Keywords
bromeliad
Florida
How to Cite
Abstract
Metamasius callizona (Chevrolat) (Coleoptera: Dryophthoridae) female weevils, when challenged with 21 Tillandsia utriculata L. plants (Bromeliaceae) of size 11.9 ± 0.3 cm diameter (longest leaf 9.8 ± 0.5 cm) in the laboratory, did not produce offspring, whereas they did so on 21 plants of 16.2 ± 0.3 cm diameter (longest leaf 17.1 ± 0.6 cm) and larger. The minimal s3ize of T. utriculata plants needed to sustain a reproducing population of M. callizona is thus defined. It is not clear from experimental evidence that T. utriculata plants of size 21.4 ± 0.3 cm diameter (longest leaf 29.7 ± 1.5 cm) were better hosts for developing M. callizona weevils than were plants of size 16.2 ± 0.3 (longest leaf 17.1 ± 0.6 cm). Se utilizaron hembras de Metamasius callizona (Chevrolat) (Coleoptera: Dryophthoridae) para analizar el potencial de oviposición y desarrollo de larvas en tres tamaños de bromeliáceas. Se utilizaron 21 plantas de Tillandsia utriculata L. (Bromeliaceae) de 11.9 ± 0.3 cm de diámetro (hoja de mayor longitud 9.8 ± 0.5 cm) y bajo condiciones de laboratorio. Metamasius callizona no produjo ninguna cría en estas plantas. Sín embargo en 21 plantas de la misma especie de 16.2 ± 0.3 cm de díametro (hoja de mayor tamaño 17.1 ± 0.6 cm) las hembras ovipositaron y las larvas emergieron de los huevos. De esta forma se define el tamaño mínimo que necesitan estas plantas para sostener una población del picudo M. callizona. Los datos colectados no muestran una evidencia clara de que plantas de mayor tamaño 21.4 ± 0.3 cm de diámetro (hoja de mayor tamaño 29.7 ± 1.5 cm) son mejores hospederos que las plantas con 16.2 ± 0.3 cm de díametro (hoja de mayor tamaño 17.1 ± 0.6 cm) para M. callizona.
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