02070nas a2200193   4500008004500000020001400045245010600059210006900165260001300234300001400247490000800261520138400269653002301653100002601676700001301702700001801715700001701733856012601750       2008                        Engldsh    a0022-049300aInfestation and population dynamics of insects on stored cassava and yams chips in Benin, West Africa0 aInfestation and population dynamics of insects on stored cassava  cDecember  a1967-19730 v1013 aNatural insect infestation in cassava (Manihot esculenta Crantz subspecies esculenta) and yam (Dioscorea spp.) chips was evaluated during two consecutive storage seasons (2003-2004 and 2004-2005) in two agroecological zones of Benin (Northern Guinea Savanna [NGS] and Sudan Savanna [SS]). The insects infesting chips were collected, identified, and counted, they included Prostephanus truncatus (Horn) (Coleoptera: Bostrychidae), Cathartus quadricollis (Guerin) (Coleoptera: Silvanidae), Carpophilus dimidiatus (F.) (Coleoptera: Nitidulidae), Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae), and Sitophilus zeamais Motschulsky (Coleoptera: Curculionidae). P. truncatus and C. quadricollis were observed with a higher prevalence on cassava than on yam chips. During both seasons after 3 mo of storage, all (100%) cassava chip samples were infested with P. truncatus and C. quadricollis in both agroecological zones, whereas yam chips only showed lower infestation rates of 59.5 and 19.1% for P. truncatus and C. quadricollis, respectively, at the end of storage in 2003-2004. During the 2004-2005 season after 3 mo of storage infestation rate in yam chips was 66 and 24% in NGS and 100 and 0% in SS for P. truncatus and C. quadricollis, respectively, showing that insect infestation levels vary significantly with commodity, year, and fluctuate during the storage season.10aSitophilus zeamais1 aGnonlonfin, G., J. B.1 aHell, K.1 aSiame, A., B.1 aFandohan, P.  uhttps://weevil.myspecies.info/infestation-and-population-dynamics-insects-stored-cassava-and-yams-chips-benin-west-africa