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Insects associated to yellow pitaya crops (Selenicereus megalanthus) on Inzá Cauca, Colombia ; Insectos asociados a cultivos de pitaya amarilla (Selenicereus megalanthus) en Inzá, Cauca, Colombia

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  • Additional Information
    • Publication Information:
      Sociedad Colombiana de Entomología - SOCOLEN y Universidad del Valle - Univalle
    • Publication Date:
      2020
    • Collection:
      Publicaciones Académicas de la Universidad del Valle
    • Abstract:
      In the municipality of Inzá (Cauca, Colombia) the profitability of the main economic resource, coffee crops, decreased. As an alternative, yellow pitaya crops were established, but knowledge of the possible phytosanitary limitations for this crop in this region was absent. This study presents the entomofauna associated with yellow pitaya crops in three plantations of Inzá that contrast in agronomic and landscape features. Direct sampling of the insects found on each structure of the plant and sampling was done using entomological nets from directly under the plants to 50 cm away. Abiotic factors and indices of ecological diversity were considered. With direct sampling, 58 families were recognized; of these, Formicidae (n = 22), Coreidae (n = 11) and Lonchaeidae (n = 7) were most prevalent. Five orders and 56 families of insects were collected using entomological nets. The plants with the highest density of cladodes favored the Lonchaeidae (τ = 1.0; P = 0.00), Formicidae (τ = 1.00; P = 0.007) and Cicadellidae (τ = 1.00; P = 0.00) families. Insects from the Lonchaeidae family benefitted from the positive correlation between rainfall (τ = 1.00; P = 0.00) and temperature (τ = 1.00; P = 0.00). Damage associated with Dasiops spp. (Diptera) was not found. The presence of D. saltans was not confirmed because all the specimens collected were males. The Margalef (DMg) = 7.42; Shannon-Wiener (H ‘) = 3.217 (Alpha) and Whittaker (βw) = 1.0; and Routledge (βr) = 0.25 (Beta) diversity indices represented a large variety of beneficial insect families. A system of regular entomological surveillance and technical support should be established for producers with aim of providing long-term economic viability for this crop in the municipality. ; Como alternativa al descenso en la rentabilidad del cultivo de café, principal fuente económica en el municipio de Inzá (Cauca, Colombia), se establecieron cultivos de pitaya amarilla sin conocer las limitantes fitosanitarias para este cultivo en esta zona. Este trabajo presenta la entomofauna asociada a cultivos de pitaya amarilla en tres predios productivos de Inzá, contrastantes por sus características agronómicas y de paisaje. Se realizó muestreo directo de insectos sobre cada estructura de la planta, muestreo con pases dobles de red entomológica a 50 cm de distancia de la planta y se consideraron factores abióticos e índices de diversidad ecológica. Con muestreo directo se reconocieron 58 familias, prevaleciendo Formicidae (n = 22), Coreidae (n = 11) y Lonchaeidae (n = 7). Con red entomológica se recolectaron cinco órdenes y 56 familias de insectos. Las plantas con mayor densidad de cladodios favorecieron a las familias Lonchaeidae (τ = 1,0; P = 0,00), Formicidae (τ = 1,00; P = 0,007) y Cicadellidae (τ = 1,00; P = 0,00). La precipitación (τ = 1,00; P = 0,00) y la temperatura (τ = 1,00; P = 0,00) se correlacionaron positivamente beneficiando a Lonchaeidae. No se encontraron daños asociados a Dasiops spp. (Diptera). No se confirmó la presencia de D. saltans porque todos los especímenes correspondieron a machos. Los índices de diversidad de Margalef (DMg) = 7,42; Shannon-Wiener (H’) = 3,217 (Alfa) y Whittaker (βw) = 1,0; y Routledge (βr) = 0,25 (Beta) representados principalmente por gran variedad de familias de insectos benéficos. Debe establecerse un sistema de vigilancia entomológica regular y acompañamiento técnico a los productores con miras al sostenimiento económico a largo plazo para este cultivo en el municipio.
    • File Description:
      application/pdf
    • Relation:
      https://revistas.univalle.edu.co/index.php/SOCOLEN/article/view/7961/11314; https://revistas.univalle.edu.co/index.php/SOCOLEN/article/view/7961
    • Accession Number:
      10.25100/socolen.v45i2.7961
    • Online Access:
      https://doi.org/10.25100/socolen.v45i2.7961
      https://doi.org/10.25100/socolen.v45i2
      https://revistas.univalle.edu.co/index.php/SOCOLEN/article/view/7961
    • Rights:
      Derechos de autor 2019 María Del Mar González-Trujillo, Andrés Peraza-Arias, Helena L Brochero
    • Accession Number:
      edsbas.B221A92B