10 Fascinating Facts About Stick Insects

Stick insects are part of the order Phasmatodea (also known as phasmids and walking sticks) and are most often found in subtropical tropical habitats—when you can find them, that is. These amazing bugs are hard to spot because they look so much like twigs—until those twigs get up and walk away, that is. 1. Stick Insects Can Regenerate Limbs Should a bird or other predator grab hold of its leg, a stick insect  can still make an easy escape. Using a special muscle to break it off at a weak joint, the imperiled insect simply sheds the leg in a defensive strategy is known as autotomy. Juvenile stick insects regenerate the missing limb the next time they molt. In some cases, adult stick insects can even force themselves to molt in order to regain a lost leg. 2. Stick Insects Can Reproduce Without Males Stick insects are a nation of Amazonians, able to reproduce almost entirely without males, using a process known as parthenogenesis. Unmated females produce eggs that when mature, become female stick insects. When a male does manage to mate with a female, theres only a 50/50 chance that the offspring of that union will be male. A captive female stick insect can produce hundreds of all-female offspring without ever mating. In fact, there are species of stick insects for which scientists have never found any males. 3. Stick Insects Even Act Like Sticks Stick insects are so named for their effective camouflage among the woody plants where they feed. Theyre typically brown, black, or green, with thin, stick-shaped bodies that help them blend in as they perch on twigs and branches. Some stick insects exhibit lichen-like markings to make their camouflage more authentic but to make the disguise complete, stick insects imitate twigs swaying in the wind by rocking back and forth as they move. 4. Their Eggs Resemble Seeds Stick insect mothers arent the most maternal. While some stick insects females actually make an effort to hide their eggs—sticking them to leaves or bark or placing them in the soil—they typically drop eggs randomly on the forest floor, leaving the youngsters to whatever fate befalls them. Dont be so quick to judge mama stick insect, though. By spreading her eggs out, she lessens the chance of predators finding and eating all of her offspring at once. Its also helpful that the  eggs resemble seeds, so carnivorous predators are less likely to take a closer look. 5. Nymphs Eat Their Molted Skin After a nymph has molted, its vulnerable to predators until its new cuticle darkens and hardens. The castoff skin nearby is a dead giveaway to enemies so the nymph quickly consumes the shriveled exoskeleton to get rid of the evidence, simultaneously recycling the protein it took to create the discarded layer at the same time. 6. Stick Insects Arent Defenseless Stick insects arent venomous but if threatened, one will use whatever means necessary to thwart its attacker. Some will regurgitate a nasty substance to put a bad taste in a hungry predators mouth. Others reflex bleed, oozing a foul-smelling hemolymph from joints in their body. Some of the large, tropical stick insects may use their leg spines, which help them climb, to inflict some pain on an enemy. Stick insects may even direct a chemical spray, much like tear gas, at the offender. 7. Their Eggs May Attract Ants Stick insect eggs that resemble hard seeds have a special, fatty capsule called a capitulum at one end. Ants enjoy the nutritional boost provided by the capitulum and carry the stick insect eggs back to their nests for a meal. After the ants feed on the fats and nutrients, they toss the eggs onto their garbage heap, where the eggs continue to incubate, safe from predators. As the nymphs hatch, they make their way out of the ant nest. 8. Not All Stick Insects Stay Brown Some stick insects can change color, like a chameleon, depending on the background where theyre at rest. Stick insects may also wear bright colors on their wings but keep these flamboyant features tucked away. When a bird or other predator approaches, the stick insect flashes its vibrant wings, then hides them again, leaving the predator confused and unable to relocate its target. 9. Stick Insects Can Play Dead When all else fails, play dead, right? A threatened stick insect will abruptly drop from wherever its perched, fall to the ground, and stay very still. This behavior, called thanatosis, can successfully discourage predators. A bird or mouse may be unable to find the immobile insect on the ground or prefer living prey and move on. 10. Stick Insects Are the Worlds Longest In 2008, a newly discovered stick insect species from Borneo broke the record for longest insect (which had previously been held by another stick insect, Pharnacia serratipes). The Chans Megastick, Phobaeticus chani, measures an incredible 22 inches with legs extended, with a body length of 14 inches. Sources Marshall, Stephen A. Insects: Their Natural History and Diversity. Firefly Books, 2006.Gullan, P.J., and Cranston, P.S. . The Insects: An Outline of Entomology. Wiley-Blackwell, 2010.

Worldwide Telecommunications - 1024 Words

ANNOTATED BIBLIOGRAPHY: WORLDWIDE TELECOMMUNICATIONS Annotated Bibliography for Cultural Changes Inside Worldwide Telecommunications Pawny Abbasy, Jason Blanchard, Angela Zelandi University of Phoenix Essentials of College Writing Instructor: David Soyka Carte, Penny and Fox, Chris, (2004), Bridging the Culture Gap: A Practical Guide to International Business Communication, Library of Congress Cataloging-in-Publication Data, Retrieved November 17, 2006 from: http://www.amazon.com/gp/reader/0749441704/ref=sib_dp_top_toc/002-9731822-8892040?%5Fencoding=UTF8p=S009#reader-page Carte and Fox bring about many issues that come to surface while working with people of all different races and backgrounds. Although teaching you to†¦show more content†¦The companies want to use the same pay structure across borders regardless of local practices. A new study that was done by Mercer Human Resource Consulting shows that between the U.S.-based multinational companies, 63% use the same long-term incentive vehicles. In addition, 59% of them use the same grant values across all worldwide locations. Multinational based companies in Canada and Europe are even more likely to apply the same vehicles and values across all geographies. Heffernan, Margaret, (2006), The Sound of Three Hands Clapping, Mansueto Ventures LLC, Retrieved November 16, 2006 from: http://www.fastcompany.com/resources /talent/heffernan/071305.html Heffernan discussed the new challenges faced by businesses when a multicultural environment is introduced. She emphasizes the fact that the traditional classroom teachings just doesn t cut it, it takes experience. A company with trained and experienced leadership can operate beyond the barriers that may develop within a multicultural environment. 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Project C Free Essays

Your manager has speculated the following: a. the average (mean) annual income was less than $50,000, b. the true population proportion of customers who live in an urban area exceeds 40%, c. We will write a custom essay sample on Project C or any similar topic only for you Order Now the average (mean) number of years lived in the current home is less than 13 years, d. the average (mean) credit balance for suburban customers is more than $4300. 1. Using the sample data, perform the hypothesis test for each of the above situations in order to see if there is evidence to support your manager’s belief in each case a. -d. In each case use the Seven Elements of a Test of Hypothesis, in Section 6. of your text book with ? = . 05, and explain your conclusion in simple terms. Also be sure to compute the p-value and interpret. 2. Follow this up with computing 95% confidence intervals for each of the variables described in a. -d. , and again interpreting these intervals. 3. Write a report to your manager about the results, distilling down the results in a way that would be understandable to someone who does not know statistics. Clear explanations and interpretations are critical. 4. All DeVry University policies are in effect, including the plagiarism policy. 5. Pr oject Part B report is due by the end of Week 6. . Project Part B is worth 100 total points. See grading rubric below Submission: The report from part 3 + all of the relevant work done in the hypothesis testing (including Minitab) in 1. , and the confidence intervals (Minitab) in 2 as an appendix. Format for report: A. Summary Report (about 1 paragraph on each of the speculations a. -d. ) B. Appendix with all of the steps in hypothesis testing (the format of the Seven Elements of a Test of Hypothesis, in Section 6. 2 of your text book) for each speculation a. -d. as well as the confidence intervals, and including all Minitab output How to cite Project C, Essay examples