A fly is an insect and lives in many common area of human community. This insect feeds on human foodstuffs and wastes where they can pick up and transport various disease agents. There are two potential cues that trigger aggregation in the common house fly. The first of these is visual attraction; that is, particular wavelengths of light, or colours, or shape patterns that the flies sense optically and find attractive. The second type of cue is olfactory; chemical attractants that stimulate the flies to move towards them. The fly picks up disease-causing organisms while crawling and feeding. Flies create some of the public health insect problem in human society. Flies create some major diseases such as sleeping sickness, leishmaniasis and typhoid fever in the United States of America (Buchanan and Dura, 2005). Flies go through a complete metamorphosis. Metamorphous is the transformation of an insect from an immature form of larva to an adult from in distinct stage. There are four major stage in flies lifecycle which is eggs, larva, pupa and adult fly (refer to Figure 1 in appendix 1). The first stage is the egg. This stage is where the adult female fly will lay eggs. Adult female flies will fly and lay eggs wherever a suitable place to breed with their cognition. Adult Females produce hundreds of small eggs and are usually included in most organic material such as compost and trash. Fly lay eggs individually and usually will be in a small group . The number of eggs produced is dependent on the size of the female flies. A female fly can lay up to 500 eggs in several groups and each group has a 75-150 eggs. The maturity of the eggs are in the next three to four days. Egg white flies flying egg is about 1.2 mm long. Normally, the e... ... middle of paper ... ... especially sugar. Access to animal manure does not lengthen adult life and they live longer at cooler temperatures. Adult Fly require food before they will copulate, and copulation is completed in as few as two minutes or as long as 15 minutes. Oviposition commences four to 20 days after copulation. Female flies need access to suitable food (protein) to allow them to produce eggs, and manure alone is not adequate. Due to this, the adult fly continues their lifecycle from beginning to ultimate of its life span. Works Cited Buchanan, B. G., & Duda, R. O. (2005). General housefly diseases. Biological control possibility for housefly, 3(5), 80-87. Celes, W., Ierusalimschy, R., & Figueiredo, L. H. (2003). Common housefly nowadays. Pest controls and management, 1(2), 111-119. Noran, O. S. (2008). The Evolution fly. Behavioural adaption of housefly, 2(4), 100- 105.
The role of questions in Dunn’s article is to persuade the reader into thinking their own role or responsibility in the behavior of flies. The first question he poses is; “Just where do houseflies pick-up these other bacteria, the one they give back to us in vomit spot, feces and footsteps?” This question is central to his main idea. He poses a second question about the discovery made by his friend named Coby, on pig farms, asking; But why would the flies in pig farms tend to have antibiotic resistant bacteria? Yet again dragging the attention to the issue at hand that is that us humans are largely to blame for the dangers that flies poses to our
In science, these fruit flies can be used to study genes and mutations relatively quickly because of the limited life span. Knowing mating behaviors can help scientists better understand their results and improve their experiment designs to reduce
Sexual reproduction in the Venus flytrap is no different than the other plants. Venus flytraps can be self-pollinated, meaning that you can fertilize the pistil with pollen from its own anthers. A few days after fertilization, the flowers will wither and die. The seed matures in 4-6 weeks after pollination occurred. “As the seed has matured, the tiny ovary turns jet black; about 1.5mm in length”. If the pollination attempt was unsuccessful, there will only be dead plant material.
Forensic entomology is most commonly used in suspicious criminal cases. P.C. White (2010) suggests that insects are responsive to certain stimuli and from this we are able to capture an insight into an insects contribution to crime solving. We can determine many different aspects of a case by the presence of different insects colonising a dead body, blowflies for example, are the first to approach the body when its fresh. This is due to their preference of food sources. Ultimately, I will explicitly focus on the relevance of a blowfly at a crime scene.
