Navigation Links
High-speed video and artificial flowers shed light on mysteries of hummingbird-pollinated flowers
Date:11/20/2012

re intriguing, says Dr Sapir: "Because flowers need pollinators to reproduce, flowers have evolved to attract pollinators. Almost all hummingbird-pollinated flowers hang down vertically, so our hypothesis was that they evolved this way because hummingbirds would have to use less energy to feed from them. We found the opposite that it's more costly in energy terms for hummingbirds to feed from these flowers."

In evolutionary terms, this means other factors must be at play. "Our findings suggest other factors may be dictating flower orientation. Flowers may need to exclude less efficient pollinators, such as insects, and so flowers that hang down vertically may be selected during evolution to increase pollination efficiency. And horizontal flowers are more exposed to rain, which can dilute the amount of nectar in a flower, and we know that hummingbirds can tell how sweet nectar is, so they may select downward-facing flowers because their nectar is less diluted by rain and thus contains the most sugar."


'/>"/>

Contact: Becky Allen
beckyallen@ntlworld.com
44-012-235-70016
Wiley
Source:Eurekalert

Page: 1 2

Related biology news :

1. BGI and Aspera collaborate on high-speed data exchange to advance genome research
2. Video-article shows how to purify magnetic bacteria
3. Can videogaming benefit young people with autism spectrum disorder?
4. Video-gaming fish play out the advantages of groups
5. Chemistry on Mars video with Curiosity Rover from the American Chemical Society
6. New video series highlights the people who fuel Americas innovation pipeline
7. First ever videos of snow leopard mother and cubs in dens recorded in Mongolia
8. Pre-surgical steps for eye surgery are standardized through JoVEs video publication
9. Camera trap video offers rare glimpse of worlds rarest gorilla
10. Spanish researcher releases a video showing a beetle from the inside
11. Nature: Video reveals wave character of particles
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/30/2015)... , June 30, 2015 To bolster its ... provider HYPR Corp. announced today the addition of two new ... serve as board advisor and David Raviv will ... team underscore HYPR Corp.,s commitment to providing the most secure ... Dimitri Sirota co-founded Layer 7 Technologies, a provider of ...
(Date:6/25/2015)... CITY , June 25, 2015  Imagine a ... steps toward a healthier, happier life. That,s exactly what ... designed to do. The cutting-edge, portable health program provides ... real-life solutions to help improve your lifestyle and nutrition. ... awards dinner and gala Wednesday night, USANA,s THA was ...
(Date:6/24/2015)... 2015 Research and ... the "Huawei Ascend Mate 7 Fingerprint Sensor ... offering. Huawei,s technological choice for the ... than Apple,s and Samsung,s one. The Ascend Mate ... Fingerprint Cards, a main actor in capacitive sensing ...
Breaking Biology News(10 mins):HYPR Corp. Expands Biometric Authentication Team with Enterprise All Stars 2HYPR Corp. Expands Biometric Authentication Team with Enterprise All Stars 3@USANAinc's Personalized Nutrition Program Wins Industry Innovation Award 2Huawei Ascend Mate 7 Fingerprint Sensor - Reverse Costing Analysis 2
... Yale is a founding member of the Genome-Wide RNAi ... centers formed to speed scientific and medical discoveries that ... is sponsored by Dharmacon, Inc. , manufacturer of ... of short, interfering ribonucleic acid sequences. The library is ...
... provide some of the most compelling evidence yet that ... standards--causes heart disease. Previous studies have linked air pollution ... understood how pollution damaged the body's blood vessels. , ... as polluted as the air in New York City, ...
... a swordtail fish, that is. As the size and ... preference for males with asymmetrical markings, according to a ... of biological sciences, and colleagues found that older female ... symmetrical males when offered a choice. These findings are ...
Cached Biology News:Yale participates in global human genome initiative 2Researchers show how air pollution can cause heart disease 2Researchers show how air pollution can cause heart disease 3Older female fish prefer imperfect male mates, study finds 2Older female fish prefer imperfect male mates, study finds 3
