HOME >> BIOLOGY >> NEWS
Modern-day butterflies 'invented' by bats

The evolutionary development of modern-day butterflies was so profoundly influenced by insect-eating bats that they could be credited with "inventing" day-flight in butterflies, suggests one University of Toronto researcher.

In a paper to be published in the Jan. 20 edition of Nature, Carleton University biology post-doctoral student Jayne Yack and University of Toronto at Mississauga zoology professor James Fullard studied ultrasonic hearing in nocturnal butterflies. They then examined the anatomies and behaviours of day-flying butterflies. The scientists suggest that bats have had such an impact on day- and night-flying butterflies that their defence and communication systems have specifically evolved to protect them from these natural predators.

"Bats are major predators of night-flying insects, and this research points to the intense pressure on all nocturnal insects to evolve methods of detecting and avoiding insect-eating bats," says co-author Fullard. "With respect to butterflies, the majority of them switched their activity from night to day, thereby avoiding bats altogether. But for some rare species of nocturnal butterflies, the evolution of ultrasound-sensitive ears means that these insects have developed and been able to use this sensory defence to stay alive during the night."

On Barro Colorado Island in Panam, Yack and Fullard found night-flying butterflies that possess ears on their wings that detect calls used by bats to locate and track prey. When the researchers exposed the nocturnal butterflies to simulated ultrasonic stimulus - such as the type given off by bats - the insects exhibited bat-evasion flight manoeuvres characterized by steep dives, climbs or up- or down loops and spirals. Until now, it was believed that ultrasonic hearing was a common defence and communication mechanism for moths and other nocturnal insects but not butterflies.

"The discovery of ultrasonic hearing in this species of night-flying butterflies in Pan
'"/>

Contact: Janet Wong
jf.wong@utoronto.ca
416-978-6974
University of Toronto
19-Jan-2000


Page: 1 2

Related biology news :

1. Quarries may be last chance for many rare European butterflies
2. Mexican reserves fail to protect monarch butterflies
3. Monarch butterflies, corn pollen coexist in cornfields
4. Of gallflies, bees, mosquitoes, and butterflies: researchers to discuss insects
5. Do wildlife corridors work? Studying butterflies and fragments of open space

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:4/19/2017)... New York , April 19, 2017 ... competitive, as its vendor landscape is marked by the ... the market is however held by five major players ... Safran. Together these companies accounted for nearly 61% of ... of the leading companies in the global military biometrics ...
(Date:4/13/2017)... According to a new market research report "Consumer IAM Market by Solution ... Authentication Type, Deployment Mode, Vertical, and Region - Global Forecast to 2022", ... 14.30 Billion in 2017 to USD 31.75 Billion by 2022, at a ... ... MarketsandMarkets Logo ...
(Date:4/11/2017)... , April 11, 2017 NXT-ID, ... security technology company, announces the appointment of independent Directors Mr. ... to its Board of Directors, furthering the company,s corporate ... ... NXT-ID, we look forward to their guidance and benefiting from ...
Breaking Biology News(10 mins):
(Date:10/10/2017)... ... October 10, 2017 , ... ... advancing targeted antibody-drug conjugate (ADC) therapeutics, today confirmed licensing rights that give ... Liposomal Nanoparticle), a technology developed in collaboration with Children’s Hospital Los Angeles ...
(Date:10/10/2017)... ... October 10, 2017 , ... Dr. Bob Harman, founder and CEO of ... Club. The event entitled “Stem Cells and Their Regenerative Powers,” was ... Dr. Harman, DVM, MPVM was joined by two human doctors: Peter B. Hanson, M.D., ...
(Date:10/10/2017)... 2017 SomaGenics announced the receipt of a ... RealSeq®-SC (Single Cell), expected to be the first commercially ... microRNAs) from single cells using NGS methods. The NIH,s ... accelerate development of approaches to analyze the heterogeneity of ... techniques for measuring levels of mRNAs in individual cells ...
(Date:10/10/2017)... ... October 10, 2017 , ... The ... prestigious awards honoring scientists who have made outstanding contributions to analytical ... during Pittcon 2018, the world’s leading conference and exposition for laboratory science, which ...
Breaking Biology Technology:
Cached News: