TITLE:
Association of Temperature, Relative Humidity, and Shoot Size Scale with the Number of Eggs and Nymphal Stages of Diaphorina citri (Hemiptera: Liviidae)
AUTHORS:
Jesús Armando Vargas-Tovar, Crystian Sadiel Venegas-Barrera, Martha Olivia Lázaro-Dzul, Vidal Zavala-Zapata, Ausencio Azuara-Domínguez
KEYWORDS:
Citrus sinensis, HLB, Monitoring, Psyllid, Shoots
JOURNAL NAME:
Advances in Entomology,
Vol.13 No.1,
January
17,
2025
ABSTRACT: The objective of the study was to determine the influence of temperature, relative humidity, and shoot size of Valencia orange trees Citrus sinensis (L.) Osbeck (Sapindales: Rutaceae) on the abundance of eggs and nymphal stages of Diaphorina citri Kuwayama (Hemiptera: Liviidae). The experiment was established on 3.18 hectares cultivated with Valencia orange. The number of eggs, nymphs, temperature, relative humidity, and scale of the size of the shoot were recorded from January to July and from September to November 2020. The association of these variables was determined by multiple correspondence analyses. The conservation of the same number of individuals between consecutive samples and the increase in the number of eggs and nymphs was associated with temperature (17˚C - 23˚C), relative humidity (75% - 78%) and the availability of shoots from V1 to VS in March, April, June, and July. The largest number of N1 and N2 nymphs was recorded in January, February, May, and October. The highest population of eggs and nymphs N3 and N5 occurred in September. In November, there was a reduction in eggs and nymphs. Meanwhile, the nymph N4 was presented independently of the variables analyzed.