Navigation Links
Caterpillars mimic one another for survival
Date:12/16/2011

erfly, scientists estimate about 99 percent of caterpillars die before reaching the pupal stage. Survival tactics include sharp spines, toxic chemicals and hairs accompanied by bright warning coloration.

The study focuses on two groups of Neotropical caterpillars: Danaini of the Caribbean Island of Hispaniola and Ithomiini of the upper Amazon in eastern Ecuador. Sourakov raised and observed danaine caterpillars, including the monarch butterfly and its relatives. These species apparently form Mllerian mimicry rings, in which toxic species adopt the same warning color patterns so a predator will more quickly learn which species to avoid.

In Ecuador, Willmott and study co-author Marianne Elias, from the Musum National d'Histoire Naturelle in Paris, found that 22 of 41 ithomiine caterpillars displayed some kind of warning coloration. Five exhibited a previously undocumented pattern with a bright yellow body and blue tips, and four were likely Batesian mimics, in which edible species adopt the coloration of an unpalatable model species for protection. These "freeloaders" only appear to have the defense mechanisms of the model species.

"They act almost like parasites, because the mimics are actually edible and therefore deceive predators without having to invest in costly resources to maintain toxicity," Willmott said. "Such a system can only be stable when the mimics are relatively rare, otherwise predators will learn the trick and attack more individuals of both mimics and models, driving models to evolve novel color patterns to escape the predators."

Mimicry may be relatively rare in caterpillars because it is more difficult for them to establish bright coloration, Willmott said. A brightly colored caterpillar has less chance of evading predators than a mobile adult butterfly.

"In adults, bright coloration may be favored by sexual selection for signaling to males and females," Willmott said. "Bright colors may be disadvan
'/>"/>

Contact: Richard Levine
rlevine@entsoc.org
301-731-4535
Entomological Society of America
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Lethal backfire: Green odor with fatal consequences for voracious caterpillars
2. Flower power puts a hurt on caterpillars
3. Scientists create tough ceramic that mimics mother of pearl
4. Implants mimic infection to rally immune system against tumors
5. Hormone-mimics in plastic water bottles -- just the tip of the iceberg?
6. Some vocal-mimicking animals, particularly parrots, can move to a musical beat
7. Synthetic catalyst mimics natures hydrogen economy
8. Small molecules mimic natural gene regulators
9. Clemson research nets $2 million from NSF to mimic natures probes
10. Engineering team to design and study liver mimics
11. Animal behavioral studies can mimic human behavior
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/29/2014)... bacteria and algae, propel themselves using whip-like appendages ... a millimetre long, function like tiny oars, helping ... cilia are found on the surfaces of many ... liquids over the cell. , Flagella and ... expel pathogens from our airways, they establish the ...
(Date:7/28/2014)... by the University of Arizona has sequenced the complete ... enhance scientists, and agriculturalists, understanding of the growing patterns ... of new rice varieties that are better able to ... hunger challenges. , The paper, "The genome sequence of ... independent domestication," was published online in Nature Genetics ...
(Date:7/28/2014)... A study of juvenile rat brain cells suggests that ... the connections between brain cells are temporary. , The ... PLOS ONE , was conducted by biologists at ... Medical College in New York in response to concerns, ... decade, that exposing children to general anesthetics may increase ...
Breaking Biology News(10 mins):Microscopic rowing -- without a cox 2Microscopic rowing -- without a cox 3Generating a genome to feed the world: UA-led team sequences African rice 2Generating a genome to feed the world: UA-led team sequences African rice 3Generating a genome to feed the world: UA-led team sequences African rice 4Study suggests disruptive effects of anesthesia on brain cell connections are temporary 2Study suggests disruptive effects of anesthesia on brain cell connections are temporary 3
... examines how pain relief improves greatly when the sufferer can ... In an Anglo-Italian study, thirty healthy subjects were invited to ... an object, while their hand was subjected to laser-induced pain. ... , showed that, when the sufferer could see their own ...
... in products like laminate countertops may also help cement ... Kansas State University researcher. Susan Sun directs K-State,s ... materials. Her research group is studying adhesives made from ... "There are two important forces driving this research," Sun ...
... Oct. 29, 2009 Researchers at UT Southwestern Medical ... mice by using an investigative drug called BEZ235 in ... in the October issue of Cancer Research , ... before they damaged the DNA of tumor cells with ...
Cached Biology News:Improved adhesive for products like transparent tape could benefit biofuels economy 2Improved adhesive for products like transparent tape could benefit biofuels economy 3UT Southwestern researchers use drug-radiation combo to eradicate lung cancer 2
(Date:7/29/2014)... a new way of manufacturing microstructured surfaces that ... self-assembly of carbon nanotubes, could exhibit a variety ... and strength, or the ability to repel water ... that mechanical forces can be used to direct ... we can independently control the mechanical properties ...
(Date:7/29/2014)... 29, 2014  Discovery Laboratories, Inc. (Nasdaq: DSCO),  ... new standard of respiratory critical care, will report its ... 2014 before the open of the U.S. financial ... a live teleconference and webcast at 9:00 a.m. Eastern ... Discovery Labs, management will discuss the 2014 second ...
(Date:7/29/2014)... CO (PRWEB) July 29, 2014 TransVac ... soiled linen collection and transport solutions for hospitals, will ... for Healthcare Engineering (ASHE) Annual Conference & Technical Exhibition ... will present its technology for making hospitals cleaner, reducing ... costs over the hospital’s life cycle. Staff will ...
(Date:7/29/2014)... 2014 DisasterTalk is a texting app which ... phone masts or other transmitters are down. The app can ... without the need for any Wi-Fi, and can also use ... new app has launched as a housing report ... high risk of being affected by natural disasters. With the ...
Breaking Biology Technology:A new way to make microstructured surfaces 2Discovery Labs to Report 2014 Second Quarter Financial Results and Hold Conference Call on Tuesday, August 5, 2014 at 9:00 a.m. Eastern Time 2TransVac Presents Cost Saving Technology at ASHE Conference for Keeping Hospitals Cleaner 2DisasterTalk App Could Save Lives as Report Reveals 8% of US Homes at Very High Risk of Natural Disaster 2
... September 25 XTL,Biopharmaceuticals Ltd. (NASDAQ: XTLB ; ... Meeting ("AGM") and Extraordinary General Meeting,("EGM") was postponed for ... to the absence of a quorum. The postponed AGM ... Kiryat Weizmann Science Park,Rehovot, Israel 76100 at 4:00 pm ...
... REHOVOT, Israel, Sept. 25 ,Monsanto Company (NYSE: ... announced,a collaboration to improve nitrogen use efficiency in ... gains exclusive rights to,a number of genes discovered ... applications of nitrogen. Monsanto will work to evaluate ...
... Plc, a,private biopharmaceutical company focusing on first-in-class, ... appointed Dr.,Johnson Lau and Dr. David Sidransky ... Johnson Lau (MBBS, MD, FRCP) brings a ... corporate fields, having a distinguished,background in both ...
Cached Biology Technology:XTL Biopharmaceuticals Ltd. AGM / EGM Postponed Until October 2, 2007 2Monsanto and Evogene Collaborate on Nitrogen Use Efficiency Research 2Monsanto and Evogene Collaborate on Nitrogen Use Efficiency Research 3Morria Biopharmaceuticals Plc Appoints Dr. Johnson Lau and Dr. David Sidransky to Board of Directors 2
... Bruker Daltonics and Bruker BioSpins ... for metabolism studies, and analysis of ... ESI-TOF system, an optional Avance NMR ... acquisition, evaluation and statistical analysis for ...
... Morris Water MazeRecords animal movements in a ... subjects at once in a predefined sequence of ... instruments all built around a video camera, frame ... track two fields at once and up to ...
... Records behavior directed toward examining a novel object ... family of instruments all built around a video ... that can track two fields at once and ... extracts animal positions and records them, but also ...
... Grade C 19 H 9 Br 4 ... SPECIFICATIONS Form: Powder Clarity of Solution: Passes ... - Yellow pH 4.6 - Blue ... agarose and acrylamide gel electrophoresis. Used in ...
Biology Products: