Download - Grasshoppers in desert grasslands
![Page 1: Grasshoppers in desert grasslands](https://reader035.vdocuments.net/reader035/viewer/2022062422/56813c2f550346895da5aaff/html5/thumbnails/1.jpg)
Grasshoppers in Grasshoppers in desert desert
grasslandsgrasslands
![Page 2: Grasshoppers in desert grasslands](https://reader035.vdocuments.net/reader035/viewer/2022062422/56813c2f550346895da5aaff/html5/thumbnails/2.jpg)
• Grasshopper population Grasshopper population dynamics are determined dynamics are determined primarily by weatherprimarily by weather
• However, weather impact However, weather impact varies with varies with latitudelatitude
Weather: Direct and Weather: Direct and Indirect Effects on Indirect Effects on
GrasshoppersGrasshoppers
![Page 3: Grasshoppers in desert grasslands](https://reader035.vdocuments.net/reader035/viewer/2022062422/56813c2f550346895da5aaff/html5/thumbnails/3.jpg)
•Slower developmentSlower development•More susceptible to More susceptible to diseases and diseases and natural natural enemiesenemies•Higher mortalityHigher mortality•Less eggs producedLess eggs produced
Less damagingLess damaging
Weather: Direct and Indirect EffectsWeather: Direct and Indirect Effects
![Page 4: Grasshoppers in desert grasslands](https://reader035.vdocuments.net/reader035/viewer/2022062422/56813c2f550346895da5aaff/html5/thumbnails/4.jpg)
•Faster developmentFaster development
•Less susceptible to diseases and Less susceptible to diseases and natural enemiesnatural enemies
•Lower mortalityLower mortality
•More eggs producedMore eggs produced
More damagingMore damaging
Weather: Direct and Indirect EffectsWeather: Direct and Indirect Effects
![Page 5: Grasshoppers in desert grasslands](https://reader035.vdocuments.net/reader035/viewer/2022062422/56813c2f550346895da5aaff/html5/thumbnails/5.jpg)
• In the Northern Great Plains, In the Northern Great Plains, summer summer temperaturestemperatures appear to be critical for appear to be critical for successful grasshopper developmentsuccessful grasshopper development
• Outbreaks in MT and WY usually occur after Outbreaks in MT and WY usually occur after several consecutive years of drought and several consecutive years of drought and above-average summer temperaturesabove-average summer temperatures
• In the desert grasslands of NM and AR the In the desert grasslands of NM and AR the situation is differentsituation is different
• Grasshopper populations increase after Grasshopper populations increase after above-average spring precipitation, above-average spring precipitation, followed by hot and dry summerfollowed by hot and dry summer
![Page 6: Grasshoppers in desert grasslands](https://reader035.vdocuments.net/reader035/viewer/2022062422/56813c2f550346895da5aaff/html5/thumbnails/6.jpg)
Favorable conditions for Favorable conditions for pest grasshoppers in pest grasshoppers in New Mexico desert New Mexico desert
grasslandsgrasslands• Mild autumn for egg-layingMild autumn for egg-laying
• Cool wet winter for good spring plant Cool wet winter for good spring plant growthgrowth
• Dry warm spring for grasshopper Dry warm spring for grasshopper nymphal developmentnymphal development
![Page 7: Grasshoppers in desert grasslands](https://reader035.vdocuments.net/reader035/viewer/2022062422/56813c2f550346895da5aaff/html5/thumbnails/7.jpg)
Main Grasshopper SpeciesMain Grasshopper Species
Pallidwinged grasshopperPallidwinged grasshopper
![Page 8: Grasshoppers in desert grasslands](https://reader035.vdocuments.net/reader035/viewer/2022062422/56813c2f550346895da5aaff/html5/thumbnails/8.jpg)
Main Grasshopper SpeciesMain Grasshopper Species
Cream grasshopperCream grasshopperCibolacris parvicepsCibolacris parviceps
![Page 9: Grasshoppers in desert grasslands](https://reader035.vdocuments.net/reader035/viewer/2022062422/56813c2f550346895da5aaff/html5/thumbnails/9.jpg)
Main Grasshopper SpeciesMain Grasshopper Species
Creosotebush grasshopperCreosotebush grasshopper
![Page 10: Grasshoppers in desert grasslands](https://reader035.vdocuments.net/reader035/viewer/2022062422/56813c2f550346895da5aaff/html5/thumbnails/10.jpg)
Main Grasshopper SpeciesMain Grasshopper Species
Arid spurthroated Arid spurthroated grasshoppergrasshopper
![Page 11: Grasshoppers in desert grasslands](https://reader035.vdocuments.net/reader035/viewer/2022062422/56813c2f550346895da5aaff/html5/thumbnails/11.jpg)
Main Grasshopper SpeciesMain Grasshopper Species
Migratory grasshopperMigratory grasshopper
![Page 12: Grasshoppers in desert grasslands](https://reader035.vdocuments.net/reader035/viewer/2022062422/56813c2f550346895da5aaff/html5/thumbnails/12.jpg)
Main Grasshopper SpeciesMain Grasshopper Species
Packard grasshopperPackard grasshopper
![Page 13: Grasshoppers in desert grasslands](https://reader035.vdocuments.net/reader035/viewer/2022062422/56813c2f550346895da5aaff/html5/thumbnails/13.jpg)
Main Grasshopper SpeciesMain Grasshopper Species
Spottedwinged grasshopperSpottedwinged grasshopper
![Page 14: Grasshoppers in desert grasslands](https://reader035.vdocuments.net/reader035/viewer/2022062422/56813c2f550346895da5aaff/html5/thumbnails/14.jpg)
Main Grasshopper SpeciesMain Grasshopper Species
Clearwinged grasshopperClearwinged grasshopper
![Page 15: Grasshoppers in desert grasslands](https://reader035.vdocuments.net/reader035/viewer/2022062422/56813c2f550346895da5aaff/html5/thumbnails/15.jpg)
Main Grasshopper SpeciesMain Grasshopper Species
Bigheaded grasshopperBigheaded grasshopper
![Page 16: Grasshoppers in desert grasslands](https://reader035.vdocuments.net/reader035/viewer/2022062422/56813c2f550346895da5aaff/html5/thumbnails/16.jpg)
Main Grasshopper SpeciesMain Grasshopper Species
Whitewhiskered grasshopperWhitewhiskered grasshopper