Navigation Links
Natural 'keystone molecules' punch over their weight in ecosystems
Date:5/15/2013

Naturally occurring "keystone" molecules that have powerful behavioral effects on diverse organisms often play large but unrecognized roles in structuring ecosystems, according to a theory proposed in the June issue of BioScience. The authors of the theory, Ryan P. Ferrer of Seattle Pacific University and Richard K. Zimmer of the University of California at Los Angeles, liken such molecules to keystone species, animals or plants that may be uncommon but exert a controlling influence, through predation or in other ways. Keystone molecules function in chemical communication and defense, and likewise have dominant consequences in nature.

Ferrer and Zimmer give four examples of keystone molecules. DMSP is a simple chemical, synthesized by single-celled marine organisms, that has powerful effects on bacteria, and through its breakdown products, on the foraging of seabirds. Saxitoxin is a potent poison, also produced by marine microbes, that repels some grazing animals but can cause massive die-offs of fishes, seabirds, and marine mammals. Tetrodotoxin is another toxic keystone molecule, but produced in the skin of newts. It prompts newt larvae to hide to avoid being cannibalized and also deters some predators. Garter snakes that feed on newts, however, can accumulate the toxin in their own tissues, which in turn provides them with predator protection. Pyrrolizidine akaloids, which are synthesized by many plants, repel most plant-eaters, but are consumed by some moths, which recycle the alkaloids and convert them into a powerful volatile pheromone that attracts mates.

Because of their multifunctional effects and importance in the sea, in fresh water, and on land, keystone molecules deserve special attention from managers seeking to conserve species, Ferrer and Zimmer argue. The loss of a species that produces or captures a keystone molecule in an area could have far-reaching effects, as could the arrival of a non-native species that disrupts flows of t
'/>"/>

Contact: Tim Beardsley
tbeardsley@aibs.org
703-674-2500 x326
American Institute of Biological Sciences
Source:Eurekalert

Page: 1 2

Related biology news :

