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      Distribución de Rogadinae (Hymenoptera: Braconidae) en una gradiente altitudinal en los andes del sur del Perú Translated title: Distribution of rogadinae (hymenoptera: braconidae) in an altitudinal gradient in the southern peruvian andes

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          Abstract

          Se estudió la variación altitudinal de la riqueza, diversidad y estructura comunitaria de las avispas parasitoides de la subfamilia Rogadinae (Hymenoptera: Braconidae) en una gradiente altitudinal en el Valle de Cosñipata (Cuzco, Perú). Para ello, se definieron cuatro sitios de estudio entre 800 y 2800 m: Tono (800 m), San Pedro (1500 m), Rocotal (2000 m) y Wayquecha (2800 m) en los que se efectuaron cinco muestreos empleando trampas Malaise. Se capturó un total de 351 individuos comprendiendo 109 morfoespecies en 5 géneros (Aleiodes, Cystomastax, Clinocentrus, Triraphis y Stiropius). La localidad San Pedro (1500 m) presentó mayor índice de diversidad de Shannon-Wiener (H), seguida por Tono, Rocotal y Wayquecha, con valores muy cercanos de diversidad (H: 3.894, 3.062, 2.989, 2.653, respectivamente). El índice de similaridad de Bray-Curtis muestra mayor similitud entre San Pedro y Rocotal (0.29). La composición de especies estuvo correlacionada positivamente con la elevación.

          Translated abstract

          We studied the altitudinal variation in richness, diversity and community structure of parasitoid wasps of the Rogadinae subfamily (Hymenoptera: Braconidae), along an elevational gradient in the Cosñipata valley (Cuzco, Peru). We selected four open field collecting localities at several elevations from 800 to 2800 m: Tono (800 m), San Pedro (1500 m), Rocotal (2000 m) and Wayquecha (2800 m). We carried out five collections using Malaise traps. We captured a total of 351 individuals: 109 morphospecies in 5 genera (Aleiodes, Cystomastax, Clinocentrus, Triraphis and Stiropius). San Pedro (1500m) presented the highest diversity level, according to the Shannon-Wiener index (H), followed by Tono, Rocotal and Wayquecha (H: 3.894, 3.062, 2.989, 2.653 respectively). The Bray Curtis similarity index showed the greatest similarity between San Pedro and Rocotal (0.29). Species composition was positively correlated with elevation.

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          Most cited references41

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          Ecological Diversity and Its Measurement

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            Métodos para medir la biodiversidad

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              The relationship among area, elevation, and regional species richness in neotropical birds.

              C Rahbek (1997)
              The elevational gradient of species richness is often claimed to mirror the latitudinal gradient and has traditionally been explained by assuming a decrease in productivity with elevation and more recently by Rapoport's rule. The influence of area on the pattern has rarely been considered. Analyses of all South American tropical land birds (more than one-fourth of the extant bird species on Earth) are used to examine four species richness/elevation models: null model, Rapoport's rule, and monotonic or hump-shaped productivity/species richness relationships. To quantify the area effect, species-area curves were created for seven elevational zones. Not accounting for area, species richness declined monotonically with elevation, but area accounted for 67%-91% of the variation in species richness per zone. When area was factored out, a hump-shaped pattern emerged, with more species in the 500-1,000-m (P<.005) and 1,000-1,500-m zones (P<.10) than in the 0-500-m zone. Rapoport's rule and the monotonic productivity/species richness relationship were thus not supported. Instead, elevational turnover rates and numbers of shared species between zones suggested that the hump-shaped pattern reflects geometric constraints (as predicted by the null model) imposed by the narrow span of the gradient, and it is suggested that midelevational zones may represent sink habitats.
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                Author and article information

                Journal
                ecol
                Ecología Aplicada
                Ecol. apl.
                Universidad Nacional Agraria La Molina. Departamento Académico de Biología (Lima, , Peru )
                1726-2216
                August 2013
                : 12
                : 2
                : 141-145
                Affiliations
                [01] Lima orgnameUniversidad Nacional Mayor de San Marcos orgdiv1Museo de Historia Natural orgdiv2Departamento de Entomología Perú
                Article
                S1726-22162013000200009 S1726-2216(13)01200200009
                f6b92170-013f-46d1-9aa1-c43a62603319

                This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

                History
                : 06 September 2013
                : 27 October 2013
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 34, Pages: 5
                Product

                SciELO Peru

                Self URI: Texto completo solamente en formato PDF (ES)
                Categories
                Artículos originales

                Cosñipata valley,parasitoid wasps,cloud forest,Diversity,valle de Cosñipata,avispas parasitoides,bosque nublado,Diversidad

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