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Ovary development, egg production and oviposition for mated and virgin females of the predator Podisus nigrispinus (Heteroptera: Pentatomidae) - doi: 10.4025/actasciagron.v33i4.6694 Agronomy
Soares, Marcus Alvaranga; Universidade Federal dos Vales do Jequitinhonha e Mucuri; Batista, Joana Darc; Universidade Federal de Viçosa; Zanuncio, José Cola; Universidade Federal de Viçosa; Lino Neto, José; Universidade Federal de Viçosa; Serrão, José Eduardo; Universidade Federal de Viçosa.
The Asopinae insects are generalist predators, and Podisus nigrispinus (Dallas) (Heteroptera: Pentatomidae) is the most studied species of this group in Brazil. The objective was to study ovarian development, egg production and oviposition of mated and virgin P. nigrispinus females. Five 24-hours-old females were dissected and the ovaries were analyzed. Fifteen females of this predator were mated (T1), and another fifteen were individualized without mating (T2). The ovaries of five females per treatment were dissected and mature and immature eggs were counted. Five virgin females of P. nigrispinus at twenty days old were also analyzed. Twenty-four-hours-old P. nigrispinus females had low ovary development without the evidence of oocyte production. The...
Tipo: Pesquisa de laboratório Palavras-chave: 5.01.02.02-8 biological control; Insect physiology; Oogenesis; Progeny; Reproduction Entomologia Agrícola biological control; Insect physiology; Oogenesis; Progeny; Reproduction.
Ano: 2011 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/6694
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Azadirachtin from the neem tree Azadirachta indica: its action against insects Anais da SEB
Mordue(Luntz),A. Jennifer; Nisbet,Alasdair J..
The neem tree has long been recognized for its unique properties both against insects and in improving human health. It is grown in most tropical and sub-tropical areas of the world for shade, reforestation and for the production of row material for natural insecticides and medicines. Azadirachtin, a complex tetranortriterpenoid limonoid from the neem seeds, is the main component responsible for the toxic effects in insects. Six international conferences on neem and a vast scientific literature report both the antifeedant and physiological effects of neem. This article reviews the behavioral and physiological properties of azadirachtin, including effects on insect reproduction, direct and "secondary" antifeedancy, and the physiological effects measured as...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Insecta; Botanical insecticide; Insect physiology.
Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0301-80592000000400001
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