Olfactory responses of two species of grasshoppers to plant odours

Chen, H.H.; Kang, Le

doi:10.1046/j.1570-7458.2000.00650.x

Cited by 22 publications

(9 citation statements)

References 16 publications

(21 reference statements)

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“…A gut transcriptome analysis revealed Stipa krylovii has a higher use efficiency by O. asiaticus relative to other common grasses, including Leymus chinensis, which is often co-dominant with Stipa in this species' range (Huang et al, 2017b). Accordingly, O. asiaticus has a greater olfactory response to plants in the Poaceae family relative to forb feeders (Chen and Kang, 2000). Several additional studies have investigated the nutritional ecology of this species.…”

Section: Gastrimargus Musicus (Fabricius 1775) Yellow-winged Locust-mentioning

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: Gastrimargus Musicus (Fabricius 1775) Yellow-winged Locust-mentioning

confidence: 99%

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

2019

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“…Furthermore, it is unlikely that grasshoppers detected more preferable plant traits in the watered plots at any great distance. Previous work has found that rangeland grasshoppers move in relation to the prevailing wind or randomly (Narisu et al ) and are retained by areas with preferable host plants that are encountered through close range olfactory cues or tactile contact and tasting (Mulkern et al , Blust and Hopkins , White and Chapman , Szentesi et al , Chen and Kang , Kang and Hopkins ).…”

Section: Methodsmentioning

confidence: 99%

Water stress in grasslands: dynamic responses of plants and insect herbivores

Lenhart

Eubanks

Behmer

2014

Oikos

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Global climate change is altering precipitation patterns. Th e eff ect of water stress on plant -herbivore interactions is poorly understood even though this is a primary ecological interaction that will be altered by climate change. Th is is especially true for grasslands where water is often limiting. In this study we manipulated water inputs in open grassland plots (1 m 2 ) during a severe drought and assessed plant and insect herbivore responses. Th ere were two watering treatments: ambient and supplemented. Supplemented plots received water weekly in amounts that mimicked average seasonal rainfall. For plants, we were interested in how water input aff ected protein and digestible carbohydrate content; previous studies predicted water stress would increase the concentration of these two nutrients. Grasshoppers are the dominant insect herbivores in grasslands and we assessed their responses to water inputs by measuring abundance and diversity. Previous studies suggested grasshoppers would prefer water-stressed plots. Protein and carbohydrate content in bulk grass and forb samples, plus plant biomass and diversity, were measured monthly (May -August). Immediately prior to harvesting plant tissue, we counted and identifi ed individual grasshoppers in each plot. Grass biomass was reduced with water stress, but macronutrient content and species diversity were unaff ected. After three months water-stressed forbs were less protein biased, and diverse, relative to watered forbs; forb biomass was indistinguishable between treatments. Grasshopper abundance and diversity were lower in water-stressed plots as the season progressed. However, grasshopper-feeding biology mattered: densities of mixed-feeders and grass-feeders, but not forb-specialists, decreased over time in water-stressed plots, but not in water supplemented plots. Our results demonstrate the importance of focusing on plant and insect herbivore functional groups and provide valuable new data that can be incorporated into models to explore the eff ects of global climate change in greater detail.

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“…Odour delivery system The odour delivery system was similar to that described by Chen & Kang (2000). A constant flow (1.0 L/min) of charcoal‐filtered and humidified compressed air was passed over the antenna through a disposable nozzle positioned 1 cm from the antenna.…”

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confidence: 99%

Role of plant volatiles in host plant location of the leafminer, Liriomyza sativae (Diptera: Agromyzidae)

Zhao

Kang

2002

Physiological Entomology

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Abstract. The role of plant volatiles in host plant location of the leafminer Liriomyza sativae Blanchard was studied. Four types of antennal sensilla were identified on the funiculus by scanning electron microscopy: trichoid, basiconic, clavate and grooved sensilla. An olfactory pit, containing groups of sensilla, was present on the ventral side of the funiculus. No sexual difference was detected in sensilla diversity and distribution. In behavioural assays, both males and females were attracted by the odour of the bean Phaseolus vulgaris L. They had distinct EAG responses to the bean odour. No significant sexual difference was found in behaviour or EAG responses.Electroantennograms were recorded from female L. sativae to 14 plant volatile compounds. The most distinct EAG responses were obtained for: (1) the general green leaf volatiles 1-hexanol (E)-2-hexen-1-ol, (E)-3-hexen-1-ol and its isomers, (Z)-3-hexen-1-ol, the acetate (E)-3-hexenylacetate and the aldehyde hexanal; and (2) limonene, a compound associated with tomato, which is a key host plant of this insect. Other volatile compounds associated with host plants, such as a-pinene, myrcene, b-caryophyllene, and eugenol did not elicit responses. The ability of this insect to locate a host plant appears to be augmented by the perception of a combination of host-specific and general green leaf volatiles. A modification of the EAG recording method of Dipteran species was provided.

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Olfactory responses of two species of grasshoppers to plant odours

Cited by 22 publications

References 16 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

Water stress in grasslands: dynamic responses of plants and insect herbivores

Role of plant volatiles in host plant location of the leafminer, Liriomyza sativae (Diptera: Agromyzidae)

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