CHAPTER ONE
1.0 INTRODUCTION
Grasshoppers and locusts include insects in different families belonging to the super family Acridoidea and the orderOrthoptera Grasshoppers and locusts are distinguishable from other orthopterans primarily on the basis of theirexternal morphology. The most obvious and distinctive features of grasshoppers and locusts are their enlarged hindlegs and their relatively short and thick antennae. There are more than 350 grasshopper and locust species recordedfrom the Sahel (Mestre, 1988), of which about 30 are considered to be of regular or irregular pest status (Popov,1988). Grasshoppers and locusts occur in a wide variety of habitats, from low-elevation, hot, dry deserts to high elevation, moist environment. Most species occur in arid and semi-arid environment, and it is in the warm semi-aridand arid desert grasslands that grasshopper and locust species diversity and population densities are the greatestThey are relatively large, active insects and require structurally open habitats where they are free to move, andwhere sunlight levels are high enough to enable them to maintain high metabolic rates. Habitat specificity variesconsiderably among species of grasshoppers and locusts. Some species such as SchistocercagregariaForskål andOedaleussenegalensis Krauss (Orthoptera: Acrididae) are typically common in desert environments but can be foundin a wide variety of habitats over wide geographic and altitude ranges when outbreaks occur. Other species are muchmore restricted or specific to particular types of habitats .Grasshoppers tend to feed on particular plants that occurin their preferred habitats.
1.1 OTHER LOCUSTS AND GRASSHOPPERS
Other important locust and grasshopper species occur mainly in Africa, but also in the Middle East. They includeamong others Zonocerusvariegatus L. and Kraussariaanguilifera Krauss (Orthoptera: Pyrgomorphidae); the Egyptiangrasshopper AnacridiumaegyptiumL., CataloipusfuscocoeruleipesSjostedt, DiabolocatantopsaxillarisThunberg,HieroglyphusdaganensisKrauss, the brown locust LocustanapardalinaWalk, the red locustNomadacrisseptemfasciataServille, Kraussellaamabile Krauss, Pyrgomorpha cognate Krauss (Orthoptera: Acrididae).Some of these locust and grasshopper species may cause severe economic damage to crops while others may occurusually only in small numbers, rarely causing heavy damage and having no economic importance.(COPR 1982)
Share
Tweet
Share
Share
Email
Disclaimer: Using this Service/Resources: You are allowed to use the original model papers you will receive in the following ways:
- 1. This material content is developed to serve as a GUIDE for students to conduct academic research work
- 2. As a source for additional understanding of the subject.
- 3. As a source for ideas for your own research work (if properly referenced).
- 4. For PROPER paraphrasing (see your university definition of plagiarism and acceptable paraphrase)
- 5. Direct citing (if referenced properly)
https://googleads.g.doubleclick.net/pagead/ads?client=ca-pub-4520697494762171&output=html&h=120&slotname=7505758887&adk=3567603055&adf=3923565668&pi=t.ma~as.7505758887&w=728&lmt=1621685034&psa=1&format=728×120&url=https%3A%2F%2Fwww.eduproject.com.ng%2Fcrop-science%2Ffood-plant-preferred-by-oedaleus-species%2Findex.html&flash=0&wgl=1&uach=WyJXaW5kb3dzIiwiNi4xIiwieDg2IiwiIiwiOTAuMC40NDMwLjIxMiIsW11d&dt=1621685034138&bpp=1&bdt=199&idt=590&shv=r20210517&cbv=%2Fr20190131&ptt=9&saldr=aa&abxe=1&cookie=ID%3Dd39348862879b93d-2227d1b040a7004e%3AT%3D1617097284%3ART%3D1617097284%3AS%3DALNI_Mb47etmWpQfqNyREDHiqiQCaw2Tpg&prev_fmts=0x0%2C728x120&nras=1&correlator=5906524246847&frm=20&pv=1&ga_vid=1881725368.1617097285&ga_sid=1621685035&ga_hid=1922140460&ga_fc=0&u_tz=60&u_his=17&u_java=0&u_h=800&u_w=1280&u_ah=760&u_aw=1280&u_cd=24&u_nplug=3&u_nmime=4&adx=62&ady=1617&biw=1263&bih=689&scr_x=0&scr_y=0&eid=31061047&oid=3&pvsid=1367209085351092&pem=196&ref=https%3A%2F%2Fwww.eduproject.com.ng%2Fcrop-science%2Fproject-topics.html&eae=0&fc=1920&brdim=0%2C0%2C0%2C0%2C1280%2C0%2C1280%2C760%2C1280%2C689&vis=1&rsz=%7Co%7CeEbr%7C&abl=NS&pfx=0&fu=0&bc=31&ifi=3&uci=a!3&btvi=1&fsb=1&xpc=myd3pxGB8m&p=https%3A//www.eduproject.com.ng&dtd=604