Navigation Links
Living fossils have long- and short-term memory
Date:5/30/2008

Nautiloids are the sole surviving family of externally-shelled cephalopods that thrived in the tropical oceans 450150 million years ago. However, in the intervening years their modern soft bodied relatives dumped the shell and developed complex central nervous systems; which makes Nautilus ideally suited to discover the evolutionary pathways that led to the development of the complex coleoid [soft bodied cephalopod] brains say Robyn Crook and Jennifer Basil. Knowing that the simple Nautilus brain lacks the structures required for memory in more sophisticated cephalopods, Crook and Basil decided to test the living fossils memory.

Training Nautilus pompilus to associate the smell of food with a blue light, the cephalopods eventually learned to respond to a flash of blue light by extending their tentacles. Then the scientists tested the cephalopods memories with a flash of light 3min, 30min, 1h, 6h, 12h and 24h after training. Amazingly, Nautilus remembered their training for up to an hour before the memory was lost, but then the memory returned 6h later, lasting up to 24h. Nautilus has both short and long term memory, just like modern cephalopods, despite lacking the same brain structures.

Crook and Basil are optimistic that the unsophisticated Nautilus brain could teach us how modern cephalopod brains evolved.


'/>"/>

Contact: Dr. Robyn Cook
robyn_crook@hotmail.com
The Company of Biologists
Source:Eurekalert

Page: 1

Related biology news :

1. Mouse study: When it comes to living longer, its better to go hungry than go running
2. Worlds oldest living tree discovered in Sweden
3. Novel living system recreates predator-prey interaction
4. Harvard researchers publish MRI images of genes in action in the living brain
5. Researchers visualize complex pigment mixtures in living cells
6. Krill discovered living in the Antarctic abyss
7. Stanford researchers say living corals thousands of years old hold clues to past climate changes
8. Captive carnivores not up to wild living
9. New technique captures chemical reactions in a single living cell at unprecedented resolution
10. New technology illuminates protein interactions in living cells
11. Researchers examine closest living relative to primates
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/27/2017)... WASHINGTON , Feb. 27, 2017   Strategic ... fund, today announced it has led a $3.5 million investment ... collaboration platform. Strategic Cyber Ventures is DC based and ... and Hank Thomas . Ron Gula , ... Tech Ventures, also participated in this series A round ...
(Date:2/24/2017)... , Feb. 24, 2017  EyeLock LLC, a leader of ... elite iris biometric solution on the latest Qualcomm® ... at Mobile World Congress 2017 (February 27 ... in Hall 3, Stand 3E10. ... Haven™ security platform—a combination of hardware, software ...
(Date:2/21/2017)... ARMONK, N.Y. and PORTLAND, Ore. ... IBM ) and the Avamere Family of Companies (Avamere ... Care) today announced a six-month research study that will ... caregivers improve eldercare at senior living and health centers. ... facilities, Avamere hopes to gain insights into physical and ...
Breaking Biology News(10 mins):
(Date:3/23/2017)... ... March 23, 2017 , ... AxioMed president, Jake Lubinski, describes ... characteristics when deformed, which is identical to how the human discs work to ... and return to its natural state along a hysteresis curve, exactly like a ...
(Date:3/23/2017)... 23, 2017  SeraCare Life Sciences, Inc., a ... vitro diagnostics manufacturers and clinical laboratories, is ... multiplexed Inherited Cancer reference material ... next-generation sequencing (NGS). The Seraseq™ Inherited Cancer DNA ... from industry experts to validate the ability ...
(Date:3/23/2017)... March 23, 2017 Kineta, Inc., a ... novel therapies in immuno-oncology, today announced the discovery ... molecule compounds that activate interferon response factor 3 ... demonstrate immune-mediated tumor regression in a murine colon ... who demonstrated complete tumor regression to initial drug ...
(Date:3/23/2017)... , March 23, 2017 In ... four equities in the Biotech industry: Sangamo Therapeutics Inc. ... Inc. (NYSE MKT: SYN), and Regulus Therapeutics Inc. (NASDAQ: ... , 2017, Credit Suisse upgraded its rating on Pharmaceuticals/Biotechnology to "Overweight" from ... their free report at: ...
Breaking Biology Technology: