Navigation Links
Monarch butterflies help explain why parasites harm hosts
Date:5/14/2008

Athens, Ga. Its a paradox that has confounded evolutionary biologists since Charles Darwin published On the Origin of Species in 1859: Since parasites depend on their hosts for survival, why do they harm them?

A new University of Georgia and Emory University study of monarch butterflies and the microscopic parasites that hitch a ride on them finds that the parasites strike a middle ground between the benefits gained by reproducing rapidly and the costs to their hosts. The study, published in the early online edition of the journal Proceedings of the National Academy of Sciences, provides the first empirical evidence in a natural system of whats called the trade-off hypothesis.

Parasites have to harm their host to replicate and be transmitted, said lead author Jacobus de Roode, a former post-doctoral researcher at UGA and now an assistant professor at Emory University. But what this study found is that if they harm their host too much, theyll suffer too. On the other hand, this study also shows that it does not benefit the parasite to be maximally benign, because those parasites dont replicate enough to be effectively transmitted.

In a painstaking, three-year study conducted in the laboratory of Sonia Altizer, assistant professor in the UGA Odum School of Ecology, researchers infected monarch caterpillars with varying levels of spores from a protozoan parasite commonly found in wild populations. After the adult butterflies emerged, females were mated and placed in outdoor mesh cages. The butterflies spread the parasites when they deposit spores onto eggs or leaves of the milkweed plants that caterpillars feed on. These spores are then consumed by caterpillars as they feed. Each butterfly had one stalk of milkweed in its cage, and every day for up to 30 days the researchers gave the butterflies a new stalk while taking the previous stalk back to the lab for analysis. The spores on the eggs and on the milkweed were counted, which i
'/>"/>

