HOME >> BIOLOGY >> NEWS
Insect yields clues to evolution of species

(Santa Barbara, Calif.) Studies of a California insect, the walking stick, are helping to illuminate the process of evolution of new species, according to research published in this weeks issue of Nature.

The insect, Timema cristinae, named for Cristina Sandoval, a researcher at the University of California, Santa Barbara who was the first to discover it, is found in the Santa Ynez Mountains on two types of plants. Essentially the walking sticks have evolved to look like a leaf of the plant they inhabit. Birds and lizards are its main predators.

"Youve got to have very good camouflage to trick a bird," said Sandoval, noting that birds have very good vision and are visual predators.

The insect exhibits two genetically determined color patterns. The unstriped insect is more commonly found on the plant Ceanothus spinosus (commonly called blue lilac) and a striped design is more common on those insects inhabiting the plant Adenostoma fasciculatum (commonly called chemise).

According to the study, the research provides the first clear demonstration that host-plant adaptation can promote the parallel evolution of reproductive isolation. The researchers tested hundreds of insects in the lab and found that those inhabiting the same type of plant were more likely to mate with each other than they were to mate with those residing on different plants -- even though they are the same species. The research indicates that habitat may play a crucial role in the early stages of separation into different species (speciation).

"We dont know why, but something about adapting to a host plant smell, size, or a combination of things drives this reproductive isolation," said Sandoval. "This is an example of speciation in process."

Additionally, information from DNA sequences revealed that such divergence in mating preferences and morphology has evolved numerous times in this species, according to the article. Thus, the research indica
'"/>

Contact: Gail Brown
gail.brown@ia.ucsb.edu
805-893-7220
University of California - Santa Barbara
22-May-2002


Page: 1 2

Related biology news :

1. Insecticide resistance: A constraint on evolutionary change
2. The scoop on poop: Insect feces, dead leaves may provide clues to health of world
3. Insect antibiotics Resistance is futile!
4. Insects survival, mating decrease with age in wild, researchers discover
5. Insect infestation models may shed light on insect and disease outbreaks
6. Insect bites on plants reduce photosynthesis, imaging device shows
7. Insects caught in a nutrient-poor food web
8. Insect defenses point the way to defeating bacterial antibiotic resistance
9. Bugscope Gives Internet Users Anywhere Chance To Study Insects
10. A Mothers Love? New UD Theory Explains Why Good Insect Moms Risk Death To Save Their Only Children
11. Human/Insect/Jellyfish Genes Team To Quiet "Hyper" Nerve Cells

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Insect yields clues evolution species

(Date:12/17/2014)... 2014 Valencell, a leader in performance biometric data ... industry leaders such as Intel, Jabra, Atlas, and Scosche ... products. These products will be showcased at CES 2015, ... . "Our partners choose PerformTek ...
(Date:12/11/2014)... DUBLIN , Dec. 09, 2014 Research and Markets ... ( http://www.researchandmarkets.com/research/twhjll/biometrics_market ) has announced the addition ... 2015-2019"  report to their offering. One ... technology. With continuous advances in technology, it is important ...
(Date:12/10/2014)... 8, 2014 You,ve been here before: you desperately need to ... site key or the answer to your secret question. What,s your ... Today, Hoyos Labs , a digital infrastructure security company, launches ... the frustration that comes with usernames, passwords and PINs – ...
Breaking Biology News(10 mins):Valencell PerformTek Biometrics Power the Most Accurate Wearables at CES 2015 2Biometrics Market in the APAC Region 2015-2019: Key Vendors are 3M Cogent, NEC, Safran and Suprema 2The Password is Finally Dead: Launch of 1U Mobile App Eliminates Need for All Usernames and Passwords 2The Password is Finally Dead: Launch of 1U Mobile App Eliminates Need for All Usernames and Passwords 3
(Date:1/22/2015)... Diagenode, Inc., a leading global provider ... complete solutions for epigenetics research, recently launched a ... need for manual processing. The new ChIPettor System ... histones or transcription factors and a semi-automated pipette ...
(Date:1/22/2015)... Mass. , Jan. 22, 2015   GenoSpace , a ... of tools to enable the broad use of genomic, imaging ... announced the appointment of Michelle Munson , CEO of ... director. Logo - http://photos.prnewswire.com/prnh/20150122/170713 ...
(Date:12/24/2014)... and NEW YORK , Dec. 24, 2014 ... advancing patient care in critical areas, announced the closing of ... and warrants to purchase up to an aggregate 3,500,000 shares ... share and $.01 per warrant.  The warrants have a per ...
(Date:12/24/2014)... (PRWEB) December 23, 2014 GMO corn cases ... Syngenta, are in the process of being consolidated in a ... In Re: Syngenta AG MIR 162 Corn Litigation, MDL No. ... Kansas. , Management of the Syngenta GMO corn multidistrict litigation ...
Breaking Biology Technology:Diagenode Launches Unique Semi-Automated Solution for Chromatin Immunoprecipitation 2GenoSpace Expands Board with Appointment of Michelle Munson 2PlasmaTech Biopharmaceuticals, Inc. Announces Closing of Public Offering 2PlasmaTech Biopharmaceuticals, Inc. Announces Closing of Public Offering 3Carey Danis & Lowe Reports on Syngenta GMO Corn Transfer Order 2
Cached News: