Sunday, October 2, 2011

Glow-In-The-Dark Millipede Says 'Stay Away'

1.) Five facts that I learned after reading the article, "Glow-In-The-Dark Millipede Says 'Stay Away'", is:

-The nightly glow of millipedes belonging to the genus Motyxia helps the multi-legged invertebrates avoid attacks by predators.
-12.000 species of millipedes have been discovered, but it is believed by biologists that around 100,000 are still undiscovered.
-The Motyxia spend the day underground, but even though they are blind, they somehow sense when night falls, and come to the surface to forage and mate.
- When they are disturbed, they ooze toxic cyanide and other foul-tasting chemicals from small pores running along the sides of their bodies as a defense mechanism.
-Just like all other millipedes, Motyxia are vegetarians, feeding mostly on decaying plant material, but in the course of adapting to a lifestyle primarily underground, they lost the ability to see.


2.) I know that the scientists involved in the experiment used the scientific method because they had a purpose, which was to answer the question, why does the phenomenon, bioluminescence, occur? After researching about the topic, the scientists came up with a hypothesis. "Marek and his coworkers hypothesized by using bioluminescence as a warning signal, luminescent millipedes would be attacked less than non-luminescent ones." They then designed an experiment to test the hypothesis. After their experiment they analyzed the results and came to a conclusion, which was that the Motyxia millipede does use their bioluminescent capabilities to prevent being attacked by predators, such as the grasshopper mouse. This shows that the scientists did use the scientific method when doing this experiment.

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