The Cicada Many Things to Many People
In this century of rapid scientific discovery, there still exist natural phenomena with the power to inspire wonder and mystery. The cicada, an insect known since ancient times, is one such phenomenon. Because scientific knowledge of the cicada contains many gaps, these mysterious insects can still stimulate our imagination or lead us into confusion. At the present time, the cicada is many things to many people: it is a curiosity that should be approached scientifically; it is a source of superstition and dread; it is also little more than an annoying, seasonal inconvenience.
The cicada is a stout, black insect about an inch in length. Various species of this insect can be found all over North of the America. When the cicada is at rest, its large, transparent, veined wings are folded over the top of its body and extend about a quarter of an inch beyond it. Cicada wing veins are and information reddish orange in color, as are its eyes and legs. The front legs are sharp and crablike, allowing the animal to hold tight to the bark of trees. The species of American cicada most written about by scientists and most wondered about by the general public is known as the periodical cicada. Its scientific name is Magicicada septendecim. This species of cicada appears above ground only once every seventeen years.
What the cicada does underground for most of its seventeen-year life span was a mystery until fairly recently. In the early part of this century, a man named C.L. Marlett, who worked for the United States Department of Agriculture, decided to find out. He began burying cicada eggs in his backyard and digging them up periodically for observation. He soon found out that the cicada begins life as a tiny nymph about six hundredths of an inch in length. A nymph is an immature insect, before it has fully developed
wings or reproductive organs.
During their sixteen years and ten and one-half months underground, cicada nymphs are nestled against tree roots from which they gently suck the juices. Nourished by this root sap, they begin to grow. They shed their skin four times before they reach adult size.
Once matured, a cicada does not necessarily leave its underground nursery. All cicadas of the same generation in a region wait for a seventeenth spring before they come creeping forth from the ground as a group.
Madagascar hissing cockroaches (Gromphadorhina portentosa) were the ectotherms used to compare standard metabolic rates and mass specific metabolic rates between organisms. To calculate metabolic rates for these individuals a system comprised of many parts was needed. A gas pump was needed to deliver airflow into the system. This gas pump was connected to a flow meter that could detect the flow rate of the gas passing through. The air would then flow into a Ascarite Column that would scrub out the CO2 from the system before the animal chamber was reached so that no CO2 that was not emitted by the animal would be collected. Then the Madagascar hissing cockroach would be in the animal chamber connected to the Ascarite Column and it would
Fox, R. 2001. Invertebrate Anatomy OnLine: Artemia Franciscana. Lander University. http://webs.lander.edu/rsfox/invertebrates/artemia.html, retrieved February 13, 2011.
ImageText BoxImageOne of the biggest threats to the environment of Ontario is the Gypsy Moth (Lymantria dispar dispar). The species itself is native to Europe and Asia. How this affects us is by weakening trees across Ontario and North America. The first time the gypsy moth was found in Ontario was 1969. The gypsy moth can be found in southern Canada (Ontario), New Brunswick, Nova Scotia and British Columbia. It is known to weaken trees and the caterpillar form live in trees and during most outbreaks its caterpillar feces would fall from the trees to the ground or even on top of humans. The average Gypsy Caterpillar can grow 5-6 centimeters long. With five pairs of blue spots and six pairs of bright red dots on their back. The female moth are white and can fly on the other hand, the male moth are brown and can also fly. The female have a 5cm wing span but male have a 2.5cm wing span. The gypsy moth usually lives in open forests and other forests and take up at least 20% of the space. The Gypsy moth are about 4cm long, tan coloured and can be located on tree trunks, furniture, and buildings. (OFAH Invading Species Awareness Program, 2012)
The issue of whether or not America should have a National Bank is one that is debated throughout the whole beginning stages of the modern United States governmental system. In the 1830-1840’s two major differences in opinion over the National Bank can be seen by the Jacksonian Democrats and the Whig parties. The Jacksonian Democrats did not want a National Bank for many reasons. One main reason was the distrust in banks instilled in Andrew Jackson because his land was taken away. Another reason is that the creation of a National Bank would make it more powerful than...
11) Wargo, Phillip M., Defoliation by the Gypsy Moth: How it Hurts Your Tree, U.S.
Smith, Henry Nash. "A Sound Heart and a Deformed Conscience." A Norton Critical Edition, Adventures of Huckleberry Finn, An Authoritative Text Backgrounds and Sources Criticism. Ed. and Trans. Sculley Bradley, Richmond Croom Beaty, E. Hudson Long, and Thomas Cooley. New York: Norton, 1977. 365-385.
...l, Ted E., and Bruce W. Wood. "Movement of adult pecan weevils Curculio caryae within pecan orchards." Agricultural & Forest Entomology 10, no. 4 (November 2008): 363-373. Academic Search Complete, EBSCOhost (accessed April 18, 2012).
Mark Twain’s Adventures of Huckleberry Finn is considered the great American Novel with its unorthodox writing style and controversial topics. In the selected passage, Huck struggles with his self-sense of morality. This paper will analyze a passage from Adventures of huckleberry Finn and will touch on the basic function of the passage, the connection between the passage from the rest of the book, and the interaction between form and content.
...re the now grown wasps simply fly away from the dead host caterpillar that acted as their apartment through their developmental stages. The wasps are endemic to Europe and several tropic zones throughout the world.
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).
Mark Twain’s The Adventure of Huckleberry Finn is one of the most classic American Literature Book. It consists of historical backgrounds, universality, and timelessness. But one of the most outstanding chapters of the book is chapter 27 and 28.In the two chapters, Twain’s use of the literary device – Characterization builds the character of Huckleberry Finn and show the different aspects of his character.
A novel structured on the theme of morality, the Adventures of Huckleberry Finn by Mark Twain focuses on Huck Finn’s multifaceted growing up process. Huck, through his escapades and misfortunes is obliged to endure the agonizing process from childhood to adulthood where he attains self-knowledge and discovers his own identity. Throughout the journey down the Mississippi River, Jim, Ms. Watson’s runaway slave, accompanies Huck, and is later joined by two con men. It is during this journey that a great moral crisis in Huck’s life occurs where he must make a painful decision as to whether he is going to give Jim up to the slave hunters or notify Ms. Watson about Jim’s whereabouts and assist him to remain a free man. This is the turning point in his character where through deep introspection, he learned to think and reason morally for himself. He comes to his own conclusions, unaffected by the accepted, and often hypocritical, perceptions of Southern culture. Huck also deciphers the truth in the face of lies held by the antagonistic society with its evil nature.
Arachnida is a subphylum of Arthropoda, consisting of over 100 000 species, many of them being parasites which can carry disease. They are found in all environments, and mostly have eight legs, which is a feature, together with the fact that they do not have wings or antennae, often used to distinguish them from the other subphyla, though there are exceptions. They include spiders, scorpions, ticks and mites. Their bodies are divided up into three parts: the cephalothorax, the opisthosoma and the thorax, and use a type of lung for gas exchange. Most Arachnids are carnivorous, and eat pre-digested insects and other small animals. They reproduce using internal reproduction usually lay eggs, except for the scorpion which bears living young. The word ‘Arachnid’ comes from the Greek word ‘Arachne’ meaning ‘spider’.
The main reason for studying forensic entomology is to establish the time since death. Recognizing each species and their life stages as well as having knowledge about how long an insect is in a particular life stage is the basis for establishing a PMI. The use of forensic entomology is a growing area of research, which will become more prevalent as more research on the subject is completed. This is important in criminal cases in providing a time range for when the crime occurred so that it is possible to narrow the possibility of each suspect or to acquit the defendant.
...ced in sales and therefore continued to earn rewards while those who did poorly were reprimanded and punished with further shortened schedules. The low morale reflected upon customers as they were angry with being forced to purchase worthless items and saw some of their favorite employees being maltreated and even fired. The greed of this company ran deep and its downward spiral is only just beginning to stop with the transition of ownership.