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Titolo:
Changes in the thoracic temperature of honeybees while receiving nectar from foragers collecting at different reward rates
Autore:
Farina, WM; Wainselboim, AJ;
Indirizzi:
Univ Buenos Aires, Fac Ciencias Exactas & Nat, Dept Ciencias Biol, RA-1428Buenos Aires, DF, Argentina Univ Buenos Aires Buenos Aires DF Argentina RA-1428 Aires, DF, Argentina Univ Wurzburg, Lehrstuhl Verhaltensphysiol & Soziobiol, Theodor Boveri Inst, D-97074 Wurzburg, Germany Univ Wurzburg Wurzburg Germany D-97074 i Inst, D-97074 Wurzburg, Germany
Titolo Testata:
JOURNAL OF EXPERIMENTAL BIOLOGY
fascicolo: 9, volume: 204, anno: 2001,
pagine: 1653 - 1658
SICI:
0022-0949(200105)204:9<1653:CITTTO>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
APIS-MELLIFERA L.; THERMAL-BEHAVIOR; FOOD SOURCES; SUCROSE CONCENTRATION; OXYGEN-CONSUMPTION; TROPHALLAXIS; PROFITABILITY;
Keywords:
honeybee; Apis mellifera carnica; foraging; profitability; trophallaxis; information transfer; thermography;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
26
Recensione:
Indirizzi per estratti:
Indirizzo: Farina, WM Univ Buenos Aires, Fac Ciencias Exactas & Nat, Dept Ciencias Biol, Ciudad Univ,C1428EHA, RA-1428 Buenos Aires, DF, Argentina Univ Buenos Aires Ciudad Univ,C1428EHA Buenos Aires DF Argentina RA-1428
Citazione:
W.M. Farina e A.J. Wainselboim, "Changes in the thoracic temperature of honeybees while receiving nectar from foragers collecting at different reward rates", J EXP BIOL, 204(9), 2001, pp. 1653-1658

Abstract

Mouth-to-mouth food exchange in eusocial insects (trophallaxis) contributes to the organization of complex social activities. In the case of honeybees, foragers returning from a nectar source transfer the food collected to receiver colony-mates through oral contact. Previous studies have shown thatthe speed of nectar transfer within each contact (unloading rate) increases when foragers return from feeding sites with higher profitability, i.e. with more concentrated sugar solutions or higher solution flow rates. However, there is no evidence that the nectar unloading rate is actually evaluated by hive-mates during food exchange. To investigate this, trophallaxis between donor bees returning from a feeder with different how rates of sucrosesolution (range 1.0-8.2 mul min(-1) of 50 % w/w sucrose solution) and receiver hive-mates was studied by combining behavioural and infrared thermal analysis. The results show that when foraging bees returned from a feeder delivering a higher how rate they initiated unloading at higher thoracic temperatures and transferred the solution at higher speed. During these food exchanges, the thoraces of receiver bees warmed up faster in proportion to increasing forager temperature and unloading rate. Therefore, whatever the variable actually evaluated by receivers (mostly nectar processors, i.e. beesthat handle nectar in the hive) during trophallaxis (unloading rate and/ordonor thoracic temperature), they raised their activity level in proportion to that of the foragers. In this way, receiver bees will intensify their nectar processing when nectar foragers return from more profitable sites.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/07/20 alle ore 14:27:35