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Mostrando ítems 1-15 de 15
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Cumulative effects of volcanic ash on the food preferences of 2 Orthopteran species
Fernandez Arhex, Valeria Cristina; Amadio, Maria Emilia; Bruzzone, Octavio Augusto (2017)Los polvos inertes son una forma temprana de insecticida que todavía está en uso. Uno de los polvos inertes más comunes es la ceniza volcánica. Con el fin de estudiar la reacción de saltamontes de pastizales, Dichroplus ... -
Effect of plant nutritional traits on the diet of grasshoppers in a wetland of Northern Patagonia
Amadio, María Emilia; Pietrantuono, Ana Laura; Lozada, Mariana; Fernandez Arhex, Valeria Cristina (Taylor & Francis, 2020-05)Dichroplus maculipennis is one of the most damaging grasshoppers of wetlands. We investigated their feeding behavior in relation to the most abundant plants of Patagonian wetlands. Results showed that D. maculipennis was ... -
Effect of vegetable oils as Phagostimulants in adults of Dichroplus vittigerum (Orthoptera: Acrididae)
Sepúlveda, Luciana Vanesa; Pietrantuono, Ana Laura; Buteler, Micaela; Fernandez Arhex, Valeria Cristina (Entomological Society of America, 2019-12)Several species of grasshoppers are attracted to vegetable oils. These oils have kairomonal properties mainly due to the presence of linolenic and linoleic fatty acids. This study aimed to determine whether the odors of ... -
Effect of volcanic ash over Orthoptera survival in Patagonia
Fernandez Arhex, Valeria Cristina; Amadio, Maria Emilia; Enriquez, Andrea Soledad; Pietrantuono, Ana Laura; Becker, Guillermo Fernando; Bruzzone, Octavio Augusto (2015-04)The aim of this work was to evaluate the ash toxicity from the Puyehue-Cordón Caulle volcanic complex on the survival of two Orthopteran species: the grasshoper Dichroplus vittigerum and the green locust Brugilis sp. Two ... -
First study of host-plant preferences of Sinopla perpunctatus (Hemiptera: Acanthosomatidae), a stink bug from the Andean-Patagonic forest
Pietrantuono, Ana Laura; Fernandez Arhex, Valeria Cristina; Bruzzone, Octavio Augusto (Florida Entomological Society, 2014-06)Host plants of phytophagous insects are not equally attractive. The aim of this study was to evaluate the host-plant behavior of Sinopla perpunctatus Signoret (Hemiptera: Acanthosomatidae) and determine which parameters ... -
Food and Host Searching Decisions Made by Ibalia leucospoides (Hymenoptera: Ibaliidae), a Parasitoid of Sirex noctilio (Hymenoptera:Siricidae)
Pietrantuono, Ana Laura; Fernandez Arhex, Valeria Cristina; Jofre, Nelida Raquel; Corley, Juan Carlos (2012-07)During their adult life, parasitoids—insects that lay eggs in or on other arthropods eventually killing them- spend a significant proportion of their lifetime searching for hosts, this behavior will determine their future ... -
Honeybees generalize among pollen scents from plants flowering in the same seasonal period
Pietrantuono, Ana Laura; Requier, Fabrice; Fernandez Arhex, Valeria Cristina; Winter, Josefina; Huerta, Guillermo Jose; Guerrieri, Fernando (The Company of Biologists, 2019-11)When honey bees (Apis mellifera) feed on flowers, they extend their proboscis to absorb the nectar, i.e. they perform the proboscis extension response (PER). The presence of pollen and/or nectar can be associated with ... -
Host genetics determines food preferences of the moth Perzelia arda (Lepidoptera: Depressariidae)
Pietrantuono, Ana Laura; Pastorino, Mario Juan; Fernandez Arhex, Valeria Cristina; Corley, Juan Carlos; Marchelli, Paula (Wiley, 2021-12)Genetic variation among host plants can influence herbivore behaviour and consequently their abundance, performance and environmental impact. In the Andean- Patagonian forest, the arboreal vegetation is dominated by species ... -
