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:5/16/2016)... , May 16, 2016   EyeLock LLC ... today announced the opening of an IoT Center of ... strengthen and expand the development of embedded iris biometric ... unprecedented level of convenience and security with unmatched biometric ... one,s identity aside from DNA. EyeLock,s platform uses video ...
(Date:4/28/2016)... , April 28, 2016 First quarter 2016: ... up 966% compared with the first quarter of 2015 ... SEK 589.1 M (loss: 18.8) and the operating margin was 40% ... 0.32) Cash flow from operations was SEK 249.9 M ... revenue guidance is unchanged, SEK 7,000-8,500 M. The operating ...
(Date:4/15/2016)... -- Research and Markets has announced the ...  report to their offering.  ,      ... gait biometrics market is expected to grow at ... Gait analysis generates multiple variables such ... compute factors that are not or cannot be ...
Breaking Biology News(10 mins):
(Date:6/27/2016)... ... June 27, 2016 , ... Parallel 6 , the leading ... the Clinical Reach Virtual Patient Encounter CONSULT module which enables both audio ... and clinical trial team. , Using the CONSULT module, patients and physicians can schedule ...
(Date:6/24/2016)... June 24, 2016  Regular discussions on a range of ... between the two entities said Poloz. Speaking at ... Ottawa , he pointed to the country,s inflation target, ... government. "In certain ... institutions have common economic goals, why not sit down and ...
(Date:6/23/2016)... , ... June 23, 2016 , ... ... pleased to announce the launch of their brand, UP4™ Probiotics, into Target stores ... 35 years, is proud to add Target to its list of well-respected retailers. ...
(Date:6/23/2016)... , ... June 23, 2016 , ... ... YM (Yeast and Mold) microbial test has received AOAC Research Institute approval 061601. ... microbial tests introduced last year,” stated Bob Salter, Vice President of Regulatory and ...
Breaking Biology Technology:
Cached News: