High doses of inorganic zinc modulate the hypopharyngeal glands of Apis mellifera but promote abandonment of colonies when offered over long periods
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://hdl.handle.net/11449/234367 |
Resumo: | Previous studies by our research group verified the beneficial effects of zinc supplementation on honey bee colonies during offseason. Here, we used high concentrations of inorganic zinc to evaluate the effects of high levels of zinc supplementation on hypopharyngeal gland (HPG) development of Apis mellifera L. during off-season. Twelve colonies were randomly assigned to one of four experimental diets (0 ppm Zn, 500 ppm Zn, 1000 ppm Zn, and 1500 ppm Zn) with three replicates. Honey bees received 500 mL of diet supplement with or without an inorganic source of zinc (sulfate heptahydrate, 20% zinc) once a week for 60 days. After the experimental period, 20 worker bees (6-days-old nurse bees) were sampled from each colony for HPG development analysis. Zinc, regardless of the level, increased the average area of acini compared to the non-supplemented group. However, gradual colony population reduction was visually observed after approximately 90 days, suggesting that Zn supplementation at high concentrations may exert a toxic effect. Therefore, although zinc can positively modulate HPG, the zinc supplements must be administered with caution. |
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High doses of inorganic zinc modulate the hypopharyngeal glands of Apis mellifera but promote abandonment of colonies when offered over long periodsbeekeepingmineral supplementationnutritionproteinPrevious studies by our research group verified the beneficial effects of zinc supplementation on honey bee colonies during offseason. Here, we used high concentrations of inorganic zinc to evaluate the effects of high levels of zinc supplementation on hypopharyngeal gland (HPG) development of Apis mellifera L. during off-season. Twelve colonies were randomly assigned to one of four experimental diets (0 ppm Zn, 500 ppm Zn, 1000 ppm Zn, and 1500 ppm Zn) with three replicates. Honey bees received 500 mL of diet supplement with or without an inorganic source of zinc (sulfate heptahydrate, 20% zinc) once a week for 60 days. After the experimental period, 20 worker bees (6-days-old nurse bees) were sampled from each colony for HPG development analysis. Zinc, regardless of the level, increased the average area of acini compared to the non-supplemented group. However, gradual colony population reduction was visually observed after approximately 90 days, suggesting that Zn supplementation at high concentrations may exert a toxic effect. Therefore, although zinc can positively modulate HPG, the zinc supplements must be administered with caution.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Center of Education Science and Technology in Rational Beekeeping (NECTAR) College of Veterinary Medicine and Animal Sciences UNESP-São Paulo State UniversityInstitute of Biosciences Department of Morphology UNESP-São Paulo State UniversityCenter of Education Science and Technology in Rational Beekeeping (NECTAR) College of Veterinary Medicine and Animal Sciences UNESP-São Paulo State UniversityInstitute of Biosciences Department of Morphology UNESP-São Paulo State UniversityFAPESP: 2014/14699-9Universidade Estadual Paulista (UNESP)Carillo, Marcela Pedraza [UNESP]Astolfi, Aline [UNESP]Rodrigues, Edgar Junio Damasceno [UNESP]Lippi, Isabella Cristina de Castro [UNESP]da SILVA, Letícia Garbin Ribeiro [UNESP]Guimarães, Matheus Gardim [UNESP]Justulin, Luiz Antônio [UNESP]Orsi, Ricardo de Oliveira [UNESP]2022-05-01T16:48:42Z2022-05-01T16:48:42Z2022-06-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article27-31Bulletin of Insectology, v. 75, n. 1, p. 27-31, 2022.2283-03321721-8861http://hdl.handle.net/11449/2343672-s2.0-85127782214Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengBulletin of Insectologyinfo:eu-repo/semantics/openAccess2024-09-09T13:00:18Zoai:repositorio.unesp.br:11449/234367Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestrepositoriounesp@unesp.bropendoar:29462024-09-09T13:00:18Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
High doses of inorganic zinc modulate the hypopharyngeal glands of Apis mellifera but promote abandonment of colonies when offered over long periods |
