Published July 6, 2024 | Version v1
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Exploratory Data Analysis for the Classification of Quercus Affinis Scheidw Individuals Resistant, Tolerant, and Vulnerable to the Attack of Andricus Quercuslaurinus (Hyenoptera: Cynipidae)


The cynipid Andricus quercuslaurinus has affected thousands of hectares of oak forests of Quercus laurina and Quercus affinis in Hidalgo, Mexico. The incidence of this gall wasp in hosts of different ages and phenotypic conditions requires thorough characterisation. The objective of this study was to sample the Q. affinis population to classify the infestation levels of A. quercuslaurinus in branches and leaves, characterising the response of individuals to the attack in terms of resistance (R), tolerance (T), and vulnerability (V). The high, medium, low, and very low response levels were determined for the overall total length of branch galls (OTLBG) and the total number of leaves with galls (TNLG). The absence of attack within groups of individuals was verified to associate them with R, T, and V. The OTLBG was less sensitive for diagnosing these characteristics, as the absence of attack occurred in trees of all classes in the different agamic cycles (2012, 2015, 2018). In contrast, the absence of attack was observed only in the first class of TNLG (2018 gamic cycle). Resistance by total absence of attack corresponded to 7% of the individuals in branches and 9% in leaves.


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