Navigation Links
Too many relatives ruining your picnic? Be glad the flies don't invite their cousins
Date:4/18/2011

AMES, Iowa When your family members gather at a picnic in your backyard, there may be 10 to 20 people -- maybe more -- enjoying your barbecue.

When flies visit your party, be glad they don't bring their entire family.

Houseflies have more than 152,000 cousins. And those are just the ones we know about.

An Iowa State University researcher is one of a team of scientists who have recently researched the fly family tree -- one of the most complicated in the animal world.

"It really isn't a tree, it's sort of a bush," said Gregory Courtney, professor of entomology, explaining the complex relationships between fly relatives.

"Because of this, and because the history of flies extends more than 260 million years, it's difficult figuring out the relationships between this branch and that branch," he added.

The problem with tracking fly evolution is that every so often, a species of fly will branch into two different species, and then those two will split again, and again and so forth, he said.

If a series of these branches or dichotomous splits occurs over a brief period of time, the result will be a rapid radiation of new flies and an evolutionary tree that may look more like a bush.

Based on the research of Courtney and his colleagues, at least three episodes of rapid radiation have occurred in the history of flies.

"[The fly family tree] probably involves dichotomous splits," said Courtney. "But we can't always resolve these when there are lots of dichotomous splits going on at the same time."

"One of the nice results of this research was confirmation that a number of episodic radiations may have occurred. That explains some of the difficulty we've had in resolving relationships of different types of flies," he added.

One of Courtney's favorite flies is a group called mountain midges (Deuterophlebia), which the current study suggests is the oldest group of flies, and is positioned near the base of the fly family tree.

He is also an expert on the anatomy, or morphology, of different groups of flies.

That background made him a good choice to help the team decipher the relationships among flies.

"Morphology is just one piece of information that we use to try to figure out relationships," he said. "We looked at a whole suite of morphological characteristics about 400 characteristics for this analysis."

From its beginning, the fly family tree has been continuously evolving. Courtney says there are now more than 152,000 species of flies that have been described and named, and least that many more haven't yet been discovered and described.


'/>"/>

Contact: Gregory Courtney
gwcourt@iastate.edu
515-294-4017
Iowa State University
Source:Eurekalert  

Related biology news :

1. Seedlings thrive with distant relatives, seeds with close family
2. New research shows dolphin by-catch includes genetic relatives
3. New book reviews research on p53 -- the guardian of the genome -- and its relatives
4. Instant evolution in whiteflies: Just add bacteria
5. In fireflies, flightless females lose out on gifts from males
6. Could mutant flies give epilepsy sufferers greater peace of mind?
7. Wheat resistance genes failing, new approach needed to stop flies
8. Texas A&M study finds courtship affects gene expression in flies
9. Wildflower colors tell butterflies how to do their jobs
10. Orchid tricks hoverflies
11. Study finds monarch butterflies use medicinal plants to treat offspring for disease
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Too many relatives ruining your picnic? Be glad the flies don't invite their cousins
(Date:6/3/2016)... Das DOTM (Department ... hat ein 44 Millionen $-Projekt ... einschließlich Personalisierung, Registrierung und IT-Infrastruktur, an Decatur ... Implementierung von Identitätsmanagementlösungen. Zahlreiche renommierte internationale Anbieter ... aber Decatur wurde als konformste und innovativste ...
(Date:5/24/2016)... 24, 2016 Ampronix facilitates superior patient care by providing unparalleled technology to ... display is the latest premium product recently added to the range of products distributed ... ... ... Imaging- LCD Medical Display- Ampronix News ...
(Date:5/3/2016)... 2016  Neurotechnology, a provider of high-precision biometric ... Biometric Identification System (ABIS) , a complete system ... ABIS can process multiple complex biometric transactions with ... fingerprint, face or iris biometrics. It leverages the ... MegaMatcher Accelerator , which have been used ...
Breaking Biology News(10 mins):
(Date:6/27/2016)... 2016  Liquid Biotech USA ... a Sponsored Research Agreement with The University of ... from cancer patients.  The funding will be used ... with clinical outcomes in cancer patients undergoing a ... be employed to support the design of a ...
(Date:6/24/2016)... TOKYO , June 24, 2016  Regular discussions on ... to take place between the two entities said Poloz. ... in Ottawa , he pointed to the ... and the federal government. ... Poloz said, "Both institutions have common economic goals, why not ...
(Date:6/24/2016)... Brooklyn, NY (PRWEB) , ... June 24, 2016 , ... ... 15mm, machines such as the Cary 5000 and the 6000i models are higher end ... height is the height of the spectrophotometer’s light beam from the bottom of the ...
(Date:6/23/2016)... ... June 23, 2016 , ... Mosio, a leader in clinical ... Patient Recruitment and Retention Tips.” Partnering with experienced clinical research professionals, Mosio revisits ... tips, tools, and strategies for clinical researchers. , “The landscape of how patients ...
Breaking Biology Technology: