Navigation Links
Prehistoric aesthetics explains snail biogeography puzzle
Date:9/18/2007

ails were not endemic to the islands," said Foighil, who is an associate professor of ecology and evolutionary biology and a curator at the U-M Museum of Zoology.

If the white snails were similarly transported by accident, their distribution pattern should be random, with nearby islands being much more likely than more distant ones to have received them. "The fact that they're not present on nearby islands suggests deliberate introduction to the more distant archipelagos," Foighil said.

To investigate that possibility, the researchers conducted genetic analyses of snails from Tahiti and the Austral and Southern Cook Islands. The task was complicated by the dearth of wild snails on Tahiti, the result of a disastrous biological control experiment in which the predatory rosy wolf snail was brought to the island in 1975 to squelch an agricultural pest but feasted instead on native tree snails. Fortuitously, U-M professor emeritus John B. (Jack) Burch had collected Partula specimens in Tahiti in 1970, and those freeze-dried specimens still reside in the Museum of Zoology, where Foighil and assistant research scientist Taehwan Lee recently have been extracting, amplifying and analyzing their DNA and using the information to construct evolutionary trees. The researchers also had access to captive populations maintained in London Zoo.

The genetic analyses confirmed the Tahitian origins of the Austral and Southern Cook snails and suggested multiple prehistoric introductions from Tahiti. To understand what motivated early islanders to deliberately transport live snails, the researchers turned their attention from genetics to aesthetics.

"We know that Polynesians used these shells ornamentally. We think the fact that the white shells were aesthetically valuable within this regional trading network explains their unusual distribution," Foighil said. On Tahiti, where the shells were relatively common, they would not have been highly priz
'/>"/>

