eprintid: 9965
rev_number: 17
eprint_status: archive
userid: 1305
dir: disk0/00/00/99/65
datestamp: 2017-04-18 08:10:42
lastmod: 2017-09-06 08:40:35
status_changed: 2017-04-18 08:10:42
type: article
metadata_visibility: show
creators_name: Njoroge, A W
creators_name: Affognon, H D
creators_name: Mutungi, C
creators_name: Richter, U
creators_name: Hensel, O
creators_name: Rohde, B
creators_name: Mankin, R W
icrisatcreators_name: Affognon, H D
affiliation: International Centre of Insect Physiology and Ecology (Nairobi)
affiliation: University of Kassel, Faculty of Agricultural Engineering, Nordbahnhofstraße (Witzenhausen)
affiliation: ICRISAT (Bamako)
affiliation: Department of Dairy and Food Science and Technology, Egerton University (Egerton)
affiliation: Department of Electrical and Computer Engineering, University of Florida (Gainesville)
affiliation: US Department of Agriculture, Agricultural Research Service, Center for Medical, Agricultural, and Veterinary Entomology (Gainesville)
country: Kenya
country: Germany
country: Mali
country: USA
title: Bioacoustics of Acanthoscelides obtectus (Coleoptera: Chrysomelidae: Bruchinae) on Phaseolus vulgaris (Fabaceae)
ispublished: pub
subjects: s26
subjects: s28
subjects: s31
subjects: s355
subjects: s4004
divisions: CRPS1
crps: crp1.5
full_text_status: public
keywords: Acoustic detection; Grain storage; Sub-Saharan Africa; Common bean
note: We gratefully acknowledge the financial support for this research
by the Deutsche Gesellschaft für Internationale Zusammenarbeit,
GmbH (GIZ) under the Reduction of Postharvest Losses and Value
Addition in East African Food Value Chains (RELOAD) project (project
number 12.1433.7-001.00 contract number 81161243). A. W. N. was
supported by a RELOAD project scholarship awarded by the International
Centre for Insect Physiology and Ecology (icipe). B. B. R. was supported
supported by a National Science Foundation Graduate Research Fellowship,
DGE-1315138, and by a teaching assistantship from the University
of Florida. Mention of a trademark or proprietary product is solely for
the purpose of providing specific information and does not constitute a
guarantee or warranty of the product by the United States Department
of Agriculture and does not imply its approval to the exclusion of other
products that may also be suitable. The United States Department of
Agriculture is an equal opportunity employer.
abstract: Acanthoscelides obtectus (Say) (Coleoptera: Chrysomelidae) is an economically important pest of common bean, Phaseolus vulgaris L. (Fabaceae), in the tropics and subtropics. The larvae are cryptic and spend most of their development time inside the bean seeds. Their presence is almost imperceptible except for circular emergence holes created by the last instar larvae in preparation for their exit as adults. We considered a hypothesis that readily available acoustic detection devices can be used to detect larvae and adults in stored beans. Laboratory experiments were conducted in an anechoic chamber to characterize the sounds of movement and feeding and estimate whether they could be distinguished from background noise in storage environments. The larvae produced low-amplitude insect sound impulses frequently occurring in trains (bursts) of 2 or more impulses (mean = 3.6). The adults produced lower-amplitude impulses, although at a higher rate than the larvae, and there were significantly fewer impulses per burst. These features of the acoustic signals were useful for real-time detection of A. obtectus infestation and discrimination from background noise in stored common beans in sub-Saharan Africa. The use of such technology in the future, especially if its costs can be reduced further, may contribute to efforts to alleviate hunger and poverty in the region.
date: 2017
date_type: published
publication: Florida Entomologist
volume: 100
number: 1
publisher: Florida Entomological Society
pagerange: 109-115
id_number: 10.1653/024.100.0116
refereed: TRUE
issn: 0015-4040
official_url: http://dx.doi.org/10.1653/024.100.0116
related_url_url: https://scholar.google.co.in/scholar?q=Bioacoustics+of+Acanthoscelides+obtectus+%28Coleoptera%3A+Chrysomelidae%3A+Bruchinae%29+on+Phaseolus+vulgaris+%28Fabaceae%29&btnG=&hl=en&as_sdt=0%2C5
related_url_type: pub
citation:   Njoroge, A W and Affognon, H D and Mutungi, C and Richter, U and Hensel, O and Rohde, B and Mankin, R W  (2017) Bioacoustics of Acanthoscelides obtectus (Coleoptera: Chrysomelidae: Bruchinae) on Phaseolus vulgaris (Fabaceae).  Florida Entomologist, 100 (1).  pp. 109-115.  ISSN 0015-4040     
document_url: http://oar.icrisat.org/9965/1/Bioacoustics%20of%20Acanthoscelides%20obtectus.pdf