Navigation Links
Tufts researchers shine light on firefly mysteries

This summer, in a darkened meadow west of Boston, Tufts University biologists are continuing to shine new light on the frenzied love life of fireflies.

For the first time, researchers will explore the question of whether male fireflies' flashing light ?previously shown in one species to indicate superior physical and genetic quality ?has evolved in another species to provide misinformation to prospective mates. In other words, are some male fireflies lying in order to find romance?

"If female mate choice is adaptive, we would expect that the more attractive males would provide females with greater material benefits and/or genetic benefits," said Sara Lewis, associate professor of biology in the School of Arts & Sciences. "On the other hand, sexual conflict theory predicts that male signals may evolve to provide uninformative or even misleading cues about male quality."

Funded by the National Science Foundation and a Tufts Faculty Research Award, such research may ultimately help further our understanding of human communication, signal evolution, and biomedicine.

In previous research published in 2003, Lewis and her then-doctoral student Christopher Cratsley found that female fireflies of one species (Photinus ignitus) are strongly attracted to males who give longer flashes because that signal indicates males that can provide better nutrition for their offspring. But the Tufts research team has recently found evidence suggesting that the preferred males in a related species (Photinus greeni) do not provide any such benefit.

"It's possible that the male flash pattern may have evolved to provide misinformation," Lewis explained. "Although males and females both try to maximize their reproductive output and contribute to the next generation, this is not necessarily a co-operative venture and conflict often arises in nature.

"For example, in Drosophila fruitflies, males' efforts to maximize their sperm's competitive abil ity have led to the evolution of chemicals produced by their reproductive glands. These chemicals kill the sperm of other males that have mated with the same female but they are also toxic to the female -- hence conflict."

In a collaborative research effort with insect physiologist and Tufts postdoctoral research fellow Dr. William Woods, Lewis is also examining other questions, such as how much energy the males' "flashy" courtship displays require--an effort that will involve laboratory testing in tiny respirometry chambers to measure the carbon dioxide produced during flashing and resting.


'"/>

Source:Tufts University


Related biology news :

1. NYU researchers simulate molecular biological clock
2. Vital step in cellular migration described by UCSD medical researchers
3. ASU researchers finds novel chemistry at work to provide parrots vibrant red colors
4. UCSD researchers maintain stem cells without contaminated animal feeder layers
5. Why do insects stop breathing? To avoid damage from too much oxygen, say researchers
6. New protein discovered by Hebrew University researchers
7. First real-time view of developing neurons reveals surprises, say Stanford researchers
8. Agilent Technologies releases automated literature search tool for biology researchers
9. Self-assembled nano-sized probes allow Penn researchers to see tumors through flesh and skin
10. Yale researchers identify molecule for detecting parasitic infection in humans
11. US life expectancy about to decline, researchers say
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:8/15/2017)...   ivWatch LLC , a medical device company focused on ... receipt of its ISO 13485 Certification, the global standard for medical ... Standardization (ISO®). ... Continuous Monitoring device for the early detection of IV infiltrations. ... "This is an important milestone for ivWatch, as ...
(Date:6/30/2017)... ARLINGTON, Va. , June 30, 2017 /PRNewswire-USNewswire/ ... a leading developer and supplier of face and ... the ATA Featured Product provider program. ... created an innovative way to monitor a driver,s ... benefit greatly from being able to detect fatigue ...
(Date:6/14/2017)... 15, 2017  IBM (NYSE: IBM ) is introducing several ... dedicated to developing collaboration between startups and global businesses, taking ... During the event, nine startups will showcase the solutions they ... industries. France is ... with a 30 percent increase in the number of startups ...
Breaking Biology News(10 mins):
(Date:10/10/2017)... (PRWEB) , ... October 10, ... ... development-stage cancer-focused pharmaceutical company advancing targeted antibody-drug conjugate (ADC) therapeutics, today confirmed ... targeted HPLN (Hybrid Polymerized Liposomal Nanoparticle), a technology developed in collaboration with ...
(Date:10/10/2017)... (PRWEB) , ... October 10, 2017 , ... Dr. Bob ... at his local San Diego Rotary Club. The event entitled “Stem ... CA and had 300+ attendees. Dr. Harman, DVM, MPVM was joined by two ...
(Date:10/10/2017)... 10, 2017 SomaGenics announced the receipt of ... develop RealSeq®-SC (Single Cell), expected to be the first ... (including microRNAs) from single cells using NGS methods. The ... to accelerate development of approaches to analyze the heterogeneity ... "New techniques for measuring levels of mRNAs in individual ...
(Date:10/10/2017)... (PRWEB) , ... October 10, 2017 , ... ... recipients of 13 prestigious awards honoring scientists who have made ... in a scheduled symposium during Pittcon 2018, the world’s leading conference and exposition ...
Breaking Biology Technology: