Navigation Links
In bubble-rafting snails, the eggs came first
Date:10/11/2011

ANN ARBOR, Mich.---It's "Waterworld" snail style: Ocean-dwelling snails that spend most of their lives floating upside down, attached to rafts of mucus bubbles.

Scientists have known about the snails' peculiar lifestyle since the 1600s, but they've wondered how the rafting habit evolved. What, exactly, were the step-by-step adaptations along the way?

University of Michigan graduate student Celia Churchill and coauthors believe they've found the answer to that intriguing question. In a paper published in the Oct. 11 issue of Current Biology, they show that bubble rafting evolved by way of modified egg masses.

The bubble-rafting snails, members of the family Janthinidae, secrete mucus from their "foot," a broad, muscular organ at the base of the snail's body. But instead of using slime to get around or to communicate chemically, as other types of snails do, they trap air inside quick-setting mucus to make bubbles that glom together and form rafts on which the snails spend the rest of their lives.

"We had a pretty good idea that that janthinids evolved from snails that live on the sea floor," Churchill said. The question was, which specific group of snails gave rise to the janthinids, and how did the janthinid lineage make the transition from bottom dwellers to surface surfers?

To find the answer, Churchill and coauthors first sequenced DNA from janthinids and other snail families thought to be closely related to them and used techniques of molecular phylogenetics to identify the ancestral lineage. They discovered that the rafting snails are descendents of sea-floor snails called wentletraps that parasitize corals and sea anemones. The researchers then asked which specific habits of wentletraps might have morphed over time into raft-building.

"We thought of two possibilities," said Churchill, who did the work under the direction of Diarmaid Foighil, a professor of ecology and evolutionary biol
'/>"/>

Contact: Jim Erickson
ericksn@umich.edu
734-647-1842
University of Michigan
Source:Eurekalert  

Page: 1 2 3 4

Related biology news :