title |
High doses of inorganic zinc modulate the hypopharyngeal glands of Apis mellifera but promote abandonment of colonies when offered over long periods |
spellingShingle |
High doses of inorganic zinc modulate the hypopharyngeal glands of Apis mellifera but promote abandonment of colonies when offered over long periods Carillo, Marcela Pedraza [UNESP] beekeeping mineral supplementation nutrition protein |
title_short |
High doses of inorganic zinc modulate the hypopharyngeal glands of Apis mellifera but promote abandonment of colonies when offered over long periods |
title_full |
High doses of inorganic zinc modulate the hypopharyngeal glands of Apis mellifera but promote abandonment of colonies when offered over long periods |
title_fullStr |
High doses of inorganic zinc modulate the hypopharyngeal glands of Apis mellifera but promote abandonment of colonies when offered over long periods |
title_full_unstemmed |
High doses of inorganic zinc modulate the hypopharyngeal glands of Apis mellifera but promote abandonment of colonies when offered over long periods |
title_sort |
High doses of inorganic zinc modulate the hypopharyngeal glands of Apis mellifera but promote abandonment of colonies when offered over long periods |
author |
Carillo, Marcela Pedraza [UNESP] |
author_facet |
Carillo, Marcela Pedraza [UNESP] Astolfi, Aline [UNESP] Rodrigues, Edgar Junio Damasceno [UNESP] Lippi, Isabella Cristina de Castro [UNESP] da SILVA, Letícia Garbin Ribeiro [UNESP] Guimarães, Matheus Gardim [UNESP] Justulin, Luiz Antônio [UNESP] Orsi, Ricardo de Oliveira [UNESP] |
author_role |
author |
author2 |
Astolfi, Aline [UNESP] Rodrigues, Edgar Junio Damasceno [UNESP] Lippi, Isabella Cristina de Castro [UNESP] da SILVA, Letícia Garbin Ribeiro [UNESP] Guimarães, Matheus Gardim [UNESP] Justulin, Luiz Antônio [UNESP] Orsi, Ricardo de Oliveira [UNESP] |
author2_role |
author author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) |
dc.contributor.author.fl_str_mv |
Carillo, Marcela Pedraza [UNESP] Astolfi, Aline [UNESP] Rodrigues, Edgar Junio Damasceno [UNESP] Lippi, Isabella Cristina de Castro [UNESP] da SILVA, Letícia Garbin Ribeiro [UNESP] Guimarães, Matheus Gardim [UNESP] Justulin, Luiz Antônio [UNESP] Orsi, Ricardo de Oliveira [UNESP] |
dc.subject.por.fl_str_mv |
beekeeping mineral supplementation nutrition protein |
topic |
beekeeping mineral supplementation nutrition protein |
description |
Previous studies by our research group verified the beneficial effects of zinc supplementation on honey bee colonies during offseason. Here, we used high concentrations of inorganic zinc to evaluate the effects of high levels of zinc supplementation on hypopharyngeal gland (HPG) development of Apis mellifera L. during off-season. Twelve colonies were randomly assigned to one of four experimental diets (0 ppm Zn, 500 ppm Zn, 1000 ppm Zn, and 1500 ppm Zn) with three replicates. Honey bees received 500 mL of diet supplement with or without an inorganic source of zinc (sulfate heptahydrate, 20% zinc) once a week for 60 days. After the experimental period, 20 worker bees (6-days-old nurse bees) were sampled from each colony for HPG development analysis. Zinc, regardless of the level, increased the average area of acini compared to the non-supplemented group. However, gradual colony population reduction was visually observed after approximately 90 days, suggesting that Zn supplementation at high concentrations may exert a toxic effect. Therefore, although zinc can positively modulate HPG, the zinc supplements must be administered with caution. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-05-01T16:48:42Z 2022-05-01T16:48:42Z 2022-06-01 |
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 |
Bulletin of Insectology, v. 75, n. 1, p. 27-31, 2022. 2283-0332 1721-8861 http://hdl.handle.net/11449/234367 2-s2.0-85127782214 |
identifier_str_mv |
Bulletin of Insectology, v. 75, n. 1, p. 27-31, 2022. 2283-0332 1721-8861 2-s2.0-85127782214 |
url |
http://hdl.handle.net/11449/234367 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Bulletin of Insectology |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
27-31 |
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 |
repositoriounesp@unesp.br |
_version_ |
1810021309738909696 |