Spatial distribution of lysiphlebus testaceipes (Cresson) (Hymenoptera: Aphidiidae) in cotton grown in a narrow system
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.15361/1984-5529.2021V49N1P14-18 http://hdl.handle.net/11449/207643 |
Resumo: | In the present study, the effects of the densification of cotton on the spatial distribution of the aphid parasitoid Lysiphlebus testaceipes (Cresson) (Hymenoptera: Aphidiidae). The three spacings adopted were: 0.40 m x 0.20 m (E1), 0.80 m x 0.20 m (E2) and 1.60 m x 0.20 m (E3). A randomized block design with four replications was used. The results showed that the spatial arrangement of cotton modifies the dispersion pattern of L. testaceipes. The parameter b of the Taylor equation was higher than the unit in the spacing: 0.40 m and 1.60 m, while in 0.80 m the value of b was lower than the unit. Therefore, populations of L. testaceipes in conditions of spacing between lines of 0.40 m and 1.60 m are distributed in an aggregate form, however they are uniformly distributed in 0.80 m. The Iwao model revealed that for the spacing: 0.80 m and 1.60 m there is a trend of repulsion of individuals, since the values of the constant a were less than 1. The Nachman model was adjusted only for the population data in cotton grown at 0.80 m, therefore, for this system, plans that aim to estimate the population level of L. testaceipes can be based only on presence / absence observations, instead of individual counting. The present study results are relevant to strategies for the release and conservation of L. testaceipes for biological control of aphid populations in cotton. |
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Spatial distribution of lysiphlebus testaceipes (Cresson) (Hymenoptera: Aphidiidae) in cotton grown in a narrow systemDistribuição espacial de Lysiphlebus testaceipes (Cresson) (Hymenoptera: Aphidiidae) em algodoeiro cultivado em sistema adensadoAggregationAphidParasitoidSpacingIn the present study, the effects of the densification of cotton on the spatial distribution of the aphid parasitoid Lysiphlebus testaceipes (Cresson) (Hymenoptera: Aphidiidae). The three spacings adopted were: 0.40 m x 0.20 m (E1), 0.80 m x 0.20 m (E2) and 1.60 m x 0.20 m (E3). A randomized block design with four replications was used. The results showed that the spatial arrangement of cotton modifies the dispersion pattern of L. testaceipes. The parameter b of the Taylor equation was higher than the unit in the spacing: 0.40 m and 1.60 m, while in 0.80 m the value of b was lower than the unit. Therefore, populations of L. testaceipes in conditions of spacing between lines of 0.40 m and 1.60 m are distributed in an aggregate form, however they are uniformly distributed in 0.80 m. The Iwao model revealed that for the spacing: 0.80 m and 1.60 m there is a trend of repulsion of individuals, since the values of the constant a were less than 1. The Nachman model was adjusted only for the population data in cotton grown at 0.80 m, therefore, for this system, plans that aim to estimate the population level of L. testaceipes can be based only on presence / absence observations, instead of individual counting. The present study results are relevant to strategies for the release and conservation of L. testaceipes for biological control of aphid populations in cotton.Ciências Agrárias da Universidade Estadual da Paraíba UEPB em Parceria Com A Embrapa AlgodãoBioestatística Pelo IBB-UNESPEntomologia da ESALQ/USPEmbrapa AlgodãoUniversidade Federal de Campina Grande - UFCG/CDSAUniversidade Federal Rural de Pernambuco - URFPEBioestatística Pelo IBB-UNESPEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)Universidade Estadual Paulista (Unesp)Universidade de São Paulo (USP)Universidade Federal de Campina Grande - UFCG/CDSAUniversidade Federal Rural de Pernambuco - URFPEDe Andrade Lima, TardellyMalaquias, José Bruno [UNESP]Da Silva Pachú, Jéssica KarinaDe Sousa Ramalho, FranciscoIsidro, RenatoLira, Aline Cristina Silva2021-06-25T10:58:33Z2021-06-25T10:58:33Z2021-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article14-18http://dx.doi.org/10.15361/1984-5529.2021V49N1P14-18Cientifica, v. 49, n. 1, p. 14-18, 2021.1984-5529http://hdl.handle.net/11449/20764310.15361/1984-5529.2021V49N1P14-182-s2.0-85104677675Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporCientificainfo:eu-repo/semantics/openAccess2021-10-23T17:45:52Zoai:repositorio.unesp.br:11449/207643Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T15:10:04.421988Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Spatial distribution of lysiphlebus testaceipes (Cresson) (Hymenoptera: Aphidiidae) in cotton grown in a narrow system Distribuição espacial de Lysiphlebus testaceipes (Cresson) (Hymenoptera: Aphidiidae) em algodoeiro cultivado em sistema adensado |
title |
Spatial distribution of lysiphlebus testaceipes (Cresson) (Hymenoptera: Aphidiidae) in cotton grown in a narrow system |
spellingShingle |
Spatial distribution of lysiphlebus testaceipes (Cresson) (Hymenoptera: Aphidiidae) in cotton grown in a narrow system De Andrade Lima, Tardelly Aggregation Aphid Parasitoid Spacing |
title_short |
Spatial distribution of lysiphlebus testaceipes (Cresson) (Hymenoptera: Aphidiidae) in cotton grown in a narrow system |
title_full |
Spatial distribution of lysiphlebus testaceipes (Cresson) (Hymenoptera: Aphidiidae) in cotton grown in a narrow system |
title_fullStr |
Spatial distribution of lysiphlebus testaceipes (Cresson) (Hymenoptera: Aphidiidae) in cotton grown in a narrow system |
title_full_unstemmed |
Spatial distribution of lysiphlebus testaceipes (Cresson) (Hymenoptera: Aphidiidae) in cotton grown in a narrow system |
title_sort |
Spatial distribution of lysiphlebus testaceipes (Cresson) (Hymenoptera: Aphidiidae) in cotton grown in a narrow system |
author |
De Andrade Lima, Tardelly |
author_facet |
De Andrade Lima, Tardelly Malaquias, José Bruno [UNESP] Da Silva Pachú, Jéssica Karina De Sousa Ramalho, Francisco Isidro, Renato Lira, Aline Cristina Silva |
author_role |
author |
author2 |
Malaquias, José Bruno [UNESP] Da Silva Pachú, Jéssica Karina De Sousa Ramalho, Francisco Isidro, Renato Lira, Aline Cristina Silva |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA) Universidade Estadual Paulista (Unesp) Universidade de São Paulo (USP) Universidade Federal de Campina Grande - UFCG/CDSA Universidade Federal Rural de Pernambuco - URFPE |
dc.contributor.author.fl_str_mv |
De Andrade Lima, Tardelly Malaquias, José Bruno [UNESP] Da Silva Pachú, Jéssica Karina De Sousa Ramalho, Francisco Isidro, Renato Lira, Aline Cristina Silva |
dc.subject.por.fl_str_mv |
Aggregation Aphid Parasitoid Spacing |
topic |
Aggregation Aphid Parasitoid Spacing |
description |
In the present study, the effects of the densification of cotton on the spatial distribution of the aphid parasitoid Lysiphlebus testaceipes (Cresson) (Hymenoptera: Aphidiidae). The three spacings adopted were: 0.40 m x 0.20 m (E1), 0.80 m x 0.20 m (E2) and 1.60 m x 0.20 m (E3). A randomized block design with four replications was used. The results showed that the spatial arrangement of cotton modifies the dispersion pattern of L. testaceipes. The parameter b of the Taylor equation was higher than the unit in the spacing: 0.40 m and 1.60 m, while in 0.80 m the value of b was lower than the unit. Therefore, populations of L. testaceipes in conditions of spacing between lines of 0.40 m and 1.60 m are distributed in an aggregate form, however they are uniformly distributed in 0.80 m. The Iwao model revealed that for the spacing: 0.80 m and 1.60 m there is a trend of repulsion of individuals, since the values of the constant a were less than 1. The Nachman model was adjusted only for the population data in cotton grown at 0.80 m, therefore, for this system, plans that aim to estimate the population level of L. testaceipes can be based only on presence / absence observations, instead of individual counting. The present study results are relevant to strategies for the release and conservation of L. testaceipes for biological control of aphid populations in cotton. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-06-25T10:58:33Z 2021-06-25T10:58:33Z 2021-01-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.15361/1984-5529.2021V49N1P14-18 Cientifica, v. 49, n. 1, p. 14-18, 2021. 1984-5529 http://hdl.handle.net/11449/207643 10.15361/1984-5529.2021V49N1P14-18 2-s2.0-85104677675 |
url |
http://dx.doi.org/10.15361/1984-5529.2021V49N1P14-18 http://hdl.handle.net/11449/207643 |
identifier_str_mv |
Cientifica, v. 49, n. 1, p. 14-18, 2021. 1984-5529 10.15361/1984-5529.2021V49N1P14-18 2-s2.0-85104677675 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
Cientifica |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
14-18 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
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1808128472475762688 |