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/11449/245591 |
Resumo: | Previous studies by our research group verified the beneficial effects of zinc supplementation on honey bee colonies during off-season. 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 off-season. 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.Funda��o de Amparo � Pesquisa do Estado de S�o Paulo (FAPESP)UNESP Seto Paulo State Univ, Coll Vet Med & Anim Sci, Ctr Educ Sci & Technol Rat Beekeeping NECTAR, Botucatu, SP, BrazilUNESP Sao Paulo State Univ, Inst Biosci, Dept Morphol, Botucatu, SP, BrazilUNESP Seto Paulo State Univ, Coll Vet Med & Anim Sci, Ctr Educ Sci & Technol Rat Beekeeping NECTAR, Botucatu, SP, BrazilUNESP Sao Paulo State Univ, Inst Biosci, Dept Morphol, Botucatu, SP, BrazilFAPESP: 2014/14699-9Alma Mater Studiorum, Univ BolognaUniversidade Estadual Paulista (UNESP)Carillo, Marcela Pedraza [UNESP]Astolfi, Aline [UNESP]Damasceno Rodrigues, Edgar Junio [UNESP]Castro Lippi, Isabella Cristina de [UNESP]Ribeiro da Silva, Leticia Garbin [UNESP]Guimaraes, Matheus Gardim [UNESP]Justulin, Luiz Antonio [UNESP]Orsi, Ricardo de Oliveira [UNESP]2023-07-29T11:59:20Z2023-07-29T11:59:20Z2022-06-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article27-31Bulletin of Insectology. Bologna: Alma Mater Studiorum, Univ Bologna, v. 75, n. 1, p. 27-31, 2022.1721-8861http://hdl.handle.net/11449/245591WOS:000938783000005Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengBulletin Of Insectologyinfo:eu-repo/semantics/openAccess2023-07-29T11:59:20Zoai:repositorio.unesp.br:11449/245591Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T17:12:43.479507Repositório 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] Damasceno Rodrigues, Edgar Junio [UNESP] Castro Lippi, Isabella Cristina de [UNESP] Ribeiro da Silva, Leticia Garbin [UNESP] Guimaraes, Matheus Gardim [UNESP] Justulin, Luiz Antonio [UNESP] Orsi, Ricardo de Oliveira [UNESP] |
author_role |
author |
author2 |
Astolfi, Aline [UNESP] Damasceno Rodrigues, Edgar Junio [UNESP] Castro Lippi, Isabella Cristina de [UNESP] Ribeiro da Silva, Leticia Garbin [UNESP] Guimaraes, Matheus Gardim [UNESP] Justulin, Luiz Antonio [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] Damasceno Rodrigues, Edgar Junio [UNESP] Castro Lippi, Isabella Cristina de [UNESP] Ribeiro da Silva, Leticia Garbin [UNESP] Guimaraes, Matheus Gardim [UNESP] Justulin, Luiz Antonio [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 off-season. 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 |
2022-06-01 2023-07-29T11:59:20Z 2023-07-29T11:59:20Z |
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. Bologna: Alma Mater Studiorum, Univ Bologna, v. 75, n. 1, p. 27-31, 2022. 1721-8861 http://hdl.handle.net/11449/245591 WOS:000938783000005 |
identifier_str_mv |
Bulletin of Insectology. Bologna: Alma Mater Studiorum, Univ Bologna, v. 75, n. 1, p. 27-31, 2022. 1721-8861 WOS:000938783000005 |
url |
http://hdl.handle.net/11449/245591 |
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.publisher.none.fl_str_mv |
Alma Mater Studiorum, Univ Bologna |
publisher.none.fl_str_mv |
Alma Mater Studiorum, Univ Bologna |
dc.source.none.fl_str_mv |
Web of Science 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_ |
1808128773210505216 |