Lakes create the ideal environment for bacteria, parasites, and other pathogens to breed and thrive. However, what scientists and researchers do know is arguably just as frightening. Claiming the lives of almost everyone it infects, this is no friendly blob.
Collecting from flight, only adult insects, use a butterfly net, use a light trap Collecting from flowers, shake flowers over an umbrella, also some small insects inside flower buds Collecting from foliage, hold an umbrella under foliage and beat the foliage to dislodge the insects, collect eggs Collecting from fruit, keep fruit in a container to allow adult insects to emerge Collecting from fungus Collecting from galls Collecting from leaf litter Collecting from leaves, larvae of leaf miners leave snake-like markings on the leaves, pick leaf and keep fresh for adult to appear Collecting from roots Collecting from stones and rocks Collecting from water, aquatic insects Collecting from wood, dead wood.
Air net To make an insect air net, use a broomstick, heavy wire and mosquito netting. Bend a heavy piece of wire into a circle 45 cm in diameter, and twist the ends together to form a straight section 15 cm in length. Fasten this to the end of a broom handle with a wire. Cut a piece of mosquito netting to form a net 75 cm deep and fasten to the circular wire frame with stitches.
Use safety glasses and thick gloves when handling heavy pieces of wire. Sweep net Make a sweep net with muslin and very heavy wire that will not bend when the net is swept through grass. Sweep by working back and forth over a measured area. Count the net contents to estimate the number of insects between the soil surface and the grass tops.
To find the relative numbers of insects, sample the school grounds, a farm field, an abandoned field, forest floor or other natural areas.
Before the sweeping of vegetation, make small cages for crickets or grasshoppers with metal insect netting. Use safety glasses and thick gloves when handling metal netting. Put grass, water and a small dish of moist sand in each cage.
Females may lay eggs in the sand. Put a cotton wad in the bottom of the container and cover it with a round piece of cardboard or absorbent paper that has several holes punched through it. When the container is used, saturate the cotton wad with an insecticide.
Put the piece of cardboard over the cotton wad and then put the insect in the jar. Close the container tightly and leave until the insect is dead. Use a large container if collecting moths or butterflies to avoid damaging the wings.
Insect stretching board setting board Use an insect stretching board to prepare insects for mounting. Make the stretching board from flat cork sheets or soft wood split into two equal parts with a space 1 cm wide between them. Fit the cork sheets into a flat cardboard or wooden box. Put the body of the insect in the space and pin the wings on the top with strips of paper held by pins pushed into the cork, but not through the wings.Dracunculiasis (commonly known as guinea-worm disease) is a crippling parasitic disease caused by Dracunculus medinensis - a long, thread-like worm.
It is transmitted exclusively when people drink stagnant water contaminated with . A third-stage (infective) larva of Dracunculus medinensis, the causative agent of Guinea worm disease, was recovered from a wild-caught Phrynobatrachus francisci frog in Chad.
Although green frogs (Lithobates clamitans) have been experimentally infected with D. medinensis worms, our findings prove that frogs can serve as natural paratenic hosts. *Guinea worm disease facts by John P. Cunha, DO, FACOEP Dracunculiasis, more commonly known as Guinea worm disease (GWD), is a preventable infection caused by the parasite Dracunculus medinensis.
In , only four countries reported cases of GWD: Chad, Ethiopia, Mali, and South Sudan. Classification of protozoa The following is a simple classification of protozoa.
The more modern classification is shown beneath numbers 1 to 4. Guinea-worm disease is caused by the parasitic worm Dracunculus medinensis or "Guinea-worm".
This worm is the largest of the tissue parasite affecting humans. The adult female, which carries about 3 million embryos, can measure to mm in length and 2 mm in diameter.
Global Zoonoses a lists zoonotic bacterial, viral, fungal, and parasitic diseases, grouped by category. Many proven zoonoses, including some diseases that are rare in people, organisms that are maintained primarily in people, some primate diseases, and diseases .