Dynamic Simulation Model of Central American Locust<i>Schistocerca piceifrons</i>(Orthoptera: Acrididae)

Hernández-Zul, M. I.; Quijano-Carranza, Juan Ángel; Yáñez-López, Ricardo; Torres-Pacheco, Irineo; Guevara-González, Ramón Gerardo; Castro-Ramírez, Adriana E.

doi:10.1653/024.096.0405

Cited by 17 publications

(13 citation statements)

References 10 publications

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“…In Mexico, the species is bivoltine with generations in spring and fall. The spring generation is shorter in duration (Hernández-Zul et al, 2013) and the fall generation goes into diapause as adults (Song, 2011). Nymphs are green at birth and at low density, but at high density exhibit black markings on a peach background (Hunter-Jones, 1967).…”

Section: Schistocerca Piceifrons Peruviana (Lynchmentioning

confidence: 99%

A Global Review on Locusts (Orthoptera: Acrididae) and Their Interactions With Livestock Grazing Practices

2019

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Connections between locusts and people date back millennia and locusts remain a major food security challenge today throughout the world. Locust biology is often linked to abiotic conditions like temperature and/or precipitation, fueling the perception that aside from active control, humans are not key players in the interaction locusts have with their environment. However, several studies have shown that land management practices like grazing heavily influences locust-human linkages. In this review we synthesize published research and reports on connections between locust outbreaks and ranching. For this, we conducted an extensive literature search using Google Scholar on the 19 species of grasshoppers that are currently considered to be locusts or non-model locusts. Species were sorted according to their feeding guilds: (1) forb-and/or tree-feeding locusts; (2) mix-feeding locusts (grasses, forbs, and/or trees); (3) grass-feeding locusts. We review their pest status, ecology, and relationship with grazing. We then discuss the overall data and draw general patterns on how locusts and locust control affect livestock grazing through various mechanisms (competition, nutritional preferences, pesticide use, nutrient cycling). We draw attention to "telecoupling" a process in which land management practices like grazing have ecological feedbacks on locust populations, which in turn affects food security in distant regions due to the migratory capacity of locusts. Finally, we present new perspectives for sustainable management practices that integrate understanding of land management.

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Section: Schistocerca Piceifrons Peruviana (Lynchmentioning

confidence: 99%

A Global Review on Locusts (Orthoptera: Acrididae) and Their Interactions With Livestock Grazing Practices

2019

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“…Characteristics of climate and soil contribute greatly to the fluctuation of population density of various insect species (Vinatier et al, 2011). In the case of locusts, temperature and soil moisture are highly correlated with egg laying and, in turn, increases in locust populations (Van der Werf et al, 2005;Xian-Lei et al, 2007;Hernández-Zul et al, 2013). Weather at a regional scale, particularly the distribution of precipitation, is also a critical factor that shapes the population density of locusts (de Wysiecki et al, 2011).…”

Section: Weathermentioning

confidence: 99%

From Molecules to Management: Mechanisms and Consequences of Locust Phase Polyphenism

Cullen

Cease

Latchininsky

et al. 2017

Advances in Insect Physiology

125

141

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Locusts are grasshoppers (Orthoptera: Acrididae) that are characterised by their capacity for extreme population density-dependent polyphenism, transforming between a cryptic solitarious phase that avoids other locusts, and a swarming gregarious phase that aggregates and undergoes collective migration. The two phases differ in many aspects of behaviour, physiology and ecology, making locusts a useful model through which to investigate the phenotypic interface of molecular processes and environmental cues. This review summarises recent progress in understanding the mechanisms and consequences of locust phase change, from differential gene expression and epigenetic regulation through to neuronal plasticity and altered behaviour. The impact of techniques such as RNA interference (RNAi), and the sequencing of the first locust genome is discussed, and we consider the evidence from comparative analyses between related locust species for the possible evolution of locust-like phenotypic plasticity. Collective movement, and new ways of measuring the behaviour of both migrating bands in the field and individuals in the laboratory, are analysed. We also examine the environmental factors that affect phase change, along with the wider impact of land use and management strategies that may unwittingly create environments conducive to outbreaks. Finally, we consider the human costs of locust swarming behaviour, and use combined social, economic and environmental approaches to suggest potential ways forward for locust monitoring and management.

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“…In most of the sampling sites the highest locust population density was observed in the rainy season, in contrast; a dramatic decrease in population density was observed in the dry season. The reduction in population density of S. p. piceifrons in the dry season is attributed to a decline in the abundance of host plants and to changes in locust physiology that produce a recession period (Barrientos et al, 1992;Symmons & Cressman, 2001;Hernández-Zul et al, 2013). These responses fit a seasonal pattern established for some herbivorous insects whereby diapause during the dry season maximizes their survival (Wolda, 1989;KishimotoYamada & Itioka, 2015).…”

Section: Discussionmentioning

confidence: 90%

Fluctuación poblacional de Schistocerca piceifrons piceifrons (Orthoptera: Acrididae) en la Península de Yucatán y su relación con las condiciones climáticas:

Poot-Pech

Ruíz-Sánchez

Ballina-Gómez³

et al. 2017

RBT

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Abstract:The Central American Locust Schistocerca piceifrons piceifrons is one of the most damaging plant pest in Mexico and Central America. The present work was carried out to evaluate the seasonal population fluctuation of S. p. piceifrons and vegetation diversity and their association with weather factors and edaphic conditions in the gregarious zone of the Yucatán Península. The study was performed in seven sites during three seasons: North-wind (December 2013), rainy (June 2014) and dry (April 2014). The locust density was sampled in transect of 100 m 2 , as well as the vegetation in 16 m 2 : plant species richness (PSR) and relative species density (RSD), and analyzed by generalized linear models. Additionally, soil samples were obtained at 10 cm depth into a 4 × 6 m quadrat, land use in the sites was classified and temperature, precipitation and evaporation of each site were obtained from the database and they were analyzed with multiple factor analysis. The population density of S. p. piceifrons was higher in the sites Panaba, Tizimin, Tunkas and Cenotillo (F= 74.3, P < 0.0001). Characterization of vegetation showed that PSR and RSD were higher during the rainy season relative to those in the dry season (F= 50.4, P < 0.0001). RSD was identified as the most important group associated with locust density (0.86), followed by isotherm/isohyets (0.63), maximum precipitation and temperature (0.60), as well as the land use (0.65); no correlation between locust density and soil characteristics was found. Locust density was positively correlated with the abundance of the grass Panicum maximum (Sr 2 = 0.85, PC5= 0.87). This work shows that the population of S. p. piceifrons is high in the rainy season and influenced primarily by the abundance of the grass P. maximum and the precipitation. The results indicate that surveys for early detection and control of the locust on the Yucatán Península can focus on areas with the grass P. maximum to predict risk areas and target survey efforts. Rev. Biol. Trop. 66(1): 403-414. Epub 2018 March 01.

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Dynamic Simulation Model of Central American LocustSchistocerca piceifrons(Orthoptera: Acrididae)

Cited by 17 publications

References 10 publications

A Global Review on Locusts (Orthoptera: Acrididae) and Their Interactions With Livestock Grazing Practices

A Global Review on Locusts (Orthoptera: Acrididae) and Their Interactions With Livestock Grazing Practices

From Molecules to Management: Mechanisms and Consequences of Locust Phase Polyphenism

Fluctuación poblacional de Schistocerca piceifrons piceifrons (Orthoptera: Acrididae) en la Península de Yucatán y su relación con las condiciones climáticas:

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