Lack of macronutrients in Eucalyptus urophylla S.T. Blake (Myrtaceae) seedlings affects feed and development of Podisus nigrispinus (Hemiptera: pentatomidae) = Deficiência de macronutrientes em mudas de Eucalyptus urophylla S.T. Blake (Myrtaceae) afetam a alimentação e o desenvolvimento de Podisus nigrispinus (Hemiptera: pentatomidae)

Estela Rosana Durães Vieira, Enilson de Barros Silva, Marcus Alvarenga Soares, Sebastião Lourenço Assis Júnior, Gabriel Alves Barroso, Pedro Guilherme Lemes

Abstract


Several studies have reported the importance of phytophagy in the history of life from predator stinkbugs. However, knowledge of the nutrients acquired by these insects, from plant materials, is scarce. The phytophagy studies of zoophytophagous predators benefit biological control programs, making them more effective, since the best resources may be offered to these insects, increasing the potential for predation and, thus obtaining, success in pest control. Thus, this study investigated the development and zoophytophagy of predator Podisus nigrispinus (Dallas) (Hemiptera: Pentatomidae) in eucalyptus seedlings, deficient in macronutrients. The experiment was conducted in a greenhouse and the treatments consisted of individual nitrogen omission, phosphorus, potassium, calcium, magnesium and sulfur nutrient solution, where the eucalyptus seedlings were being conducted. The pupae of Tenebrio molitor L. (Coleoptera: Teneobridae) were offered ad libitum. The results of this experiment demonstrated the importance of nutrition in plants for the development and predation of P. nigrispinus. The plants deficient in nitrogen and magnesium reduce the predation efficiency of this zoophytophagous. The omission of calcium, magnesium and sulfur adversely affected the development of this insect predator, extending its immature stages. The proper nutritional balance of the plants is essential for the success in biological control programs that use zoophytophagous predators.


Keywords


Biological Control, Plant Nutrition, Zoophytophagy

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DOI: http://dx.doi.org/10.14393/BJ-v34n1a2018-34484

Bioscience Journal
ISSN 1981-3163 - Online Journal

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