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dc.date.accessioned 2017-07-05T15:12:43Z
dc.date.available 2017-07-05T15:12:43Z
dc.identifier.uri http://digital.cic.gba.gob.ar/handle/11746/5930
dc.title Desarrollo post-embrionario, fecundidad y consumo de alimento de Dichroplus exilis (Orthoptera: Acrididae) bajo condiciones controladas es
dc.type Artículo es
dcterms.abstract Dichroplus exilis is a widely distributed species in Southern South America. Although there have been reports of D. exilis as an agricultural pest, some recent observations suggest that the damage attributed to D. elongatus may actually have been caused by D. exilis. This study was conducted to determine the postembryonic life cycle stages, fertility and food consumption of this species under controlled conditions (30°C, 14L-10D, 40% RH).Individuals employed belong to the laboratory-hatched first generation (F1), from adults (n=64, ♀=28, ♂=36) collected in natural grasslands near Rafaela, Santa Fe province in North- Eastern Argentina. Three cohorts of 16, 17 and 20 individuals were monitored independently in acetate tubes on a daily basis, until death of the last insect. Average fecundity was 381.84, 38.54 eggs per female. Egg-pod incubation time was 14.4, 1.08 days and six nymphal instars were recorded. Nymphal development time was 41.38, 0.71 days (I=8.73, 0.20; II=6.38, 0.24; III=5.64, 0.33; IV=7.15; 0.43; V=9.76, 0.54; IV=7.85, 0.95). The recorded food consumption was 9.89, 1.08 (mg/ind/day) for nymphs IV, 18.04, 0.73 (mg/ind/day) for nymphs V-IV, 16.76, 1.06 (mg/ind/day) for pre-reproductive males, 28.09, 1.81 (mg/ind/day) for pre-reproductive females, 7.71, 0.91 (mg/ind/day) for reproductive males and 13.06, 0.71 (mg/ind/day) for reproductive females, while the average adult food consumption, regardless of sex and reproductive status, was 16.41, 4.32mg/day. Average food consumption of adult females was 17.47, 1.15mg, and was significantly higher than that of males (10.83, 0.91mg). Data obtained in this study showed that D. exilis exhibits at least some of the biological attributes needed to configure an actual or potential agricultural pest, albeit not yet recognized as such. Field monitoring of grasshopper communities in areas where damage by D. exilis is suspected is envisaged in order to determine its possible status as a pest. en
dcterms.alternative Postembryonic development, fecundity and food consumption of Dichroplus exilis (Orthoptera: Acrididae) under controlled conditions en
dcterms.extent p. 1579-1587 es
dcterms.issued 2011-12
dcterms.language Español es
dcterms.license Attribution-NonCommercial-NoDerivatives 4.0 International (BY-NC-ND 4.0) es
dcterms.publisher Universidad de Costa Rica. Escuela de Biología es
dcterms.spatial Argentina es
dcterms.subject agricultural pest en
dcterms.subject consumption tests en
dcterms.subject Dichroplus elongatus en
dcterms.subject grasshopper en
dcterms.subject nymphal instars en
cic.version info:eu-repo/semantics/publishedVersion es
dcterms.creator.author Bardi, Christian es
dcterms.creator.author Mariottini, Yanina es
dcterms.creator.author De Wysiecki, María L. es
dcterms.creator.author Lange, Carlos Ernesto es
cic.lugarDesarrollo Universidad Nacional de La Plata es
dcterms.subject.materia Ciencias Biológicas es
dcterms.identifier.url Recurso completo es
dcterms.identifier.other DOI 10.15517/rbt.v59i4.3421 es
dcterms.isPartOf.item Informe científico de investigador: Lange, Carlos Ernesto (2011-2012) es
dcterms.isPartOf.issue vol. 59, nº 4 es
dcterms.isPartOf.series Revista de Biologia Tropical es
cic.isPeerReviewed true es
cic.isFulltext true es


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