Contact: Nancy Ross-Flanigan
rossflan@umich.edu
734-647-1853
University of Michigan
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Climate model links higher temperatures to prehistoric extinction
2. Envisat radar surveillance protects endangered prehistoric fish
3. Prehistoric mystery organism verified as giant fungus
4. Prehistoric origins of stomach ulcers uncovered
5. Gene sequencing explains bioremediation bug
6. New book explains antibiotic resistance for a broad audience
7. Viral fitness explains different resistance patterns to aids drugs
8. UGA study explains peaks and troughs of dengue epidemics
9. New mechanism explains glucose effect on wakefulness
10. Scientists find hormone activity explains adolescent mood swings
11. The kapok connection -- Study explains rainforest similarities
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/1/2015)...   Medisafe ™, the leading global medication management ... and Android smartphones and tablets, announces ... platform to allow patients to track and correlate their ... patients will be able to visualize in real-time how ... such as glucose levels and blood pressure. ...
(Date:3/30/2015)... DUBLIN , Mar. 26, 2015 Research and ... addition of the "Global Gesture Recognition Market in ... The analysts forecast the Global Gesture Recognition market ... 12.8% over the period 2013-2018. Gesture recognition ... respond to different gestures of an individual. Gesture recognition ...
(Date:3/24/2015)... --Research and Markets ( http://www.researchandmarkets.com/research/kvdtcw/face_and_voice ) has announced the ... Business Report" report to their offering. This report ... Thousands by the following Segments: Face Biometrics, and Voice Biometrics. The ... , Japan , Europe ... & Africa , and Latin ...
Breaking Biology News(10 mins):Medisafe Announces Launch of Biometric Integration, Enabling Patients to Stay Adherent to Their Meds and See Tangible Health Results 2Global Gesture Recognition Market in Automotive Sector Report 2015 - Growing Number of Partnerships 2Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 2Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 3Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 4Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 5Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 6
... school early with dreams of being a rock star ... microbiology and his studies into the social lifestyle of ... leading cause of death in Cystic Fibrosis patients and ... Steve Diggle, Royal Society University Research Fellow (and part-time ...
... team of scientists in the United Kingdom and ... microbes have become progressively more resistant to antibiotics ... continues despite apparent more stringent rules on use ... sewage treatment technology that broadly improves water quality ...
... The Johns Hopkins University School of Medicine reveal new details ... in the March issue of The Journal of General ... ion channels spontaneously close by inactivation, a process distinct from ... important for a variety of biological processes, including the timing ...
Cached Biology News:A rocking good lecture 2
(Date:5/1/2015)... , May 1, 2015 /CNW/ - Softchoice, a leading North ... it is the proud recipient of two Cisco® Partner Summit ... Partner of the Year and Security Partner of the Year ... conference taking place this week in Montreal ... one, but two Cisco partner awards at this year,s conference," ...
(Date:5/1/2015)... and RESEARCH TRIANGLE PARK, N.C. , May ... announced today that Roger Jeffs , Ph.D., President and ... and update on the company,s business at the Deutsche Bank ... Boston, Massachusetts . The presentation will take ... Time, and can be accessed via a live webcast on ...
(Date:4/30/2015)... April 30, 2015 /PRNewswire/ - BioAmber Inc. (NYSE: ... announced that it has commenced an underwritten public offering ... grant the underwriters a 30-day option to purchase up ... common stock offered in the public offering. The offering ... no assurance as to whether or when the offering ...
(Date:4/30/2015)... , April 30, 2015  The Paul G. Allen ... Investigator (ADI) grants to six groups of researchers with ... challenging roadblocks in neuroscience: growing mature human brain cells ... total of $7.5 million over three years.  ... their research is especially significant because the field of ...
Breaking Biology Technology:Softchoice recognized with two Country Awards at Cisco Partner Summit 2015 2BioAmber Inc. Announces Public Offering Of Common Stock 2BioAmber Inc. Announces Public Offering Of Common Stock 3The Paul G. Allen Family Foundation Awards $7.5 Million To Study Brain Cell Growth And Development 2The Paul G. Allen Family Foundation Awards $7.5 Million To Study Brain Cell Growth And Development 3The Paul G. Allen Family Foundation Awards $7.5 Million To Study Brain Cell Growth And Development 4The Paul G. Allen Family Foundation Awards $7.5 Million To Study Brain Cell Growth And Development 5
... To date, 60 specialty & fine,chemical and ... scheduled,to exhibit at the Pharma ChemOutsourcing Conference & ... conference and exhibition has already attracted more exhibitors ... community is attracted to,the high-quality show that draws ...
... -, - Three Poster Presentations on the Hydrogel ... Inc. (Amex: ULU ),today announced that at the upcoming ... 28th to June 1, 2008, Dr. John St. John, ULURU,s,Vice ... with the presentation of three posters., The title of ...
... Products in Clinic -, - Lead Candidate Targets Hormone Refractory Prostate and Non-Small Cell ... Lung Cancers ... ... Time -, BOTHELL, WA and VANCOUVER, May 28 /PRNewswire-FirstCall/ - Sonus,Pharmaceuticals, Inc. ...
Cached Biology Technology:60 Specialty Chemical, Fine Chemical & Custom Synthesis Providers Will Exhibit at Pharma ChemOutsourcing on September 8-9 in New Jersey 2ULURU Inc. to Present at the 8th World Biomaterials Congress 2ULURU Inc. to Present at the 8th World Biomaterials Congress 3Sonus Pharmaceuticals and OncoGenex Technologies to Merge 2Sonus Pharmaceuticals and OncoGenex Technologies to Merge 3Sonus Pharmaceuticals and OncoGenex Technologies to Merge 4Sonus Pharmaceuticals and OncoGenex Technologies to Merge 5Sonus Pharmaceuticals and OncoGenex Technologies to Merge 6Sonus Pharmaceuticals and OncoGenex Technologies to Merge 7Sonus Pharmaceuticals and OncoGenex Technologies to Merge 8
... 2 Alzheimer's disease (AD) patients with ... mutations in the presenilin proteins (PSEN1; PSEN2) ... disease-linked mutations result in increased production of ... of amyloid deposits found in AD brains). ...
See product name for description....
2'-Fluorine-CTP (2'-F-CTP) is readily incorporated into transcripts by T7 and SP6 R&DNA™ Polymerase and is available separately....
Rat CINC-2 alpha/beta Affinity Purified Polyclonal Ab...
Biology Products: