Production of honeydew by scale insects associated with bracatinga (mimosa scabrella benth) in serra catarinense, Southern Brazil

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Abstract

Scale insects Stigmacoccus paranaensis (Foldi, 2006) associated with bracatinga trees (Mimosa scabrella) in Santa Catarina, Brazil, can play an important economic role and guarantee the production of “bracatinga honeydew honey”. This scale insect has the ability to excrete large amounts of honeydew, of economic importance for beekeepers, especially due to the natural occurrence of host plants at high density, known as “bracatingais”. In this sense, the objective of this study was to evaluate the honeydew produced by scale insects associated with M. scabrella in the Bom Retiro, Santa Catarina, Brazil. We determined the density of the host plant in the studied area, the intensity of infestation by scale insects, and the volume and sugar concentration of excreted honeydew. The average density of bracatinga was 437.5 individuals ha-1, and the average density of scale insects per plant was 8,287. During 10 minutes, the average rate of honeydew excretion by scale insects was 0.45 µl and 0.34 µl, respectively, in 2002 and 2004. The estimated volume of honeydew production was 0.54 L in 2002 and 0.41 L in 2004 tree-1 day-1. The highest sugar concentration was observed in 2004 (28.13%). The excretion rate was affected by climatological factors and the size of the insects. This is the first study presenting a systematic evaluation of honeydew production by scale insects in Southern Brazil. The results of the present study support production of honeydew honey in the Serra Catarinense region as an important sustainable economic and traditional activity.

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Martins-Mansani, M., Faita, M. R., Orth, A. I., & Nodari, R. O. (2021). Production of honeydew by scale insects associated with bracatinga (mimosa scabrella benth) in serra catarinense, Southern Brazil. Revista Brasileira de Entomologia, 65(1). https://doi.org/10.1590/1806-9665-RBENT-2020-0072

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