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Division of labor in colonies of the eusocial wasp, Mischocyttarus consimilis.

Torres VO, Montagna TS, Raizer J, Antonialli-Junior WF - J. Insect Sci. (2012)

Bottom Line: In order to observe temporal polyethism, each newly emerged wasp was marked with colored dots on the upper area of the thorax.This allowed the observation of behavioral acts performed by each worker from the time of emergence to its death.Hybrid multidimensional scaling characterized two groups, with intra-nest activities preferentially accomplished by younger workers, while extra-nest activities such as foraging were executed more frequently by older workers.

View Article: PubMed Central - PubMed

Affiliation: Laboratório de Ecologia, Centro Integrado de Análise e Monitoramento Ambiental, Universidade Estadual de Mato Grosso do Sul, 351, 79804-907, Dourados-MS, Brazil. vivianabio@yahoo.com.br

ABSTRACT
The division of labor between castes and the division of labor in workers according to age (temporal polyethism) in social wasps are crucial for maintaining social organization. This study evaluated the division of labor between castes, and the temporal polyethism in workers of Mischocyttarus consimilis Zikán (Hymenoptera: Vespidae). To describe the behavioral repertory of this species, observations were made of 21 colonies, with 100 hours of observations. In order to observe temporal polyethism, each newly emerged wasp was marked with colored dots on the upper area of the thorax. This allowed the observation of behavioral acts performed by each worker from the time of emergence to its death. Through hybrid multidimensional scaling, a clear division between queens and workers could be identified, in which the behaviors of physical dominance and food solicitation characterized the queen caste; while behaviors such as adult-adult trophallaxis, destruction of cells, alarm, foraging for prey, foraging for nectar, and unsuccessful foraging characterized the worker caste. Hybrid multidimensional scaling characterized two groups, with intra-nest activities preferentially accomplished by younger workers, while extra-nest activities such as foraging were executed more frequently by older workers.

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Differences in the relative frequency of records of each behavior between queens and workers in 21 colonies of Mischocyttarus consimilis. Each dot represents a colony. Positive values (right of the vertical line) indicate higher frequency of the behavior in queens, and negative values (left of the vertical line) indicate higher frequency of the behavior in workers. High quality figures are available online.
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f01_01: Differences in the relative frequency of records of each behavior between queens and workers in 21 colonies of Mischocyttarus consimilis. Each dot represents a colony. Positive values (right of the vertical line) indicate higher frequency of the behavior in queens, and negative values (left of the vertical line) indicate higher frequency of the behavior in workers. High quality figures are available online.

Mentions: The behaviors were not described individually, since the behavioral repertory (Figure 1) is similar to descriptions in previous studies, such as that of Jeanne (1972) with M. drewseni, Giannotti (1999) with M. cerberus styx, Giannotti and Machado (1999) with Polistes lanio, Zara and Balestieri (2000) with P. versicolor, and Torres et al. (2009) with P. canadensis canadensis. However, definitions of those behaviors in which the meaning is vague are described below in Figure 1.


Division of labor in colonies of the eusocial wasp, Mischocyttarus consimilis.

Torres VO, Montagna TS, Raizer J, Antonialli-Junior WF - J. Insect Sci. (2012)

Differences in the relative frequency of records of each behavior between queens and workers in 21 colonies of Mischocyttarus consimilis. Each dot represents a colony. Positive values (right of the vertical line) indicate higher frequency of the behavior in queens, and negative values (left of the vertical line) indicate higher frequency of the behavior in workers. High quality figures are available online.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3472919&req=5

f01_01: Differences in the relative frequency of records of each behavior between queens and workers in 21 colonies of Mischocyttarus consimilis. Each dot represents a colony. Positive values (right of the vertical line) indicate higher frequency of the behavior in queens, and negative values (left of the vertical line) indicate higher frequency of the behavior in workers. High quality figures are available online.
Mentions: The behaviors were not described individually, since the behavioral repertory (Figure 1) is similar to descriptions in previous studies, such as that of Jeanne (1972) with M. drewseni, Giannotti (1999) with M. cerberus styx, Giannotti and Machado (1999) with Polistes lanio, Zara and Balestieri (2000) with P. versicolor, and Torres et al. (2009) with P. canadensis canadensis. However, definitions of those behaviors in which the meaning is vague are described below in Figure 1.

Bottom Line: In order to observe temporal polyethism, each newly emerged wasp was marked with colored dots on the upper area of the thorax.This allowed the observation of behavioral acts performed by each worker from the time of emergence to its death.Hybrid multidimensional scaling characterized two groups, with intra-nest activities preferentially accomplished by younger workers, while extra-nest activities such as foraging were executed more frequently by older workers.

View Article: PubMed Central - PubMed

Affiliation: Laboratório de Ecologia, Centro Integrado de Análise e Monitoramento Ambiental, Universidade Estadual de Mato Grosso do Sul, 351, 79804-907, Dourados-MS, Brazil. vivianabio@yahoo.com.br

ABSTRACT
The division of labor between castes and the division of labor in workers according to age (temporal polyethism) in social wasps are crucial for maintaining social organization. This study evaluated the division of labor between castes, and the temporal polyethism in workers of Mischocyttarus consimilis Zikán (Hymenoptera: Vespidae). To describe the behavioral repertory of this species, observations were made of 21 colonies, with 100 hours of observations. In order to observe temporal polyethism, each newly emerged wasp was marked with colored dots on the upper area of the thorax. This allowed the observation of behavioral acts performed by each worker from the time of emergence to its death. Through hybrid multidimensional scaling, a clear division between queens and workers could be identified, in which the behaviors of physical dominance and food solicitation characterized the queen caste; while behaviors such as adult-adult trophallaxis, destruction of cells, alarm, foraging for prey, foraging for nectar, and unsuccessful foraging characterized the worker caste. Hybrid multidimensional scaling characterized two groups, with intra-nest activities preferentially accomplished by younger workers, while extra-nest activities such as foraging were executed more frequently by older workers.

Show MeSH