Encyclopedia of Entomology

2008 Edition
| Editors: John L. Capinera

Grasshoppers of the Argentine Pampas

  • Norma E. Sánchez
  • María L. De Wysiecki
Reference work entry
DOI: https://doi.org/10.1007/978-1-4020-6359-6_1169

The Pampas, which occupies the Province of Buenos Aires and parts of the Provinces of Entre Ríos, Santa Fe, Córdoba, La Pampa and San Luis, are temperate subhumid grasslands. Mesothermic grasses dominate in this region of mild climate with mean annual temperature ranging from 10 to 20°C, and annual rainfall between 400 and 1600 mm. There is a general decrease southwestward in annual precipitation, soil organic matter and grassland productivity.

The landscape has been altered markedly during the last century due to agricultural and grazing activities, and pristine grasslands have been drastically modified. Most of the land has been converted to cropland, mainly soybean, corn, sunflower and wheat.

Among the most important native herbivores are grasshoppers, which are a recurrent pest of the agro ecosystems of this area. These insects may cause, in some years, forage and crop losses of considerable magnitude.

The Pampas and the Great Plains of North America have some ecological...
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References

  1. Cigliano MM, de Wysiecki ML, Lange C (2000) Grasshopper (Orthoptera, Acrididae) species diversity in the Pampas, Argentina. Diver Distrib 6:81–91CrossRefGoogle Scholar
  2. de Wysiecki ML, Sánchez NE (1992) Dieta y remoción de forraje de Dichroplus pratensis (Orthoptera: Acrididae) en un pastizal natural de la provincia de La Pampa, Argentina. Ecología Austral 2:19–27Google Scholar
  3. Lange CE (1998) Patógenos asociados a tucuras (Orthoptera: Acrididoideae) en las provincias de Buenos Aires y La Pampa. Monografía 16. Comisión de Investigaciones Científicas de la provincia de Buenos AiresGoogle Scholar
  4. Sánchez NE, de Wysiecki ML (1990) Quantitative evaluation of feeding activity of the grasshopper Dichroplus pratensis Bruner (Orthoptera: Acrididae) in a natural grassland of La Pampa, Argentina. Environ Entomol 19:1392–1395Google Scholar
  5. Soriano A (1992) Río de La Plata Grasslands. In: Coupland RT (ed) Natural grasslands. Introduction and western hemisphere. Ecosystems of the World, 8. Elsevier, Amsterdam, The Netherlands, pp. 367–407Google Scholar

Copyright information

© Springer Science+Business Media B.V. 2008

Authors and Affiliations

  • Norma E. Sánchez
    • 1
  • María L. De Wysiecki
    • 1
  1. 1.Universidad Nacional de La PlataLa PlataArgentina