Pea Leaf Weevil (Coleoptera: Curculionidae) Spatial Distribution in Peas

Schotzko, D. J.; Quisenberry, S. S.

doi:10.1093/ee/28.3.477

Cited by 26 publications

(26 citation statements)

References 30 publications

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“…However, our observations are consistent with those of Nielsen (1990), who observed a strong linear relationship between adult weevil density and foliar damage in faba beans when 0, 5, 10, 15, and 20 pairs of weevils were added to cages housing 32 plants. Lohaus and Vidal (2010) did not observe a strong positive relationship between weevil density and foliar damage in Þeld peas when weevil densities were 2.2 and 14.9 weevils per m 2 , which they attributed to temperature-dependent feeding (see Landon et al 1995) and the tendency of adult weevils to be spatially aggregated in Þeld pea crops (see Schotzko and Quisenberry 1999). Contrary to the conclusion of Lohaus and Vidal (2010), our results suggest that foliar damage to Þeld pea plants can be used to estimate weevil density and to monitor S. lineatus infestation of Þeld pea crops, as Nielsen (1990) concluded for faba beans.…”

Section: Discussionmentioning

confidence: 95%

Response of Pisum sativum (Fabales: Fabaceae) to Sitona lineatus (Coleoptera: Curculionidae) Infestation: Effect of Adult Weevil Density on Damage, Larval Population, and Yield Loss

2011

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Sitona lineatus L. (Coleoptera: Curculionidae) is an invasive pest in North America and its geographical range is currently expanding across the Canadian prairies. Adults and larvae of S. lineatus feed upon the foliage and root nodules, respectively, of field pea, Pisum sativum L. (Fabales: Fabaceae), and may contribute to economic losses when population densities are high. Integrated pest management (IPM) programs that incorporate economic thresholds should be used to manage S. lineatus populations in a sustainable manner. The impact of nitrogen fertilizer on field pea yield and the relationships between adult weevil density and above- and below-ground damage and yield were investigated in southern Alberta, Canada using exclusion cages on field pea plots. In each cage, 32 field pea plants were exposed to weevil densities ranging from zero to one adult weevil per plant. Nitrogen-fertilized plants yielded 16% more than unfertilized plants. Nitrogen-fertilized plants had fewer root nodules than unfertilized plants, but fertilizer had no effect on foliar feeding by S. lineatus. Adult density affected foliar feeding damage, with increases in above-ground damage associated with increases in S. lineatus density. Adult density did not affect root nodule damage, larval density, foliar biomass or seed weight. Overall, these results indicate that terminal leaf damage may be used to estimate adult weevil density but cannot be used to predict larval density or yield loss. Further research is required to better understand the impact of larval damage on yield and determine if economic thresholds can be developed using data from large-scale production systems.

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Section: Discussionmentioning

confidence: 95%

Response of Pisum sativum (Fabales: Fabaceae) to Sitona lineatus (Coleoptera: Curculionidae) Infestation: Effect of Adult Weevil Density on Damage, Larval Population, and Yield Loss

2011

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“…Population densities of adult pea leaf weevil were measured in both tillage treatments through a series of linear meter soil samples (Schotzko and Quisenberry 1999). Ten random samples were collected from each of eight plots, for a total of 40 samples per tillage treatment.…”

Section: Methodsmentioning

confidence: 99%

“…A row of soil and plant material 30 cm in length by10 cm in width (300 cm 2 ) was collected for each sample by using a plastic pitcher. The soil in the pitcher was run through a series of graduated sieves that removed the largest particles, reducing the amount of material processed (Aeschlimann 1979, Schotzko andQuisenberry 1999). The sex of all adult pea leaf weevils collected was determined (Bright 1994) and the male:female ratio was calculated by treatment.…”

Section: Methodsmentioning

confidence: 99%

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Influence of Tillage on Adult and Immature Pea Leaf Weevil (Coleoptera: Curculionidae) Densities in Pea

Hanavan

Bosque‐Pérez

Schotzko

et al. 2010

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The pea leaf weevil, Sitona lineatus (L.) (Coleoptera: Curculionidae), has been a major pest of pea, Pisum sativum L., in eastern Washington and northern Idaho since its introduction to the region in the early 1970s. Eggs are deposited in the spring on the soil surface and first instars hatch and move to pea root nodules, where larvae feed before they pupate and adults emerge in mid- to late summer. No-tillage practices are known to reduce pea leaf weevil colonization in pea, but the effects of tillage on larval densities and subsequent adult emergence have not been examined. During 2005, 2006, and 2007, we compared densities of colonizing adult and immature pea leaf weevils on pea plots grown using conventional tillage and no-tillage. In 2005 and 2006, emergence of adult pea leaf weevil was monitored in the same plots. Densities of colonizing adult and immature pea leaf weevil were significantly higher in conventional tillage plots. Larvae in conventional tillage were further along in development than larvae in no-tillage plots during June and July. Densities of emerging adult pea leaf weevil were significantly greater from conventional tillage than no-tillage plots. Based on densities of colonizing and subsequent emerging adults, survival of weevils from egg through adult was greater in conventional tillage plots. Soils under no-tillage are cooler, resulting in later emergence of the pea crop and delayed root nodule development, possibly affecting the ability of first-instar pea leaf weevil to locate host plant roots. Our results indicate no-tillage fields are less suitable for pea leaf weevil colonization and survival than conventional tillage fields.

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“…Backoulou et al (5-7) used spatial pattern analysis to distinguish distributional patterns of an insect pest based on spatial variation in plant stress detected in multispectral imagery caused by the insect's inherent patchy spatial distribution in the field. Insects have species-specific spatial distributions within a particular ecological habitat (132), and their outbreaks in crops are frequently spatially aggregated (64,99,121,146). In addition, Russian wheat aphid showed patchy spatial distributions in wheat fields (5,6).…”

Section: Spatial-based Classification Methodsmentioning

confidence: 99%

Remote Sensing and Reflectance Profiling in Entomology

Nansen

Elliott

2016

Annu. Rev. Entomol.

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Remote sensing describes the characterization of the status of objects and/or the classification of their identity based on a combination of spectral features extracted from reflectance or transmission profiles of radiometric energy. Remote sensing can be benchtop based, and therefore acquired at a high spatial resolution, or airborne at lower spatial resolution to cover large areas. Despite important challenges, airborne remote sensing technologies will undoubtedly be of major importance in optimized management of agricultural systems in the twenty-first century. Benchtop remote sensing applications are becoming important in insect systematics and in phenomics studies of insect behavior and physiology. This review highlights how remote sensing influences entomological research by enabling scientists to nondestructively monitor how individual insects respond to treatments and ambient conditions. Furthermore, novel remote sensing technologies are creating intriguing interdisciplinary bridges between entomology and disciplines such as informatics and electrical engineering.

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Pea Leaf Weevil (Coleoptera: Curculionidae) Spatial Distribution in Peas

Cited by 26 publications

References 30 publications

Response of Pisum sativum (Fabales: Fabaceae) to Sitona lineatus (Coleoptera: Curculionidae) Infestation: Effect of Adult Weevil Density on Damage, Larval Population, and Yield Loss

Response of Pisum sativum (Fabales: Fabaceae) to Sitona lineatus (Coleoptera: Curculionidae) Infestation: Effect of Adult Weevil Density on Damage, Larval Population, and Yield Loss

Influence of Tillage on Adult and Immature Pea Leaf Weevil (Coleoptera: Curculionidae) Densities in Pea

Remote Sensing and Reflectance Profiling in Entomology

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