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:3/6/2017)... 6, 2017 Mintigo , the ... announced Predictive Sales Coach TM , its new ... intelligence into Salesforce. This unique AI application will ... organizations with deep knowledge of their customers and ... engagement. Predictive Sales Coach extends Mintigo,s existing customer ...
(Date:3/2/2017)... -- Australian stem cell and regenerative medicine company, ... agreement with the Monash Lung Biology Network, a consortia ... Department of Pharmacology at Monash University, Melbourne ... support the use of Cymerus™ mesenchymal stem cells (MSCs) ... is a chronic, long term lung condition recognised by ...
(Date:2/28/2017)...  EyeLock LLC, ein marktführendes Unternehmen im Bereich ... Lösung zur Iris-Erkennung auf der neuesten Mobilplattform ... dem Mobile World Congress 2017 (27. Februar ... 3, Stand 3E10, vorstellen. Der ... – eine Kombination aus Hardware, Software und ...
Breaking Biology News(10 mins):
(Date:3/23/2017)... 23, 2017 According to a report by ... market is fragmented due to the presence of a large pool of ... Thermo Fisher , and Sigma-Aldrich, compete with each other in this ... held more than 76% of this market in 2016.  ... As of now, a large ...
(Date:3/23/2017)... ... 23, 2017 , ... Advanced Polymer Monitoring Technologies (APMT), a ... “Sig” Floyd as Vice President ? Global Business Development. Dr. Floyd will lead ... Floyd’s career has spanned 30 years in the chemicals and equipment industries. Sig ...
(Date:3/22/2017)... COPENHAGEN, Denmark , March 22, 2017 /PRNewswire/ ... that utilizes its innovative TransCon technology to address ... announced financial results for the full year ended ... a significant year for our company as we ... become a leading, integrated rare disease company with ...
(Date:3/22/2017)... JERUSALEM , March 22, 2017 ... ( www.oramed.com ), ... of oral drug delivery systems, announced today that ... Officer, will deliver a presentation titled, "Oral Insulin ... upcoming Cambridge Healthtech Institute,s Oligonucleotide and Peptide Therapeutics ...
Breaking Biology Technology: