Life Tables and Intrinsic Rates of Increase of the Pecan Leaf Scorch Mite13

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Abstract
Life tables were constructed for the immature stages of the pecan leaf scorch mite (PLSM), Eotetranychus hicoriae (McGregor), at 21.1,26.7, and 32.2, and constant illumination (24:0 LD). Immature mortality varied from 81% at 32.2 to 96% at 21.1°C Life tables also were constructed for the PLSM at two photoperiodic regimes (10:14 and 14:10 LD) at 21.1°C. Immature mortality was 48 and 46% at 10:14 and 14:10 LD, respectively. Intrinsic rates of increase (rm) varied from less than 0.001 at 21.1°C and constant illumination to 0.105 at 32°C and constant illumination. The rm values are ca. 50% of those reported for other tetranychids and result from a rearing technique which caused high immature mortality rates.