01430nas a2200109 4500008004100000245010500041210006900146520093800215100002201153700002201175856012301197 2019 eng d00aNew Data on Vibrational Communication in the Beetle Acanthoscelides obtectus (Coleoptera, Bruchidae)0 aNew Data on Vibrational Communication in the Beetle Acanthosceli3 a

Many Bruchidae species are quarantine pests and are widely used as model species. However, as far as we know, acoustic communication has never been studied in detail in this group. Below we present the first data on the repertoire and emission mechanisms of acoustic communication in the bean weevil Acanthoscelides obtectus. Three types of signal emission were recorded in A. obtectus: striking the head and abdomen against the substrate, abdominal tremulations, and wing vibrations. Two types of signals were recorded in males, and one type, in females. All the acoustic signals recorded in A. obtectus contained both stable (pulse duration, pulse period: CV = 5–12%) and variable (duration of the pulse series: CV = 50%) signal elements. The frequency parameters showed low variation in all the signals (CV = 5–11%). Moreover, the dominant frequencies were similar in all the signal types (889–1158 Hz).

1 aShestakov, L., S.1 aKasparson, A., A. uhttps://bio.acousti.ca/content/new-data-vibrational-communication-beetle-acanthoscelides-obtectus-coleoptera-bruchidae02246nas a2200265 4500008004100000022001400041245014600055210006900201260001600270300001400286490000800300520138500308653002301693653002801716653001601744653002501760653001801785653002301803100002401826700002501850700001701875700001901892700001801911856005101929 2017 eng d a0015-404000aBioacoustics of Acanthoscelides obtectus (Coleoptera: Chrysomelidae: Bruchinae) on Phaseolus vulgaris (Fabaceae)0 aBioacoustics of iAcanthoscelides obtectusi Coleoptera Chrysomeli cJan-03-2017 a109 - 1150 v1003 aAcanthoscelides 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.10aacoustic detection10aalmacenamiento de grano10acommon bean10adetección acústica10agrain storage10asub-Saharan Africa1 aAffognon, Hippolyte1 aMutungi, Christopher1 aRichter, Uwe1 aHensel, Oliver1 aRohde, Barukh uhttp://www.bioone.org/doi/10.1653/024.100.0116