First Study of Host-Plant Preferences of<i>Sinopla perpunctatus</i>(HEMIPTERA: Acanthosomatidae), a Stink Bug from the Andean-Patagonic Forest

Pietrantuono, Ana Laura; Fernández-Arhex, Valeria; Bruzzone, Octavio Augusto

doi:10.1653/024.097.0226

Cited by 10 publications

(14 citation statements)

References 18 publications

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“…Therefore, in addition to developing a theoretical framework for the understanding of the insects inhabiting the native forest, this information also provides a starting point for phytosanitary care and the conservation of systems containing native species (Schowalter ; Altmann ; Pietrantuono et al . ).…”

Section: Discussionmentioning

confidence: 97%

“…; Pietrantuono et al . ). Such studies (common in biological control trials) contribute to understanding in a variety of different ways by providing knowledge regarding the ecology and natural history of native phytophagous insects and information that can be used for the development of conservation plans and even for the silvicultural management of different species of Nothofagaceae.…”

Section: Introductionmentioning

confidence: 97%

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The role of leaf cellulose content in determining host plant preferences of three defoliating insects present in the Andean‐Patagonian forest

2016

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Phytophagous insects choose their feeding resources according to their own requirements in addition to properties of the host plants, such as biomechanical defences. The feeding preferences of the native folivorous insects of the Andean-Patagonian forest (Argentina) have rarely been studied. These environments present a wide diversity and abundance of insects associated with trees of the Nothofagus and Lophozonia (Nothofagaceae) genera, which represent the main tree species of the forests of the southern hemisphere. In particular, Lophozonia alpina and Lophozonia obliqua are of great interest because they have a wide distribution, a high capacity for hybridization and exhibit great phenotypic plasticity. This versatility causes substantial variation in the biomechanical properties of leaves, affecting the feeding preferences of insects. The purpose of this work was to study the food selection behaviour of three leaf-chewing insects (Polydrusus nothofagii, Polydrusus roseaus (Coleoptera: Curculionidae) and Perzelia arda (Lepidoptera: Oecophoridae)) associated with L. alpina and L. obliqua as host plants. Based on their choices, our aim was to determine a preference scale for each insect species and the variables on which these preferences were based. Therefore, we selected trees of L. alpina and L. obliqua, measured several properties such as cellulose content and recorded which leaves were eaten. As a result, we determined that the three species of insects feed on both host plants but prefer the leaves of L. obliqua, with cellulose content being the main determining factor for their decisions. However, in the case of P. arda, there was a positive relationship between cellulose and host plant preference, whereas there was an opposite relationship for the weevils. We conclude that during feeding selection, there are some properties of the leaves that have a more important role than others and that the same property does not exert the same behavioural response in all folivorous insects.

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Section: Discussionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 97%

The role of leaf cellulose content in determining host plant preferences of three defoliating insects present in the Andean‐Patagonian forest

2016

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“…On the other hand, when laboratory preference tests were performed on native phytophagous insects by offering to choose between hosts or habitats covered with volcanic ash the results were mixed: Pietrantuono et al . () found no effect of the ash in the host preference test of a shield bug ( Sinopla perpunctata ), but in Pietrantuono et al . (unpublished data), leafminers avoided volcanic ash as a pupation site.…”

Section: Resultsmentioning

confidence: 94%

“…Several studies have demonstrated that susceptibility of insects to ash produced a decrease in population level (Akre, 1980;Akre et al, 1981;Shanks & Chase, 1981;Masciocchi et al, 2013), and that the life-expectancy of insects forced to ash exposure was reduced both in exotic (Buteler et al, 2011), and native species (Fernández-Arhex et al, 2013. On the other hand, when laboratory preference tests were performed on native phytophagous insects by offering to choose between hosts or habitats covered with volcanic ash the results were mixed: Pietrantuono et al (2014) found no effect of the ash in the host preference test of a shield bug (Sinopla perpunctata), but in Pietrantuono et al (unpublished data), leafminers avoided volcanic ash as a pupation site. Contrary to the case of exotic pests such as Vespula spp.…”

Section: Resultsmentioning

confidence: 99%

Cumulative effects of volcanic ash on the food preferences of two Orthopteran species

2016

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Inert dusts are an early form of insecticide which is still in use. One of the most common inert dusts is volcanic ash. In order to study the reaction of rangeland grasshoppers, Dichroplus vittigerum (Acrididae) and a katydid, Burgilis mendosensis (Phaneropteridae), to the presence of volcanic ash in their food sources and how this reaction changed as a function of time, we conducted paired preference tests between clean leaves of their preferred host plant and leaves exposed to volcanic ash of different grain size. The behavioral response was measured as the rating on the Thurstonian preference scale of leaves with ash in relation to clean leaves. The results showed that the avoidance of volcanic ash increased as a function of time in both species. Both species studied are occasionally exposed to volcanic activity, and come from an area in which a volcanic eruption had recently occurred. As their populations did not decrease after the ash fall, we propose that some behavioral responses such as avoidance of places with ash, works as tolerance mechanism to inert dusts exposure.

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“…First, we performed a Wilcoxon matched pair test (Bonferroni corrected) to determine whether there were differences between treatments and second we developed a model using a Bayesian approach to establish a scale of preferences between stimuli. This procedure provides a more straightforward way to determine the degree of attraction between stimuli and it is widely used by ecologists in animal behaviour studies (Ellison, 2004; McNamara et al , 2006; Valone, 2006; Pereira et al , 2013; Pietrantuono et al , 2014, 2015, 2017).…”

Section: Methodsmentioning

confidence: 99%

Foraging behaviour of the exotic waspVespula germanica(Hymenoptera: Vespidae) on a native caterpillar defoliator

Pietrantuono

Moreyra

Lozada

2017

Bull. Entomol. Res.

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Vespula germanica is a social wasp and an opportunistic predator. While foraging, these wasps learn and integrate different kinds of cues. They have successfully invaded many parts of the world, including native Nothofagus and Lophozonia forests located in the Andean-Patagonian region, where they forage on native arthropods. Perzelia arda, a lepidopteron defoliator of Lophozonia obliqua, uses the foliage to hide in and feed on. The purpose of this work is to study whether V. germanica use olfactory cues when foraging on P. arda. To do this, we used a Y-tube olfactometer and established three treatments to compare pairs of all combinations of stimuli (larvae, leaves with larval traces, and leaves without larval traces) and controls. Data were analysed via two developed models that showed decisions made by V. germanica and allowed to establish a scale of preferences between the stimuli. The analysis demonstrates that V. germanica wasps choose P. arda as larval prey and are capable of discriminating between the offered stimuli (deviance information criterion (DIC) null model = 873.97; DIC simple model = 84.5, n = 152). According to the preference scale, V. germanica preferred leaves with traces of larvae, suggesting its ability to associate these traces with the presence of the prey. This may be because, under natural conditions, larvae are never exposed outside their shelters of leaves and therefore V. germanica uses indirect signals. The presence of V. germanica foraging on P. arda highlights the flexible foraging behaviour of this wasp which may also act as a positive biological control, reducing lepidopteran populations.

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First Study of Host-Plant Preferences ofSinopla perpunctatus(HEMIPTERA: Acanthosomatidae), a Stink Bug from the Andean-Patagonic Forest

Abstract: BioOne Complete (complete.BioOne.org) is a full-text database of 200 subscribed and open-access titles in the biological, ecological, and environmental sciences published by nonprofit societies, associations, museums, institutions, and presses.

Cited by 10 publications

References 18 publications

The role of leaf cellulose content in determining host plant preferences of three defoliating insects present in the Andean‐Patagonian forest

The role of leaf cellulose content in determining host plant preferences of three defoliating insects present in the Andean‐Patagonian forest

Cumulative effects of volcanic ash on the food preferences of two Orthopteran species

Foraging behaviour of the exotic waspVespula germanica(Hymenoptera: Vespidae) on a native caterpillar defoliator

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