How to silence a cricket.Among the things that come to mind when thinking about night are darkness, the moon, bedtime, and, in many places, chirping chirp n. A short, high-pitched sound, such as that made by a small bird or an insect. intr.v. chirped, chirp·ing, chirps To make a short, high-pitched sound. crickets. The list may soon get shorter in the lowlands on the Hawaiian island of Kauai, where flies have targeted a type of cricket that originally came to Hawaii from the western Pacific. Only male crickets chirp. They have special parts on their wings that, when scraped against each other, make a noise. In the 1990s, a certain type of fly began hunting Polynesian field crickets found on Kauai, says Marlene Zuk of the University of California, Riverside The University of California, Riverside, commonly known as UCR or UC Riverside, is a public research university and one of ten campuses of the University of California system. . These flies implant their babies in the bodies of crickets. The larvae Larvae, in Roman religion Larvae: see lemures. use the crickets as food, and the crickets eventually die. Because male crickets make so much noise, they're easy to locate and suffer the most. So, within 5 years, the Years, The the seven decades of Eleanor Pargiter’s life. [Br. Lit.: Benét, 1109] See : Time male crickets stopped chirping almost entirely, Zuk says. By 2003, the cricket population had started increasing again, she reports, but only a few of the males had wings with chirping parts that still worked. "What surprises me most is that the cricket song went away so fast," says Ron Hoy Hoy, island, 13 mi (21 km) long and 6 mi (9.7 km) wide, off N Scotland, second largest of the Orkney Islands. It is located at the southwestern side of the Scapa Flow anchorage. of Cornell University Cornell University, mainly at Ithaca, N.Y.; with land-grant, state, and private support; coeducational; chartered 1865, opened 1868. It was named for Ezra Cornell, who donated $500,000 and a tract of land. With the help of state senator Andrew D. , who also studies flies and crickets. The change is an example of natural selection, which is part of the process of evolution. In this case, chirping was a bad quality for a cricket to have on Kauai, and cricket numbers were dropping. A gene or two happened to change, or mutate mu·tate intr. & tr.v. mu·tat·ed, mu·tat·ing, mu·tates To undergo or cause to undergo mutation. [Latin m , so that the cricket wing couldn't chirp anymore. In some places, this change would have doomed the mutated crickets. But on Kauai, faced with deadly flies that could zero in on the sound, the mutated crickets thrived and passed the changes on to their young. Now, these silent crickets are the main type of cricket on the island. Unfortunately for male crickets, their only way of attracting females is by chirping. For now, the silent males cluster around the few remaining chirpers in order to meet female crickets. http://www.sciencenewsforkids.org/articles/20060927/Note2.asp From Science News for Kids Sept. 27, 2006. Copyright (c) 2006 Science Service. All rights reserved. |
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