1. First NIH-funded personalized drug development center in US will focus on muscle disease
2. Pumice proposed as home to the first life forms: A new hypothesis in Astrobiology journal
3. Reefs recovered faster after mass extinction than first thought
4. Hutchinson Center scientist wins first NIH Directors Early Indpendence Award
5. World-first discovery can help save coral reefs
6. NHTSA Awards Takata-TruTouch $2.25M to Advance Worlds First Touch-based In-Vehicle Alcohol Detection Device
7. LLNL selects Madhav Marathe for the first George A. Michael Distinguished Scholar Award
8. Aboriginal Australians: The first explorers
9. Purdue technology used in first fluorescence-guided ovarian cancer surgery
10. First field-based molecular diagnostic test for African sleeping sickness in sight
11. Biochemical cell signals quantified for first time
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
In bubble-rafting snails, the eggs came first
(Date:8/26/2015)... -- The report "Multi-Factor Authentication (MFA) Market by ... & Immigration, Government, Banking, Defense, Commercial Security, Consumer Electronics, ... by MarketsandMarkets, Multi-Factor Authentication Market is expected to reach ... of 17.7% between 2015 and 2020. ... through 169 P ages and in-depth ...
(Date:8/25/2015)... and BELLEVUE, Wash. , Aug. ... advanced robotic systems, announced today it will unveil its ... vehicle (UGV), at the National Tactical Officers Association Conference ... The Guardian S is the first-ever commercially available ... years of research and in-field trials and is protected ...
(Date:8/24/2015)... , August 24, 2015 The ... ,s largest biometrics manufacturer DERMALOG and its customized solutions ... "2015 African Biometrics Company of the Year Award". DERMALOG is ... Nigeria .   -Cross reference: Picture is ... - On Thursday evening, in ...
Breaking Biology News(10 mins):Multi-Factor Authentication Market Worth 9.60 Billion USD by 2020 2Multi-Factor Authentication Market Worth 9.60 Billion USD by 2020 3Multi-Factor Authentication Market Worth 9.60 Billion USD by 2020 4Multi-Factor Authentication Market Worth 9.60 Billion USD by 2020 5Sarcos to Debut First-of-its-Kind Snake Robot 2Sarcos to Debut First-of-its-Kind Snake Robot 3Frost & Sullivan Honors DERMALOG with Biometrics Prize for Achievements in Africa 2Frost & Sullivan Honors DERMALOG with Biometrics Prize for Achievements in Africa 3
... generation of cancer chemotherapeutic drugs specifically targets mutant enzymes ... uncontrolled cell growth. As promising as these drugs are, ... the tendency to fight back. A major goal of ... desperation. , In a forthcoming issue of Cancer Cell, ...
... Scientists have identified the first biochemical marker linked to sleep ... in activity when sleep deprivation is prolonged. , Researchers hope ... that will aid diagnosis and treatment of sleep disorders and ... at the wheel of a car or in other dangerous ...
... of these epidermal neural crest stem cells in the ... showing that these cells are distinctly different from other ... valuable resource for future mouse neural crest stem cell ... Maya Sieber-Blum's laboratory, co-authored by Yao Fei Hu, Ph.D., ...
Cached Biology News:Distinguishing friend from foe in the battle against cancer 2Distinguishing friend from foe in the battle against cancer 3First biomarker for human sleepiness identified in fruit flies 2First biomarker for human sleepiness identified in fruit flies 3Stem cells found in adult hair follicles may provide alternative to embryonic stem cells 2
(Date:8/28/2015)... ... August 28, 2015 , ... ... surgeon, Wade McKenna, DO, announced today that the use of sterile, dehydrated amniotic ... complete healing of an otherwise non-healing surgical knee wound. , The case involved ...
(Date:8/28/2015)... NY (PRWEB) , ... August 28, 2015 , ... Since the initial launch of FireflySci ... their quirky humor and excellent customer service. Images such as the Fonz in a ... to add some flavor to the humdrum spectroscopy field. , FireflySci is proud ...
(Date:8/27/2015)... (PRWEB) , ... August 27, 2015 , ... ... opportunity for venture capital funds, investment firms and animal health companies to hear ... have raised $160 million. Several have also received licensing agreements or distribution contracts. ...
(Date:8/27/2015)... ... August 27, 2015 , ... Capital Edge Consulting , a nationwide ... pleased to announce their ranking as one of the top 5000 companies listed on ... companies across the nation. , “It is truly an honor to be recognized as ...
Breaking Biology Technology:Dallas-Fort Worth Stem Cell Researchers Use Amniotic Tissue To Successfully Treat Non-Healing Surgical Wound 2Dallas-Fort Worth Stem Cell Researchers Use Amniotic Tissue To Successfully Treat Non-Healing Surgical Wound 3Dallas-Fort Worth Stem Cell Researchers Use Amniotic Tissue To Successfully Treat Non-Healing Surgical Wound 4Cuvette Manufacturer FireflySci Launches Back to School Deals with Complimentary Shipping On All Orders 2VetStem Biopharma, Inc. Among Seventeen Companies Selected to Present at the KC Animal Health Investment Forum on September 1st 2015 2VetStem Biopharma, Inc. Among Seventeen Companies Selected to Present at the KC Animal Health Investment Forum on September 1st 2015 3Capital Edge Consulting Makes Inc. 5000 List of America’s Fastest-Growing Private Companies 2Capital Edge Consulting Makes Inc. 5000 List of America’s Fastest-Growing Private Companies 3
... Growing Generations, the nation,s,largest surrogacy agency, has launched ... to men with HIV and allows them to use,their ... program is made possible due to advances in technology ... the implementation of recent California,legislation enacted in January that ...
... 3 DermTech, a biotechnology,company developing molecular diagnostics ... today announced that Herbert A. Fritsche,Ph.D., has joined ... Chief of Clinical Chemistry at M.D. Anderson Cancer ... development and validation of cancer,diagnostics for early disease ...
... CORAL GABLES, Fla., June 3 Catalyst,Pharmaceutical ... biopharmaceutical company,that acquires, in-licenses, develops and commercializes ... and obsessive compulsive disorders,today announced the filing ... and Exchange Commission (SEC). After the shelf ...
Cached Biology Technology:Growing Generations Announces Surrogacy Program for Men with HIV 2DermTech Names Herbert A. Fritsche, Ph.D., Chief of Clinical Chemistry at M.D. Anderson Cancer Center to Company's Scientific Advisory Board 2Catalyst Pharmaceutical Partners, Inc. Files Form S-3 Shelf Registration Statement 2Catalyst Pharmaceutical Partners, Inc. Files Form S-3 Shelf Registration Statement 3
Agarose, pulse field, 250 g. Nuclease-free.Gel point (1.5%): 36 1.5 C, EEO (-mr): 1800 g/cm2. Category: Nucleotides & Enzymes & Biochemicals, Ultrapure Biochemicals ....
Homo sapiens palladin...
Recombinant Rat Leptin, Ultra Pure...
Bethyl Laboratories packages antibodies, conjugates and calibrators to provide quantitative ELISA kits. Each kit contains the following components, sufficient for 1000 single well assays....
Biology Products: