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Browsing by Author "Pekas, Apostolos"

Now showing items 1-19 of 19

Ants affect the infestation levels but not the parasitism of honeydew and non-honeydew producing pests in citrus

Calabuig Gomar, Altea; García Mari, Ferran; Pekas, Apostolos (Cambridge University Press (CUP): STM Journals, 2014-08)

[EN] Ants act simultaneously as predators and as hemipteran mutualists, and thereby may affect the composition and population dynamics of a wide arthropod community. We conducted ant-exclusion experiments in order to ...
Ants impact the energy reserves of natural enemies through the shared honeydew exploitation

Calabuig Gomar, Altea; Tena Barreda, Alejandro; Wäkers, Felix L.; Lucia Fernandez-Arrojo; Plou, Francisco J.; García Mari, Ferran; Pekas, Apostolos (Wiley, 2015-12)

[EN] Ants, as well as many species of parasitoids and predators, rely on sugar-richfoodssuchashoneydewtofulfilltheirenergeticneeds.Thus,antsandnatural enemies may interact through the shared honeydew exploitation. ...
Ants in citrus: impact on the abundance, species richness, diversity and community structure of predators and parasitoids

Calabuig Gomar, Altea; García Mari, Ferran; Pekas, Apostolos (Elsevier Masson, 2015-12-25)

[EN] Although ants act as plant biotic defences, in agricultural ecosystems they are often associated with outbreaks of honeydew-producing pests mainly due to the protection they offer to the plant feeders in exchange for ...
Ants, pests and natural enemies in Mediterranean citrus. Ecological interactions and practical implications for biological control

Calabuig Gomar, Altea (Universitat Politècnica de València, 2016-07-24)

[EN] Ants constitute an important component of the citrus agroecosystem fauna acting simultaneously as predators and as hemipteran mutualists. Thus, ants in citrus are in the center of a complex food web affecting the ...
Association between ants (Hymenoptera: Formicidae) and the vine mealybug (Hemiptera: Pseudococcidae) in table-grape vineyards in Eastern Spain

Beltrà Ivars, Aleixandre; Navarro Campos, Cristina; Calabuig Gomar, Altea; Estopa, Luis; Wäckers, Felix; Pekas, Apostolos; Soto Sánchez, Antonia Isabel (John Wiley & Sons, 2017)

[EN] BACKGROUNDThe vine mealybug, Planococcus ficus (Signoret) (Hemiptera: Pseudococcidae) is a key pest of grapevine in the Mediterranean Basin. Some honeydew collecting ant species are known to increase mealybug populations ...
Attract and distract: Manipulation of a food-mediated protective mutualism enhances natural pest control

Wäckers, Felix L.; Sánchez Alberola, Jesús; García Mari, Ferran; Pekas, Apostolos (Elsevier, 2017)

[EN] Ants can act simultaneously as predators and as protectors of honeydew producing pests. As a result, their impact on plants can be both positive and negative. By guarding honeydew producers against their natural ...
Effect of mediterranean ants (Hymenoptera, Formicidae) on California Red Scale (Hemiptera, Diaspididae) populations in citrus orchards

Pekas, Apostolos; Tena Barreda, Alejandro; Aguilar Martí, Mª Amparo; García Mari, Ferran (Oxford University Press, 2010)

[EN] We conducted an ant-exclusion experiment in a citrus orchard to evaluate the overall impact of three ant species native in the Mediterranean, Pheidole pallidula (Nylander), Plagiolepis schmitzii Forel, and Lasius ...
Effect of the California red scale Aonidiella aurantii sex pheromone on the natural parasitism by Aphytis spp. in Mediterranean citrus

Pekas, Apostolos; Navarro-Llopis, Vicente; García Mari, Ferran; Primo Millo, Jaime; Vacas González, Sandra (Elsevier, 2015-11)

[EN] Mating disruption has proved successful against California red scale (CRS), Aonidiella aurantii Maskell (Hemiptera: Diaspididae) in Mediterranean citrus. Although mating disruption does not affect negatively the ...
Employing evolutionary theory to improve biological pest control: Causes of non-adaptive sex allocation behavior in parasitoid wasps and implications

Beltrà Ivars, Aleixandre; Pekas, Apostolos; Soto Sánchez, Antonia Isabel; Tena Barreda, Alejandro (Elsevier, 2014-11)

[EN] Models based on sex allocation theory predict that when the fitness gains from larger size differ between male and female offspring, mothers should produce the sex that will offer the greatest investment return. ...
Explorando el potencial de Trichoderma para la protección de amplio espectro contra plagas y enfermedades de plantas

Leite Montalvao, Ana Paula (Universitat Politècnica de València, 2018-11-07)

