Fluctuación Poblacional de Melanaphis sacchari (Zehntner)1 e Identificación de Sus Depredadores en Sorgo con Manejo Tradicional en Puebla, México

Fortoul-Díaz, Jazmín Verónica; Peña, Adriana; Lomelí-Flores, J. Refugio; Hernández-Salgado, José Hilario; Magaña, Andrés Pérez

doi:10.3958/059.045.0223

Cited by 2 publications

(1 citation statement)

References 15 publications

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“…The combined action of parasitoids and predators could contribute to the reduction of population densities of R. maidis in maize. The biological control of aphids is exerted by numerous parasitoids belonging to the families Braconidae, Encyrtidae and other Chalcidoidea (Bañol et al, 2017;Zamora-Mejías & Hanson, 2017) as well as predators of the families Coccinellidae and Syrphidae are present in most ecosystems, both agricultural and urban (Amorós-Jiménez & Marcos-García, 2020;Fortoul-Diaz et al, 2020). Hyperparasitoids have been pointed out for causing adverse effects in classical biological control programs, but hyperparasitoids cannot be eliminated from food webs (Tougeron & Tena, 2019).…”

Section: Resultsmentioning

confidence: 99%

Trophic networks associated with the aphid, Rhopalosiphum maidis (Fitch) (Hemiptera: Aphididae) in a cornfield, Manabí, Ecuador

Centeno-Parrales

Chirinos²,

Kondo³

2022

Sci. agropecu.

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The corn leaf aphid is considered an important pest associated with maize. This study aimed to discover the trophic associations around Rhopalosiphum maidis in Manabí, Ecuador. Maize leaves were sampled to determine the numbers of parasitized aphids, and the identities of predators and parasitoids. Nine taxa of natural enemies were detected: the primary parasitoid was Lysiphlebus testaceipes Cresson, 1880 (Hymenoptera: Braconidae); the hyperparasitoid Syrphophagus aphidivorus (Mayr, 1876) (Hymenoptera: Encyrtidae); the predatory hoverfly Ocyptamus dimidiatus (Fabricius, 1781) (Diptera: Syrphidae), four species of coccinellids, Cheilomenes sexmaculata (Fabricius, 1781), Cycloneda sanguinea (Linnaeus, 1763), Hippodamia convergens Guerin-Meneville, 1842 and Paraneda pallidula guticollis (Coleoptera: Coccinellidae) and an assassin bug, Zelus sp. (Hemiptera: Reduviidae). A parasitoid, Pachyneuron formosum Walker, 1833 (Hymenoptera: Pteromalidae) emerged from hoverfly pupae. This study reports the presence of the parasitoids S. aphidivorus and P. formosum in Ecuador for the first time. These results increase the knowledge of a four-trophic level relationship (host plant – pest – parasitoids, predators – hyperparasitoids) in a maize agroecosystem as a fundamental basis for biological control programs.

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Section: Resultsmentioning

confidence: 99%

Trophic networks associated with the aphid, Rhopalosiphum maidis (Fitch) (Hemiptera: Aphididae) in a cornfield, Manabí, Ecuador

Centeno-Parrales

Chirinos²,

Kondo³

2022

Sci. agropecu.

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Ladybird predators in natural and agricultural landscapes in Mexico: diversity and parasitism

Mendoza-Arroyo,

del-Val

2024

Arthropod-Plant Interactions

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Ladybirds (Coleoptera: Coccinellidae) are a significant predator group that plays a role in agricultural contexts. They serve as important biocontrol agents against several agricultural pests. However, there is limited information available about how ladybirds’ populations are regulated by their natural enemies and habitat perturbation. In this study, we evaluated ladybird communities associated with natural and managed areas during the agricultural cycle of 2018 (June–September). We identified seven ladybird species; the most abundant species were Hippodamia convergens (70% individuals) and Cycloneda sanguinea (20% individuals), followed by the exotic species Harmonia axyridis (3.33% individuals), while Paranaemia vittigera, Coleomegilla maculata, Brachiacantha sp., and Olla v-nigrum represented less than 3% each. Ladybirds were more abundant in agricultural fields than in natural habitats. We identified several natural enemies associated with the collected ladybirds, including parasitoids (Dinocampus coccinellae, Hymenoptera: Braconidae), ectoparasitic Acari (Coccipolipus sp., Podapolipidae), and nematodes (Mermithidae). However, none of the natural enemies affected more than 10% of the ladybirds, so natural enemies do not appear to be exerting substantial control over their populations. Our results corroborated that ladybirds can efficiently thrive in anthropogenic habitats in Mexico and therefore may represent good biocontrol agents for agriculture. It is important to consider the ecology of agriculturally important ladybirds in programs for integrated pest management. This includes factors contributing to the mortality of ladybirds, including their natural enemies.

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Fluctuación Poblacional de Melanaphis sacchari (Zehntner)1 e Identificación de Sus Depredadores en Sorgo con Manejo Tradicional en Puebla, México

Cited by 2 publications

References 15 publications

Trophic networks associated with the aphid, Rhopalosiphum maidis (Fitch) (Hemiptera: Aphididae) in a cornfield, Manabí, Ecuador

Trophic networks associated with the aphid, Rhopalosiphum maidis (Fitch) (Hemiptera: Aphididae) in a cornfield, Manabí, Ecuador

Ladybird predators in natural and agricultural landscapes in Mexico: diversity and parasitism

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