caa a22 4500 397571968 CHVBK 20180308164844.0 cr unu---uuuuu 161202e19960801xx s 000 0 eng 10.1093/ee/25.4.743 doi (NATIONALLICENCE)oxford-10.1093/ee/25.4.743 Host Specificity of Cactoblastis cactorum (Lepidoptera: Pyralidae), an Exotic Opuntia-feeding Moth, in Florida [Elektronische Daten] [Derek M. Johnson, Peter D. Stiling] The recent arrival of the cactus moth, Cactoblastis cactorum (Berg) in Florida in 1989 has raised concern for the native Opuntia cacti. At particular risk is Opuntia spinosissima, whose entire U.S. population consists of 12 plants in the Florida Keys. We examined host choice of both C. cactorum larvae and ovipositing females to determine if any species of native Opuntia are preferred by C. cactorum. In addition, larval performance among Opuntia hosts was examined. Ovipositing moths showed no host preference in interspecific host choice experiments. Although larvae significantly preferred O. spinosissima over the other Opuntia species, larval survivorship on O. spinosissima was less than on O. stricta and O. humifusa. We also examined intraspecific host choice between pads of O. spinosissima to see if any of the 12 remaining plants is more resistant to attack than others. Such information is valuable for future restoration efforts to protect O. spinosissima. No adult or larval host choice was demonstrated in the intraspecific experiments. © 1996 Entomological Society of America Population Ecology nationallicence Cactoblastis cactorum nationallicence Opuntia nationallicence host choice nationallicence Johnson Derek M. Department of Biological Sciences, University of South Florida, Tampa, FL 33620 aut Stiling Peter D. Department of Biological Sciences, University of South Florida, Tampa, FL 33620 aut Environmental Entomology Oxford University Press 25/4(1996-08-01), 743-748 0046-225X 25:4<743 1996 25 ee https://doi.org/10.1093/ee/25.4.743 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1093/ee/25.4.743 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Johnson Derek M. Department of Biological Sciences, University of South Florida, Tampa, FL 33620 aut NATIONALLICENCE 700 1- Stiling Peter D. Department of Biological Sciences, University of South Florida, Tampa, FL 33620 aut NATIONALLICENCE 773 0- Environmental Entomology Oxford University Press 25/4(1996-08-01), 743-748 0046-225X 25:4<743 1996 25 ee Metadata rights reserved CC BY-NC-4.0 http://creativecommons.org/licenses/by-nc/4.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-oxford