Los patógenos y las plagas de las plantas causan graves pérdidas en cultivos en todo el mundo. Aunque el control químico sigue siendo la herramienta más ampliamente utilizada, la demanda por métodos de control más sostenibles ...
Factors affecting the biological control of California red scale Aonidiella aurantii (Hemiptera: Diaspididae) by Aphytis (Hymenoptera: Aphelinidae) in eastern Spain citrus: host size, ant activity, and adult parasitoid food sources

Pekas, Apostolos (Universitat Politècnica de València, 2011-03-14)

California red scale (CRS), Aonidiella aurantii (Maskell) (Hemiptera: Diaspididae), one of the most important pests of citrus worldwide, began to cause damages in eastern Spain in 1986. The main biological control agents ...
Factors influencing citrus fruit scarring caused by Pezothrips kellyanus

Navarro Campos, Cristina; Pekas, Apostolos; Aguilar Martí, Mª Amparo; García Mari, Ferran (Springer Verlag (Germany), 2013-09)

[EN] Kelly s citrus thrips (KCT) Pezothrips kellyanus (Bagnall) (Thysanoptera: Thripidae) is a recently recorded cosmopolitan citrus pest, causing fruit scarring that results in downgrading of fruit. Due to the ...
Host size and spatiotemporal patterns mediate the coexistence of specialist parasitoids

Pekas, Apostolos; Tena Barreda, Alejandro; Harvey, J.A.; Garcia Marí, Ferran; Frago, Enric (Ecological Society of America, 2016-05)

[EN] Many insect parasitoids are highly specialized and thus develop on only one or a few related host species, yet some hosts are attacked by many different parasitoid species in nature. For this reason, they have been ...
Influence of host size on parasitism by Aphytis chrysomphali and A. melinus (Hymenoptera: Aphelinidae) in Mediterranean populations of California red scale Aonidiella aurantii (Hemiptera: Diaspididae)

Pekas, Apostolos; Aguilar Martí, Mª Amparo; Tena Barreda, Alejandro; García Mari, Ferran (Elsevier, 2010-11)

The ectoparasitoids Aphytis chrysomphali Mercet and A. melinus DeBach (Hymenoptera: Aphelinidae) are the principal natural enemies of California red scale (CRS) Aonidiella aurantii (Maskell) (Hemiptera: Dias-pididae) in ...
Provisioning of food supplements enhances the conservation of phytoseiid mites in citrus

Beltrà Ivars, Aleixandre; Calabuig Gomar, Altea; Navarro Campos, Cristina; Ramírez Soria, M.J.; Soto Sánchez, Antonia Isabel; García Mari, Ferran; Wäckers, Felix; Pekas, Apostolos (Elsevier, 2017)

[EN] Phytoseiid mites (Acari: Phytoseiidae) are amongst the most abundant and important predators in citrus. They range from specialist species feeding exclusively on spider mites to generalist species that can feed and ...
Soil-dwelling predatory mites in citrus: Their potential as natural enemies of thrips with special reference to Pezothrips kellyanus (Thysanoptera: Thripidae)

Navarro Campos, Cristina; Pekas, Apostolos; Moraza, M.L.; Aguilar Martí, Mª Amparo; García Mari, Ferran (Elsevier, 2012-11)

Free-living predatory mites (Acari) is one of the most abundant and species-rich group of arthropods in the soil, with a great potential for pest control. In the present study we examined the predatory mite fauna in the ...
Spatio-temporal patterns and interactions with honeydew-producing hemiptera of ants in a Mediterranean citrus orchard

Pekas, Apostolos; Tena Barreda, Alejandro; Aguilar Martí, Mª Amparo; García Mari, Ferran (Wiley-Blackwell, 2011)

1 The role of ants in the citrus agro-ecosystem is controversial and understanding their ecology may help to clarify their function. The present study determined the daily and seasonal foraging patterns, the spatial ...
Suministro de alimentos suplementarios para mejorar la eficacia de los agentes de control biológico

Damascena de Almeida Leandro, Maria Elisa (Universitat Politècnica de València, 2022-03-30)

[ES] La capacidad de un enemigo natural para sobrevivir y establecerse tras la introducción en un ecosistema dado, es un aspecto crucial de su éxito como agente de control biológico. Con el fin de potenciar las tasas de ...
The invasive spider mite Tetranychus evansi (Acari: Tetranychidae) alters community composition and host-plant use of native relatives

Ferragut Pérez, Francisco José; Garzón Luque, Eva; Pekas, Apostolos (Springer Verlag (Germany), 2013-07)

The tomato spider mite Tetranychus evansi Baker and Pritchard (Acari: Tetranychidae), is a worldwide pest of solanaceous crops that has recently invaded many parts of the world. In the present study we examined the ...