harvesting grasshoppers sphenarium purpurascens in mexico for human consumption: a comparison with insecticidal control for managing pest outbreaks

Predominant crops (corn, bean and alfalfa) in the Puebla-Tlaxcala Valley are routinely attacked by the grasshopper Sphenarium purpurascens (Orthoptera: Pyrgomophidae). The traditional method for managing this pest in Mexico has been the application of organophosphorus insecticides such as malathion....

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Bibliographic Details
Authors: Cerritos, R, Cano-Santana, Zenón
Format: article
Status:Published version
Publication Date:2008
Country:México
Institution:Universidad Nacional Autónoma de México
Repository:Sistema de Información de la Facultad de Ciencias, UNAM
OAI Identifier:oai:repositorio.fciencias.unam.mx:11154/1005
Online Access:http://hdl.handle.net/11154/1005
Access Level:Open access
Keyword:Agronomy
Sphenarium purpurascens
pest management
pest control
grasshopper control
edible insect
ootheca density
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oai_identifier_str oai:repositorio.fciencias.unam.mx:11154/1005
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network_name_str México
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spelling harvesting grasshoppers sphenarium purpurascens in mexico for human consumption: a comparison with insecticidal control for managing pest outbreaksCerritos, RCano-Santana, ZenónAgronomySphenarium purpurascenspest managementpest controlgrasshopper controledible insectootheca densityPredominant crops (corn, bean and alfalfa) in the Puebla-Tlaxcala Valley are routinely attacked by the grasshopper Sphenarium purpurascens (Orthoptera: Pyrgomophidae). The traditional method for managing this pest in Mexico has been the application of organophosphorus insecticides such as malathion. Inhabitants from Central Mexico also capture the grasshoppers for sale as food. In this study, we compared the capture of grasshoppers for human consumption to the conventional application of insecticides as a pest management strategy. The number of oothecae (egg pod), eggs, eggs per ootheca and the reproductive rate (Ro) were estimated over 2 years of the study. Counts were made on the edge and inner part of nine alfalfa plots. Egg density was found to be significantly affected by control tactic, with control > manual harvest > insecticide application. Egg density at the edge of farming plots was 14.9 times higher than within a plot. Ros ranged from 1.74 to 4.88 in the control, from 0.21 to 0.98 in the plots under manual harvest and from 0.38 to 0.77 in the plots under insecticide application. Similar results were found comparing oothecae densities. A mean of 39.5 eggs/ootheca was found, which constitutes the highest recorded value for this species. This research shows that manual harvest reduces the density of S. purpurascens and suggests that implementation of this mechanical method of control may be substituted for chemical control. Mechanical control provides general advantages: (1) a second profitable product for the human community(2) savings realized from reduced cost of insecticidesand (3) reduced risk of soil and water contamination by insecticides. We propose that the manual harvest of insects is a practical method of pest control, which could be extensively applied in other crop systems in the world. (C) 2007 Elsevier Ltd. All rights reserved.2011-01-22T10:26:10Z2011-01-22T10:26:10Z2011-01-22T10:26:10Z2011-01-22T10:26:10Z2008info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article0261-2194http://hdl.handle.net/11154/100594610.1016/j.cropro.2007.08.00127(40607):473-480reponame:Sistema de Información de la Facultad de Ciencias, UNAMinstname:Universidad Nacional Autónoma de Méxicoinstacron:UNAMenCrop Protectioninfo:eu-repo/semantics/openAccessoai:repositorio.fciencias.unam.mx:11154/10052025-09-17T19:19:58Z
dc.title.none.fl_str_mv harvesting grasshoppers sphenarium purpurascens in mexico for human consumption: a comparison with insecticidal control for managing pest outbreaks
title harvesting grasshoppers sphenarium purpurascens in mexico for human consumption: a comparison with insecticidal control for managing pest outbreaks
spellingShingle harvesting grasshoppers sphenarium purpurascens in mexico for human consumption: a comparison with insecticidal control for managing pest outbreaks
Cerritos, R
Agronomy
Sphenarium purpurascens
pest management
pest control
grasshopper control
edible insect
ootheca density
title_short harvesting grasshoppers sphenarium purpurascens in mexico for human consumption: a comparison with insecticidal control for managing pest outbreaks
title_full harvesting grasshoppers sphenarium purpurascens in mexico for human consumption: a comparison with insecticidal control for managing pest outbreaks
title_fullStr harvesting grasshoppers sphenarium purpurascens in mexico for human consumption: a comparison with insecticidal control for managing pest outbreaks
title_full_unstemmed harvesting grasshoppers sphenarium purpurascens in mexico for human consumption: a comparison with insecticidal control for managing pest outbreaks
title_sort harvesting grasshoppers sphenarium purpurascens in mexico for human consumption: a comparison with insecticidal control for managing pest outbreaks
dc.creator.none.fl_str_mv Cerritos, R
Cano-Santana, Zenón
author Cerritos, R
author_facet Cerritos, R
Cano-Santana, Zenón
author_role author
author2 Cano-Santana, Zenón
author2_role author
dc.subject.none.fl_str_mv Agronomy
Sphenarium purpurascens
pest management
pest control
grasshopper control
edible insect
ootheca density
topic Agronomy
Sphenarium purpurascens
pest management
pest control
grasshopper control
edible insect
ootheca density
description Predominant crops (corn, bean and alfalfa) in the Puebla-Tlaxcala Valley are routinely attacked by the grasshopper Sphenarium purpurascens (Orthoptera: Pyrgomophidae). The traditional method for managing this pest in Mexico has been the application of organophosphorus insecticides such as malathion. Inhabitants from Central Mexico also capture the grasshoppers for sale as food. In this study, we compared the capture of grasshoppers for human consumption to the conventional application of insecticides as a pest management strategy. The number of oothecae (egg pod), eggs, eggs per ootheca and the reproductive rate (Ro) were estimated over 2 years of the study. Counts were made on the edge and inner part of nine alfalfa plots. Egg density was found to be significantly affected by control tactic, with control > manual harvest > insecticide application. Egg density at the edge of farming plots was 14.9 times higher than within a plot. Ros ranged from 1.74 to 4.88 in the control, from 0.21 to 0.98 in the plots under manual harvest and from 0.38 to 0.77 in the plots under insecticide application. Similar results were found comparing oothecae densities. A mean of 39.5 eggs/ootheca was found, which constitutes the highest recorded value for this species. This research shows that manual harvest reduces the density of S. purpurascens and suggests that implementation of this mechanical method of control may be substituted for chemical control. Mechanical control provides general advantages: (1) a second profitable product for the human community
publishDate 2008
dc.date.none.fl_str_mv 2008
2011-01-22T10:26:10Z
2011-01-22T10:26:10Z
2011-01-22T10:26:10Z
2011-01-22T10:26:10Z
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv 0261-2194
http://hdl.handle.net/11154/1005
946
10.1016/j.cropro.2007.08.001
identifier_str_mv 0261-2194
946
10.1016/j.cropro.2007.08.001
url http://hdl.handle.net/11154/1005
dc.language.none.fl_str_mv en
language_invalid_str_mv en
dc.relation.none.fl_str_mv Crop Protection
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv 27(40607):473-480
reponame:Sistema de Información de la Facultad de Ciencias, UNAM
instname:Universidad Nacional Autónoma de México
instacron:UNAM
instname_str Universidad Nacional Autónoma de México
instacron_str UNAM
institution UNAM
reponame_str Sistema de Información de la Facultad de Ciencias, UNAM
collection Sistema de Información de la Facultad de Ciencias, UNAM
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.81155

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