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Introduction to the Behavioral Ecology of Introduction. The Introduction of Insects into Florida

J. Howard Frank and Earl D. McCoy
The Florida Entomologist
Vol. 76, No. 1 (Mar., 1993), pp. 1-53
DOI: 10.2307/3496012
Stable URL: http://www.jstor.org/stable/3496012
Page Count: 53
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Introduction to the Behavioral Ecology of Introduction. The Introduction of Insects into Florida
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Abstract

About 351 insect species have been introduced into Florida for potential release since 1890, though many were never released. Published and unpublished records show that 154 were released, almost all of them (151) as biological control agents of insect pests and weeds. An estimated 24.5% and 66.7% of the species released against insect pests and weeds, respectively, established populations in Florida. The proportion of insect predators (26.7%) was very similar to that of insect parasitoids (23.9%) established. Insect pests targeted were mainly Homoptera (48%), Lepidoptera (24%), and Coleoptera (10%). Most of the insect pests (79%) and weeds (75%) targeted are not native to Florida; 43% of the insect pests are native to Asia, and 50% of the weeds are native to South America. None of the native insect pests and weeds targeted occurs only in Florida. There was no clear relationship of the number of individuals released, nor of their geographic origin, nor of the county in which they were released, to the probability of establishment. /// Desde 1890, cerca de 351 especies de insectos han sido introducidas en Florida con la intención de ser liberadas, aunque muchas de ellas nunca lo fueron. Reportes publicados, así como inéditos, muestran que 154 especies fueron liberadas en el campo, casi todas (151) como agentes de control biológico contra insectos plagas y malezas. Se calcula que un 24,5% de las especies liberadas contra insectos plaga y un 66,7% de las especies liberadas contra malezas lograron establecer poblaciones en Florida. La proporción de especies depredadoras establecidas (26,7%) es muy similar a la proporción de especies parasitoides estableGidas (23,9%). Las plagas contra las cuales las liberaciones fueron hechas, son principalmente Homoptera (48%), Lepidoptera (24%) y Coleoptera (10%). La mayoría de los insectos plaga (79%) y malezas (75%) involucradas no son nativas de Florida; 43% de los insectos plaga son originarios de Asia y 50 de las malezas son nativas de Sur América. Ninguna de estas especies de insectos plaga o malezas ocurren exclusivamente en Florida. No existe una clara relación entre la probabilidad de establecimiento del agente de control biológico y el número de individuos liberados, su origen geográfico o el condado donde se liberaron.

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