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Orthoptera: Difference between revisions
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Orthoptera are an order of insects. (Grasshoppers, crickets, and locusts are major example insects of Orthoptera.) Phylum of the Orthoptera is Arthropoda, because they can be distinguish to 3 parts: head, thorax, and | Orthoptera are an order of insects. (Grasshoppers, crickets, and locusts are major example insects of Orthoptera.) Phylum of the Orthoptera is Arthropoda, because they can be distinguish to 3 parts: head, thorax, and abdomen. Also, they are enclosed in outer covering skin. | ||
The Orthoptera produce sounds by rubbing their wings or legs. (Usually, male Orthoptera make sounds to attract females during breeding time. Most time, females are silent.) The female Orthoptera hatch eggs in the ground and in plants. The Orthoptera are dioecious species (“two houses” in Greek). To produce the eggs, both male and female are needed and they need to breed together. They are hemimetabolous species. In other words, they do not have pupa stage, but they look like small adult. [http://www.earthlife.net/insects/orthopta.html] | The Orthoptera produce sounds by rubbing their wings or legs. (Usually, male Orthoptera make sounds to attract females during breeding time. Most time, females are silent.) The female Orthoptera hatch eggs in the ground and in plants. The Orthoptera are dioecious species (“two houses” in Greek). To produce the eggs, both male and female are needed and they need to breed together. They are hemimetabolous species. In other words, they do not have pupa stage, but they look like small adult. [http://www.earthlife.net/insects/orthopta.html] | ||
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By sound, smell, touch, and sight, the male Orthoptera attract the female ones. Each of species uses different methods to attract the females. The grasshoppers dance by flying. The crickets and the katydids produce two different kinds of sounds. First one uses for long range. When the females come near by the males, the male crickets and katydids produce quieter sounds. Not only the sounds, but also the crickets and katydids use smell to attract the mates. The female giant wetas produce pheromones to attract the males. | By sound, smell, touch, and sight, the male Orthoptera attract the female ones. Each of species uses different methods to attract the females. The grasshoppers dance by flying. The crickets and the katydids produce two different kinds of sounds. First one uses for long range. When the females come near by the males, the male crickets and katydids produce quieter sounds. Not only the sounds, but also the crickets and katydids use smell to attract the mates. The female giant wetas produce pheromones to attract the males. | ||
The male Orthoptera insert sperm into female Orthoptera body directly. The sperm packet weights about 60% of the male’s body weight. The female crickets and katydids insert ovipositors into the ground or rotting wood to lay out the eggs. The female grasshoppers use valves on their abdomen instead of the ovipositors to lay out the eggs in the ground or the rotting wood. | |||
After a few weeks or months, larvae hatch. Some species guard their eggs, but some species do not. Mole crickets lay their eggs in a special chamber and protect the eggs to prevent from spoiling. The larvae look like the adult insects, but they have undeveloped wings and reproductive organs. They do not go through pupa stages, but they develop by molting six to ten times to become the adult insects. [http://animals.jrank.org/pages/2369/Grasshoppers-Crickets-Katydids-Orthoptera-BEHAVIOR-REPRODUCTION.html] | |||
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== Related References == | == Related References == | ||
* [http://www.earthlife.net/insects/orthopta.html Grasshoppers and Crickets (Orthoptera)] The Earth Life | * [http://www.earthlife.net/insects/orthopta.html Grasshoppers and Crickets (Orthoptera)] The Earth Life | ||
* [http://animals.jrank.org/pages/2369/Grasshoppers-Crickets-Katydids-Orthoptera-BEHAVIOR-REPRODUCTION.html Crickets Grasshoppers and Katydids: Orthoptera - Behavior And Reproduction] Animal Life Resource | |||
* [http://www.alertnet.org/thenews/newsdesk/IRIN/8cf2ca21d2d637760cbbc98f6e1e13d5.htm New locust swarms threaten crop harvests] Reuters AlertNet | * [http://www.alertnet.org/thenews/newsdesk/IRIN/8cf2ca21d2d637760cbbc98f6e1e13d5.htm New locust swarms threaten crop harvests] Reuters AlertNet | ||
* [http://www.biblegateway.com/passage/?search=exodus%2010:12-15&version=31 Exodus 10:12-15] Biblegateway | * [http://www.biblegateway.com/passage/?search=exodus%2010:12-15&version=31 Exodus 10:12-15] Biblegateway | ||