1. 3D simulation shows how form of complex organs evolves by natural selection
2. University of Southern California scientists reveal natural process that blocks viruses
3. North Carolina Natural Heritage Program earns 2013 Award for Science and Technical Achievement
4. Methane emissions from natural gas local distribution focus of new study
5. New emissions standards would fuel shift from coal to natural gas
6. Men may have natural aversion to adultery with friends wives
7. The natural ecosystems in the Colombian Orinoco Basin are in danger
8. Walking in the footsteps of 19th and 20th century naturalists
9. Newly identified natural protein blocks HIV, other deadly viruses
10. Nitrogen from pollution, natural sources causes growth of toxic algae, study finds
11. Recreating natural complex gene regulation
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/11/2015)... --  The Sync Project™ today announced the ... harness music to improve health. The platform maps ... of physiology, enabling the study of the therapeutic ... It is designed for medical and health research, ... and accelerate the discovery of the clinical applications ...
(Date:3/5/2015)... SAO PAULO , March 5, 2015 In ... with 41 percent of companies already using these solutions and ... of 2015. Of the latter, approximately 25 percent of the ... time. While the majority of companies in the ... is anticipated that the hybrid model will command significant attention ...
(Date:3/2/2015)... 2015   Neurotechnology , a provider of high-precision ... SentiGaze Software Development Kit (SDK). The SentiGaze algorithm ... off-the-shelf webcams to track eye movements and generate heatmaps ... Heatmaps can be used for applications such as analysis ... The SDK can also be used to develop interfaces ...
Breaking Biology News(10 mins):Introducing The Sync Project, a Global Collaboration Harnessing the Scientific Potential of Music for Health 2Introducing The Sync Project, a Global Collaboration Harnessing the Scientific Potential of Music for Health 3Two of Every Three Brazilian Companies will have Invested in Cloud by 2015, Finds Frost & Sullivan 2Two of Every Three Brazilian Companies will have Invested in Cloud by 2015, Finds Frost & Sullivan 3Two of Every Three Brazilian Companies will have Invested in Cloud by 2015, Finds Frost & Sullivan 4Neurotechnology Releases SentiGaze SDK for Eye Movement Tracking Using Ordinary Webcams 2Neurotechnology Releases SentiGaze SDK for Eye Movement Tracking Using Ordinary Webcams 3
... Scientists have determined that Helicobacter pylori, the bacterium that ... requires the vitamin B6 to establish and maintain chronic ... online journal mBio . This finding, along ... to utilize the vitamin, could lead to the development ...
... in academia bemoan the fact that their lifestyles do ... they would like. Surprisingly, male scientists harbor more regrets ... University sociologist Elaine Howard Ecklund. Ecklund and co-author ... of career, life outside work and the intersection of ...
... Georgia Institute of Technology has received a $10 million ... (NSF) to develop novel computing techniques for measuring and ... will be used to enable new approaches for identifying ... In addition, these methods may potentially improve the delivery ...
Cached Biology News:Rice sociologist finds male scientists regret parenthood decisions more than female counterparts 2Rice sociologist finds male scientists regret parenthood decisions more than female counterparts 3NSF awards $10M to develop computing techniques for measuring and analyzing child behavior 2NSF awards $10M to develop computing techniques for measuring and analyzing child behavior 3
(Date:3/27/2015)... YORK , March 27, 2015   ... in liquid photopurification, announced today that the Company ... for the continued trading of SurePure ("SURP") securities ... venture marketplace for entrepreneurial and development stage companies. ... Group introduced standards and eligibility requirements designed to ...
(Date:3/27/2015)... ROCKVILLE, Md. , March 27, 2015  CASI ... dedicated to the acquisition, development and commercialization of innovative ... the global market with a commercial focus on ... the three and 12 months ended December 31, 2014.  ... of ($1.6 million), or ($0.05) per share, for the ...
(Date:3/26/2015)... - SQI Diagnostics Inc. ("SQI" or the "Company") (TSX-V: ... matters, including the appointment of auditors, its annual and ... (the "Meeting") was adjourned, as previously disclosed on March ... ( Toronto time). The date of ... disclosed. The Meeting will reconvene at the offices of ...
(Date:3/26/2015)... Neogen Corporation (NASDAQ: NEOG ) announced ... of fiscal 2015, which ended Feb. 28, increased 13% ... Earnings per share in the current quarter were $0.20, ... income increased 17% over prior year to $24,142,000, or ... share, for the same period a year ago. ...
Breaking Biology Technology:SurePure Completes Verification and Approved for Trading on the OTCQB Marketplace 2CASI Pharmaceuticals Reports 2014 Fourth Quarter And Full Year Financial Results 2CASI Pharmaceuticals Reports 2014 Fourth Quarter And Full Year Financial Results 3CASI Pharmaceuticals Reports 2014 Fourth Quarter And Full Year Financial Results 4CASI Pharmaceuticals Reports 2014 Fourth Quarter And Full Year Financial Results 5CASI Pharmaceuticals Reports 2014 Fourth Quarter And Full Year Financial Results 6SQI Diagnostics Inc. Announces Adjournment of Meeting 2Neogen reports 13% increase in net income 2Neogen reports 13% increase in net income 3Neogen reports 13% increase in net income 4Neogen reports 13% increase in net income 5Neogen reports 13% increase in net income 6Neogen reports 13% increase in net income 7Neogen reports 13% increase in net income 8
... Recent events in Japan have caused the world to ... be a cause for concern – especially if radiation ... proliferating cells of the body. Cells of the hematopoietic ... two such cell types. Damage to these cells initiates ...
... Inc. (Nasdaq: TNGN ), a leader in regenerative ... live audio webcast on Friday, March 25, 2011 at 8:30 ... fourth quarter 2010 financial results.   To participate ... and reference access code 55045101. This conference ...
... 2011 Veran Medical Technologies announced today that it has ... in the financing included existing investors and a new strategic ... commercialize products on the IG4 four-dimensional image guidance platform of ... as it will enable us to rapidly commercialize the products ...
Cached Biology Technology:Existing Radiation Countermeasures Inadequate! Development of Rx100 Promises Change! 2Existing Radiation Countermeasures Inadequate! Development of Rx100 Promises Change! 3Tengion To Host Conference Call To Provide a Business Update and Report Fourth Quarter 2010 Financial Results on March 25, 2011 2
RABBIT ANTI GLYCINE...
Request Info...
... Cytomegalovirus (CMV) pp65 Antigenemia Immunofluorescence Assay (IFA) ... lower matrix protein pp65 of CMV in ... Erythrocyte Lysis Buffer ... 220 mL of buffered ammonium chloride. (NH4CL) ...
CHIMAERIC HUMAN IgA2 ANTI NP...
Biology Products: