Examinando por Materia "Escolítinos"

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  • Miniatura
    PublicaciónAcceso abierto
    Claves para la identificación de escolítinos (coleoptera: curculionidae: scolytinae) asociados al agroecosistema cacao en el sur de México.
    (2011-10-06) Pérez De La Cruz, Manuel; Equihua Martínez, Armando; Romero Nápoles, Jesús; Valdez Carrasco, Jorge M.; Cruz Pérez, Aracely de la
    Se presenta una clave para la identificación de 51 especies de Scolytinae adultos pertenecientes a 26 géneros, con 40 fotografías que ayudan a la identificación de los insectos. Los especímenes fueron obtenidos por medio de trampas cebadas con alcohol etílico, trampa de luz fluorescente y la captura sobre sus plantas hospederas asociadas al agroecosistema cacao en el sur de México. Algunas especies como Xyleborus volvulus, X. Ferrugineus y Xylosandrus morigerus son consideradas plagas de importancia económica en las zonas tropicales de México ya que pueden atacar árboles sanos, enfermos o recién muertos, inclusive pueden provocar la muerte de árboles de sombra y hasta el mismo árbol de cacao.
  • Miniatura
    PublicaciónAcceso abierto
    Fluctuation of Premnobius cavipennis (Coleoptera: Curculionidae: Scolytinae) populations in balsa (Ochroma pyramidale) plantations in the central zone of the Ecuadorian Littoral.
    (Universidad del Valle, 2021-02-03) Averos, Joselyn Briggite; Castro Olaya, Jessenia; Martínez Chevez, Malena; Guachambala Ando, Marcelino; Peñarrieta Bravo, Soraya; Chirinos Torres, Dorys; García Cruzatti, Luz; Sociedad Colombiana de Entomología - Socolen; Universidad del Valle; Montoya Lerma, James
    This study aimed to determine the population fluctuation of Premnobius cavipennis and the effect of the trap height on balsa plantations (Ochroma pyramidale). The research was in El Vergel, El Empalme, and Guapara, three localities of Ecuador. There were used flight-interception traps with alcohol as an attractant, placed at one, four, and eight meters high. The collection and evaluation were carried out every week, for one year by locality. Premnobius cavipennis showed a population fluctuation throughout the year, with population peaks in months of the rainy season in the three locations. In El Vergel, the greatest abundance of P. cavipennis was found with 2,382 individuals, showing a population maximum in December. In El Empalme 1,263 individuals were captured, with population increases in January and April. In Guapara 525 individuals were registered, showing a population increase in March. There were captured individuals of P. cavipennis in the three heights of the traps in the three locations. There were highly significant differences between the heights, with a greater effect on the capture at one meter in the three locations of individuals at one meter, behavior that was the same in the three locations.