Navigation Links
Revealing the evolutionary history of threatened sea turtles
Date:10/15/2008

It's confirmed: Even though flatback turtles dine on fish, shrimp, and mollusks, they are closely related to primarily herbivorous green sea turtles. New genetic research carried out by Eugenia Naro-Maciel, a Marine Biodiversity Scientist at the Center for Biodiversity and Conservation at the American Museum of Natural History, and colleagues clarifies our understanding of the evolutionary relationships among all seven sea turtle species.

Naro-Maciel and colleagues used five nuclear DNA markers and two mitochondrial markers to test the evolutionary relationships of all species of marine turtlesleatherback, flatback, green, hawksbill, loggerhead, Kemp's Ridley, and Olive Ridleyand four 'outgroups,' or more distantly related animals. The results formed a well-supported phylogenetic tree, or cladogram, that tells the story of sea turtle evolution and is reported in the journal Molecular Phylogenetics and Evolution.

"The evolution of a specialized diet appears to have occurred three times, independently," says Naro-Maciel. "Many sea turtles are carnivorous generalists. However, hawksbills tend to have a diet of glassthey eat toxic spongeswhile the leatherback consumes jellyfish and the green grazes mainly on algae or sea grass." Each of the species with specialized diets is positioned uniquely in the evolutionary tree.

Naro-Maciel and colleagues confirmed that one major group of sea turtles includes sister species flatback and green turtles (one carnivorous and the other herbivorous), while another clade is formed by the hawksbill, loggerhead, Kemp's Ridley and Olive Ridley turtles. The leatherback is confirmed as the most basal of all the sea turtles, and the Eastern Pacific green turtlethought by some to be a separate speciesfalls within the green turtle species. The branches of this evolutionary tree can be calibrated with time using the new phylogeny and DNA data: Even though the ancestor of all sea turtles arose over
'/>"/>

