Changes in food source profitability affect Nasonov gland exposure in honeybee foragers Apis Mellifera L

When arriving at a known artificial food source, foraging honeybees usually perform circular flights around the feeding place prior to landing. During these flights bees expose their Nasonov gland, an exocrine gland located at the base of the 7th tergum, that releases a complex blend of volatiles. T...

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Detalles Bibliográficos
Autores principales: Fernández, Patricia C., Farina, Walter Marcelo
Publicado: 2001
Materias:
Apis mellifera
Communication
Foraging
Honeybees
Nasonov gland
feeding behavior
foraging behavior
honeybee
Apoidea
Formicidae
Hymenoptera
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00201812_v48_n4_p366_Fernandez
http://hdl.handle.net/20.500.12110/paper_00201812_v48_n4_p366_Fernandez
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00201812_v48_n4_p366_Fernandez
record_format dspace
spelling paper:paper_00201812_v48_n4_p366_Fernandez2023-06-08T14:40:56Z Changes in food source profitability affect Nasonov gland exposure in honeybee foragers Apis Mellifera L Fernández, Patricia C. Farina, Walter Marcelo Apis mellifera Communication Foraging Honeybees Nasonov gland feeding behavior foraging behavior honeybee Apis mellifera Apoidea Formicidae Hymenoptera When arriving at a known artificial food source, foraging honeybees usually perform circular flights around the feeding place prior to landing. During these flights bees expose their Nasonov gland, an exocrine gland located at the base of the 7th tergum, that releases a complex blend of volatiles. This behavior may continue even after the bee starts food ingestion. The proportion of bees exposing the Nasonov gland and the duration of its exposure before and during feeding for individual bees were quantified. Trained bees collected sugar solution during 12 visits from a feeder located at 160 m from the hive. Five different reward programs were presented: Three constant and two variable. The constant programs offered 0.6, 1.2 or 2.4 M sugar for all 12 visits, while the variable programs delivered either 0.6, 1.2, 0.6 M or 0.6, 2.4, 0.6 M, four visits for each molarity. Results showed that sugar concentration changed the thresholds and durations of Nasonov gland exposure. However, this relationship was found only for Nasonov exposure before bees began to feed. During feeding, a protruded Nasonov gland was only observed for bees that had exposed it prior to feeding; suggesting that Nasonov gland exposure before feeding is a releaser of the during-feeding exposure. In variable reward programs, changes in sugar concentration were followed by changes in both thresholds and durations of exposure. However, Nasonov gland exposure during feeding did not appear to decrease based on measurements of the low profitability during the current foraging visit. These results suggest that Nasonov gland exposure is programmed on the basis of reward expectations, with the bees having acquired this information in the previous foraging visits to the food source. Fil:Fernández, P.C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Farina, W.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2001 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00201812_v48_n4_p366_Fernandez http://hdl.handle.net/20.500.12110/paper_00201812_v48_n4_p366_Fernandez
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Apis mellifera
Communication
Foraging
Honeybees
Nasonov gland
feeding behavior
foraging behavior
honeybee
Apis mellifera
Apoidea
Formicidae
Hymenoptera
spellingShingle Apis mellifera
Communication
Foraging
Honeybees
Nasonov gland
feeding behavior
foraging behavior
honeybee
Apis mellifera
Apoidea
Formicidae
Hymenoptera
Fernández, Patricia C.
Farina, Walter Marcelo
Changes in food source profitability affect Nasonov gland exposure in honeybee foragers Apis Mellifera L
topic_facet Apis mellifera
Communication
Foraging
Honeybees
Nasonov gland
feeding behavior
foraging behavior
honeybee
Apis mellifera
Apoidea
Formicidae
Hymenoptera
description When arriving at a known artificial food source, foraging honeybees usually perform circular flights around the feeding place prior to landing. During these flights bees expose their Nasonov gland, an exocrine gland located at the base of the 7th tergum, that releases a complex blend of volatiles. This behavior may continue even after the bee starts food ingestion. The proportion of bees exposing the Nasonov gland and the duration of its exposure before and during feeding for individual bees were quantified. Trained bees collected sugar solution during 12 visits from a feeder located at 160 m from the hive. Five different reward programs were presented: Three constant and two variable. The constant programs offered 0.6, 1.2 or 2.4 M sugar for all 12 visits, while the variable programs delivered either 0.6, 1.2, 0.6 M or 0.6, 2.4, 0.6 M, four visits for each molarity. Results showed that sugar concentration changed the thresholds and durations of Nasonov gland exposure. However, this relationship was found only for Nasonov exposure before bees began to feed. During feeding, a protruded Nasonov gland was only observed for bees that had exposed it prior to feeding; suggesting that Nasonov gland exposure before feeding is a releaser of the during-feeding exposure. In variable reward programs, changes in sugar concentration were followed by changes in both thresholds and durations of exposure. However, Nasonov gland exposure during feeding did not appear to decrease based on measurements of the low profitability during the current foraging visit. These results suggest that Nasonov gland exposure is programmed on the basis of reward expectations, with the bees having acquired this information in the previous foraging visits to the food source.
author Fernández, Patricia C.
Farina, Walter Marcelo
author_facet Fernández, Patricia C.
Farina, Walter Marcelo
author_sort Fernández, Patricia C.
title Changes in food source profitability affect Nasonov gland exposure in honeybee foragers Apis Mellifera L
title_short Changes in food source profitability affect Nasonov gland exposure in honeybee foragers Apis Mellifera L
title_full Changes in food source profitability affect Nasonov gland exposure in honeybee foragers Apis Mellifera L
title_fullStr Changes in food source profitability affect Nasonov gland exposure in honeybee foragers Apis Mellifera L
title_full_unstemmed Changes in food source profitability affect Nasonov gland exposure in honeybee foragers Apis Mellifera L
title_sort changes in food source profitability affect nasonov gland exposure in honeybee foragers apis mellifera l
publishDate 2001
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00201812_v48_n4_p366_Fernandez
http://hdl.handle.net/20.500.12110/paper_00201812_v48_n4_p366_Fernandez
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AT farinawaltermarcelo changesinfoodsourceprofitabilityaffectnasonovglandexposureinhoneybeeforagersapismelliferal
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