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dc.contributor.author
Franceschini, Maria Celeste
dc.contributor.author
Martínez, Fedra Solange
dc.contributor.author
de Wysiecki, Maria Laura
dc.date.available
2017-10-02T19:19:49Z
dc.date.issued
2014-12
dc.identifier.citation
Franceschini, Maria Celeste; Martínez, Fedra Solange; de Wysiecki, Maria Laura; Performance and feeding preference of cornops aquaticum (orthoptera: acrididae) on Eichhornia crassipes and crop plants in native area; Orthopterists' Society; Journal Of Orthoptera Research; 23; 2; 12-2014; 83-90
dc.identifier.issn
1082-6467
dc.identifier.uri
http://hdl.handle.net/11336/25666
dc.description.abstract
The semiaquatic grasshopper Cornops aquaticum Bruner, which is highly specific of Eichhornia crassipes (Pontederiaceae), constitutes one of the most abundant herbivores in the Neotropical wetlands and a possible biological control agent of this weed in South Africa. The aims of this study were (1) to assess the performance of each age category of C. aquaticum on crop plants and the host plant E. crassipes; (2) to assess the feeding preference of this grasshopper on crop plants in presence and absence of E. crassipes; and (3) to determine the presence of nymphs and adults of this grasshopper on crops and in the adjacent wetlands where Eichhornia plants are present. Crop plants included in this study were Zea mays, Oryza sativa, Saccharum officinarum and Ilex paraguariensis. The age categories of C. aquaticum population were nymphs A (instar I and II), nymphs B (instar III to VI) and adults (females and males). To assess grasshopper performance on E. crassipes and crop plants, survival and oviposition were registered during the no-choice tests. To evaluate feeding preference, choice tests with crop plants in presence and absence of E. crassipes were performed. Abundance of C. aquaticum in the crop patches and the wetlands vegetation was assessed using an entomological net. During the no-choice tests, high survival of almost C. aquaticum individuals was observed on Z. mays and E. crassipes, except for nymphs A fed on Z. mays. Ovipositions were registered in E. crassipes, Z. mays and S. officinarum, but only eggs laid in E. crassipes were endophytic and viable. C. aquaticum showed high preference to E. crassipes, whereas Z. mays and S. officinarum were the most preferred plants in the choice test without E. crassipes. We did not find C. aquaticum individuals in the crop patches of Z. mays, O. sativa and S. officinarum, whereas abundance of this grasshopper varied between 28 and 62 individuals captured per minute on Eichhornia floating meadows near these cultivated areas. Our results confirm the high specificity of C. aquaticum to E. crassipes because eggs laid on crop plants are not viable and nymphs A have no possibilities of surviving when fed on these plants. Finally, we recommend carrying out choice tests and field samplings throughout the whole native range of C. aquaticum.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Orthopterists' Society
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Host-Specificity
dc.subject
Leptysminae
dc.subject
Semi-Aquatic Grasshopper
dc.subject
Water Hyacinth
dc.subject.classification
Bioquímica y Biología Molecular
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Ciencias Biológicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Performance and feeding preference of cornops aquaticum (orthoptera: acrididae) on Eichhornia crassipes and crop plants in native area
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-09-19T18:26:08Z
dc.identifier.eissn
1937-2426
dc.journal.volume
23
dc.journal.number
2
dc.journal.pagination
83-90
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Philadelphia
dc.description.fil
Fil: Franceschini, Maria Celeste. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Centro de Ecología Aplicada del Litoral. Universidad Nacional del Nordeste. Centro de Ecología Aplicada del Litoral; Argentina
dc.description.fil
Fil: Martínez, Fedra Solange. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Centro de Ecología Aplicada del Litoral. Universidad Nacional del Nordeste. Centro de Ecología Aplicada del Litoral; Argentina
dc.description.fil
Fil: de Wysiecki, Maria Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Estudios Parasitológicos y de Vectores. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Estudios Parasitológicos y de Vectores; Argentina
dc.journal.title
Journal Of Orthoptera Research
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.bioone.org/doi/abs/10.1665/034.023.0203
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1665/034.023.0203


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