Sugar And Elegans Lab Report

An experiment was conducted to study and explore the circulatory system by exposing Lumbriculus variegatus, black worms, to household drugs. Lumbriculus variegatus was chosen as the experimental organism because of their transparent bodies and their simple physiology.

A short term effect on an earthworm would be that it would have lots of food for a short amount of time due to

Tapeworms are flat segmented worms that have a head, neck, and segments called proglottids; the scientific name is Cestoda the flatworm. Animals become infected with these tapeworms from grazing in pastures that have tapeworms in the grass and from drinking water that is contaminated with the tapeworms. When Humans eat the meat from these animals raw or not cooked all of the way they become infected with the tapeworms. Humans can also become infected by drinking contaminated water. Generally the symptoms of being infected with these tapeworms in humans is so mild that they are not recognized and can easily be treated, although in some cases it can become very dangerous.

But, these small intermediate hosts can be eaten by larger predators such as; trout, perch, and pike. By this happening the sparganum can go to the musculature of the larger predator, which can be fish and mammals. Then the human can catch the diphyllobothariasis disease by eating the infected host fish raw or undercooked. After ingestion of the infected fish, the plerocercoids develop into immature adults and then into mature adult. The adult worms can reach more than 10 meters long. Several of tapeworms regularly detach from the main body of the worm (that’s where they get their name tapeworm from).They then release immature eggs in fresh water to start the cycle all over again. A tapeworm can live up to 20

In part 2 of the experiment we are inducing RNAi through the process of feeding. To do so, a black pen is used to label the bottom of an OP50 seeded plate with the date and “wild type”. Another OP50 seeded plate is labeled with the date and “dpy-13”. A black pen is then used to label the bottom of the plate seeded with dpy-13 RNAi feeding strain with the date and “wild type”. Five L4-stage worms from the plate of wild type worms are then picked and moved to the OP50 seeded plate labeled “wild type”. Any eggs or young larvae that may have been accidentally transferred are to be picked off of the plate and then flamed in a Bunsen burner. The same method is used to move five L4 wild type worms to the plate seeded with the dpy-13 RNAi feeding strain, and once again to move five L4 dpy-13 worms to the OP50 seeded plate labeled “dpy-13”. These plates are then incubated upside down at 20˚C.

"I don't think that the dead larvae in the blood samples were due to maturation. What if the larvae actually feed on the brain’s iron, purposely depleting it in order to create the restless leg syndrome? This would give the flatworm's host the ability of motion. At this point, it would just have to compel the individual to attack and bite."

This assignment was the measurement of dissected worms over a course of two weeks. In class we were given a tiny worm in a petri dish and it was given nothing but a pipette of water to survive in. I named my small worm Loretta Lynn, and then cut her into three somewhat parts (just eye-balling it) using a razor blade. Each segment of Loretta was now separated and swimming independently from the body they were once a part of. I hypothesized that the three parts would grow rapidly and very noticeably larger over the course of 14 days, I was underwhelmed however by the results. Loretta’s “head” was first measured at 2mm long and after one week the “head” measured at 5mm and then to 1cm by the end of week two. Her “middle” part was of similar results

A tape worm by definition is a parasitic flatworm which lives in the intestine of humans and other animals and feeds off the food the host eats before your body can use it for energy or nutrition. Tape worms had been around for a long time sometimes infecting the host by laying eggs on their food source and then inside the body the egg hatches and grows inside by feeding off the host food. However tape became very popular during the early 1900 when people began to take tape worms as a fad diet. People mostly women would digest the tape worms and the worm would do the rest to remain alive by feeding on the nutrients of the host. This diet fad became really popular but it was also very dangerous as it would often if not extracted lead to death like stated by a blog posted by Mizpah Matus B.Hlth.Sc(Hons) “ingesting tapeworms in order to lose weight is not only a radical fad diet method but also an extremely dangerous one.”

In the experiments the scientists for each stage of devolvement tracked the spreading through different parts of the body. In the first experiment one of the items that the scientists were looking for was maximum fall (the lowest fall in PD and AMP). For the airway responsiveness the placebo group did not show much difference than the hookworm group. Although looking at the

Tapeworms are rare in the United States nowadays. Since they are passed on by undercooked beef, pork, and fish, there are protocols to be followed so people can be assured their food is safe. Most cases of tapeworms stem from people who have left the country. These parasite’s anatomy is very useful for their environment. The skin will absorb food rather than ingesting it, and the body is perfect for latching onto the intestine walls. The head is slightly knob-like and is rimmed with tiny hooks. Most species need a mate to reproduce, but in some species of tapeworms, internal fertilization is possible. After storing the eggs, the outer layer of the body will shed, allowing the eggs to leave the host or hatch and return to the intestine. Tapeworms will live in the

Human tapeworm infestations are most common in regions where there is contaminated soil and water and where meat and fish are eaten raw or lightly cooked. In the United States the beef tapeworm is most common. The usual intermediate host is a cow, which ingests the proglottid while drinking or grazing. The embryo is equipped with sharp hooks, hatch and bore through the cow's intestinal wall into the bloodstream, where they are carried to the muscles. Each embryo encloses itself in a cyst, or bladder; at this stage it is called a bladder worm. During the bladder worm stage the embryo develops into a miniature scolex; it remains inside until the muscle is eaten by a primary host, in this case a human. If the scolex has not been killed by sufficient cooking of the meat, it sheds its covering and attaches to the intestinal wall, where it begins producing proglottids. An adult tapeworm consists of a knoblike head, or scolex, equipped with hooks for attaching to the intestinal wall of the host, a neck region, and a series of flat, rectangular body segments generated by the neck. proglottids break off and enter in the feces of the host, but new ones are constantly formed at the anterior end of the worm. As long as the scolex and neck are intact the worm is alive and capable of growth. A nervous system

It should also be noted worms can be present with out any signa at all

The Sheep tapeworm are flat with multiple segments with a range length of about 4 to 5 meters when fully grown. They have a bilateral symmetry and being ectothermic along with heterothermic. The small necks of the tapeworm produce “immature proglottids.” (Smith A. 2012)

The worm’s life cycle starts off with eggs of the worm are laid in human feces, the larvae hatch in 1 to 2 days, then rhabditiform larva comes out of the egg, the rhabditiform will molt twice in 10 days to form the filariform larva, it will then enter another body of a living being through its skin in their foot, it will travel up to the lungs through the circulatory system, the worm will travel to the intestine, in the intestines it molts into an adult worm, then it will attach to the inner walls, mating occurs if another worm is present, and the eggs will pass through the body in feces again.

Tenebrio molitor is the scientific name for the commonly found beetle also known as the yellow mealworm. (Ozanimals.com, 2017) As shown in figure 1, the mealworm is more common and well known in its larvae form, rather than in its beetle form. (Ozanimals.com, 2017) At first glance the larvae resembles a close appearance to an earthworm, but actually has no relation to the commonly found animal. The mealworm is actually considered a pest in some communities, due to the insect being drawn to stored foods, having an incredible ability to eat a range of different food items. (Ozanimals.com, 2017) Its main source of nutrition is found in grain products such as cereals, flour, pasta and bran. It is ideally found in dark moist locations, as it is somewhat nocturnal. (Ozanimals.com, 2017) The pest’s larvae’s rich digestive system is quite special though, as it can break down plastic material. Where some may believe, the beetle is a pest, it has great potential in reducing one of the world most deadly issues, Pollution.