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:4/18/2017)... Calif. , April 18, 2017  Socionext Inc., a global ... of a media edge server, the M820, which features the company,s ... recognition software provided by Tera Probe, Inc., will be showcased during ... at the NAB show at the Las Vegas ... ...
(Date:4/11/2017)... Research and Markets has announced the addition ... their offering. ... tracking market to grow at a CAGR of 30.37% during the ... 2017-2021, has been prepared based on an in-depth market analysis with ... its growth prospects over the coming years. The report also includes ...
(Date:4/5/2017)... April 5, 2017 Today HYPR Corp. ... the server component of the HYPR platform is officially ... the end-to-end security architecture that empowers biometric authentication across ... has already secured over 15 million users across the ... of connected home product suites and physical access represent ...
Breaking Biology News(10 mins):
(Date:8/10/2017)... ... August 09, 2017 , ... As a full-service marketing agency, ... customers with the right message. Their effective, cutting-edge inbound marketing strategies are available ... how crucial the agriculture industry is,” said David Phelps, chief marketing officer at ...
(Date:8/10/2017)... ... August 09, 2017 , ... Each year in the ... recover well enough to live an independent lifestyle and, even worse, the one-year mortality ... discovery by doctors at the University of California Davis Medical Center (Sacramento) and Second ...
(Date:8/10/2017)... (PRWEB) , ... August 10, 2017 , ... DrugDev ... new educational webinar to demonstrate how Good Clinical Practice (GCP) can be ... documents. In addition the webinar will discuss the importance of GCP compliance, how sites ...
(Date:8/10/2017)... ... 2017 , ... BellBrook Labs announces the launch of their ... new high throughput screening (HTS) assay to aid researchers in their search for ... Chemical modification of gene expression, also known as epigenetics, is perhaps the most ...
Breaking Biology Technology: