Tabela de vida de fertilidade de Tetranychus gloveri BANKS (Prostigmata: Tetranychidae) em feijão-de-porco (Canavalia ensiformis (L.) DC)

Abstract

Tetranychus gloveri is a phytophagous mite that belongs to the Tetranychidae family, with a preference for a region with a warm tropical and subtropical climate. It is associated with 112 species of host plants distributed in 41 families present in several countries. In Brazil, it has been reported in the states of Ceará, Bahia, Pará, Sergipe, and Rio Grande do Norte. Although it is a species present in different regions of the globe and associated with different cultures, studies that evidence the biology of this species are scarce. The objective of this study was to determine the biology and fertility table life of T. gloveri in jack bean (Canavalia ensiformis). The experiments were carried out in a controlled environment at 25 ± 1.0 °C, 70 ± 5.0% RH and 12-hour photophase. Females were transferred to circular acrylic units containing jack bean leaf fragment for oviposition for 24 hours, then removed. The eggs were evaluated every 12 hours until they reached the adult stage. Adults were observed daily until death, and eggs of copulated and non-copulated females were accounted for. The average development time was 9.94 ± 0.41 days. The longevity of the female was 21.70 (± 1.45) days. The net reproduction rate (R0) was 84.61 females, the mean generation time (T) was 19.06 days, the intrinsic growth rate (rm) was 0.23 female/female/day, the finite rate of increase (λ): 1.26 females/day and mean doubling time (TD) was 2.98 days. These results demonstrate that T. gloveri has the ability to survive and reproduce in jack bean leaves, with a relatively short development time.