HOME >> BIOLOGY >> NEWS
Contrary to common wisdom, scientist discovers some mammals can smell objects under water

ce and then were sucked back into the nostrils.

"Because the olfactory nerves in the nose are covered with mucous, odorant molecules are all water soluble," Catania said. "So, when these bubbles come into contact with an object, it is almost inevitable that odorant molecules will mix with the air and be drawn into the nose when the bubble is inhaled."

Just because the moles are getting whiffs of interesting odors underwater doesn't necessarily mean they smell them. So Catania devised some additional tests.

One of the complicating factors was the star-nosed mole's unusual nose, which is ringed by a star-shaped set of fleshy appendages. It uses its star like a super-sensitive set of fingers to identify objects it encounters while burrowing and swimming. So, at the same time it is sniffing at an object it is also fingering it with its star.

To determine if the mole can identify edible objects by sniffing alone, Catania created underwater scent trails leading to food and recorded how well the moles' could follow them. To keep the moles from using their tactile star, he put a grid-work between the animals and the scent trails. The openings in the grid were too small for the star appendages to squeeze through but large enough so the air bubbles could pass without difficulty.

These trials demonstrated that the moles could follow the scent trail by sniffing alone (without the tactile star).

Five moles were tested on earthworm scent trails and followed the trail to its reward with accuracies ranging from 75 percent to 100 percent accuracy. Two moles were tested with fish scent trails and followed them with 85 percent and 100 percent accuracy.

When the grid was replaced with a screen with openings too small for the air bubbles to pass through, however, the moles' performance dropped down to the level of chance the same as their performance with no-scent trails.

In order to see if this capability was limited to the star-nosed mole or
'"/>

Contact: David Salisbury
david.salisbury@vanderbilt.edu
615-343-6803
Vanderbilt University
20-Dec-2006


Page: 1 2 3

Related biology news :

1. Features of replication suggest viruses have common themes, vulnerabilities
2. Risk of common vaginal infection linked to preterm birth appears higher for blacks
3. New gene mutation identified in common type of dementia
4. Study identifies a common genetic risk factor for colorectal and prostate cancer
5. Researchers pit novel version of common virus against cancer
6. Gene responsible for common hearing loss identified for first time
7. OSA symptoms more common among African-American women than Caucasians
8. Sensitivity to diverse range of chemotherapeutic drugs linked to common pathway
9. Largest ever study of genetics of common diseases published today
10. First confirmed common genetic risk factors for breast cancer
11. Scripps research study shows humans and plants share common regulatory pathway

Post Your Comments:
(Date:10/31/2014)... creating green space in cities is good for attracting species, ... built environments, a University of Iowa study has found. , ... area in Iowa, and recorded the abundance of two insects ... plenty of the trees, black cherry and black walnut, they ... case fruit flies that feed on the walnuts and black ...
(Date:10/31/2014)... NEW YORK , Oct. 30, 2014 /PRNewswire-USNewswire/ ... lab, is pleased to announce its inaugural HITLAB ... at Columbia University,s Low Library. HITLAB will partner ... & Saatchi Wellness, Blueprint Health, ProtoHack, Columbia Business ... , and Columbia Industrial Engineering and Operations ...
(Date:10/30/2014)... 2014—Oligonucleotide-based therapeutics present unique challenges when it comes ... developmental harm. New consensus guidelines for toxicity testing ... biological characteristics of these novel biopharmaceuticals are presented ... journal from Mary Ann Liebert, Inc. publishers ... Nucleic Acid Therapeutics website until November ...
Breaking Biology News(10 mins):Green spaces don't ensure biodiversity in urban areas 2HITLAB Announces Inaugural HITLAB Innovators Summit 2HITLAB Announces Inaugural HITLAB Innovators Summit 3New guidelines for reproductive & developmental toxicity testing of oligonucleotide drugs 2
(Date:10/30/2014)... The report “Fragrance Ingredients Market by Type (Essential ... and Soaps & Detergents) & by Geography - Global ... the Fragrance Ingredients Market with analyses and projection of ... market has been segmented on the basis of major ... and Rest of the World (ROW); and their value ...
(Date:10/30/2014)... 2014 Deep Research Report on ... professional and in-depth research report on the China ... information, including its definition, classification, application, and industry ... research covers the international market analysis, including China’s ... covering macroeconomic environment & economic situation analysis. The ...
(Date:10/30/2014)... James Sherley says he has been working ... cell technology since his days as a principal investigator at ... late 1990’s. Sherley founded the ASCTC as a new ... the intellectual property developed in Sherley’s research over the years ... of Technology (MIT), and more recently as a senior scientist ...
(Date:10/30/2014)... Al Khaimah, UAE (PRWEB) October 30, 2014 ... appointment of Dr. James A. Manganello, Chairman of the Board, ... of The Bahamas. The appointment was made by the ... Bahamas on September 24th, 2014. , More than ... Therapy and Research Bill , Prime Minister Perry Christie said ...
Breaking Biology Technology:Fragrance Ingredients Market worth $17,104.21 Million by 2019 - New Report by MarketsandMarkets 2Fragrance Ingredients Market worth $17,104.21 Million by 2019 - New Report by MarketsandMarkets 3Fragrance Ingredients Market worth $17,104.21 Million by 2019 - New Report by MarketsandMarkets 4Fragrance Ingredients Market worth $17,104.21 Million by 2019 - New Report by MarketsandMarkets 5Naltrexone HCL Market & Nalbuphine HCL Industry Analysis for Global, China Regions Now at DeepResearchReports.com 2Naltrexone HCL Market & Nalbuphine HCL Industry Analysis for Global, China Regions Now at DeepResearchReports.com 3Boston’s Adult Stem Cell Technology Center, LLC Introduces A New Technology for Monitoring Previously Elusive Adult Stem Cells 2Boston’s Adult Stem Cell Technology Center, LLC Introduces A New Technology for Monitoring Previously Elusive Adult Stem Cells 3Boston’s Adult Stem Cell Technology Center, LLC Introduces A New Technology for Monitoring Previously Elusive Adult Stem Cells 4Grace Century’s Stem Cell Biobank Project Announces Chairman’s Appointment to National Stem Cell Ethics Committee of The Bahamas 2Grace Century’s Stem Cell Biobank Project Announces Chairman’s Appointment to National Stem Cell Ethics Committee of The Bahamas 3
Cached News: