Navigation Links
Inconspicuous leaf beetles reveal environment's role in formation of new species
Date:10/30/2009

Unnoticed by the nearby residents of St. Johnsbury, Vermont, tiny leaf beetles that flit among the maple and willow trees in the area have just provided some of the clearest evidence yet that environmental factors play a major role in the formation of new species.

At Vanderbilt University, graduate student Scott Egan and his adviser Daniel Funk, associate professor of biological sciences, obtained this new evidence from an experimental study published online this week in the early edition of the Proceedings of the National Academy of Sciences.

Funk has investigated this odd group of leaf beetles (which resemble unappetizing caterpillar pellets) for 15 years. In recent years he and Egan have used Vermont populations that associate with red maples and Bebbs willows to investigate how divergent ecological habits promote speciation. Their past observations have suggested that such "maple leaf beetles" and "willow leaf beetles" may be in the process of dividing into two new species: Each prefers to feed and lay eggs on their own "host plant," where they grow and survive best. Although there is some intermixing, the beetles show a decided preference for mates from the same host. While maple and willow beetles are visually indistinguishable, the current degree of their divergence is highlighted by the willow beetles' willingness to starve to death rather than feed on the maple leaves readily consumed by their maple beetle cousins.

This research has established these inconspicuous beetles as an important example of how ecological factors contribute to evolutionary divergence and the origin of Earth's millions of species. "Without this process, life would not have the incredible number and variety of species that we take for granted," says Funk.

Although such ideas were raised just after Darwin wrote his famous book, On the Origin of Species, most 20th century research focused on the role of genetic factors and geog
'/>"/>

Contact: David F. Salisbury
david.salisbury@vanderbilt.edu
615-343-6803
Vanderbilt University
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Sex is thirst-quenching for female beetles
2. Armed beetles find a mate, whatever their size
3. Entomologists play matchmakers for cerambycid beetles
4. Novel fungus helps beetles to digest hard wood
5. Beetles get by with a little help from their friends
6. Controlling cucumber beetles organically
7. Childhood obesity indicates greater risk of school absenteeism, Penn study reveals
8. Study begins to reveal clues to the cause and progression of sepsis
9. Comet probes reveal evidence of origin of life, scientists claim
10. Structure of 450 million year old protein reveals evolutions steps
11. UF scientists reveal how dietary restriction cleans cells
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Inconspicuous leaf beetles reveal environment's role in formation of new species
(Date:8/29/2014)... In a cell,s nucleus, chromosomal DNA is tightly ... amalgam biologists call chromatin. Until about two decades ... the mere packing material around which the glamorous ... developed a greater appreciation for how DNA/histone interactions ... multiple research institutions studying the sequence of the ...
(Date:8/29/2014)... The rise of the Tibetan plateau -- the largest ... important for both its profound effect on climate and ... in GSA Bulletin , Katharine Huntington and colleagues ... -- using modern and fossil snail shells to investigate ... Tibet. , Views range widely on the timing ...
(Date:8/28/2014)... Society of America (ESA) is pleased to announce the ... of the Society. Honorary Membership acknowledges those who have ... involvement in the affairs of the Society that has ... selected by the ESA Governing Board and then voted ... honored at the Awards Ceremony at Entomology 2014, ESA,s ...
Breaking Biology News(10 mins):'K-to-M' histone mutations: How repressing the repressors may drive tissue-specific cancers 2'K-to-M' histone mutations: How repressing the repressors may drive tissue-specific cancers 3Snails tell of the rise and fall of the Tibetan Plateau 2Snails tell of the rise and fall of the Tibetan Plateau 3Snails tell of the rise and fall of the Tibetan Plateau 4Snails tell of the rise and fall of the Tibetan Plateau 5Snails tell of the rise and fall of the Tibetan Plateau 6Snails tell of the rise and fall of the Tibetan Plateau 7Fred Baxendale selected as Honorary Member of the Entomological Society of America 2
... In experiments with mice, researchers have found that eliminating ... the development of pain-sensing neurons knocks out the animals' ... that outlasts the injury and is associated with nerve ... in the gene, called Runx1, also showed lack of ...
... from Scripps Research; the Genomics Research Center, Academia Sinica, ... published today in the journal Chemistry and Biology (Vol. ... Ernest W. Hahn Chair in Chemistry at the Skaggs ... lab heading the study. He said the new finding ...
... Pacific Islands nation has distinguished itself on the global ... creating the third largest marine protected area in the ... most pristine coral reefs. , Martin Puta Tofinga, Minister ... of Kiribati, announced the establishment of the Phoenix Islands ...
Cached Biology News:Master genetic switch found for chronic pain 2Enzyme inhibitors block replication of SARS virus 2Pacific Islands paradise protected 2Pacific Islands paradise protected 3
(Date:8/30/2014)... The Global and China Electrical ... study on the current state of the Electrical ... The report provides a basic overview of the ... Global market analysis and Chinese domestic market analysis ... trends and competitive landscape of the market. A ...
(Date:8/29/2014)... York (PRWEB) August 29, 2014 ... at $5.6 billion in 2019. It is expected ... 2013 to 2019, and was valued at $1.8 ... published by Transparency Market Research. , For more ... http://www.transparencymarketresearch.com/companion-diagnostics-market.html . , The research report, titled ...
(Date:8/29/2014)... VANCOUVER , Aug. 29, 2014 /PRNewswire/ - ... (OTCQX: ICOTF), today reported financial results for the ... specified otherwise, are expressed in Canadian dollars and ... Second Quarter 2014 Highlights , ... visual acuity (VA) primary endpoint for subjects enrolled ...
(Date:8/29/2014)... Boston, MA (PRWEB) August 29, 2014 Due ... (FRC) last week, the Adult Stem Cell Technology Center, ... donations to support stem cell therapy research that might benefit ... adult stem cells for new stem cell technologies and therapeutic ... ALS Ice Bucket Challenge donors who wish not ...
Breaking Biology Technology:Electrical Insulating Varnish Market World, China Regional Analysis & 2020 Forecasts Available at DeepResearchReports.com 2Electrical Insulating Varnish Market World, China Regional Analysis & 2020 Forecasts Available at DeepResearchReports.com 3Companion Diagnostics Market to Hit $5.6 Billion in 2019: Transparency Market Research 2Companion Diagnostics Market to Hit $5.6 Billion in 2019: Transparency Market Research 3iCo Therapeutics Announces Second Quarter 2014 Financial Results 2iCo Therapeutics Announces Second Quarter 2014 Financial Results 3iCo Therapeutics Announces Second Quarter 2014 Financial Results 4The Adult Stem Cell Technology Center, LLC Declines ALS Ice Bucket Challenge Donors Wishing to Support Ethical Research for New Stem Cell Therapies 2The Adult Stem Cell Technology Center, LLC Declines ALS Ice Bucket Challenge Donors Wishing to Support Ethical Research for New Stem Cell Therapies 3
... leading nonprofit organizations - the American Botanical Council ... University of Mississippi,s National Center for Natural Products ... to educate members of the herbal and dietary ... (Logo: http://photos.prnewswire.com/prnh/20100430/DC95601LOGO ) ...
... SAN FRANCISCO, Nov. 2, 2011 Jennerex, Inc., a ... commercialization of first-in-class targeted oncolytic products for cancer, today ... clinical trial in advanced liver cancer patients will be ... Annual Meeting of the American Association for the Study ...
... 2, 2011 - Vaginal Self-collection for ... Increases Screening Coverage and is More Sensitive than Pap Smear ... Promising findings published today online in the ... trial undertaken by public health authorities in Mexico to investigate ...
Cached Biology Technology:Nonprofit Collaboration Addresses Adulteration of Botanical Dietary Ingredients 2Nonprofit Collaboration Addresses Adulteration of Botanical Dietary Ingredients 3Nonprofit Collaboration Addresses Adulteration of Botanical Dietary Ingredients 4Nonprofit Collaboration Addresses Adulteration of Botanical Dietary Ingredients 5Nonprofit Collaboration Addresses Adulteration of Botanical Dietary Ingredients 6Jennerex to Present Final Survival Data From Randomized Phase 2 Clinical Trial of JX-594 in Advanced Liver Cancer at American Association for the Study of Liver Diseases Annual Meeting 2Jennerex to Present Final Survival Data From Randomized Phase 2 Clinical Trial of JX-594 in Advanced Liver Cancer at American Association for the Study of Liver Diseases Annual Meeting 3Jennerex to Present Final Survival Data From Randomized Phase 2 Clinical Trial of JX-594 in Advanced Liver Cancer at American Association for the Study of Liver Diseases Annual Meeting 4Home-based Self-collected Vaginal Specimens Detect More Cervical Lesions and Cancers Than Cytology 2Home-based Self-collected Vaginal Specimens Detect More Cervical Lesions and Cancers Than Cytology 3Home-based Self-collected Vaginal Specimens Detect More Cervical Lesions and Cancers Than Cytology 4Home-based Self-collected Vaginal Specimens Detect More Cervical Lesions and Cancers Than Cytology 5
... single use spatulas have been designed to ... are for those interested in eliminating the ... Each spatula is individually packaged, RNase/DNase free, ... is a new product number, created to ...
... of cells • Blade design minimizes cell ... growth surface • Designed for use in ... • Sterilized by gamma radiation and certified ... new product number, created to easily match ...
... Corning single use spatulas have been ... samples. They are for those interested in ... reusable spatulas. Each spatula is individually packaged, ... CLS number is a new product number, ...
... The MagneGST™ Protein Purification System provides ... for the purification of glutathione-S-transferase (GST) ... (MagneGST™ Particles) are used to isolate ... or cleared lysate using either a ...
Biology Products: