Evaluating damage in the perianth: a new diagrammatic scale to estimate population level of Aceria guerreronis Keifer (Acari: Eriophyidae) in coconut fruits

The coconut mite, Aceria guerreronis Keifer (Acari: Eriophyidae), is one of the main pests of the coconut crop by attacking the fruits. Colonies can reach 10,000 mites/fruit at high infestation. A diagrammatic scale (Galvão scale) has been developed and tested by Brazilian researchers to estimate th...

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Autores:
Silva Guimarães Sousa, André
Correa Gondim Jr., Manoel Guedes
Argolo, Poliane Sá
Oliveira, Anibal Ramadan
Tipo de recurso:
Article of journal
Fecha de publicación:
2017
Institución:
Universidad Nacional de Colombia
Repositorio:
Universidad Nacional de Colombia
Idioma:
spa
OAI Identifier:
oai:repositorio.unal.edu.co:unal/61122
Acceso en línea:
https://repositorio.unal.edu.co/handle/unal/61122
http://bdigital.unal.edu.co/59930/
Palabra clave:
55 Ciencias de la tierra / Earth sciences and geology
63 Agricultura y tecnologías relacionadas / Agriculture
Acari
coconut mite
Cocos nucifera
eriophyid
scale of damage
Rights
openAccess
License
Atribución-NoComercial 4.0 Internacional
id UNACIONAL2_3f61e3e152443e5e18b052c9da2e267a
oai_identifier_str oai:repositorio.unal.edu.co:unal/61122
network_acronym_str UNACIONAL2
network_name_str Universidad Nacional de Colombia
repository_id_str
dc.title.spa.fl_str_mv Evaluating damage in the perianth: a new diagrammatic scale to estimate population level of Aceria guerreronis Keifer (Acari: Eriophyidae) in coconut fruits
title Evaluating damage in the perianth: a new diagrammatic scale to estimate population level of Aceria guerreronis Keifer (Acari: Eriophyidae) in coconut fruits
spellingShingle Evaluating damage in the perianth: a new diagrammatic scale to estimate population level of Aceria guerreronis Keifer (Acari: Eriophyidae) in coconut fruits
55 Ciencias de la tierra / Earth sciences and geology
63 Agricultura y tecnologías relacionadas / Agriculture
Acari
coconut mite
Cocos nucifera
eriophyid
scale of damage
title_short Evaluating damage in the perianth: a new diagrammatic scale to estimate population level of Aceria guerreronis Keifer (Acari: Eriophyidae) in coconut fruits
title_full Evaluating damage in the perianth: a new diagrammatic scale to estimate population level of Aceria guerreronis Keifer (Acari: Eriophyidae) in coconut fruits
title_fullStr Evaluating damage in the perianth: a new diagrammatic scale to estimate population level of Aceria guerreronis Keifer (Acari: Eriophyidae) in coconut fruits
title_full_unstemmed Evaluating damage in the perianth: a new diagrammatic scale to estimate population level of Aceria guerreronis Keifer (Acari: Eriophyidae) in coconut fruits
title_sort Evaluating damage in the perianth: a new diagrammatic scale to estimate population level of Aceria guerreronis Keifer (Acari: Eriophyidae) in coconut fruits
dc.creator.fl_str_mv Silva Guimarães Sousa, André
Correa Gondim Jr., Manoel Guedes
Argolo, Poliane Sá
Oliveira, Anibal Ramadan
dc.contributor.author.spa.fl_str_mv Silva Guimarães Sousa, André
Correa Gondim Jr., Manoel Guedes
Argolo, Poliane Sá
Oliveira, Anibal Ramadan
dc.subject.ddc.spa.fl_str_mv 55 Ciencias de la tierra / Earth sciences and geology
63 Agricultura y tecnologías relacionadas / Agriculture
topic 55 Ciencias de la tierra / Earth sciences and geology
63 Agricultura y tecnologías relacionadas / Agriculture
Acari
coconut mite
Cocos nucifera
eriophyid
scale of damage
dc.subject.proposal.spa.fl_str_mv Acari
coconut mite
Cocos nucifera
eriophyid
scale of damage
description The coconut mite, Aceria guerreronis Keifer (Acari: Eriophyidae), is one of the main pests of the coconut crop by attacking the fruits. Colonies can reach 10,000 mites/fruit at high infestation. A diagrammatic scale (Galvão scale) has been developed and tested by Brazilian researchers to estimate the number of mites/fruit by determining the percentage of necrotic area of the fruit surface. Our objective was to develop and validate a new diagrammatic scale based on the percentage of the damaged perimeter of the fruit at the base of the perianth, in order to facilitate and improve the quantification of A. guerreronis per fruit. Fruits were collected in an urban coconut plantation in Ilhéus, Bahia, Brazil. For the development of the new diagrammatic scale, it was calculated the percentage of the damaged perimeter on 50 fruits with different damage levels. To analyze the relationship between the damage and population levels of A. guerreronis on the fruits, we compared the two scales by testing them both on 470 fruits. The new diagrammatic scale recorded nine damage levels, 1, 2, 4, 8, 16, 32, 48, 70 and 100%. To validate our new diagrammatic scale, the damage level in each fruit was estimated by 10 inexperienced evaluators, with and without the aid of the scale. The accuracy and precision of each evaluator were determined through linear regression between observed and estimated damage. With or without or the use of the scale, 5 of 10 evaluators overestimated or underestimated the damage level and were imprecise and inaccurate. This showed that the scale did not provide improvements in the levels of accuracy and precision of the evaluators. The relationship between infestation and damage levels showed high accuracy for both scales in the regression analysis (R²= 96% and R²= 98%). The population peak of A. guerreronis by the new diagrammatic scale occurred at 32% of damage level and for the Galvão scale it occurred at 8% of damage level. Although the new diagrammatic scale has not promoted improvements in damage estimates, it presented high precision in the relationship between infestation and damage levels.
publishDate 2017
dc.date.issued.spa.fl_str_mv 2017-01-01
dc.date.accessioned.spa.fl_str_mv 2019-07-02T19:58:52Z
dc.date.available.spa.fl_str_mv 2019-07-02T19:58:52Z
dc.type.spa.fl_str_mv Artículo de revista
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dc.type.driver.spa.fl_str_mv info:eu-repo/semantics/article
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dc.identifier.issn.spa.fl_str_mv ISSN: 2323-0118
dc.identifier.uri.none.fl_str_mv https://repositorio.unal.edu.co/handle/unal/61122
dc.identifier.eprints.spa.fl_str_mv http://bdigital.unal.edu.co/59930/
identifier_str_mv ISSN: 2323-0118
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dc.relation.spa.fl_str_mv https://revistas.unal.edu.co/index.php/acta_agronomica/article/view/53491
dc.relation.ispartof.spa.fl_str_mv Universidad Nacional de Colombia Revistas electrónicas UN Acta Agronómica
Acta Agronómica
dc.relation.references.spa.fl_str_mv Silva Guimarães Sousa, André and Correa Gondim Jr., Manoel Guedes and Argolo, Poliane Sá and Oliveira, Anibal Ramadan (2017) Evaluating damage in the perianth: a new diagrammatic scale to estimate population level of Aceria guerreronis Keifer (Acari: Eriophyidae) in coconut fruits. Acta Agronómica, 66 (1). 141 - 147. ISSN 2323-0118
dc.rights.spa.fl_str_mv Derechos reservados - Universidad Nacional de Colombia
dc.rights.coar.fl_str_mv http://purl.org/coar/access_right/c_abf2
dc.rights.license.spa.fl_str_mv Atribución-NoComercial 4.0 Internacional
dc.rights.uri.spa.fl_str_mv http://creativecommons.org/licenses/by-nc/4.0/
dc.rights.accessrights.spa.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv Atribución-NoComercial 4.0 Internacional
Derechos reservados - Universidad Nacional de Colombia
http://creativecommons.org/licenses/by-nc/4.0/
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eu_rights_str_mv openAccess
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dc.publisher.spa.fl_str_mv Universidad Nacional de Colombia - Sede Palmira
institution Universidad Nacional de Colombia
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spelling Atribución-NoComercial 4.0 InternacionalDerechos reservados - Universidad Nacional de Colombiahttp://creativecommons.org/licenses/by-nc/4.0/info:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2Silva Guimarães Sousa, André0e48fb50-4f41-402d-8148-b1f37650500e300Correa Gondim Jr., Manoel Guedesfb030eea-26eb-4429-b62f-a60046c000f3300Argolo, Poliane Sá20581162-ceb8-4527-83a1-86147486247b300Oliveira, Anibal Ramadan4b8c8944-c813-4952-b0d2-38551dd729133002019-07-02T19:58:52Z2019-07-02T19:58:52Z2017-01-01ISSN: 2323-0118https://repositorio.unal.edu.co/handle/unal/61122http://bdigital.unal.edu.co/59930/The coconut mite, Aceria guerreronis Keifer (Acari: Eriophyidae), is one of the main pests of the coconut crop by attacking the fruits. Colonies can reach 10,000 mites/fruit at high infestation. A diagrammatic scale (Galvão scale) has been developed and tested by Brazilian researchers to estimate the number of mites/fruit by determining the percentage of necrotic area of the fruit surface. Our objective was to develop and validate a new diagrammatic scale based on the percentage of the damaged perimeter of the fruit at the base of the perianth, in order to facilitate and improve the quantification of A. guerreronis per fruit. Fruits were collected in an urban coconut plantation in Ilhéus, Bahia, Brazil. For the development of the new diagrammatic scale, it was calculated the percentage of the damaged perimeter on 50 fruits with different damage levels. To analyze the relationship between the damage and population levels of A. guerreronis on the fruits, we compared the two scales by testing them both on 470 fruits. The new diagrammatic scale recorded nine damage levels, 1, 2, 4, 8, 16, 32, 48, 70 and 100%. To validate our new diagrammatic scale, the damage level in each fruit was estimated by 10 inexperienced evaluators, with and without the aid of the scale. The accuracy and precision of each evaluator were determined through linear regression between observed and estimated damage. With or without or the use of the scale, 5 of 10 evaluators overestimated or underestimated the damage level and were imprecise and inaccurate. This showed that the scale did not provide improvements in the levels of accuracy and precision of the evaluators. The relationship between infestation and damage levels showed high accuracy for both scales in the regression analysis (R²= 96% and R²= 98%). The population peak of A. guerreronis by the new diagrammatic scale occurred at 32% of damage level and for the Galvão scale it occurred at 8% of damage level. Although the new diagrammatic scale has not promoted improvements in damage estimates, it presented high precision in the relationship between infestation and damage levels.application/pdfspaUniversidad Nacional de Colombia - Sede Palmirahttps://revistas.unal.edu.co/index.php/acta_agronomica/article/view/53491Universidad Nacional de Colombia Revistas electrónicas UN Acta AgronómicaActa AgronómicaSilva Guimarães Sousa, André and Correa Gondim Jr., Manoel Guedes and Argolo, Poliane Sá and Oliveira, Anibal Ramadan (2017) Evaluating damage in the perianth: a new diagrammatic scale to estimate population level of Aceria guerreronis Keifer (Acari: Eriophyidae) in coconut fruits. Acta Agronómica, 66 (1). 141 - 147. ISSN 2323-011855 Ciencias de la tierra / Earth sciences and geology63 Agricultura y tecnologías relacionadas / AgricultureAcaricoconut miteCocos nuciferaeriophyidscale of damageEvaluating damage in the perianth: a new diagrammatic scale to estimate population level of Aceria guerreronis Keifer (Acari: Eriophyidae) in coconut fruitsArtículo de revistainfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501http://purl.org/coar/resource_type/c_2df8fbb1http://purl.org/coar/version/c_970fb48d4fbd8a85Texthttp://purl.org/redcol/resource_type/ARTORIGINAL53491-302561-6-PB.pdfapplication/pdf4278975https://repositorio.unal.edu.co/bitstream/unal/61122/1/53491-302561-6-PB.pdf7b4c760262be3a5bd994af4a1d9e56baMD51THUMBNAIL53491-302561-6-PB.pdf.jpg53491-302561-6-PB.pdf.jpgGenerated Thumbnailimage/jpeg7961https://repositorio.unal.edu.co/bitstream/unal/61122/2/53491-302561-6-PB.pdf.jpga15dab3d7b806a4698a5b5b51b46c968MD52unal/61122oai:repositorio.unal.edu.co:unal/611222023-04-10 23:05:33.43Repositorio Institucional Universidad Nacional de Colombiarepositorio_nal@unal.edu.co