TY - JOUR AU - Averos, Joselyn Briggite AU - Castro-Olaya, Jessenia AU - Martínez Chevez, Malena AU - Guachambala Ando, Marcelino AU - Peñarrieta Bravo, Soraya AU - Chirinos Torres, Dorys AU - García Cruzatti, Luz PY - 2021/06/18 Y2 - 2024/03/28 TI - Fluctuation of Premnobius cavipennis (Coleoptera: Curculionidae: Scolytinae) populations in balsa (Ochroma pyramidale) plantations in the central zone of the Ecuadorian Littoral JF - Revista Colombiana de Entomología JA - Rev. Colomb. Entomol. VL - 47 IS - 1 SE - Basic / Research paper DO - 10.25100/socolen.v47i1.9279 UR - https://revistacolombianaentomologia.univalle.edu.co/index.php/SOCOLEN/article/view/9279 SP - AB - <p>This study aimed to determine the population fluctuation of <em>Premnobius cavipennis</em> and the effect of the trap height on balsa plantations (<em>Ochroma pyramidale</em>). 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. <em>Premnobius cavipennis</em> 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 <em>P. cavipennis</em> 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 <em>P. cavipennis</em> 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.</p> ER -