Identification of Predatory and Parasitoid Insect Species Associated with Melanaphis sacchari (Hemiptera: Aphididae), a Sorghum Pest in Nuevo León, Mexico

Jaimes-Orduña, Jessica; Tamez‐Guerra, Patricia; Závala-García, Francisco; Pérez-González, Orquídea

doi:10.1653/024.103.0427

Cited by 4 publications

(1 citation statement)

References 8 publications

(6 reference statements)

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“…The phylogenetic tree of six 5-HTR proteins was constructed using the adjacency method of MEGA 7 ( Figure 1 ). Melanaphis sacchari , a Hemiptera insect [ 19 ], was used as an outgroup. 5-HTR 2A and 5-HTR 2B of Drosophila melanogaster were converted to primitive 5-HTR.…”

Section: Resultsmentioning

confidence: 99%

Deletion of the Serotonin Receptor 7 Gene Changed the Development and Behavior of the Mosquito, Aedes aegypti

Zhang

et al. 2022

Insects

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Serotonin (5-HT) plays a vital role in many physiological processes in insects, regulating physiological activities such as growth and movement through multiple 5-HT receptors (5-HTRs), which were potential targets for some new insecticides. However, the specific function of individual 5-HTRs in Ae. aegypti is still unclear. In this study, we investigated the function of the 5-HT7A receptor during Ae. aegypti development. 5-HTR7A transcripts were detected at all stages of development by real-time PCR. The results indicated that the gene expression was highest in the limbs (p < 0.01). We also generated 5-HTR7A mutant mosquitoes using CRISPR-mediated gene editing. The mutants had an abnormal phenotype at the larval stage, including an aberrant head-to-chest ratio and decreased motor activity. The mutant pupae developed abnormally, and most died (56.67%) (p < 0.0001). Using external stimuli to larvae and pupae with abnormal phenotypes, we found the mutant G1 and G2 generations responded to external stimuli in a longer time than the wild-type (WT) mosquitoes, and most of the mutants were 2 to 3 s slower than the WTs to respond to external stimuli (p < 0.01). Due to higher mortality, mutant larvae and pupae had fewer numbers than the WTs. The egg hatching rate of mutant G1 and G2 generations was lower than that of the WTs (p < 0.01). The expression level of 5-HTR7A in the mutants decreased by about 65% compared with the control group using real-time PCR (p < 0.05). In all, the 5-HT7A receptor plays an important role in the metamorphosis, development and motor function of Aedes aegypti.

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Section: Resultsmentioning

confidence: 99%

Deletion of the Serotonin Receptor 7 Gene Changed the Development and Behavior of the Mosquito, Aedes aegypti

Zhang

et al. 2022

Insects

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A Review of Biological Control One Decade After the Sorghum Aphid (Melanaphis sorghi) Outbreak

Toledo-Hernández,

Peña-Chora,

Mancilla-Dorantes

et al. 2024

Plants

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Melanaphis sorghi is a pest that is native to Africa but is now distributed worldwide. In 2013, its destructive capacity was demonstrated when it devastated sorghum crops in the United States and Mexico, making it a new pest of economic importance in North America. At the time, the phytosanitary authorities of both countries recommended the use of pesticides to control the outbreak, and biological control products for the management of this pest were not known. In response to the outbreak of M. sorghi in North America, several field studies have been performed in the last decade on sorghum crops in the USA and Mexico. Works have focused on assessing resistant sorghum hybrids, pesticide use, and recruitment of associated aphid predators and entomopathogens for natural control of M. sorghi populations. The objective of this review is to compile the information that has been generated in the past decade about indigenous enemies affecting M. sorghi naturally in the field, as well as the search for biological control alternatives and evaluations of interactive effects of resistant sorghum hybrids, pesticides, and natural enemies. To date, different predators, parasitoids, fungi, and bacteria have been evaluated and in many cases found to affect M. sorghi populations in sorghum agroecosystems or laboratory bioassays, and the use of resistant sorghum varieties and pesticides did not have clear toxic effects on natural enemy populations. Many of the macroorganisms and microorganisms that have been evaluated as potential biological controls have shown potential as alternatives to synthetic pesticides for keeping M. sorghi population densities below economic damage thresholds and are compatible with integrated management of sorghum aphids. While most tests of these biological alternatives have shown that they have aphidicidal potential against sorghum aphids, it is crucial to take into account that their effectiveness in the field depends on a number of abiotic and biotic factors, including soil texture, temperature, humidity, and natural enemies.

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First Records of Lysiphlebus fabarum and L. fritzmulleri1 in Mexico, and Impact of Insecticides on Parasitism of Melanaphis sacchari2 on Sorghum

Cortez-Mondaca

Rodríguez-del-Bosque²,

Valenzuela-Hernández

et al. 2021

Southwestern Entomologist

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Identification of Predatory and Parasitoid Insect Species Associated with Melanaphis sacchari (Hemiptera: Aphididae), a Sorghum Pest in Nuevo León, Mexico

Cited by 4 publications

References 8 publications

Deletion of the Serotonin Receptor 7 Gene Changed the Development and Behavior of the Mosquito, Aedes aegypti

Deletion of the Serotonin Receptor 7 Gene Changed the Development and Behavior of the Mosquito, Aedes aegypti

A Review of Biological Control One Decade After the Sorghum Aphid (Melanaphis sorghi) Outbreak

First Records of Lysiphlebus fabarum and L. fritzmulleri1 in Mexico, and Impact of Insecticides on Parasitism of Melanaphis sacchari2 on Sorghum

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