kitchen table hypotheses: The Joke's on Us
The Kitchen - The Big Bang Theory Wiki
A lot of organisms emit light. Of course you know fireflies, but there are also otherluminescent organisms such as some fishes, mushrooms, bacteria, dinoflagellates, andshellfishes. The culture of luminescent bacteria is not difficult. What you have to do isto get a strain of luminescent and harmless bacteria and raise it in a suitable culturemedium. A bacterium widely cultured and used also for lessons in schools is the Photobacteriumphosphoreum, now renamed: Vibrio phosphoreum.
Search for information about the mechanism of the bioluminescence. You can findinformation for this culture and general information on the Internet at sites listedlater. There is a lot of information on bioluminescence on the Internet. There are evenamateur sites devoted to this topic. You can buy the Vibrio phosphoreum at commercially,such as the ATCC (American Type Culture Collection) .You can find other firms of this type on the Internet, using the keywords: culturecollection. Also try the links for the protists experiment. These companies also supplythe culture media and in their sites you can often read their composition.
: In these experiments, need thehelp of a biologist to avoid culturing dangerous microorganisms. Even with help, keep thecultures only for a short time, wash your hands, wash and disinfect all tools which havebeen in contact with the cultures.
Utilisation Pedagogique de Bacteries Luminescentes (in French)
Bioluminescence in Plankton and Nekton (there is a list of luminescent organisms)
Flash! Bacterial illumination
Isolation of Pure Cultures Of Bacteria (Please, read the safety warnings present inthis website)
Bioluminescence Web sites
Internet Keyword: luminous bacteria luminescent bioluminescence luciferin luciferase.
To find companies which sell strains of microorganisms use the keywords: culturecollection.
Are the insects which fly around lamps at night attracted by light or heat? To find out,use a clothing iron and an electric lamp. The electric lamp produces light with a littleheat, the iron produces only heat. Put both on a table. Keep them at least a meter (abouta yard) apart and with the emitting surfaces turned away from you. Note the differentbehavior of insects. Mask the lamp with plastic sheets of different colors and verify ifbugs are more attracted to a particular color. This is also a method to capture nighttimeinsects, particularly moths, so you can observe them with a lens or a stereoscopicmicroscope.
Cerebral Runes: Hypothesis explaining Origin of Languages
The beauty of butterflies makes their culture particularly charming. Do not believe you will immediately have these beautiful insects, in fact for most of the time you will have to raise caterpillars and preserve pupae. Only at the end will you have butterflies. To culture these pretty insects, you first have to read texts about lepidoptera and practice in the field. In this way you will learn how to find butterfly eggs, to raise caterpillars and to keep pupae, waiting for the butterfly to emerge. Usually, butterflies prefer one or a few kinds of plants called hostplants. Caterpillars feed only on these plants and it is only on these that the adult female lays her eggs. So, in order to find the eggs of a given species of butterfly it is necessary to know which are its hostplants and when they lay eggs.
You should breed caterpillars in well ventilated cages. They have to be closed with mosquito net to avoid predators (figure 14). In fact, many bugs lay their eggs in the body of caterpillars. You have to feed your caterpillars with fresh leafy branches of the host plant. To do this you can pot these plants and insert them in the cage, or you can insert the cage over a branch without cutting it from the plant. If this is not possible, cover a branch of the plant with a cloth bag including the caterpillars. Cure the pupae according the suggestions in the books. When butterflies emerge from their cocoon, free them where you have collected the eggs. If you want to keep some adults to admire them, put them in cages like the one of the figure 14 and nourish them with mixtures of water and honey. Often, the caterpillars you find in nature are victim of bugs which lay their eggs on the caterpillar. In this case, there are little dark spots on the caterpillar skin. You can raise these caterpillars to study their parasites.
Butterfly Gardening and Conservation
The Richmond Birdwing Butterfly Conservation Project
Caterpillar Hostplants Database
Unsure About Butterfly Releases?
Internet keywords: butterfly breeding culture.