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:8/21/2014)... to ignore, but they are the ultimate source of ... are increasingly dependent on algae, too, to suck up ... to the bottom of the ocean. Now, by using ... have evidence showing that viruses infecting those algae are ... when all else stays essentially the same, and this ...
(Date:8/21/2014)... MELBOURNE, Fla. , Aug. 21, 2014 ...  announced that it has agreed to a ... Orlando,s fastest growing Certified ... make  Gabriel Health Institute  an exclusive member ... a result, Binary Biometrics will improve its ...
(Date:8/21/2014)... from Beth Israel Deaconess Medical Center (BIDMC ) are ... Influential Scientific Minds 2014," a comprehensive list ... resource for science metrics and research performance analysis. ... influential "are performing and publishing work that their peers ... according to a Thomson Reuters statement. Researchers were identified ...
Breaking Biology News(10 mins):Viruses take down massive algal blooms, with big implications for climate 2LiveScan Provider Binary Biometrics Announces Partnership with Preeminent CNA School, Gabriel Health Institute to Expand Services in Orlando Region 2LiveScan Provider Binary Biometrics Announces Partnership with Preeminent CNA School, Gabriel Health Institute to Expand Services in Orlando Region 3BIDMC researchers named among 'the most influential scientific minds' 2BIDMC researchers named among 'the most influential scientific minds' 3
... spiders, and other venomous creatures, the "business end," or active ... of a protein that is most likely to undergo rapid ... Gurion University in Israel. Understanding these evolutionary forces can help ... and may also aid in the design of novel synthetic ...
... world, allocating limited health care resources as effectively and ... address that need, systems engineers at the Georgia Institute ... nations improve supply chain decisions related to the distribution ... are also forecasting what health care services would be ...
... Extensive ongoing research on biotic invasions around the world ... research in the United States shows how using improved ... plant species changes the understanding of patterns of species ... was published in the open access journal ...
Cached Biology News:Molding the business end of neurotoxins 2Engineers improve allocation of limited health care resources in resource-poor nations 2Engineers improve allocation of limited health care resources in resource-poor nations 3Human population the primary factor in exotic plant invasions in the United States 2
(Date:8/22/2014)... New York (PRWEB) August 22, 2014 ... one of the interesting and challenging endeavors as ... renders highly impervious properties to the foreign substances. ... as possibility of self medication and minimal use ... low molecular weight drugs and provides specific targeting ...
(Date:8/22/2014)... 2014 The AMA is pleased to ... in Alaska that Alaska Governor Sean Parnell has signed ... defining public use of Unmanned Aircraft Systems and the ... Bill 255states that it is, “An Act relating to ... an unmanned aircraft system.” It defines State of Alaska ...
(Date:8/21/2014)... Aug. 21, 2014  BioSpecifics Technologies Corp. (NASDAQ: ... first in class collagenase-based products marketed as XIAFLEX ... the U.S. and XIAPEX ® in the ... a randomized, double-blind Phase 2a study of CCH ... fibrosclerotic panniculopathy. The results showed that all three ...
(Date:8/21/2014)... 21, 2014 2014 Deep ... is a professional and in-depth research report ... provides basic Seaweed Fertilizer information, including Seaweed ... structure as well as industry overview. This ... domestic market as well as global industry ...
Breaking Biology Technology:Ocular Drug Delivery Technologies Market: Global Industry Analysis, Size, Share, Growth, Trends and Forecast 2014 - 2020 2Ocular Drug Delivery Technologies Market: Global Industry Analysis, Size, Share, Growth, Trends and Forecast 2014 - 2020 3Ocular Drug Delivery Technologies Market: Global Industry Analysis, Size, Share, Growth, Trends and Forecast 2014 - 2020 4State of Alaska Signs Unmanned Aircraft Systems Bill 2BioSpecifics Technologies Corp. Announces Positive Data from Phase 2a Study of CCH for Treatment of Cellulite 2BioSpecifics Technologies Corp. Announces Positive Data from Phase 2a Study of CCH for Treatment of Cellulite 3BioSpecifics Technologies Corp. Announces Positive Data from Phase 2a Study of CCH for Treatment of Cellulite 4BioSpecifics Technologies Corp. Announces Positive Data from Phase 2a Study of CCH for Treatment of Cellulite 5Internationals Seaweed Fertilizer Industry 2014 Development Trend Analysis in New Research Study at DeepResearchReports.com 2Internationals Seaweed Fertilizer Industry 2014 Development Trend Analysis in New Research Study at DeepResearchReports.com 3
... ... -, SOUTH ... of a recent Harris,Interactive(R) survey, showing that an overwhelming majority of Tracleer,patients ... their knowledge of pulmonary arterial hypertension (PAH) and,Tracleer have improved due to ...
... /PRNewswire-FirstCall/ - Helix BioPharma Corp.,(TSX, FSE: "HBP") today announced financial results ... HIGHLIGHTS ---------- - Subsequent to the ... CDN$16.9 million private placement of common shares, subject to ... with Dr. Donald H. Segal remaining the ...
... 17 IRIDEX,Corporation (Nasdaq: IRIX ) today ... Company as Chief Financial Officer effective January 2, ... Officer and Vice President,of Finance for NextHop Technologies, ... as Vice President of Finance and Chief,Financial Officer ...
Cached Biology Technology:Survey of More than 600 Patients Treated with Tracleer(R) (bosentan) Reveals Actelion Sure Steps(R) Patient Support Program Provides Valuable Educational Information 2Survey of More than 600 Patients Treated with Tracleer(R) (bosentan) Reveals Actelion Sure Steps(R) Patient Support Program Provides Valuable Educational Information 3Survey of More than 600 Patients Treated with Tracleer(R) (bosentan) Reveals Actelion Sure Steps(R) Patient Support Program Provides Valuable Educational Information 4Helix BioPharma announces Q1 2008 financial results 2Helix BioPharma announces Q1 2008 financial results 3Helix BioPharma announces Q1 2008 financial results 4Helix BioPharma announces Q1 2008 financial results 5Helix BioPharma announces Q1 2008 financial results 6Helix BioPharma announces Q1 2008 financial results 7Helix BioPharma announces Q1 2008 financial results 8Helix BioPharma announces Q1 2008 financial results 9Helix BioPharma announces Q1 2008 financial results 10Helix BioPharma announces Q1 2008 financial results 11IRIDEX Announces James Mackaness Will Be Chief Financial Officer 2
... The CHEMICON APO-BRDU Kit is ... labeling DNA breaks and total cellular DNA ... The kit contains the instructions and ... including; positive and negative control cells for ...
... overlay agarose, is a low melting point ... to secure IPG strips in place for ... incorporated to allow monitoring of electrophoresis runs. ... melting point agarose in 1x Tris, glycine, ...
... cell is an apparatus dedicated to general ... agarose slab gels. The cell includes the ... tray, 5 glass plates, 50 sheets of ... templates, and instructions. Dimensions are 21 x ...
... range of next-generation features into a small-footprint ... for flexible laboratory solutions. It puts every ... dilution, dispensing, and integrations into a ... flexible as it is efficient and economical. ...
Biology Products: