Population Development ofZabrotes subfasciatus(Coleoptera: Chrysomelidae) in Landrace Bean Varieties Occurring in Southwestern Amazonia

Abstract

The common bean, Phaseolus vulgaris (L.), is one of the most important sources of protein worldwide, and Latin America is one of the recognized centers of diversity of this species. However, storage of this product after harvest is not feasible because of bruchid attacks. This study determined the accumulated normalized rate of emergence and the daily emergence rate of Zabrotes subfasciatus (Boheman) (Coleoptera: Chrysomelidae:Bruchinae) in five landrace varieties of common bean (BRL 01, SNA 01, RDR 01, RBC 01, and RBC 13) that occurin southwestern Amazonia. These varieties were selected for this study because they are well-distributed throughout the Amazonian communities. Beans of each variety were infested with 50 unsexed adults, and the insects were removed 13 d after beginning the bioassays. The adult progeny obtained from the feeding substrate were counted and removed every other day after the first emergence, until the end of the emergence period. Differences were observed in the calculated rates of development; however, the time required for development and emergence of the insects was independent. Of the five varieties of bean investigated, we observed that the RDR 01, BRL 01, and SNA 01 cultivars are resistant to Z. subfasciatus; the results indicate that the use of these three varieties can reduce problems associated with bruchid attacks and enable storage of the product after harvesting.

Hermetic storage for control of common bean weevil, Acanthoscelides obtectus (Say)

“…beans (Padín et al, 2002;Caneppele et al, 2003). Given the destructive power of bruchids, many farmers sell their entire crop of beans immediately after harvest when the prices in the market are still low, and they do not store seeds for the next sowing season or personal (Schmale et al, 2006;Lopes et al, 2015). The hermetic storage of common beans is a tool for the effective control of pests, as the results have shown, and it is safer for human health and the environment (Carvalho et al, 2012;Navarro, 2012a,b).…”

“…The common bean Phaseolus vulgaris (L.) is one of the most commonly used vegetables in human nutrition worldwide and is one of the main sources of protein, particularly in developing countries (Jones et al, 2011;Lopes et al, 2015). However, attack by bruchids (Coleoptera: Chrysomelidae: Bruchinae) during storage compromises the quality and commercial value of beans.…”

Effects of Low Temperature on the Fatty Acid Compositions of Adult of Acanthoscelides obtectus (Say) (Coleoptera: Chrysomelidae)

“…The common bean Phaseolus vulgaris (L.) is one of the most commonly used vegetables in human nutrition worldwide and is of the main sources of protein, particularly in developing countries (Lopes et al, 2015). Bruchids encompass a group of approximately 1700 insect species (Johnson et al, 2004).…”

Emergence Rate of the Mexican Bean Weevil in Varieties of Beans From the Southwestern Amazon

“…These beans are a source of essential nutrients for human consumption and provides income to small farmers in developing countries (MUTANGI et al, 2015;JONES;ALEXANDER;LOWENBERG-DEBOER, 2017). In the Amazon region, native bean varieties are grown and stored on the farm until the following crop cycle (LOPES et al, 2016). Landrace varieties are considered an important genetic source for pest resistance because these varieties have a broader genetic base and a greater proportion of distinct genes directly related to their large genetic diversity (ASFAW; BLAIR; ALMEKINDERS, 2009;TIGIST et al, 2018).…”