HOME >> BIOLOGY >> NEWS
Scientists study how the lobster's nose knows

robotic antennule was flicked through the water over timescales similar to those seen in live lobsters - about 100 milliseconds for the fast downstroke and 300 milliseconds for the slower upstroke, with a 400 millisecond pause between each flick.

A high-speed video camera recorded the movement of the dye over and around the flicking antennule. By illuminating the fluorescent dye with a sheet of laser light, the researchers were able to visualize a two-dimensional slice of the fluid flow. Video images of the flow then were analyzed to determine where and when the dye came into contact with the antennule`s aesthetascs - tiny hairs arrayed along the length of the antennule and covered with odor-sensitive cells.

The researchers found that the rapid downstroke at the beginning of the sniff turned the antennule into a ``sieve,`` allowing water to flow between the aesthetascs and bringing the fluorescent dye directly into contact with the odor-sensitive cells. But when the antennule slowly returned to its original position, it acted more like a ``paddle``; instead of rushing between the aesthetascs, most of the dye-laden water flowed around them, leaving the pattern of dye picked up by the aesthetascs during the downstroke intact. The researchers also found that during the beginning phase of the downstroke, samples of dye that had been previously trapped between the aesthetascs were washed out, effectively resetting the lobster`s sense of smell between each sniff.

According to the study`s authors, the fast downstroke may allow the antennule to capture high-resolution information about the structure of the odorant plume, while the slow upstroke may give the lobster`s odor-sensitive cells and neural circuitry time to analyze that structure. Capturing the fine structure of the plume is important in natural air and water environments, where turbulence can cause odors to become patchy and intermittent. By providing highly detailed information about the s
'"/>

Contact: Mark Shwartz
mshwartz@stanford.edu
650-723-9296
Stanford University
29-Nov-2001


Page: 1 2 3

Related biology news :

1. Scientists to prototype cyberinfrastructure for research and education access to ocean observatories
2. Scientists sequence genome of kind of organism central to biospheres carbon cycle
3. Scientists find nanowires capable of detecting individual viruses
4. Scientists discover potential new way to control drug-resistant bacteria
5. Scientists explore genome of methane-breathing microbe
6. Scientists decipher genetic code of biothreat pathogen
7. Stuck on you: Scientists lay bare secrets of bacterial attachment proteins
8. Scientists discover proteins involved in spread of HIV-1 infection
9. Scientists fear new Ebola outbreak may explain sudden gorilla disappearance
10. Scientists reinvent DNA as template to produce organic molecules
11. Scientists visualise cellular handmaiden that restores shape to proteins

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:3/14/2016)... , Allemagne, March 14, 2016 ... http://www.apimages.com ) - --> - Renvoi : ... - --> --> ... solutions biométriques, fournit de nouveaux lecteurs d,empreintes digitales ... LF10 de DERMALOG sera utilisé pour produire des ...
(Date:3/11/2016)... , March 11, 2016 ... new market research report "Image Recognition Market by Technology ... (Marketing and Advertising), by Deployment Type (On-Premises and Cloud), ... To 2022", published by MarketsandMarkets, the global market is ... to USD 29.98 Billion by 2020, at a CAGR ...
(Date:3/10/2016)... 10, 2016   Unisys Corporation (NYSE: UIS ... (CBP) is testing its biometric identity solution at the ... to help identify certain non-U.S. citizens leaving the country. ... designed to help determine the efficiency and accuracy of using ... and will run until May 2016. --> ...
Breaking Biology News(10 mins):
(Date:5/19/2016)... ... May 19, 2016 , ... Anton Paar USA, located in Ashland, Virginia is ... complete. The new structure adds a third office building to the current facilities. ... 2.4 acres of land, along with office space adjacent to the previous main building. ...
(Date:5/19/2016)... Regen BioPharma, Inc ... announced today initiation of a preclinical development program ... cancer immunotherapeutic product leveraging its NR2F6 immunological checkpoint. ... generation of cord blood derived killer cells whose ... product in development will be a "universal donor" ...
(Date:5/18/2016)... The Biotech industry continues to face ... there are no opportunities ahead. Today, ActiveWallSt.com has on its ... THLD ), Seattle Genetics Inc. (NASDAQ: SGEN ), ... (NASDAQ: OPHT ). Sign up now to receive ... http://www.activewallst.com/ Threshold Pharmaceuticals Inc.,s shares gained 0.68%, ...
(Date:5/18/2016)... ... May 18, 2016 , ... Ryan Benton was diagnosed ... expectancy in the late teens to early twenties. DMD is a relatively common progressive ... the age of 22, Benton’s condition was critical. He met with the founder of ...
Breaking Biology Technology:
Cached News: