2003
DOI: 10.4067/s0716-078x2003000300007
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Morfometría y dimorfismo sexual de Elasmoderus wagenknechti (Liebermann) (Orthoptera: Tristiridae) en dos eventos de irrupción poblacional

Abstract: RESUMENLa ecología poblacional de los insectos de secano ha sido poco estudiada en Chile. Existen diferentes especies que habitan los interfluvios de la región desértico transicional que, bajo ciertas condiciones ambientales, irrumpen demográficamente. Una de estas especies es Elasmoderus wagenknechti (Orthoptera: Tristiridae). Esta es una especie endémica a Chile, su rango de distribución se extiende desde Taltal en la Segunda Región (25º22' S, 70º31' O) hasta Salamanca en la Cuarta Región (31º46'S, 70º58'O).… Show more

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Cited by 16 publications
(16 citation statements)
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“…Although grasshoppers are easily recognized in the field because of their toad-shaped form and jumping habit, special care was taken on recognizing and counting the male over the female's dorsum, a common characteristic of the species (Toro 1972). Dry biomass was estimated according to Cepeda-Pizarro et al (2003).…”
Section: Methodsmentioning
confidence: 99%
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“…Although grasshoppers are easily recognized in the field because of their toad-shaped form and jumping habit, special care was taken on recognizing and counting the male over the female's dorsum, a common characteristic of the species (Toro 1972). Dry biomass was estimated according to Cepeda-Pizarro et al (2003).…”
Section: Methodsmentioning
confidence: 99%
“…1995, Gutiérrez et al 2000), whereas, it is limited about insects (e.g., Fuentes & Campusano 1985, Cepeda-Pizarro et al 2003 and mites (Cepeda-Pizarro unpublished data); very poor concerning oligochaetes (Santelices et al 1973), and anecdotal with gastropods (J. Cepeda-Pizarro, pers. obs.).…”
mentioning
confidence: 99%
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“…The direction of these differences, that is whether males or females are larger, varies from one group to another [12]. Most of the morphological variations of insects are due to effects associated with the environment, either phenotypic responses (plasticity) or particularly those which act during ontogenetic development [13]. Females are generally larger than males, and this gives them adaptive advantages such as greater fecundity and better parental care [14,15].…”
Section: Introductionmentioning
confidence: 99%
“…Assessing the morphometric characteristics of insects has been very useful in population studies, in terms of communities, and is used for the identification of nymph stages, features of sexual dimorphism (Zolessi, 1956;Turk and Barrera, 1976;Cepeda-Pizarro et al, 2003;Domenico, 2005;Cherril, 2005;Franceschini et al, 2005;Ferreira et al, 2006;Seffrin et al, 2006), life history and evolution with host plants (Klingenberg and Spence, 1997;Ahnesjö and Forsman, 2003;Adis et al, 2008), as well as ecological studies of populations and communities (Dirsh, 1953;Roonwal, 1981;Filin and Ovadia 2007;Pires et al, 2008).…”
Section: Introductionmentioning
confidence: 99%