(Date:7/27/2015)... ... July 27, 2015 , ... ... today announced a new video: 3 Ways to GHS Labels . This ... and the Globally Harmonized System (GHS) by effectively labeling chemical containers. , “With ...
(Date:7/27/2015)... , July 27, 2015 The ... announced the winners of its annual Klerman and ... by scientists who have been supported by NARSAD ... scientists to pursue innovative ideas in neurobiological and ... of concept for the early detection, treatment, prevention ...
(Date:7/25/2015)... ... July 25, 2015 , ... Technology ... It precisely checks and adjusts the surface temperature of the measuring prism. This ... pharmaceutical industry, data traceability and documentation are key requirements. It is likely that ...
(Date:7/24/2015)... 2015 Orexigen Therapeutics, Inc. (Nasdaq: OREX ... second quarter 2015 on Thursday, August 6 before the ... business update and discuss the financial results in a ... Time (5:00 a.m. Pacific Time). The live ... 447-0521 (domestic) or (847) 413-3238 (international), participant code 40327229. ...
Breaking Biology Technology:Brady Releases “3 Roads to GHS Labels” Video 2Brain & Behavior Research Foundation Names Winners of Klerman-Freedman Prizes for Exceptional Research 2Brain & Behavior Research Foundation Names Winners of Klerman-Freedman Prizes for Exceptional Research 3Brain & Behavior Research Foundation Names Winners of Klerman-Freedman Prizes for Exceptional Research 4Brain & Behavior Research Foundation Names Winners of Klerman-Freedman Prizes for Exceptional Research 5Brain & Behavior Research Foundation Names Winners of Klerman-Freedman Prizes for Exceptional Research 6It’s T-Time for Refractometers: On-site Temperature Check Now Available 2
... Mont., June 13, 2011 Bacterin International ... BONE ), a creator and developer of revolutionary ... applications, today announced a five-year agreement with ROi ... health care supply chain management, to provide the ...
... announced that Jon LeCroy, M.D., has joined as a Managing Director in its ... expansion into the healthcare sector. Dr. LeCroy covered the same sector ... before that. He ranked #5 in this year,s W a ... e t J o u ...
... China Cord Blood Corporation (NYSE: CO ) ("CCBC" ... laboratory testing, hematopoietic stem cell processing, and stem cell storage ... quarter and fiscal year of 2011, which ended March 31, ... Highlights Revenue in the fourth quarter of ...
Cached Biology Technology:Bacterin International Signs Its Second National GPO Contract for Bacterin Biologics and Its First For Wound Drains with ROi 2Bacterin International Signs Its Second National GPO Contract for Bacterin Biologics and Its First For Wound Drains with ROi 3Bacterin International Signs Its Second National GPO Contract for Bacterin Biologics and Its First For Wound Drains with ROi 4MKM Partners Hires Biotechnology/Specialty Pharmaceuticals Analyst 2China Cord Blood Corporation Reports Financial Results for the Fourth Quarter and Full Year of Fiscal 2011 2China Cord Blood Corporation Reports Financial Results for the Fourth Quarter and Full Year of Fiscal 2011 3China Cord Blood Corporation Reports Financial Results for the Fourth Quarter and Full Year of Fiscal 2011 4China Cord Blood Corporation Reports Financial Results for the Fourth Quarter and Full Year of Fiscal 2011 5China Cord Blood Corporation Reports Financial Results for the Fourth Quarter and Full Year of Fiscal 2011 6China Cord Blood Corporation Reports Financial Results for the Fourth Quarter and Full Year of Fiscal 2011 7China Cord Blood Corporation Reports Financial Results for the Fourth Quarter and Full Year of Fiscal 2011 8China Cord Blood Corporation Reports Financial Results for the Fourth Quarter and Full Year of Fiscal 2011 9China Cord Blood Corporation Reports Financial Results for the Fourth Quarter and Full Year of Fiscal 2011 10
... Topo I, Wild Type ... Tris-HCl, 1 mM DTT, 200 µM EDTA, 20% ... topoisomerase I (Topo I) is a monomeric protein ... gene. It catalyzes the relaxation of both positive ...
RNase-Free DNase 50 l...
Request Info...
... a DNA-dependent RNA polymerase which is stringently ... efficiently synthesizes in vitro transcripts from almost ... a T7 promoter. Transcripts can be ... vitro translation, substrates in RNA processing systems, ...
Biology Products: