Navigation Links
Poisonous tears
Date:5/16/2011

This release is available in German.

For years Professor Leo von Hemmen, a biophysicist at the TU Muenchen, and Professor Bruce Young, a biologist at the University of Massachusetts Lowell, have been researching the sense of hearing in snakes. While discussing the toxicity of their snakes, it dawned on them that only few snakes inject their venom into their victims' bodies using hollow poison fangs. Yet, even though the vast majority of poisonous reptiles lack hollow fangs, they are effective predators.

Only around one seventh of all poisonous snakes, like the rattlesnake, rely on the trick with the hollow poison fang. The vast majority has developed another system. A typical representative of this class is the mangrove pit viper, Boiga dendrophila. Using its twin fangs, it punches holes into the skin of its victims. The venom flows into the wound between the teeth and the tissue. But there is an even easier way: many poison fangs simply have a groove the venom flows along to enter the wound.

The researchers asked themselves how this simple method could be so successful from an evolutionary perspective, considering that bird feathers, for example, should be able to easily brush away any venom flowing along an open groove. To get to the bottom of this mystery, they investigated the surface tension and viscosity of various snake venoms. The measurements showed that snake venom is amazingly viscous.

The surface tension is high, about the same as that of water. As a result, the surface energy pulls the drops into the fang grooves, where they then spread out. In the course of evolution, snakes have adapted to their respective preferred prey using a combination of optimal fang groove geometry and venom viscosity. Snakes that prey on birds developed deeper grooves to keep the viscous venom from being brushed away by bird feathers.


