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10.25100/socolen.v47i1.9279
Submitted: 26-03-2020
Published: 03-02-2021

Fluctuation of Premnobius cavipennis (Coleoptera: Curculionidae: Scolytinae) populations in balsa (Ochroma pyramidale) plantations in the central zone of the Ecuadorian Littoral

Universidad Técnica Estatal de Quevedo
Universidad Técnica de Manabí
Universidad Técnica de Manabí
Plantabal S. A. 3A Composites
Universidad Técnica de Manabí
Universidad Técnica de Manabí
Universidad Técnica de Manabí
Keywords: Plantation, population fluctuation, climatic period, location, scolytines, Curculionidae, Premnobius cavipennis

How to Cite

1.
Averos JB, Castro-Olaya J, Martínez Chevez M, Guachambala Ando M, Peñarrieta Bravo S, Chirinos Torres D, et al. Fluctuation of Premnobius cavipennis (Coleoptera: Curculionidae: Scolytinae) populations in balsa (Ochroma pyramidale) plantations in the central zone of the Ecuadorian Littoral. Rev. Colomb. Entomol. [Internet]. 2021 Feb. 3 [cited 2026 Oct. 23];47(1). Available from: https://revistacolombianaentomologia.univalle.edu.co/index.php/SOCOLEN/article/view/9279
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Abstract

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.

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How to Cite

1.
Averos JB, Castro-Olaya J, Martínez Chevez M, Guachambala Ando M, Peñarrieta Bravo S, Chirinos Torres D, et al. Fluctuation of Premnobius cavipennis (Coleoptera: Curculionidae: Scolytinae) populations in balsa (Ochroma pyramidale) plantations in the central zone of the Ecuadorian Littoral. Rev. Colomb. Entomol. [Internet]. 2021 Feb. 3 [cited 2026 Oct. 23];47(1). Available from: https://revistacolombianaentomologia.univalle.edu.co/index.php/SOCOLEN/article/view/9279
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Copyright (c) 2021 Joselyn Briggite Averos, Jessenia Castro-Olaya, Malena Martínez-Chevez, Marcelino Guachambala-Cando, Soraya Peñarrieta-Bravo, Dorys Chirinos-Torres, Luz García-Cruzatty