Host plant choice and effect of temperature on feeding behaviour of Perzelia arda (Lepidoptera: Depressariidae), a leaf-tying larva, on Nothofagaceae from the Andean Patagonian forest
Capobianco, Julio Nahuel; Pietrantuono, Ana Laura; Aparicio, Alejandro Gabriel; Fernandez Arhex, Valeria Cristina (Wiley, 2021-08)Environmental temperature may cause changes in the physiology and feeding behaviour of herbivorous insects and, consequently, in the damage they can cause. In the Andean Patagonian forest, an eco-region dominated by trees ... -
Human-carnivore interaction in a context of socio-productive crisis: Assessing smallholder strategies for reducing predation in North-west Patagonia, Argentina
Gaspero, Pablo; Easdale, Marcos Horacio; Pereira, Javier Adolfo; Fernandez Arhex, Valeria Cristina; Von Thungen, Julieta (2018)Mitigating carnivore-livestock interaction is essential to ensuring the persistence of carnivores in landscapes dominated by livestock activity. Our aim was to explore, in the context of social and productive crises ... -
Neo-sex chromosomes in the Masculipennis species group (Dichroplus: Acrididae, Melanoplinae) : the cases of D. masculipennis and D. vittigerum
Castillo, Elio Rodrigo Daniel; Taffarel, Alberto; Mariottini, Yanina; Fernandez Arhex, Valeria Cristina; Marti, Dardo Andrea; Bidau, Claudio Juan (2016)Los saltamontes de melanoplina de América del Sur muestran un número desproporcionado de cariotipos derivados, incluyendo muchos casos de sistemas cromosómicos neo-sexuales. Esto es especialmente cierto para el género ... -
Polistes dominula (Hymenoptera: Vespidae) paper wasps detect native grasshoppers using olfactory cues
Moreyra, Sabrina; Lozada, Mariana; Fernandez Arhex, Valeria Cristina; Pietrantuono, Ana Laura (Wiley, 2023-10)Polistes dominula is an invasive social wasp that preys on the grasshopper Dichroplus elongatus, which constitutes a potential agricultural pest in Northwest Patagonia. This grasshopper feeds on a wide variety of plants, ... -
The role of leaf cellulose content in determining host plant preferences of three defoliating insects present in the Andean-Patagonian forest
Pietrantuono, Ana Laura; Bruzzone, Octavio Augusto; Fernandez Arhex, Valeria Cristina (2016)Los insectos fitófagos eligen sus recursos alimenticios según sus propias necesidades además de las propiedades de las plantas huésped, como las defensas biomecánicas. Las preferencias alimentarias de los insectos folívoros ... -
Substrates Preference for Pupation on Sawfly Notofenusa surosa (Hymenoptera: Tenthredinidae)
Pietrantuono, Ana Laura; Enriquez, Andrea Soledad; Fernandez Arhex, Valeria Cristina; Bruzzone, Octavio Augusto (Springer, 2015-05)The choices made by insects at different stages of their life cycle are critical for the individual and progeny success. In the case of leaf-miners, during larval development they are not able to make choices until the ... -
The effects of volcanic ash from Puyehue-Caulle range eruption on the survival of Dichroplus vittigerum (Orthoptera: Acrididae)
Fernandez Arhex, Valeria Cristina; Buteler, Micaela; Amadio, Maria Emilia; Enriquez, Andrea Soledad; Pietrantuono, Ana Laura; Stadler, Teodoro; Becker, Guillermo Fernando; Bruzzone, Octavio Augusto (2013-03)The aim of this work was to evaluate the toxicity of volcanic ash from the volcanic complex Puyehue-Caulle Range on the grasshopper, Dichroplus vittigerum, and compare the results with the effect of diatomaceous earth, an ...