Abstract
Butterflies and moths (Lepidoptera: Papilionoidae, Saturniidae, Sphingidae) at the Natural National Park Gorgona, Colombian Pacific. Gorgona is a continental island at the Pacific coast of Colombia. For 26 years it was a prison but in 1986 it was declared a National Park, and the land was left aside for natural succession. This study presents a list of its Lepidoptera, compares it to a former study and discusses some eco- logical factors that could promote in situ biodiversity. Butterflies and moths were collected during three trips from October 2010 to May 2011. Butterfly observations were carried out along the main island paths. Baited traps using decomposed fruit, fish and chicken, were installed for three days at each zone (two kinds of bait per site) and sweep net catches were also made between 09:00h and 18:00h. For moths, black and white light traps were located in open areas. Town lights were also checked daily. Percent canopy cover was measured at each collection point. A total of 52 species belonging to seven families were found, of which 30 butterfly and 11 moth species are new records for the island. Cerro Trinidad and Sendero Chonta (22 and 20 species, respectively) were the richest places. Species richness did not decrease with canopy cover. Heliconious sara and Aeria eurimedia were the dominant species, but their distribution did not overlap. Three species were the most widely distributed in the island: H. sara (11 sites, 166 individuals), Calycopis cerata (10 sites, 71 individuals) and Ae. eurimedia (nine sites, 72 individuals). Catoblepia xanthicles occidentalis was found 87 years after the last report. Most spe- cies accumulation curves were not asymptotic suggesting that the diversity of the island is higher than expected. This study found twice as much the number of butterflies species reported for Gorgona and is the first record of
Highlights
La información proveniente de inventarios biológicos permite evaluar el estado actual de un taxón foco, analizar el estado ecológico de hábitats objeto de conservación, identificar especies vulnerables o que pueden estar en peligro de extinción y aportar a datos de distribución y biología de las especies (Kattán & Naranjo, 2008)
Para establecer las categorías se consideró la cercanía al poblado y los se tuvieron en cuenta los impactos al entorno generados en el pasado y las actividades actuales de ecoturismo
Diversidad de mariposas diurnas (Lepidoptera: Papilionoidea y Hesperioidea) en Santiago de Cali, Valle del Cauca, Colombia
Summary
Área de estudio: Los sitios de muestreos abarcaron aproximadamente 65% del área terrestre del PNN Gorgona (2°47’-3°6’ N y 78°6’-78°18’ W) visitando los lugares con acceso seguro. Se recolectaron mariposas utilizando los métodos descritos por Villareal et al (2004) utilizando (a) seis trampas Van Someren-Rydon (VSR) cebadas con fruta fermentada (dos), con pescado (dos) y pollo descompuesto (dos), montadas en cada sitio durante tres días, y (b) observación directa y recolecta con red entomológica en trayectos de longitud no definida entre las 09:00 y 18:00h, con un esfuerzo de muestreo diario de 9 horas/hombre. Los análisis numéricos solo se realizaron para las mariposas, debido al bajo registro de polillas. Para cada sitio se obtuvo una matriz de presencia-ausencia y se calculó el número de especies esperadas mediante estimadores no paramétricos (Chao 2, Jackknife 1 y 2), los cuales permiten un mejor análisis con menor sesgo, debido a que tiene en cuenta datos de RESULTADOS. Las familias con mayor riqueza fueron Nymphalidae (8 subfamilias; 19 especies) y Riodinidae (2 subfamilias, 12 especies); las de menor riqueza fueron Pieridae (3 especies), Papilionidae (2 especies) y Lycaenidae.
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