Comparative tarsal morphology of two secondary stored product beetle pests,Oryzaephilus surinamensis (L.) and Cryptolestes ferrugineus (Stephens), that vary in their climbing ability on smooth surfaces |
| |
| Affiliation: | 1. Department of Life Sciences, The University of the West Indies, St. Augustine, Trinidad and Tobago;2. Department of Food Production, The University of the West Indies, St. Augustine, Trinidad and Tobago;1. University of Mohaghegh Ardabili, Moghan College of Agriculture and Natural Resources, Ardabil, Iran;2. University of Mohaghegh Ardabili, Department of Plant Protection, Faculty of Agriculture and Natural Resources, Ardabil, Iran;1. School of Biological Sciences, The University of Queensland, Brisbane, Queensland, 4072, Australia;2. Plant Biosecurity Cooperative Research Centre, LPO Box 5012, Bruce, ACT, 2617, Australia;3. Department of Agriculture and Fisheries, Queensland, Ecosciences Precinct, GPO Box 267, Brisbane, Queensland, 4001, Australia;4. Department of Primary Industries and Regional Development, 3 Baron-Hay Court, South Perth, WA, 6151, Australia;5. New South Wales Department of Primary Industries, Private Mail Bag, Wagga Wagga, NSW, 2650, Australia;1. Department of Sustainable Agriculture and Biodiversity Ecosystem Management, School of Life Sciences and Bioengineering, The Nelson Mandela African Institution of Science and Technology (NM –AIST), P.O. Box 447, Arusha, Tanzania;2. Centre for Research, Agriculture Advancement, Teaching Excellence and Sustainability in Food and Nutrition Security (CREATES), Nelson Mandela African Institution of Science and Technology, P.O. Box 447, Arusha, Tanzania;3. Tanzania Agricultural Research Institute (TARI –Ilonga), P.O.Box 33, Kilosa, Tanzania;1. Department of Grain Science and Industry, Kansas State University, Manhattan, KS, 66506, USA;2. Department of Entomology, Kansas State University, Manhattan, KS, 66506, USA |
| |
| Abstract: | Oryzaephilus surinamensis and Cryptolestes ferrugineus are serious secondary pests that infest commodities and packaged food. Both species differ in their climbing ability on smooth surfaces, such as the surfaces of packages or grains. In this study, we tested the hypothesis that tarsal and inter-claw adhesive structures of the species differ significantly. To test this hypothesis, we morphologically described and compared (quantitatively and qualitatively) the claws and setal structures on the tarsi and claws of O. surinamensis and C. ferrugineus using scanning electron microscopy (SEM). The main difference found was in the presence and/or quantity of tarsal and inter-claw adhesive structures between O. surinamensis and C. ferrugineus. The profound morphological differences regarding the presence and higher quantity of adhesive structures can explain why O. surinamensis is a better climber than C. ferrugineus on inclined smooth surfaces. The shape of the claws was similar in both species, but those of C. ferrugineus were slightly shorter and sharper (i.e., claw tip radius = 1.17 μm) than those of O. surinamensis (tip radius = 1.63 μm), indicating that C. ferrugineus is better morphologically adapted to move over rough material with smaller asperities. The obtained results suggest that the presence or absence of adhesive tarsal structures can be used for assessment of the ability of various pests to move on smooth surfaces of packaging or grains. The outcomes of the work may also provide inspiration to material and biomimetic scientists to improve pest-proof packaging material with anti-adhesive properties. |
| |
| Keywords: | Climbing Legs Tarsi Setal adhesive structures Claws |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
