Relationships among Melanaphis sacchari1, Its Predator Insect Communities, and Weather Conditions in Sorghum Crops at Colima, Mexico

Rodríguez-Vélez, José Manuel; Uribe-Mú, Claudia Aurora; Sarmiento-Cordero, Mariza Araceli; Rodríguez-Vélez, Beatriz; Cruz-Rodríguez, Juan Antonio; Contreras‐Ramos, Atilano; Huerta-Martínez, Francisco Martín; Arredondo-Bernal, Hugo C.

doi:10.3958/059.046.0104

Cited by 5 publications

(4 citation statements)

References 17 publications

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“…The parasitoid and predator species complex in the South region and two Great Plains regions did not change from those previously reported in central and south Texas ( 23 , 26 ) and overlapped and added to those observed in Kansas ( 22 ). A few additional braconid parasitoid species, such as Aphidius spp., and several additional species of coccinellids and syrphids were reported farther south in northeastern to westcentral Mexico ( 24 , 25 , 39 , 51 ). In the South E region, family-level taxa of predators reported in this study were consistent with those previously reported ( 38 , 52 ).…”

Section: Discussionmentioning

confidence: 99%

“…Lysiphlebus testaceipes (Cresson) (Hymenoptera: Braconidae) parasitized M. sorghi in northeastern Mexico ( 25 ), was infrequently observed parasitizing M. sorghi in Texas and Georgia ( 26 , 38 ), and was not observed parasitizing M. sorghi in Kansas ( 22 ). Coccinellids and selected other predator taxa were commonly reported from south Texas ( 26 ) and Mexico ( 39 ) but were observed sporadically in Georgia ( 38 ). Prior to the M. sorghi invasion, variability in abundance of the natural enemy complex and in corresponding cereal aphid suppression has been reported in wheat and barley across the Great Plains ( 29 , 30 ).…”

Section: Introductionmentioning

confidence: 99%

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Natural Enemies, Mediated by Landscape and Weather Conditions, Shape Response of the Sorghum Agroecosystem of North America to the Invasive Aphid Melanaphis sorghi

Brewer¹,

Elliott²,

Esquivel³

et al. 2022

Front. Insect Sci.

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The sorghum (Sorghum bicolor [L.]) agroecosystem of North America provided an opportunity to evaluate agroecosystem response to an invading insect herbivore, Melanaphis sorghi (Theobald) (sorghum aphid) (previously published as Melanaphis sacchari Zehntner) (Hemiptera: Aphididae) onto a widely planted crop that experiences a range of agro-landscape and weather conditions. Initial sorghum risk assessments after M. sorghi's invasion in the mid-2010s provided forecasts of range expansion and annual migration, which were based on aphid life history, extent of sorghum cultivation and susceptibility to M. sorghi, and weather (aphid-plant-weather [APW] risk scenario). A more comprehensive risk assessment proposed here brings top-down forces of M. sorghi-natural enemy interactions to the forefront as mediated by agro-landscape and weather conditions (aphid-enemy/landscape-weather mediated [AE/LW] risk scenario). A hypothesis of regional differences in aphids and natural enemies and sensitivity to agro-landscape and weather was tested using empirical data of insect, landscape, and weather data across 5 years and four regions (two in the U.S. Great Plains [South GP and North GP], one farther south (South), and one in the southeast U.S. [South E]). Natural enemies were widespread with two parasitoids and four coccinellid species common across regions, but regional variation in M. sorghi and natural enemy abundance was detected. The AE/LW risk scenario accounted for natural enemy abundance and activity that was highest in the South region, functioned well across agro-landscape and weather conditions, and was accompanied by average low M. sorghi abundance (~23 M. sorghi per leaf). Positive correlations of natural enemy-M. sorghi abundance also occurred in the South GP region where M. sorghi abundance was low (~20 M. sorghi per leaf), and selected natural enemy activity appeared to be mediated by landscape composition. Melanaphis sorghi abundance was highest in the South E region (~136 aphids/leaf) where natural enemy activity was low and influenced by weather. The AE/LW risk scenario appeared suited, and essential in the South region, in assessing risk on a regional scale, and sets the stage for further modeling to generate estimates of the degree of influence of natural enemies under varying agro-landscape and weather conditions considered in the AE/LW risk scenario. Broadly, these findings are relevant in understanding agroecosystem resilience and recommending supportive management inputs in response to insect invasions in context of natural enemy activity and varied environmental conditions.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Natural Enemies, Mediated by Landscape and Weather Conditions, Shape Response of the Sorghum Agroecosystem of North America to the Invasive Aphid Melanaphis sorghi

Brewer¹,

Elliott²,

Esquivel³

et al. 2022

Front. Insect Sci.

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“…Using the same multivariate technique, Park et al [ 47 ] analyzed the herbivory and discriminated sorghum genotypes not infested from those colonized by the aphid M. sacchari . Additionally, Rodríguez-Vélez et al [ 48 ] also succeeded in studying the behavior of M. sacchari under different environmental conditions, through principal component analysis and factor-variable correlation.…”

Section: Discussionmentioning

confidence: 99%

Effect of Sugarcane Cultivars Infected with Sugarcane Yellow Leaf Virus (ScYLV) on Feeding Behavior and Biological Performance of Melanaphis sacchari (Hemiptera: Aphididae)

Bertasello

Carmo-Sousa

Maluta

et al. 2021

Plants

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Sugarcane yellow leaf virus (ScYLV), Polerovirus, Luteoviridae, is one of the main viruses that infect sugarcane worldwide. The virus is transmitted by the aphid Melanaphis sacchari in a persistent, circulative manner. To better understand the interactions between ScYLV, sugarcane genotypes and M. sacchari, we explored the effect of sugarcane cultivars on the feeding behavior and biological performance of the vector. The number of nymphs, adults, winged, total number of aphids and dead aphids was assayed, and an electrical penetration graph (EPG) was used to monitor the stylet activities. Multivariate analysis showed changes in the vector’s behavior and biology on cultivars, identifying specific groups of resistance. In the cultivar 7569, only 5.5% of the insects were able to stay longer on sustained phloem ingestion, while in the other seven cultivars these values varied from 20% to 60%. M. sacchari showed low phloem activities in cultivars 7569 and Bio266. Overall, cultivar 7569 showed the worst biological performance of aphids, with the insects presenting mechanical difficulties for feeding and a shorter duration of the phloem period, and thus being considered the most resistant. We conclude that ScYLV virus infection in different sugarcane cultivars induced specific changes in the host plant, modifying the behavior of its main vector, which may favor or impair virus transmission.

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“…Miridae, Miridae, Nabidae, Noctuidae, Pentatomidae, Tetrigidae, and Chrysomelidae, some of them commonly present in grain crops, given their plasticity and adaptability [34,35].…”

Section: Entomol Appl Sci Lett 2021 8(4): 1-11mentioning

confidence: 99%

Composition and Functional Groups of Insects in Grain Crops from South-Ern Guanajuato

Leyte-Marique¹,

Guzmán-Mendoza²,

Salas-Araiza³

2021

Entomol. Appl. Sci. Lett

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Eight samplings were carried out in three-grain crops; corn, wheat, and barley, in El Capulín, Salvatierra, Gto., collecting 6,596 specimens of insects, from August to November 2018 and from February to May 2019. The entomofauna is made up of 11 orders and 59 families, of which, 53 are in corn, 25 in wheat, and 24 in barley. The entomofaunal community is grouped into two functional groups according to their ecological role, and their diet: 1) EFG´s (ecological functional groups), it includes herbivores, predators, parasitoids, pollinators, vectors, decomposers, and generalists; 2) TFG´s (trophic functional guilds) comprise phytophagous, insectivores, decomposers, polyphages, Necrophagist, hematophagous, carnivores, nectarivorous, and mycophagy. The principal component analysis for the EFG´s indicated a close relationship and dominance of herbivores and predators in corn, unlike wheat and barley, while for the phytophagic and insectivorous TFG´s presented the same relationship. As far as it can be said that in maize cultivation, both functional and trophic relationships are established by antagonistic groups of plant hosts and predators, the other groups in wheat and barley being non-specific and generalist groups. This shows dominance of insects adapted to the development, growth, and phenology cycles in the corn crop, in which the abundance values denote a relationship with demographic factors typical of phytophages, and a smaller number of families of the other groups. The agronomic management and other ecological interactions in the agroecosystems are factors that contribute to the composition of functional groups for entomofauna in the grain crops studied.

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Relationships among Melanaphis sacchari1, Its Predator Insect Communities, and Weather Conditions in Sorghum Crops at Colima, Mexico

Cited by 5 publications

References 17 publications

Natural Enemies, Mediated by Landscape and Weather Conditions, Shape Response of the Sorghum Agroecosystem of North America to the Invasive Aphid Melanaphis sorghi

Natural Enemies, Mediated by Landscape and Weather Conditions, Shape Response of the Sorghum Agroecosystem of North America to the Invasive Aphid Melanaphis sorghi

Effect of Sugarcane Cultivars Infected with Sugarcane Yellow Leaf Virus (ScYLV) on Feeding Behavior and Biological Performance of Melanaphis sacchari (Hemiptera: Aphididae)

Composition and Functional Groups of Insects in Grain Crops from South-Ern Guanajuato

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