Contact: Kristin Elise Phillips
kphillips@amnh.org
212-496-3419
American Museum of Natural History
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Illuminating biology: An evolutionary perspective
2. Milkweeds evolutionary approach to caterpillars: Counter appetite with fast repair
3. Revolutionary chefs? Not likely, shows physics research
4. Crossed (evolutionary) signals?
5. Mechanism and function of humor identified by new evolutionary theory
6. Revolutionary CO2 maps zoom in on greenhouse gas sources
7. M2SYS Introduces Revolutionary Biometric Artificial Intelligence Technology to Significantly Reduce Fingerprint Software False Reject Rates
8. Lemurs evolutionary history may shed light on our own
9. Dartmouth researchers find the root of the evolutionary emergence of vertebrates
10. Oldest Australian crayfish fossils provide missing evolutionary link
11. New book reveals an evolutionary journey of the human body
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Revealing the evolutionary history of threatened sea turtles
(Date:9/29/2014)... , Sept. 29, 2014 NXT-ID, Inc. ... the "Company"), a biometric authentication company focused on the ... S. Miceli has been named the Company,s Vice-President ... Gino Pereira as Chief Financial Officer. Mr. ... Executive Officer and as a Director. Mr. ...
(Date:9/29/2014)... safely tolerate treatment with cells cultured from human placental ... journal Multiple Sclerosis and Related Disorders . The ... conducted by researchers at Mount Sinai, Celgene Cellular Therapeutics ... institutions. , While designed to determine safety of ... that a preparation of cultured cells called PDA-001 may ...
(Date:9/28/2014)... by scientists at the University of California, Santa Cruz, ... within the genomes of primates drove the evolution of ... in every cell of our bodies. , The ... "retrotransposons" (a.k.a. "jumping genes") and the genes that have ... have, for the first time, identified genes in humans ...
Breaking Biology News(10 mins):NXT-ID, Inc. Names Vice-President and Chief Financial Officer 2NXT-ID, Inc. Names Vice-President and Chief Financial Officer 3Cells from placentas safe for patients with multiple sclerosis 2Human genome was shaped by an evolutionary arms race with itself 2Human genome was shaped by an evolutionary arms race with itself 3Human genome was shaped by an evolutionary arms race with itself 4
... is well known that animals use song as a way ... developed an unusual way of scaring off predators ?by singing ... Andrews discovered that wild gibbons in Thailand have developed a ... singing for survival, the gibbons appear to use the song ...
... replication within resident immune cells of the testis, providing ... even after effective highly active antiretroviral therapy. The related ... to human immunodeficiency virus-1 infection in situ and in ... of Pathology. , According to the most recent ...
... timing of food availability, researchers have identified the first ... Period 2, is a key component of the circadian ... of the University of Fribourg and Etienne Challet of ... 24th issue of the journal Current Biology, published by ...
Cached Biology News:Singing for survival 2Singing for survival 3Human testis harbors HIV-1 in resident immune cells 2Circadian gene helps the brain predict mealtime 2
(Date:9/30/2014)... MA and Pittsburgh PA (PRWEB) September 30, 2014 ... Clinical Research Nurses ( IACRN), a non-profit ... Alliance for Clinical Research Excellence and Safety ... the signing of a strategic alliance agreement, setting ... IACRN’s vision is to enhance clinical research quality ...
(Date:9/29/2014)... forefront of diagnostics today, with imaging techniques like ... and NMR (nuclear magnetic resonance) increasing steeply over ... image resolution and quality still limit these techniques ... solution is hyperpolarization, which involves injecting the patient ... following the distribution and fate of specific molecules ...
(Date:9/29/2014)... , Sept. 29, 2014  Ten of the ... of cartilage repair, regeneration, allograft reconstruction and research ... the world gathered to discuss the future of ... of Regenerative Medicine symposium, Cartilage Regeneration: State ... included Orthopedic Biosurgery, Minced Juvenile Allograft, and State ...
(Date:9/29/2014)... , Sept. 29, 2014 /PRNewswire/ - Portage Biotech Inc. ... PBT.U), is pleased to announce that its three Promissory ... Portage, who advanced $ 100,000 each in July 2014 ... their Notes and related Coupons converted into 3,500,001 restricted ... carried 5% coupon. Both the Note and the coupon ...
Breaking Biology Technology:IACRN and ACRES to Support Clinical Research Nurses 2IACRN and ACRES to Support Clinical Research Nurses 3A safer approach for diagnostic medical imaging 2A safer approach for diagnostic medical imaging 3World Renowned Experts Discuss Future Of Cartilage Regeneration 2World Renowned Experts Discuss Future Of Cartilage Regeneration 3Portage announces conversion of its debt into equity 2Portage announces conversion of its debt into equity 3
... and Clinical Studies Demonstrate Activity of ... Agent against Gram-Positive Bacteria, CHICAGO, Sept. 18 ... THRX ) announced today results with the,investigational ... skin and skin structure infections,(cSSSIs) from a controlled ...
... Preclinical Animal Data Demonstrates Selective Survival Advantage of ... ZFN-Treated Immune Cells after HIV Infection, ... (Nasdaq: SGMO ) announced today the presentation of ... resistant to,HIV infection by treatment with zinc finger DNA-binding ...
... Research - the New ISI Web of Knowledge - ... Institutions Throughout the Country, PHILADELPHIA and LONDON, Sept. ... TOC ; TSX: TOC) and,leading provider of information ... that Spain,s La Fundacion Espanola,para la Ciencia y la ...
Cached Biology Technology:Astellas and Theravance Report Additional Telavancin Data at 47th Annual ICAAC 2Astellas and Theravance Report Additional Telavancin Data at 47th Annual ICAAC 3Astellas and Theravance Report Additional Telavancin Data at 47th Annual ICAAC 4Astellas and Theravance Report Additional Telavancin Data at 47th Annual ICAAC 5Astellas and Theravance Report Additional Telavancin Data at 47th Annual ICAAC 6Sangamo BioSciences Presents Data Demonstrating 'In Vivo' Protection Against HIV Infection by CCR5-ZFN Therapeutic 2Sangamo BioSciences Presents Data Demonstrating 'In Vivo' Protection Against HIV Infection by CCR5-ZFN Therapeutic 3Sangamo BioSciences Presents Data Demonstrating 'In Vivo' Protection Against HIV Infection by CCR5-ZFN Therapeutic 4Sangamo BioSciences Presents Data Demonstrating 'In Vivo' Protection Against HIV Infection by CCR5-ZFN Therapeutic 5Spanish Research Consortium Signs Four-Year Renewal Deal for ISI Web of Knowledge 2Spanish Research Consortium Signs Four-Year Renewal Deal for ISI Web of Knowledge 3
... operational costs. More efficient interfacing with ... sample volumes. Industry demands for benefits ... microbore chromatography for routine applications. Standard ... satisfy the need to operate with ...
From the company that first brought you the chromatin immunoprecipitation (ChIP) kit, a new and improved kit, EZ-ChIP, is now available to make your experiments easier, quicker, and most importantly,...
... Hepta adaptor for the PDS-1000 He biolistic system ... than the standard system. It fits into the ... it splits the helium shock wave over 7 ... tungsten particles over this larger area, the system ...
Kit Components: Anti-Acetylated Histone H3 Salmon Sperm DNA/Protein A Agarose All necessary buffers. ...
Biology Products: