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:6/30/2015)... 30, 2015 To bolster its efforts and commitment ... announced today the addition of two new team members. ... advisor and David Raviv will act as head ... Corp.,s commitment to providing the most secure solutions for the ... co-founded Layer 7 Technologies, a provider of security and management ...
(Date:6/25/2015)... , June 25, 2015 ... Sensors Market by Type (Swipe & Area), Technology, Material ... Government, Healthcare, Commercial Security & Others) & Geography ... by marketsandmarkets, the said market is expected to ... of 17.1%. Browse 76 market ...
(Date:6/24/2015)... , June 24, 2015 This report provides ... the next six years. It contains an analysis of ... along with their impact from the short, medium, and ... discusses the industry, market, and technology trends that currently, ... need of concerned authorities to efficiently manage the increasing ...
Breaking Biology News(10 mins):HYPR Corp. Expands Biometric Authentication Team with Enterprise All Stars 2HYPR Corp. Expands Biometric Authentication Team with Enterprise All Stars 3Fingerprint Sensors Market Worth $14,500.07 Million by 2020 2Fingerprint Sensors Market Worth $14,500.07 Million by 2020 3Fingerprint Sensors Market Worth $14,500.07 Million by 2020 4Automatic Identification System Market by Class, by Platform, by Application and by Geography - Global Forecasts & Analysis to 2014 - 2020 2
(Date:7/3/2015)... Forskere kan søke ... Science", som finner sted i ... på  http://www.openinnovationinscience.at , og søknadsperioden varer frem ... to største utfordringene innen helsevitenskapen er mangelen ... og kompleksiteten av nåværende forskningsresultater, i følge ...
(Date:7/2/2015)... 2015  Spherix Incorporated (Nasdaq: SPEX ) -- an intellectual ... of intellectual property, today announced a litigation update. ... Verizon Services Corp. et al. , Case No. 1:14-cv-00721-GBL-TCB, ... District of Virginia , the Court ... certain key claims in favor of the Defendants on ...
(Date:7/1/2015)... PARK, N.C. and PARIS ... research firm AgBiome, and Genective, key developer of ... accelerate the discovery of new generations of insect ... for insect control to counter the realities of ... with Genective, aligning AgBiome,s unique insect control technology ...
(Date:7/1/2015)...  Axovant Sciences Ltd. (NYSE:  AXON), a leading ... dementia, today announced that the company will host ... p.m. EDT following its presentation of RVT-101 clinical ... (AAIC). The event will include ... Lawrence Friedhoff , Chief Development Officer, will present ...
Breaking Biology Technology:Lansering av verdens første Open Innovation-program for utdanning av forskere 2Lansering av verdens første Open Innovation-program for utdanning av forskere 3Spherix Issues A Litigation Update 2Spherix Issues A Litigation Update 3AgBiome and Genective collaborate to create novel insect-resistant crops 2Axovant Sciences To Host Investor Briefing And Live Webcast During AAIC 2015 Meeting 2Axovant Sciences To Host Investor Briefing And Live Webcast During AAIC 2015 Meeting 3
Cached News: