&lt;em&gt;Alabama argillacea&lt;/em&gt; (Hübner, 1818) (Lepidoptera, Noctuidae) e &lt;em&gt;Podisus nigrispinus&lt;/em&gt; (Dallas, 1851) (Hemiptera, Pentatomidae) em genótipos de algodoeiro: preferência para oviposição e capacidade predatória

Santos, Terezinha Monteiro dos; Boiça, Arlindo Leal

doi:10.4025/actasciagron.v24i0.2377

Cited by 3 publications

(2 citation statements)

References 10 publications

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“…Throughout the adult stage, P. nigrispinus was found to consume on average 2.3–2.5 Tuta absoluta (Meyrick) larvae per day; these larvae are approximately the same size as those of P. xylostella (Vivan et al., ). Moreover, P. nigrispinus consumption of Alabama argillacea (Hübner) larvae, which are much larger than the fourth instars of P. xylostella , varies from 1 to 1.8 larvae per day (Santos & Boiça Júnior, ). Indeed, prey consumption appears to depend on the predator to prey size ratio: the higher this ratio, the higher the consumption.…”

Section: Discussionmentioning

confidence: 99%

Relationship between predation by Podisus nigrispinus and developmental phase and density of its prey, Plutella xylostella

Vacari¹,

Bortoli²,

Torres

2012

Entomologia Exp Applicata

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This study evaluated the predation by Podisus nigrispinus (Dallas) (Hemiptera: Pentatomidae) at various densities of larvae and pupae of the pest Plutella xylostella (L.) (Lepidoptera: Plutellidae). We tested predator behavior of female P. nigrispinus at six experimental densities (1, 5, 10, 15, 20, or 25 prey items in a 1‐l transparent plastic container, replicated 15 times for each density) of both the fourth instar and pupae of P. xylostella. The number of prey consumed was monitored every 15 min for 12 h and was subsequently monitored at 24 h. Podisus nigrispinus females were weighed before and after the experiments to determine the effect of different densities of prey on their weight gain. Female predators had a Type‐II functional response, with attack rate estimated at 1.387 and 0.260 and a handling time of 0.091 and 0.183 h−1 for larvae and pupae, respectively. Podisus nigrispinus consumed on average 10.9 larvae or 5.5 pupae in 24 h. Despite the similarity of the response type, P. nigrispinus preferred to feed on larvae, rather than on pupae.

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Section: Discussionmentioning

confidence: 99%

Relationship between predation by Podisus nigrispinus and developmental phase and density of its prey, Plutella xylostella

Vacari¹,

Bortoli²,

Torres

2012

Entomologia Exp Applicata

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“…Secondary plant compounds, some of which can be herbivoreinduced, often toxic to non-adapted herbivores (Karban & Baldwin, 1997;Walling, 2000;Schoonhoven et al, 2005;Arimura et al, 2009), may be used by adapted specialist herbivores for host plant recognition (Bolder et al, 1997;Addesso & McAuslane, 2009;Szendrei et al, 2009;Addesso et al, 2011;Magalhães et al, 2012). For instance, the cotton plant is rich in gossypol, which is associated with plant defense to herbivory; however, specialist herbivores such as the noctuid Alabama argilacea (H€ ubner) are adapted to this compound (Santos & Boic ßa Jr, 2002). Meanwhile, non-specialist herbivores such as the noctuid Helicoverpa zea (Boddie) are negatively affected by gossypol (Stipanovic et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Interaction of Anthonomus grandis and cotton genotypes: biological and behavioral responses

Silva

Silva-Torres

Moraes

et al. 2015

Entomologia Exp Applicata

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The boll weevil, Anthonomus grandisBoheman (Coleoptera: Curculionidae), is a key pest of cotton, Gossypium hirsutumL. (Malvaceae). Knowledge about boll weevil feeding and oviposition behavior and its response to plant volatiles can underpin our understanding of host plant resistance, and contribute to improved monitoring and mass capture of this pest. Boll weevil oviposition preference and immature development in four cotton genotypes (CNPA TB90, TB85, TB15, and BRS Rubi) were investigated in the laboratory and greenhouse. Volatile organic compounds (VOCs) produced by TB90 and Rubi genotypes were obtained from herbivore‐damaged and undamaged control plants at two phenological stages – vegetative (prior to squaring) and reproductive (during squaring) – and four collection times – 24, 48, 72, and 96 h following herbivore damage. The boll weevil exhibited similar feeding and oviposition behavior across the four tested cotton genotypes. The chemical profiles of herbivore‐damaged plants of both genotypes across the two phenological stages were qualitatively similar, but differed in the amount of volatiles produced. Boll weevil response to VOC extracts was studied using a Y‐tube olfactometer. The boll weevil exhibited similar feeding and oviposition behavior at the four tested cotton genotypes, although delayed development and production of smaller adults was found when fed TB85. The chemical profile of herbivore‐damaged plants of both genotypes at the two phenological stages and time periods (24–96 h) was similar qualitatively, with 30 identified compounds, but differed in the amount of volatiles produced. Additionally, boll weevil olfactory response was positive to herbivory‐induced volatiles. The results help to understand the interaction between A. grandis and cotton plants, and why it is difficult to obtain cotton genotypes possessing constitutive resistance to this pest.

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Histopathology and ultrastructure of midgut of Alabama argillacea (Hübner) (Lepidoptera: Noctuidae) fed Bt-cotton

Sousa

Santos

Wanderley‐Teixeira

et al. 2010

Journal of Insect Physiology

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The interaction of Cry toxins from Bacillus thuringiensis in the midgut of some insect larvae determines their efficacies as insecticides, due to the expression and availability of sites of action of the toxin in the midgut. Researches point out cases of resistance to Cry toxin due to alterations in the binding sites in columnar cell membrane. We analyzed the effects of Cry1Ac toxin expressed by Bt-cotton plants on Alabama argillacea midgut morphophysiology clarifying in levels of morphological and ultrastructural. Larvae in the 4th instar of A. argillacea after 20 min from ingesting Bt-cotton leaves expressing 0.183 ng of Cry1Ac exhibited ultrastructural and morphological modifications in the columnar cells with significant changes in the mitochondrial polymorphism, cytoplasmic vacuolization, microvillus and basal labyrinth. Expressive morphological alterations were also observed in the goblet cells indicating that the columnar cells are not the only target of the Cry1Ac toxin. The regenerative cells did not modify their structures and exhibited decrease in regeneration capacity. In conclusion, the ingestion of 0.183 ± 0.077 ng of Cry1Ac was enough to promote alterations in the columnar and goblet cells, besides reducing significantly the number of regenerative cells, which may have contributed to larval death. Nevertheless, further studies are necessary to determine the true cause of death.

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<em>Alabama argillacea</em> (Hübner, 1818) (Lepidoptera, Noctuidae) e <em>Podisus nigrispinus</em> (Dallas, 1851) (Hemiptera, Pentatomidae) em genótipos de algodoeiro: preferência para oviposição e capacidade predatória

Cited by 3 publications

References 10 publications

Relationship between predation by Podisus nigrispinus and developmental phase and density of its prey, Plutella xylostella

Relationship between predation by Podisus nigrispinus and developmental phase and density of its prey, Plutella xylostella

Interaction of Anthonomus grandis and cotton genotypes: biological and behavioral responses

Histopathology and ultrastructure of midgut of Alabama argillacea (Hübner) (Lepidoptera: Noctuidae) fed Bt-cotton

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