One key distinction is the sex combs on the male’s foreleg, which is characteristic that is lacking in the females. Another way to distinguish the sex of the flies is to carefully examine the tip of the abdomen in each. The females tend to have a lighter colored abdomen that is more pointy and long. On the other hand, males tend to have darker pigmented abdomen that is round and short. In general, females tend to have a larger body than males. Sex determination can easily be accomplished even under a low power magnification, which adds to the ease of using fruit flies to study genetic
However, evidence such as fossils is more than enough to lend support and disprove any other theory to the development of species. Examples used by Root-Bernstein and McEachron also provide strong support to evolution. The authors detail how natural selection works in both insects and germs to create organisms better adapted to methods of control. Disease used to run rampant, until the creation of vaccines which led to many diseases becoming extinct. Root-Bernstein and McEachron note that the diseases that have survived to this day have been constantly mutating and evolving to become more resistant to any attempts at suppression. The same can be said for insects that have been consistently exposed to pesticides. The ones that survived the pesticides were able to reproduce and pass along a resistance to their offspring which in turn makes the species more resilient and better suited to their
Kopec, Stefan. "Studies on the necessity of the brain for the inception of insect metamorphosis." The Biological Bulletin, 42. 6 (1922): 323--342. Print.
Flies are about at all times and it is hard to concentrate. Also, some of
The objective of this experiment is to determine what genes are responsible for the white-eye color in two strains of Drosophila melanogaster, known as the common fruit fly. Drosophila is used as the experimental organism for many reasons which include its small size, easy maintenance, short 10 day generation time, and a fully sequenced genome. The characteristics of the wild type, which is the most common phenotype found in nature, include brick red eyes, long wings, gray/tan body, and smooth bristles. Of course, there are mutations that occur that cause specific traits to deviate from the wild-type phenotype. These traits include wing length, bristle shape, body color, and eye color.
They are very popular because they have a relatively short life cycle, which lasts about 9 days. This makes it easy to observe multiple generations in a short period of time. The fly’s life cycle consists of egg, larvae, pupa, and adult stages. At each of these stages of development, Drosophila exhibits different phonotypical identities and mutations. The flies that were crossed contained a genetic mutation called apterous. Apterous can be observed by looking for flied that are missing wings. Flies with apterous will not have any wings. If this mutation is sex linked, it is expected that the male population will only be wingless in the F2 generation. If the mutational is autosomal, it is expected that the mutation to normal fly ratio is
Forensic entomology is the study of insects and arthropods and their relation to a criminal investigation. Forensic entomology can determine the postmortem interval (PMI) or how long since the descendants’ death, whether the body has been moved since expiring, and what injuries may have been sustained (Ryan, 2011). When decomposition begins, insects establish a colony to lay eggs on the remains; these eggs will hatch into larvae that will eat the human organs and tissues. Forensic entomologists can determine the specific insects present in the body and estimate how long a body has been left exposed by examining the stage of development of the fly larvae; however, these findings are not always plausible. The fly larvae look and act different at each stage of development. The time required for stage development is not only affected by environmental influences such as geographical location, climate, and weather conditions, but also by type of insect. The forensic entomologist must consider these conditions when estimating the postmortem interval. Knowledge of insects, their life cycles, and their habits make entomological evidence a priceless tool for an investigation. Forensic entomology has proved its significance in a number of cases; though circumstances such as weather, temperature, and time of year clearly affect the development of insect infestation, and the expert must keep these in the forefront of his/her mind (Innes, 2000).
When the colony becomes well established, the queen begins to lay some eggs that develop into queens and males. It takes a few years before a colony becomes large enough to send out winged males and young queens to start new colonies. The cycle will now begin all over again. Nests come in all shapes and sizes. One tropical species built a nest that extended forty feet below the surface of the ground.
Insects are some of the most important creatures in our world. They play a very large role in many tasks that are vital to human surviva,l like pollinating and effective decomposing. Insects have impacted science, environment, human development, and food supply in a variety of ways. Insect pollination is one of the primary beneficial functions of insects on human development.
These enemies, also known as biological control agents, include predators, parasitoids and pathogens. Parasitoids are parasites whose larvae develop inside another organism’s body, and an example of a parasitoid is a wasp. A pathogen or infectious agent is a biological agent that causes disease or illness to its victim and it disrupts the normal physiology of the insect pest, an example of a pathogen is bacteria. Predators consume a large number insect pest species over their lifetime.
Seventh, in some groups of insects, truly social behavior has evolved. Social behavior will allow a large population to survive through difficult periods via cooperation in food gathering, food storage, temperature control, and colony