Nymph developmental time and survivorship, adult longevity, reproduction and body weight of Dichelops melacanthus (Dallas) feeding on natural and artificial diets

Resistance to Dichelops melacanthus (Hemiptera: Pentatomidae) in soybean genotypes of different maturity groups

“…It is possible that nymphal mortality occurs through the inclusion of other structures of soybean plants, but this poor performance may also be related to the poor nutritional quality of soybean for D. melacanthus individuals. Panizzi et al (2007) reported a greater nymphal viability index of the green-belly stink bug when confined to reproductive structures of corn, compared to soybean and artificial diet. In addition, population surveys of the species of the soybean stinkbug complex indicate that D. melacanthus is less abundant in crops of this legume than are the species Euschistus heros (Fabr.…”

“…These deleterious effects were more pronounced in 'IAC 19;' 'Conquista'; PI 274454; PI 171451; 'IAC 18;' 'IAC 17' and 'IAC 100' , in which longevity was less than 20 days, differing from most other genotypes. Panizzi et al (2007) reported an average longevity of 22.6 days for D. melacanthus using green soybean pods, while Chocorosqui and Panizzi (2008) reported 27.4 days using soybean seeds and the green pods of the cultivar 'Paraná' . The results of these authors are similar to those of the present study, in which the average longevity was 23.13 days.…”

Aspectos biológicos de Dichelops melacanthus em três temperaturas, alimentados com grãos imaturos de milho 2B688Hx e 2B688

“…Adicionalmente, é importante enfatizar que essa condição poderá alterar a distribuição geográfica da praga, com migração para regiões onde Tabela 2 -Influência da temperatura sobre o peso de adultos, número de ovos e viabilidade de ovos de Dichelops melacanthus alimentado com milho Bt 2B688Hx e não Bt 2B688. PANIZZI et al (2007).…”

Development of Dichelops melacanthus and its egg parasitoid Telenomus podisi reared on Bt-soybean MON 87701 x MON 89788 and its near conventional isoline under different temperatures

“…Similar studies have also indicated a high mortality of D. melacanthus when only fed with soybean pods (Panizzi et al 2007, Chocorosqui andPanizzi 2008), achieving mortality rates of around 63% (Chocorosqui and Panizzi 2008). This high mortality is observed even when the insect feeds on other food sources, such as an artifi cial diet (Panizzi et al 2007) or seeds of wheat or maize seedlings (Chocorosqui and Panizzi 2008). Therefore, the survival of D. melacanthus in nature is not guaranteed by only one food source, but probably by a diversity of host plants (Silva et al 2013), which may explain the current status of this pest, which is still of secondary importance in soybeans.…”