Navigation Links
Scientists use DNA from a museum specimen to study rarely observed type of killer whale
Date:6/19/2013

In a scientific paper published in the journal Polar Biology, researchers report using DNA from tissues samples collected in 1955 to study what may be a new type of killer whale (Orcinus orca).

In 1955, a pod of unusual-looking killer whales stranded on a New Zealand beach and a skeleton was saved in a museum in Wellington. Photographs were also taken but it was almost 50 years before this unique form of killer whale, characterized by a very small white eye-patch and bulbous forehead, was documented alive in the wild.

Scientists have suspected for some time that there might be more than one type of killer whale, a theory supported by recent genetic studies. The so-called "type D" killer whale from New Zealand, however, was not included in previous genetic studies because no tissue samples were available. For the current study, scientist Andrew Foote (University of Copenhagen) extracted DNA from dried tissue and tooth fragments from the New Zealand skeleton, the only known specimen of type D killer whale.

A complete mitochondrial DNA sequence of the type D specimen was compared to samples of 139 killer whales from around the world. From that, Foote estimated that type D separated from other killer whales approximately 390,000 years ago, making it the second oldest branch in the killer whale family tree and possibly a separate subspecies or species. Dramatic changes in global sea level and ice sheet coverage during the Pleistocene may have contributed to the diversification of killer whales.


'/>"/>

Contact: Phillip A. Morin
phillip.morin@noaa.gov
NOAA National Marine Fisheries Service
Source:Eurekalert

Page: 1

Related biology news :

1. Stanford scientists develop gene therapy approach to grow blood vessels in ischemic limbs
2. Queens scientists seek vaccine for Pseudomonas infection
3. Scientists produce eye structures from human blood-derived stem cells
4. American Society of Plant Biologists honors early career women scientists
5. Brandeis scientists win prestigious prize for circadian rhythms research
6. Scientists discover new method of proton transfer
7. Salk scientists open new window into how cancers override cellular growth controls
8. WileyChina.com - Now Featuring Bespoke Pages for China’s Life Scientists
9. Scientists win $2 million to study new pathway in development and maintenance of lymphoma
10. UGA scientists reveal genetic mutation depicted in van Goghs sunflower paintings
11. Genetic mutation depicted in van Goghs sunflower paintings revealed by scientists
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/3/2017)... 3, 2017 Onitor, provider of digital health ... Track, an innovative biometric data-driven program designed to aid ... at the 2017 Consumer Electronics Show (CES) in ... the U.S., the World Health Organization (WHO), have identified ... adults who are overweight or obese. WHO also states ...
(Date:12/22/2016)... 22, 2016 SuperCom (NASDAQ:   ... for the e-Government, Public Safety, HealthCare, and Finance sectors announced today ... been selected to implement and deploy a community-based supportive services program ... California , further expanding its presence in the state. ... This new program, which ...
(Date:12/20/2016)... Dec, 20, 2016   Valencell , the ... and STMicroelectronics (NYSE: STM), a global semiconductor ... applications, announced today the launch of a new, ... wearables that includes ST,s compact SensorTile ... biometric sensor system. Together, SensorTile and Benchmark ...
Breaking Biology News(10 mins):
(Date:1/18/2017)... ... January 18, 2017 , ... ... today announced that it has submitted a 510(k) to the FDA, requesting clearance ... MYOLYN’s patent-pending functional electrical stimulation (FES) technology. , The submission marks a ...
(Date:1/18/2017)... , ... January 18, 2017 , ... ... 24th, 2017, to sell research and genetic testing lab equipment from two different ... the Northwest and Northeast regions of the United States. This 1-day online auction ...
(Date:1/18/2017)... DIEGO , Jan. 18, 2017 Shareholder ... an investigation into whether the board members of CoLucid ... fiduciary duties in connection with the proposed sale of ... a biopharmaceutical company that develops small molecules for the ... 2017, CoLucid announced it had signed a definitive merger ...
(Date:1/18/2017)... TORONTO , Jan. 18, 2017 /PRNewswire/ - ... life sciences and diagnostics company that develops and ... diagnostics ("SQI" or the "Company"), today announced that ... Markets Inc. ("Kingsdale"), has resigned from its Board ... recent changes to securities regulations that have limited ...
Breaking Biology Technology: