Botanical pesticides may be an alternative to the use of synthetic insecticides against agricultu... more Botanical pesticides may be an alternative to the use of synthetic insecticides against agricultural pests and neem extracts have been successfully used against some insect pests. This study evaluated the effect of neem in biological and morpho-physiological parameters of the velvetbean caterpillar Anticarsia gemmatalis. The third instar larvae of A. gemmatalis were fed on artificial diet containing different concentrations of neem seed kernel extract (NSKE). The biological parameters were adversely affected after ingestion of the diet with neem extracts. Doses of more than 500 ppm of the NSKE in the diet caused 100 % mortality in the larvae of A. gemmatalis, whereas lower doses reduced food intake and reproductive capacity, and increased production of pupae with morphological deformities. The cells of the midgut epithelium of A. gemmatalis larvae showed swelling, basal membrane detachment and complete disruption after exposure to NSKE. In addition to the cytotoxicity effect observed in the fat body, the treatment reduced lipid and protein reserves. The NSKE negatively affected the physiological and biological parameters of A. gemmatalis.
Industrial Crops and Products - IND CROPS PRODUCTS, 2009
Extracts of 12 Asteraceae were tested on Spodoptera frugiperda (Lepidoptera: Noctuidae) and on th... more Extracts of 12 Asteraceae were tested on Spodoptera frugiperda (Lepidoptera: Noctuidae) and on their parasitoids Telenomus remus (Hymenoptera: Scelionidae) and Trichogramma pretiosum (Hymenoptera: Trichogrammatidae). The plants Lychnophora ericoides and Trichogonia villosa were toxic for 97.7±0.15% of one-day-old eggs of S. frugiperda and Lepidaploa lilacina for 72.0±2.50% for two-day-old eggs of this insect. Extracts of Vernonia holosenicea, Lychnophora ramosissima and Chromolaena chaseae had higher impact on S. frugiperda, while those of Eremanthus elaeagnus and L. ericoides were more selective to T. pretiosum and T. remus. Asteraceae extracts present potential for integrated pest management programs of S. frugiperda.
Page 1. COMUNIDADES DE LEPIDÓPTEROS NOTURNOS DESFOLHADORES DE EUCALIPTO EM TRÊS REGiÕES DO CERRAD... more Page 1. COMUNIDADES DE LEPIDÓPTEROS NOTURNOS DESFOLHADORES DE EUCALIPTO EM TRÊS REGiÕES DO CERRADO DE MINAS GERAIS Marcílio Fagundes 1 José Cola Zanuncio 2 Frederico Santos Lopes 3 Paulo De Marco Júnior 4 ABSTRACT. ...
Page 1. Pesq. agropec. bras., Brasília, v. 37, n. 5, p. 581-587, maio 2002 Comportamento de preda... more Page 1. Pesq. agropec. bras., Brasília, v. 37, n. 5, p. 581-587, maio 2002 Comportamento de predação e conversão alimentar 581 Comportamento de predação e conversão alimentar de Podisus nigrispinus sobre a traça-do-tomateiro(1) ...
Botanical pesticides may be an alternative to the use of synthetic insecticides against agricultu... more Botanical pesticides may be an alternative to the use of synthetic insecticides against agricultural pests and neem extracts have been successfully used against some insect pests. This study evaluated the effect of neem in biological and morpho-physiological parameters of the velvetbean caterpillar Anticarsia gemmatalis. The third instar larvae of A. gemmatalis were fed on artificial diet containing different concentrations of neem seed kernel extract (NSKE). The biological parameters were adversely affected after ingestion of the diet with neem extracts. Doses of more than 500 ppm of the NSKE in the diet caused 100 % mortality in the larvae of A. gemmatalis, whereas lower doses reduced food intake and reproductive capacity, and increased production of pupae with morphological deformities. The cells of the midgut epithelium of A. gemmatalis larvae showed swelling, basal membrane detachment and complete disruption after exposure to NSKE. In addition to the cytotoxicity effect observed in the fat body, the treatment reduced lipid and protein reserves. The NSKE negatively affected the physiological and biological parameters of A. gemmatalis.
Industrial Crops and Products - IND CROPS PRODUCTS, 2009
Extracts of 12 Asteraceae were tested on Spodoptera frugiperda (Lepidoptera: Noctuidae) and on th... more Extracts of 12 Asteraceae were tested on Spodoptera frugiperda (Lepidoptera: Noctuidae) and on their parasitoids Telenomus remus (Hymenoptera: Scelionidae) and Trichogramma pretiosum (Hymenoptera: Trichogrammatidae). The plants Lychnophora ericoides and Trichogonia villosa were toxic for 97.7±0.15% of one-day-old eggs of S. frugiperda and Lepidaploa lilacina for 72.0±2.50% for two-day-old eggs of this insect. Extracts of Vernonia holosenicea, Lychnophora ramosissima and Chromolaena chaseae had higher impact on S. frugiperda, while those of Eremanthus elaeagnus and L. ericoides were more selective to T. pretiosum and T. remus. Asteraceae extracts present potential for integrated pest management programs of S. frugiperda.
Page 1. COMUNIDADES DE LEPIDÓPTEROS NOTURNOS DESFOLHADORES DE EUCALIPTO EM TRÊS REGiÕES DO CERRAD... more Page 1. COMUNIDADES DE LEPIDÓPTEROS NOTURNOS DESFOLHADORES DE EUCALIPTO EM TRÊS REGiÕES DO CERRADO DE MINAS GERAIS Marcílio Fagundes 1 José Cola Zanuncio 2 Frederico Santos Lopes 3 Paulo De Marco Júnior 4 ABSTRACT. ...
Page 1. Pesq. agropec. bras., Brasília, v. 37, n. 5, p. 581-587, maio 2002 Comportamento de preda... more Page 1. Pesq. agropec. bras., Brasília, v. 37, n. 5, p. 581-587, maio 2002 Comportamento de predação e conversão alimentar 581 Comportamento de predação e conversão alimentar de Podisus nigrispinus sobre a traça-do-tomateiro(1) ...
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