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Walking stability of Rhyzopertha dominica (Fabricius, 1792) (Coleoptera: Bostrichidae)

Overview of attention for article published in Brazilian Journal of Biology, April 2016
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Walking stability of Rhyzopertha dominica (Fabricius, 1792) (Coleoptera: Bostrichidae)
Published in
Brazilian Journal of Biology, April 2016
DOI 10.1590/1519-6984.16914
Pubmed ID

E. M. Pires, R. M. Nogueira, D. S. Pina, C. L. M. Manica, L. R. A. Faroni, P. S. A. Moreira


Results obtained in studies can contribute to the advancement of science and innovative methods and techniques for developing practical activities. Reporting conditions that may restrict the implementation of research is critical to ensure the optimal development of further technical studies. The objective of this study was to assess the walking stability of R. dominicaon a flat and smooth surface. The study was based on the determination of mortality, morphology and walking stability of the insect outside the grain mass, on a flat and smooth surface. Mortality of adults of this Coleoptera in conditions with and without food was similar, which explains the difficulty that this insect had for accessing the food source on the flat and smooth surface. The measurements of body length (BOL), width (BOW) and height (BOH) ofR. dominica were compared with those of Tribolium castaneum (Coleoptera: Tenebrionidae), which showed good ability to walk in these conditions. This study indicated that the former presents lower BOL and BOW, and greater BOH than the second, and all these variables showed differences when analyzed simultaneously by means of the construction of multivariate morphometric indices (Width × Height, Length × Height and Height × Length × Width). These morphometric variables, together with the definition of the geometry most similar to the body shape, resulted in determination of the center of gravity (CG) and static rollover threshold (SRTgeom) for both species. Rhyzopertha dominica and T. castaneum presented CGs considered high and low, respectively, and together with the values obtained forSRTgeom, may justify that R. dominica can be considered a less stable species during movement, and presents greater risk of rollover on flat and smooth surfaces.

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Geographical breakdown

Country Count As %
Unknown 12 100%

Demographic breakdown

Readers by professional status Count As %
Student > Bachelor 3 25%
Student > Ph. D. Student 3 25%
Professor 1 8%
Student > Master 1 8%
Researcher 1 8%
Other 2 17%
Unknown 1 8%
Readers by discipline Count As %
Agricultural and Biological Sciences 3 25%
Engineering 2 17%
Nursing and Health Professions 1 8%
Environmental Science 1 8%
Psychology 1 8%
Other 1 8%
Unknown 3 25%