Contact: Sam Fahmy
sfahmy@uga.edu
706-542-5361
University of Georgia
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Smell-wars between butterflies and ants
2. Genetic breakthrough explains dangerously high blood glucose levels
3. Computers explain why pears may become brown during commercial storage
4. The Uukuniemi virus helps to explain the infection mechanism of bunyaviruses
5. Private Rocketeers reach for space -- science writer in Canada to explain
6. Professors video series explains all facets of Earth
7. New research explains link between smoking and SIDS
8. Study helps explain how allergic reactions are triggered
9. Snoozing worms help Penn researchers explain the evolution of sleep
10. Bodily breakdown explained: How cell differentiation patterns suppress somatic evolution
11. Can interacting pathogens explain disease patterns?
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Monarch butterflies help explain why parasites harm hosts
(Date:1/22/2015)... NEW YORK and POINT ROBERTS, Washington ... global news source covering leading sectors including technology and tech ... Personal Privacy marketplace featuring master pickpocket and security consultant ... wallet is stolen and talks about the Wocket™ biometric smart ...
(Date:1/22/2015)... N.C. , Jan. 22, 2015 Infinisource has launched ... of the G2 model. The G2 sets a higher standard ... iSolved human capital management solution. With plug-and-play installation, touch screen ... time clock provides a robust time collection solution for the ...
(Date:12/19/2014)... 18, 2014 Research and Markets ( http://www.researchandmarkets.com/research/8kmfcn/iphone_5s ... 5S Fingerprint Sensor - Apple/AuthenTec TMDR92 & Sapphire - ... http://photos.prnewswire.com/prnh/20130307/600769 Following the ... fingerprint reading feature with the iPhone 5S. It is ...
Breaking Biology News(10 mins):Apollo Robbins Talks about the Illusion of Personal Safety and How Easily Your Wallet is Stolen; If a Wocket Wallet is Stolen the Thief Can't do Anything With it! 2Apollo Robbins Talks about the Illusion of Personal Safety and How Easily Your Wallet is Stolen; If a Wocket Wallet is Stolen the Thief Can't do Anything With it! 3Infinisource's NXG series sets new time clock standard 2iPhone 5S Fingerprint Sensor - Apple/AuthenTec TMDR92 & Sapphire - Technology Report 2
... their existence without thousands of proteins performing myriad vital ... the study of protein structure and function can lead ... disorders. For example, the discovery of insulin’s role in ... treatment based on insulin injections. Yet, despite enormous research ...
... a paper that will be published online in advance of ... and colleagues (The Salk Institute and HHMI) demonstrate that ... as in animals. , "These findings will influence our thinking ... to understand why cells use them as signaling compartments," noted ...
... Center researchers helps explain how “memory” T cells protect ... today in Proceedings of the National Academy of Science ... organs where immune cells reside and proliferate, but also ... spread of an invading virus occurs. , After becoming ...
Cached Biology News:Weizmann Institute scientists develop a general 'control switch' for protein activity 2Weizmann Institute scientists develop a general 'control switch' for protein activity 3How 'memory' T cells curb the spread of viruses throughout the body 2
(Date:1/22/2015)... 22, 2015 Shimadzu Scientific Instruments ... multipurpose UV-visible spectrophotometer. Offering wavelength scanning from 190 ... ideal for applications in a variety of industries, ... The user-friendly UV-1280 enables intuitive operation, while the ...
(Date:1/22/2015)... NH (PRWEB) January 22, 2015 GEA ... a table top laboratory homogenizer, the PandaPLUS 2000, which ... nanodispersions, nanoemulsions , and cell disruption . This ... dairy products, fruit juices, liquid food, food additives and ...
(Date:1/22/2015)... Cambridge Semantics, the leading provider of smart data solutions driven ... record-breaking year across the board for the company. , ... and our Smart Data solutions, our customers were able to ... to record growth for the company in 2014,” said Alok ...
(Date:1/22/2015)... 22, 2015 Protocol Networks brings independent ... team of brand-neutral, independent consultants, Protocol Networks has recently ... that over the years, his company has attracted several ... of Plainfield, as well as others. With the success ...
Breaking Biology Technology:Shimadzu’s New Monitored Single-Beam UV-Vis Spectrophotometer Offers Comprehensive Measurement Options in a Compact Body 2GEA Niro Soavi Announces the PandaPLUS 2000 Homogenizer for Processing New Applications for Nanoemulsions and Cell Disruption 2Cambridge Semantics Announces Record Results for 2014 2Protocol Networks Brings Independent Technology Consulting to the Constitution State 2
... time again for the half-year roundup of stock market results for ... the results from the first quarter, it was pretty dismal for ... Nasdaq National Market down 8 percent , Nasdaq Biotech down 16% ... great trend. As you can see below, the results for the ...
... profound impact on farming much the same as people would ... dot-com businesses, though many might not realize it. , , ... family farm in Loyal, WI, will showcase the latest technology ... on Tuesday, July 12, and runs thru Thursday, July 14. ...
... Crosse, Wis. - Merkle Inc. , has ... a data quality software solution, to modify their data ... customers the ability to customize and aggregate information, cleanse ... and provide association and householding capabilities. Users also have ...
Cached Biology Technology:Midwest large cap life sciences mostly outperform market 2Midwest large cap life sciences mostly outperform market 3Farmers explore technology at Wisconsin event 2
In Western blotting antibodies recognize 94 K protein band, which corresponds to S-layer protein...
High affinity antibodies recognizes HSP70 protein from human cardiac tissue. Could be used for Westerb blotting application, ELISA....
The VersArray hybridization chamber is used for manual (coverslip) hybridization of microarrays. The chamber accommodates 2 slides and is watertight to allow incubation of slides in a water bath. Dim...
... PROTECT FROM LIGHT. Useful in cell activation experiments when ... by TLC. Soluble in DMSO or EtOH. ... mM stock in DMSO is recommended. Microliter amounts of ... with rapid mixing (e.g. 10 μl into 5 ml ...
Biology Products: