Dry bolls and their association with Anthonomus grandis grandis Boheman (Coleoptera: Curculionidae) survival through cotton fallow periods

2021 ◽  
pp. 1-12
Author(s):  
Willian S. do Vale ◽  
Maria A. Castellani ◽  
Victor R. de Novais ◽  
Welliny S.R. Dias ◽  
Ana Carolina S. Lima ◽  
...  
Keyword(s):  
Gossypium Hirsutum ◽  
Boll Weevil ◽  
Anthonomus Grandis ◽  
Survival Strategy ◽  
Cotton Crop ◽  
Fallow Period ◽  
Reproductive Structures ◽  
Internal Structures

Abstract The boll weevil, Anthonomus grandis grandis Boheman (Coleoptera: Curculionidae), can remain inside dry and deformed reproductive structures of cotton, Gossypium hirsutum Linnaeus (Malvaceae), known as dry bolls, during the cotton fallow to infest the next cotton crop. In this study, the influence of cotton cultivars and sowing densities on the formation of dry bolls was evaluated. In addition, dry bolls were dissected and internal structures that were related to boll weevil development were estimated. Finally, the presence and survival of boll weevils inside dry bolls were evaluated. The results indicate that the number of dry bolls, empty pupal cells, and emergence holes was influenced by cultivar and not by sowing density. Almost one-quarter (22.53%) of adult boll weevils examined was found alive inside the dry bolls after 10 weeks, which is slightly longer than the duration of cotton fallow in Brazil’s main cotton-producing regions. Therefore, remaining inside the dry bolls is an important survival strategy for boll weevils during the cotton fallow period, and cotton cultivars with a greater propensity for the formation of dry bolls might favour survival of the pest during this period.

scholarly journals Survival pattern of the boll weevil during cotton fallow in Midwestern Brazil

2017 ◽  
Vol 52 (3) ◽  
pp. 149-160 ◽  
Author(s):  
Carmen Silvia Soares Pires ◽  
Mayra Pimenta ◽  
Renata Alves da Mata ◽  
Lucas Machado de Souza ◽  
Débora Pires Paula ◽  
...  
Keyword(s):  
Cotton Plant ◽  
Boll Weevil ◽  
Alternative Food ◽  
Food Sources ◽  
Adult Longevity ◽  
Cotton Boll ◽  
Fallow Period ◽  
Reproductive Structures ◽  
Survival Pattern ◽  
Alternative Food Sources

Abstract: The objective of this work was to determine the survival pattern of the cotton boll weevil during fallow in Midwestern Brazil. The percentage of adults that remained in the cotton reproductive structures, the percentage of adults searching for shelters, and the longevity of adults fed on pollen and nectar as alternative food sources were determined. For this, four populations were sampled in cotton squares and bolls, totaling 11,293 structures, from 2008 to 2012. The emergency of cotton weevil adults was monitored from the collection of the structures until the next cotton season. In the laboratory, newly-emerged adults were fed on hibiscus or Spanish needle, and their life span was monitored individually. Most adults (85.73%) left the reproductive structures, regardless of the cotton plant phenology, up to 49 days after the structures were collected. One individual (0.0002%) from 5,544 adults was found alive after the fallow period. The diet with hibiscus and Spanish needle provided adult longevity of 76±38 days, which was enough time for adults to survive during the fallow period. Most of the boll weevils leave the cotton structures at the end of harvest, survive using alternative food sources, and do not use cotton plant structures as shelter during the legal cotton fallow period in Midwestern Brazil.

THE INTERACTION OF COTTON AND BOLL WEEVIL (COLEOPTERA: CURCULIONIDAE) — A STUDY OF CO-ADAPTATION

1979 ◽  
Vol 111 (3) ◽  
pp. 357-366 ◽  
Author(s):  
A. P. Gutierrez ◽  
Y. Wang ◽  
R. Daxl
Keyword(s):  
Population Dynamics ◽  
Gossypium Hirsutum ◽  
Production Rate ◽  
Growth Parameters ◽  
Boll Weevil ◽  
Anthonomus Grandis ◽  
Weather Patterns

AbstractThe growth parameters for cotton (Gossypium hirsutum L.) were examined via optimization studies to determine if the observed values were optimal for the season lengths and weather patterns found in California and Nicaragua. The parameters observed for Nicaraguan cotton were further examined to determine if predation by boll weevil (Anthonomus grandis Boh.) of small cotton fruit (squares) could explain the observed discrepancies. All of the observed growth parameters except the fruit bud production rate for the Acala SJ II variety of cotton which is grown in California appeared to be reasonably optimal for California condition (i.e. boll weevil does not occur in California). By contrast, the parameters for the Nicaraguan variety were sub-optimal if boll weevil was excluded from the analysis, but near optimal if the population dynamics of pest were included.

scholarly journals Transcriptome analysis of Gossypium hirsutum flower buds infested by cotton boll weevil (Anthonomus grandis) larvae

BMC Genomics ◽  
2014 ◽  
Vol 15 (1) ◽  
pp. 854 ◽  
Author(s):  
Sinara Artico ◽  
Marcelo Ribeiro-Alves ◽  
Osmundo Oliveira-Neto ◽  
Leonardo Lima de Macedo ◽  
Sylvia Silveira ◽  
...  
Keyword(s):  
Gossypium Hirsutum ◽  
Transcriptome Analysis ◽  
Boll Weevil ◽  
Anthonomus Grandis ◽  
Cotton Boll ◽  
Flower Buds ◽  
Cotton Boll Weevil

scholarly journals Phytophagous insects in cotton crop residues during the fallow period in the state of Mato Grosso do Sul, Brazil

2018 ◽  
Vol 53 (8) ◽  
pp. 875-884 ◽  
Author(s):  
Rafael Azevedo da Silva ◽  
Paulo Eduardo Degrande ◽  
Carlos Eduardo Carducci Gomes ◽  
Ellen Patricia de Souza ◽  
Mateus Fuchs Leal
Keyword(s):  
Crop Residues ◽  
Insect Pests ◽  
Aphis Gossypii ◽  
The State ◽  
Anthonomus Grandis ◽  
Bt Cotton ◽  
Mato Grosso ◽  
Cotton Crop ◽  
Fallow Period ◽  
Mato Grosso Do Sul

Abstract: The objective of this work was to analyze the faunistic composition of the insect pests that occur during the fallow period in cotton (Gossypium hirsutum) crop residues in the state of Mato Grosso do Sul, Brazil. The study sites were the municipalities of Alcinópolis, Chapadão do Sul, Costa Rica, Aral Moreira, Dourados, and Sidrolândia. A sampling design with two replicates per municipality was used. Each replicate comprised 100 random points, and each point corresponded to a cotton plant that was entirely inspected, to count the insect pests on it. The obtained fauna was analyzed and a rarefaction curve of the species was generated. During the evaluation period, a total of 23 species were recorded in the cotton crop residue, and the most frequent and abundant were Bemisia tabaci, Aphis gossypii, Frankliniella schultzei, and Anthonomus grandis. The caterpillars were predominantly found on the non-Bt cotton crops in Dourados, and Chapadão do Sul was the municipality that exhibited the greatest species diversity. Despite being mandatory, the destruction of cotton stalks during the fallow period was not able to completely eliminate the insect pests during the study period; among these insect pests, A. grandis stands out, a species that affects the dynamics of cotton pest control.

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