Effects of natural infestations of the mite Varroa, destructor on the development of Africanized honeybee workers (Apis mellifera)
Autor(a) principal: | |
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Data de Publicação: | 2011 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://hdl.handle.net/11449/226424 |
Resumo: | The mite Varroa destructor (Anderson & Treuman 2000) has caused extensive damage to beekeeping worldwide. In Brazil, weather conditions and the strains of bees do not provide ideal conditions for mite parasitism, which is reflected in the low number of deaths of colonies caused by varroatosis well as the stability of infestation levels. The aim of this study was to evaluate the damage caused by the mite infestation in hives maintained in natural conditions. For this purpose the number of mites per bee was calculated and used to quantify the level of infestation in each colony. To record the mortality rates of parasitized bees during development daily checks were performed. The data were analyzed by G test of independence and a Test of Proportions. The results indicate that the rate of mortality of pupae and larvae was proportional to the degree of infestation in each colony, and all colonies showed mortality rates significantly higher than the control rate. A significant interaction among death rates recorded between the third and fourth days of larval life and the total death of larvae was found (G Test - 50.22; P < 0.0001). So, it can be concluded that bee inbreeding contributed significantly to the increase of the larval rate of mortality. In Africanized honeybee colonies infested by the mite Varroa destructor mortality rates in conditions of natural infestation varied from 6.65 to 9.89% in pupae (x̄= 8.78%) and from 6.13 to 13.48% in larvae ( x̄ = 9.91%), against 3.85% and 3.74% in the control colony, respectively. Therefore, in the infested colonies the average rates of mortality caused by the harmful effects of the mite were, respectively, 2.28 times and 2.65 times greater in those two developmental stages. |
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Effects of natural infestations of the mite Varroa, destructor on the development of Africanized honeybee workers (Apis mellifera)Africanized honeybeesApis melliferaDevelopmentMortality analysisVarroa destructorThe mite Varroa destructor (Anderson & Treuman 2000) has caused extensive damage to beekeeping worldwide. In Brazil, weather conditions and the strains of bees do not provide ideal conditions for mite parasitism, which is reflected in the low number of deaths of colonies caused by varroatosis well as the stability of infestation levels. The aim of this study was to evaluate the damage caused by the mite infestation in hives maintained in natural conditions. For this purpose the number of mites per bee was calculated and used to quantify the level of infestation in each colony. To record the mortality rates of parasitized bees during development daily checks were performed. The data were analyzed by G test of independence and a Test of Proportions. The results indicate that the rate of mortality of pupae and larvae was proportional to the degree of infestation in each colony, and all colonies showed mortality rates significantly higher than the control rate. A significant interaction among death rates recorded between the third and fourth days of larval life and the total death of larvae was found (G Test - 50.22; P < 0.0001). So, it can be concluded that bee inbreeding contributed significantly to the increase of the larval rate of mortality. In Africanized honeybee colonies infested by the mite Varroa destructor mortality rates in conditions of natural infestation varied from 6.65 to 9.89% in pupae (x̄= 8.78%) and from 6.13 to 13.48% in larvae ( x̄ = 9.91%), against 3.85% and 3.74% in the control colony, respectively. Therefore, in the infested colonies the average rates of mortality caused by the harmful effects of the mite were, respectively, 2.28 times and 2.65 times greater in those two developmental stages.Departamento de Biologia Instituto de Biociências de Rio Claro Universidade Estadual Paulista, Avenida 24 A 1515, CEP 13506-900, Rio Claro-SPDepartamento de Biologia Instituto de Biociências de Rio Claro Universidade Estadual Paulista, Avenida 24 A 1515, CEP 13506-900, Rio Claro-SPUniversidade Estadual Paulista (UNESP)Médici De Mattos, Igor [UNESP]Chaud-Netto, José [UNESP]2022-04-28T22:49:09Z2022-04-28T22:49:09Z2011-07-18info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article85-94Sociobiology, v. 58, n. 1, p. 85-94, 2011.0361-6525http://hdl.handle.net/11449/2264242-s2.0-79960238185Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengSociobiologyinfo:eu-repo/semantics/openAccess2022-04-28T22:49:09Zoai:repositorio.unesp.br:11449/226424Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462022-04-28T22:49:09Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Effects of natural infestations of the mite Varroa, destructor on the development of Africanized honeybee workers (Apis mellifera) |
title |
Effects of natural infestations of the mite Varroa, destructor on the development of Africanized honeybee workers (Apis mellifera) |
spellingShingle |
Effects of natural infestations of the mite Varroa, destructor on the development of Africanized honeybee workers (Apis mellifera) Médici De Mattos, Igor [UNESP] Africanized honeybees Apis mellifera Development Mortality analysis Varroa destructor |
title_short |
Effects of natural infestations of the mite Varroa, destructor on the development of Africanized honeybee workers (Apis mellifera) |
title_full |
Effects of natural infestations of the mite Varroa, destructor on the development of Africanized honeybee workers (Apis mellifera) |
title_fullStr |
Effects of natural infestations of the mite Varroa, destructor on the development of Africanized honeybee workers (Apis mellifera) |
title_full_unstemmed |
Effects of natural infestations of the mite Varroa, destructor on the development of Africanized honeybee workers (Apis mellifera) |
title_sort |
Effects of natural infestations of the mite Varroa, destructor on the development of Africanized honeybee workers (Apis mellifera) |
author |
Médici De Mattos, Igor [UNESP] |
author_facet |
Médici De Mattos, Igor [UNESP] Chaud-Netto, José [UNESP] |
author_role |
author |
author2 |
Chaud-Netto, José [UNESP] |
author2_role |
author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) |
dc.contributor.author.fl_str_mv |
Médici De Mattos, Igor [UNESP] Chaud-Netto, José [UNESP] |
dc.subject.por.fl_str_mv |
Africanized honeybees Apis mellifera Development Mortality analysis Varroa destructor |
topic |
Africanized honeybees Apis mellifera Development Mortality analysis Varroa destructor |
description |
The mite Varroa destructor (Anderson & Treuman 2000) has caused extensive damage to beekeeping worldwide. In Brazil, weather conditions and the strains of bees do not provide ideal conditions for mite parasitism, which is reflected in the low number of deaths of colonies caused by varroatosis well as the stability of infestation levels. The aim of this study was to evaluate the damage caused by the mite infestation in hives maintained in natural conditions. For this purpose the number of mites per bee was calculated and used to quantify the level of infestation in each colony. To record the mortality rates of parasitized bees during development daily checks were performed. The data were analyzed by G test of independence and a Test of Proportions. The results indicate that the rate of mortality of pupae and larvae was proportional to the degree of infestation in each colony, and all colonies showed mortality rates significantly higher than the control rate. A significant interaction among death rates recorded between the third and fourth days of larval life and the total death of larvae was found (G Test - 50.22; P < 0.0001). So, it can be concluded that bee inbreeding contributed significantly to the increase of the larval rate of mortality. In Africanized honeybee colonies infested by the mite Varroa destructor mortality rates in conditions of natural infestation varied from 6.65 to 9.89% in pupae (x̄= 8.78%) and from 6.13 to 13.48% in larvae ( x̄ = 9.91%), against 3.85% and 3.74% in the control colony, respectively. Therefore, in the infested colonies the average rates of mortality caused by the harmful effects of the mite were, respectively, 2.28 times and 2.65 times greater in those two developmental stages. |
publishDate |
2011 |
dc.date.none.fl_str_mv |
2011-07-18 2022-04-28T22:49:09Z 2022-04-28T22:49:09Z |
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 |
Sociobiology, v. 58, n. 1, p. 85-94, 2011. 0361-6525 http://hdl.handle.net/11449/226424 2-s2.0-79960238185 |
identifier_str_mv |
Sociobiology, v. 58, n. 1, p. 85-94, 2011. 0361-6525 2-s2.0-79960238185 |
url |
http://hdl.handle.net/11449/226424 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Sociobiology |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
85-94 |
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 |
|
_version_ |
1799964735565725696 |