Effects of temperature and tomato variety on development stages of Bactericera cockerelli (Sulc) (Hemiptera: Triozidae)

Abstract

M. O. (2020) Effects of temperature and tomato variety on development stages of Bactericera cockerelli (Sulc) (Hemiptera: Triozidae). Acta Zoológica Mexicana (nueva serie), 36, 1-10.ABSTRACT. Tomato is one of the most consumed vegetables per capita in the world; it is grown both in the open and in greenhouses. Under these conditions, the pest is considered a severe problem, especially considering Bactericera cockerelli Sulc. Therefore, in this experiment, the life history of this pest insect in two tomato varieties: "Charanda F1" and "Rafaello" the differences in the development stages of the insect, the mean temperatures of two cycles, and the accumulated heat units determined. The work consisted of evaluating the development of the instars of B. cockerelli during two crop cycles in both varieties, as well as the accumulation of heat units to differentiate the distinct instars. The insect populations developed in the Rafaello variety had shorter lives and showed a higher death rate of eggs than did those that developed in Charanda F1. The temperature was another determining factor; when the temperature remained low, the insect biological cycle was longer. Likewise, heat units were different between the two varieties; in Rafaello, 598.13 heat units needed while in Charanda F1, only 464.98. The differences may be due to the morphological characteristics of each variety, as the presence of trichomes and oils. Thus, we suggest that these variables studied in future research works.

Eficiencia de la reutilización de la patente caja iniciadora de insectos

“…Estos abejorros fueron recolectados cuando salen a pecorear con red entomopatógena (Salvarrey, Arbulo, Santos e Invernizzi, 2013). Inmediatamente, se colocaron en frascos plásticos de 250 ml, que se llenaron de etanol al 70% para su preservación (Vargas et al, 2020). De la misma forma, se colocaron 20 cajas de madera con una tapa transparente y 20 cajas comerciales.…”

Effect of Fertilization on Morphometry of Bactericera cockerelli (Sulc) on Tomato (Solanum lycopersicum L.) at Greenhouse Conditions

“…However, there are exceptions to the evolution; in general, pest species with multivoltine development feed on diverse host plants. This is true for B. cockerelli that feed on a range of host genera in the Solanaceae family (Pletsch 1947, Wallis 1955, Hodkinson and White 1981, Vargas-Madriz et al 2014a, 2020). The insect feeds on sap of plants by inserting its stylet and taking sugars and amino acids it cannot itself synthesize from the plant (Thao et al 2000, Percy 2003).…”