any ... mechanical bearings, making VARIOMAG Magnetic Stirrers 100% ... inductive drive can be hermetically sealed, making ... This is why VARIOMAG Magnetic Stirrers are ...
... Enzymatic method stops PCR carry-over ... ,Designed to degrade PCR products from ... nucleic acid templates, which improves amplification ... core reagents and GeneAmp instrument systems ...
Biology Products: