Patrón de distribución y riqueza de especies de las mariposas de la tribu Satyrini (Nymphalidae: Satyrinae) en los bosques nublados de Cochabamba (Bolivia)
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RevActaNova.
Abstract
Se muestra los patrones de distribución de mariposas de las subtribus Euptychiina y Pronophilina (Nymphalidae: Satyrinae: Satyrini), en los bosques nublados tropicales de Cochabamba (Yunga). El análisis se realizó en base al gradiente elevacional desde los 700 a 3 700 m de altura, se utilizó 1 147 registros de mariposas de la tribu Satyrini. En función a la riqueza de especies y cada registro se trabajó con 55 especies de Euptychiina y 109 especies de Pronophilina, se calculó medidas de tendencia central, posteriormente se realizaron el análisis de regresión simple entre la riqueza de especies con la altura, precipitación, temperatura máxima y mínima. Los resultados muestran que la mayor riqueza de especies de Satyrini (1 800 m) presentan un patrón de distribución en forma de joroba (hump-shaped), e independientemente cada sub tribu presenta este similar patrón pero a diferente altura: Euptychiina (1 500 m) y Pronophilina (2 250 m). Y los análisis de regresión prueban que la elevación y precipitación tienen un efecto significativo sobre la distribución en forma de joroba en Satyrini. Este tipo de análisis son la clave para identificar áreas importantes de conservación en montañas, y nos proporciona criterios básicos e información sobre cuales con las causas de concentración de especies a determinadas alturas.
We evaluated the distribution of subtribes Pronophilina y Euptychiina butterflies (Nymphalidae: Satyrinae: Satyrini) in tropical cloud forests (Yungas) of Cochabamba. The analysis is performed based on the elevational gradient from 700 to 3 700 m high, was used 1 147 records of the tribe Satyrini butterflies. Depending on the species richness and each record we worked with 55 species of Euptychiina and 109 species of Pronophilina, we calculated measures of central tendency, subsequently performed simple regression analysis between species richness with altitude, rainfall, temperature maximum and minimum. The results show that the highest species richness of Satyrini (1 800 m) exhibit a distribution pattern hump-shaped, and whether each subtribe presents this same pattern but at different heights: Euptychiina (1 500 m) and Pronophilina (2 250 m). And regression analyzes show that elevation and precipitation have a significant effect on the hump-shaped distribution in Satyrini. This type of analysis is the key to identifying important conservation areas in mountains, and provides basic criteria and information on the causes which species concentration at certain heights.
We evaluated the distribution of subtribes Pronophilina y Euptychiina butterflies (Nymphalidae: Satyrinae: Satyrini) in tropical cloud forests (Yungas) of Cochabamba. The analysis is performed based on the elevational gradient from 700 to 3 700 m high, was used 1 147 records of the tribe Satyrini butterflies. Depending on the species richness and each record we worked with 55 species of Euptychiina and 109 species of Pronophilina, we calculated measures of central tendency, subsequently performed simple regression analysis between species richness with altitude, rainfall, temperature maximum and minimum. The results show that the highest species richness of Satyrini (1 800 m) exhibit a distribution pattern hump-shaped, and whether each subtribe presents this same pattern but at different heights: Euptychiina (1 500 m) and Pronophilina (2 250 m). And regression analyzes show that elevation and precipitation have a significant effect on the hump-shaped distribution in Satyrini. This type of analysis is the key to identifying important conservation areas in mountains, and provides basic criteria and information on the causes which species concentration at certain heights.
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Vol. 6, No. 3