Nymphal development of Podisus nigrispinus (Heteroptera, Pentatomidae) preying on larvae of Anticarsia gemmatalis (Lepidoptera, Noctuidae) fed with resistant and susceptible soybeans

Abstract

ABSTRACT. Nymphal development of the predator Podisus nigrispinus (Dallas) fed with a susceptible (UFV 16) or an insect resistant soybean genotype (IAC 17) and with larvae of the prey Anticarsia gemmatalis Hübner (Lepidoptera, Noctuidae) reared on these genotypes, was evaluated. Survival and duration of each instar and of total nymphal stage, besides weight of nymphs at the beginning of each instar and of adults of P. nigrispinus soon after emergence, were also evaluated. Nymphal survival of this predator was similar with both genotypes (64.41% for the UFV 16 and 72.88% for the IAC 17). Duration of second and fourth instars for nymphs that originated females, of fourth instar for those that originated males, of the nymphal period for males (20.21 and 17.94 days) and females (19.76 and 18.19 days) was longer on the IAC 17 than on the UFV 16. Weight of third instar nymphs (3.12 mg and 2.42 mg) for those that originated males and of fifth instar (26.20 mg and 23.86 mg) for those that originated females and female weight after emergence (65.76 mg and 58.68 mg) was lower with the IAC 17 than with the UFV 16. Sex ratio of P. nigrispinus was not affected by the resistant soybean IAC 17.

Broad range flavonoid profiling by LC/MS of soybean genotypes contrasting for resistance to Anticarsia gemmatalis (Lepidoptera: Noctuidae)

“…05 ) ( Fig 2 ) was observed. This result agrees with what is already described for these soybean genotypes [ 3 , 21 ], thus IAC 17 genotype was considered resistant and 105 AP genotype, susceptible to A . gemmatalis caterpillars.…”

“…The cultivar IAC 17 is a variety of early cycle [ 18 – 20 ], of genealogy D 72-9601-1 x ‘IAC 8’ and considered a resistant genotype to herbivory against A . gemmatalis , evaluated for caterpillars fed soybean leaves at greenhouse conditions [ 3 , 21 , 22 ]. The resistances were evaluated by the Kaplan-Meier method [ 23 ].…”

Sexual size dimorphism requires a corresponding sex difference in development time: a meta‐analysis in insects

“…; Matos Neto et al . ; Gillespie, Sanchez Sanchez & McGregor ; Panizzi, Schaefer & Hirose ; Zapata et al . , for original data).…”

Toxic effects of the neem oil (Azadirachta indica) formulation on the stink bug predator, Podisus nigrispinus (Heteroptera: Pentatomidae)

“…The stink bug predator, Podisus nigrispinus Dallas (Heteroptera: Pentatomidae) is a common zoophytophagous insect that is used in the biological control of agriculture and forest pests in the America 25 26 27 28 . The potential of P. nigrispinus in biological control has been reported for larvae of the defoliators Alabama argillacea Hübner, Anticarsia gemmatalis Hübner, Spodoptera exigua Hübner, and Trichoplusia ni Hübner (Lepidoptera: Noctuidae) 28 29 30 31 32 in cotton, tomato, soybean, and Eucalyptus plantations 27 33 34 35 . The compatibility between P. nigrispinus and pesticides such as chlorantraniliprole, deltamethrin, imidacloprid, methamidophos, spinosad and thiamethoxam has been successfully demonstrated 36 37 .…”