Potencial reprodutivo horário do predador de lagartas desfolhadoras do eucalipto: Podisus nigrispinus (Heteroptera: Pentatomidae)

Pires, Evaldo Martins; Pinto, Rosenilson; Lacerda, M. C.; Zanúncio, José Cola; Fialho, Maria do Carmo Queiroz

doi:10.1590/s0100-67622006000600020

Cited by 10 publications

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“…This might be because of the sexual maturation of the adults (Zanuncio et al, 1992) and to the time of the day at which the experiments were carried out (Pires et al, 2006). Moreover, the mating period allowed was four hours, which is longer than that observed in other studies.…”

Section: Discussionmentioning

confidence: 91%

“…The choice tests were assembled from 10:00 am because P. nigrispinus is known to have a higher mating frequency near midday (Pires et al, 2006). Females were placed at the end and males in the middle of the tray (Figure 1) with 30 replications, each with a tray with two different females and one male.…”

Section: Experiments 1: Choice Tests and Elaboration Of Ethogramsmentioning

confidence: 99%

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Lightweight males of Podisus nigrispinus (Heteroptera: Pentatomidae) neglect lightweight females due low reproductive fitness

et al. 2016

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Sexual choice by male stink bugs is important because females that experience food shortages lay fewer eggs with lower viability compared with well-fed females. In this study, we investigated whether Podisus nigrispinus (Dallas) (Heteroptera: Pentatomidae) males fed with a low-quality diet during its nymphal stage show selectivity for sexual partners resulting in high-quality progeny. Lightweight males and females were obtained from nymphs fed weekly with Tenebrio molitor L. (Coleoptera: Tenebrionidae) pupae. By contrast, heavyweight males and females were fed three times a week and received an extra nutritional source: cotton leaves, Gossypium hirsutum L. (Malvaceae). Lightweight males preferred to mate with heavy females (77.78 ± 14.69%), whereas heavyweight males did not discriminated between light or heavyweight females. Females mated with lightweight males showed similar levels of reproduction to those mated with heavyweight males. The results provide an indication of the importance of male and female body weight for sexual selection in Asopinae stink bugs.Keywords: body weight, reproductive success, stink bug, predation, sexual selection. Machos leves de Podisus nigrispinus (Heteroptera: Pentatomidae) negligenciam fêmeas leves devido ao baixo desempenho reprodutivo ResumoA seleção sexual por machos de percevejos é importante porque fêmeas que passaram por escassez alimentar poem poucos ovos com baixa viabilidade em comparação com fêmeas bem alimentadas. Nesse estudo, investigamos se machos de Podisus nigrispinus (Dallas) (Heteroptera: Pentatomidae) alimentados com dieta de baixa qualidade durante seu estágio ninfal apresenta seletividade por parceiras sexuais resultando em progênie de alta qualidade. Machos e fêmeas leves foram obtidos de ninfas alimentadas semanalmente com pupas de Tenebrio molitor L. (Coleoptera: Tenebrionidae). Em contraste, machos e fêmeas pesados foram alimentados três vezes por semana e receberam uma fonte nutricional extra: folhas de algodão, Gossypium hirsutum L. (Malvaceae). Machos leves preferiram acasalar com fêmeas pesadas (77,78 ± 14,69%), enquanto machos pesados não distinguiram fêmeas leves ou pesadas para acasalamento. Fêmeas que acasalaram com machos leves apresentaram níveis de reprodução semelhantes em comparação com aquelas acasaladas com machos pesados. Os resultados fornecem uma indicação da importância do peso corpóreo de machos e fêmeas para a seleção sexual em percevejos Asopinae.Palavras-chave: peso corpóreo, sucesso reprodutivo, percevejo, predação, seleção sexual.

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Section: Discussionmentioning

confidence: 91%

Section: Experiments 1: Choice Tests and Elaboration Of Ethogramsmentioning

confidence: 99%

Lightweight males of Podisus nigrispinus (Heteroptera: Pentatomidae) neglect lightweight females due low reproductive fitness

et al. 2016

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“…For Torres et al, (2009), Hemiptera has a large number of species that are predators, with Reduviidae among them, which are quite voracious and generalists. Pires et al (2006) stated that Hemiptera has wide fauna diversity, and many of their individuals are important agricultural pest predators. Therefore, Hemiptera is recommended for biological control programs.…”

Section: Resultsmentioning

confidence: 99%

Population survey of predatory insects in sugarcane in the municipality of União, Piauí state, Brazil, using light trap

Branco¹,

Silva²,

Portela³

et al. 2016

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“…Podisus nigrispinus predators are used for the biological control of defoliating larvae in eucalypt forests (PIRES et al, 2006(PIRES et al, , 2015SOARES et al, 2009b). Therefore, it is necessary to improve mass rearing techniques for this natural enemy for its release into areas with larval outbreaks (LACERDA et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

EGG STORAGE OF Podisus nigrispinus (HEMIPTERA: PENTATOMIDAE) PREDATORS AT LOW TEMPERATURES

et al. 2016

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-Podisus nigrispinus are bedbug predators that are used as biological control agents of defoliating larvae in eucalypt plantations. The mass rearing of natural enemies produces large numbers of insects, but the number of predators produced may not coincide with the timing of the outbreaks of pest populations in the field. The aim of this study was to evaluate the effects of different storage periods on the eggs of P. nigrispinus at low temperatures of 5, 13 and 15°C. The treatments consisted of periods of 5, 10, 15 and 20 days of storage of predator eggs at each temperature indicated. After the different periods of storage, the eggs were removed, and the egg viability, the survival and duration of nymphal instars and the sex ratio of emerged adults were evaluated. Egg storage at 5°C reduced the percentage of hatched eggs, while viability values close to 50% were observed for storage periods of up to 10 days at 13°C and up to 15 days at 15°C. For these treatments, the survival rates of nymphs were similar to those of the control. The different storage periods had no effect on the duration of the nymphal stage or the sex ratio of P. nigrispinus at any of the temperatures. Therefore, the storage temperature of 5°C caused the death of the majority of the embryos, while it is possible to store P. nigrispinus eggs up to 10 and 15 days at 13 and 15°C, respectively. Keywords: Biological control; Mass rearing; Cold storage. ARMAZENAMENTO DE OVOS DO PREDADOR Podisus nigrispinus (HEMIPTERA: PENTATOMIDAE) EM BAIXAS TEMPERATURASRESUMO -Podisus nigrispinus (Dallas) (Hemiptera: Pentatomidae) são percevejos predadores utilizados como agentes de controle biológico de lagartas desfolhadoras em florestas de eucalipto. Criações massais de inimigos naturais produzem grande número de insetos, mas o número de predadores produzidos pode não coincidir com a época de surtos populacionais de pragas no campo. O objetivo deste trabalho foi avaliar o efeito de diferentes períodos de armazenamento em ovos de P. nigrispinus em baixas temperaturas (5 °C, 13 °C e 15°C ). Os tratamentos consistiram dos períodos de armazenamento (cinco, 10, 15 e 20 dias) dos ovos do predador nas temperaturas indicadas. Após os períodos de armazenagem, os ovos foram retirados e avaliados os parâmetros: viabilidade dos ovos, sobrevivência e duração do estádio ninfal e razão sexual dos adultos emergidos. Os períodos de armazenamento de ovos a 5°C reduziram a porcentagem de ninfas eclodidas inviabilizando a maioria dos ovos. Enquanto valores de viabilidade próximos a 50% foram observados para os períodos de armazenamento de até 10 dias para 13 °C e 15 dias armazenados a 15 °C, com taxas de sobrevivência de ninfas, similares às do controle. Não houve efeito na duração do estágio ninfal e na razão sexual de P. nigrispinus nos tratamentos 878

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Potencial reprodutivo horário do predador de lagartas desfolhadoras do eucalipto: Podisus nigrispinus (Heteroptera: Pentatomidae)

Cited by 10 publications

References 10 publications

Lightweight males of Podisus nigrispinus (Heteroptera: Pentatomidae) neglect lightweight females due low reproductive fitness

Lightweight males of Podisus nigrispinus (Heteroptera: Pentatomidae) neglect lightweight females due low reproductive fitness

Population survey of predatory insects in sugarcane in the municipality of União, Piauí state, Brazil, using light trap

EGG STORAGE OF Podisus nigrispinus (HEMIPTERA: PENTATOMIDAE) PREDATORS AT LOW TEMPERATURES

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