Abstract
Laboratory and field studies were conducted with nymphs and adults of the Neotropical stink bug Runibia perspicua (F.) to evaluate their biology on plants. Total nymph mortality was ca. 13% on immature fruits of Brunfelsia australis Benth. (IFBA) and 90% on raw shelled peanuts, Arachis hypogaea L. (RSP); no nymphs survived on immature pods of green bean, Phaseolus vulgaris L., or on immature fruits of privet, Ligustrum lucidum Ait. Nymph developmental time was ca. 36 on IFBA and 55 days on RSP. Body weight was significantly greater when nymphs were raised isolated compared to those raised in groups. Adult feeding activity was greater than third instars on IFBA. Adult longevity on IFBA + cherry tomato, Solanum lycopersicum L. fruit, reached ca. 150 days. On IFBA, fecundity was 2.5 egg masses/female and 48.3 eggs/female; 25.6% of the eggs hatched. Adults did not reproduce on tomato. Body weight gain did not increase significantly for both sexes during the first four weeks of adult life on IFBA. In the field, plants of B. australis were surveyed in Passo Fundo, RS (28°15′S; 52°24′W). The majority of egg masses were deposited on the lower (abaxial) surface of leaves. Nymphs aggregated on immature fruits, and adults were seldom found on the plants. These are the first data on the performance of R. perspicua on B. australis indicating that this plant species is suitable to the bug’s biology.
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Acknowledgments
We thank Natália Webber, Alice Agostinetto, and Júlio Minosso for help in the laboratory activities. We also thank Prof. Jocélia Grazia, Federal University of Rio Grande do Sul, for the insect identification and Prof. Branca A. M. Severo, University of Passo Fundo, for the plant identification.
Funding
This study was partially supported by a National Council of Research and Technology of Brazil (CNPq) grant 471517/2012-7 to ARP. This study was also supported by Embrapa Unit at Passo Fundo, RS.
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This study was approved by the Publication Committee of the Embrapa National Wheat Research Center, Passo Fundo, RS, Brazil, under number 5467/2017.
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Edited by Marcelo N Rossi - UNIFESP
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Marsaro, A.L., Panizzi, A.R. & Lucini, T. Biology of a Neotropical Harlequin Stink Bug, Runibia perspicua (F.). Neotrop Entomol 47, 828–834 (2018). https://doi.org/10.1007/s13744-017-0572-5
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DOI: https://doi.org/10.1007/s13744-017-0572-5