'/>"/>
Contact: Dr. Andreas Battenberg
battenberg@zv.tum.de
49-892-891-0510
Technische Universitaet Muenchen
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Poisonous prehistoric raptor discovered by research team from Kansas and China
2. Poisonous Poisson
3. Rotator cuff tears: Are they all in the family?
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Poisonous tears
(Date:11/21/2014)... , November 18, 2014 ... Systems Market by Systems (Video, RFID, Access Control, Intrusion ... Factories, Hotels, Banks, Government), Component Service Geography - Global ... Systems Market is projected to be around $25 Billion ... by 2020, growing at a CAGR of 8.69%. ...
(Date:11/21/2014)... YORK , Nov. 19, 2014  Earlier this ... at New York College, and one of the most ... biosensor signals that are transmitted from Smartphones to third ... were Smartphones and has one of the earliest known ... discussing its usage in the military, child care, elder ...
(Date:11/21/2014)... 2014 Strict laws against distracted driving and ... North American and European automotive sector towards gesture recognition ... systems that are intuitive and able to retrieve information ... New analysis from Frost & Sullivan,s ... Europe and North ...
Breaking Biology News(10 mins):Industrial Security Systems Market Worth $38 Billion by 2020 2Industrial Security Systems Market Worth $38 Billion by 2020 3Patented Biosensor Wearable Technology Provides a More Civilized Method of Quarantine 2Patented Biosensor Wearable Technology Provides a More Civilized Method of Quarantine 3Patented Biosensor Wearable Technology Provides a More Civilized Method of Quarantine 4Gesture Recognition Intensifies with the Rise of In-car Smartphone Integration, Says Frost & Sullivan 2Gesture Recognition Intensifies with the Rise of In-car Smartphone Integration, Says Frost & Sullivan 3Gesture Recognition Intensifies with the Rise of In-car Smartphone Integration, Says Frost & Sullivan 4
... is one of the important transducers of noxious stimuli ... of neurogenic inflammation and hyperalgesia. However, there is no ... A1 contributes to neuropeptide release from primary afferent neurons. ... Hyogo College of Medicine in Japan demonstrated for the ...
... has found that both real and sham acupuncture treatments may ... breast cancer. Published early online in CANCER , a ... help clinicians improve care for cancer patients. The results also ... or may, like real acupuncture, have beneficial effects. Breast ...
... JOLLA, CADecember 22, 2013Scientists at The Scripps Research Institute ... payoffit enables the rapid selection of chemical compounds that ... how the compounds work. To illustrate the power ... to identify a compound that shows promise for treating ...
Cached Biology News:Breast cancer patients experience fewer side effects from anticancer drug when receiving acupuncture 2Innovative screening strategy swiftly uncovers new drug candidates, new biology 2Innovative screening strategy swiftly uncovers new drug candidates, new biology 3Innovative screening strategy swiftly uncovers new drug candidates, new biology 4
(Date:11/28/2014)... FAIRFIELD, Conn. (PRWEB) November 28, 2014 ... (AACN) has honored Fairfield University’s School of Nursing ... in Nursing Leadership (LEAD) program. The 2014 Innovations ... work of AACN member schools and supports them ... It was recently presented at AACN’s annual meeting ...
(Date:11/28/2014)... November 28, 2014 The report provides ... all the important sub-segments of the market, in order ... maps the growth rates and market sizes for each ... to witness rapid growth. It also includes analysis of ... company profiles include the financial performances, product portfolios, and ...
(Date:11/27/2014)... (PRWEB) November 27, 2014 The ... segments the market to provide crucial revenue forecasts. ... by 2018, growing at a CAGR of 7.5%, ... TOC of the Europe Thermal Protective Clothing market ... and in-depth analysis supported by various tables and ...
(Date:11/27/2014)... Research and Markets  has ... Industry Report 2014" report to their offering. ... Global Palmitic Acid Industry Report 2014 is a professional ... global palmitic acid industry. The report provides ... applications and industry chain structure. The palmitic acid market ...
Breaking Biology Technology:American Association of Colleges of Nursing honors Fairfield University’s School of Nursing for Re-envisioning Nursing Education 2Glycomics Market by Application, Product & End-Users is estimated to reach $928.11 Million by 2019 - New Research Report by MarketsandMarkets 2Glycomics Market by Application, Product & End-Users is estimated to reach $928.11 Million by 2019 - New Research Report by MarketsandMarkets 3Glycomics Market by Application, Product & End-Users is estimated to reach $928.11 Million by 2019 - New Research Report by MarketsandMarkets 4Glycomics Market by Application, Product & End-Users is estimated to reach $928.11 Million by 2019 - New Research Report by MarketsandMarkets 5The Europe Thermal Protective Clothing market is estimated to grow up to $577.9 million by 2018 - Report by MicroMarket Monitor 2The Europe Thermal Protective Clothing market is estimated to grow up to $577.9 million by 2018 - Report by MicroMarket Monitor 3Global Palmitic Acid Industry Report 2014 2
... Funds will ... ... (PHRI) has received $2.8 million in research funding from the National Cancer Institute (NCI) to continue ... for two more years. , , , , ,Since 2002, PHRI has participated in the ...
... CHENGDU, China, Aug. 31 /PRNewswire-Asia-FirstCall/ -- Tianyin,Pharmaceutical Co. ... and,supplier of modernized traditional Chinese medicine ("TCM") and generic,pharmaceuticals in ... &,Renshaw Annual Global Investment Conference, to be held September 9-11, ... , Mr. Stewart Lor, Director, is ...
... FREDERICK, Md., Aug. 28 SABiosciences announces its inclusion on ... Best Places to Work Industry Survey. Best Places to Work is ... dedicated management, and innovative ways to motivate their workforce. SABiosciences ranked ... pharmaceutical companies. , , "We are ...
Cached Biology Technology:Pacific Health Research Institute Awarded $2.8 Million in Research Funding 2Pacific Health Research Institute Awarded $2.8 Million in Research Funding 3Tianyin Pharmaceutical, Co. to Present at the Rodman & Renshaw Annual Global Investment Conference on September 11 at 10:50 am ET 2Tianyin Pharmaceutical, Co. to Present at the Rodman & Renshaw Annual Global Investment Conference on September 11 at 10:50 am ET 3SABiosciences Ranked 17th on the Best Places to Work Industry Award for Biotech and Pharmaceutical Companies 2
Rabbit polyclonal to Raf1 ( Abpromise for all tested applications). entrezGeneID: 5894 SwissProtID: P04049...
Rabbit anti MMP-13, Hinge Region MMP-13 Hinge Region...
Rabbit polyclonal to MAP3K12 ( Abpromise for all tested applications). Antigen: Synthetic peptide conjugated to KLH from the C-terminal region of human MAP3K12 Entrez Gene ID: 7786 Swiss ...
Amino-acids and Derivatives Rabbit Anti-conjugated L-isoleucine Polyclonal Antibody...
Biology Products: