scholarly journals ASPECTOS DA AGRESSIVIDADE EM Polistes canadensis (LINNEAUS) (HYMENOPTERA: VESPIDAE)

2017 ◽  
Author(s):  
Philippe Meireles Queiroz
Keyword(s):  
Polistes Fuscatus

Na etologia, são reconhecidos dois tipos de explicações causais para os comportamentos dos animais: as explicações proximais apelam para variáveis motivacionais, experiências e genótipos, como causas, enquanto que as explicações finais referem-se a pressões de seleção e outros fatores que causam a evolução do comportamento (MAYR, 1961). As variáveis motivacionais, representam estímulos externos (de entrada no sistema) como as condições climáticas, que podem ser usados para explicar o comportamento dos animais (ENQUIST et al., 2005). Assim como os padrões rítmicos de atividades diárias em alguns insetos para o forrageio de abelhas, detalhados em alguns estudos, com Melipona scutellaris e Frieseomelitta doederleini (GOUW & GIMENES, 2013), logo, é necessário realizar mais pesquisas com outros comportamentos associando com os fatores climáticos para que possa entender suas causas proximais.O sistema de dominância tem uma grande importância na vida dos animais sociais, governando não apenas o padrão de sua interação social, mas onde e quando eles se movem ou descansam, onde e o que eles comem, e com que sucesso eles se reproduzem (ROWEL, 1974). Assim a agressão é um comportamento muito presente em algumas vespas, como em Polistíneos, onde a rainha e as operárias, as utilizam para estabelecer um sistema de dominância. Em trabalhos com Poliste galicus, Polistes canadensis e Polistes fuscatus foi possível observar um sistema de dominância linear, entre os membros da colônia, a partir de atividades agressivas (PARDI, 1948; WEST-EBERHARD, 1969).Sendo assim, este projeto teve como objetivo, analisar vários aspectos associados com o comportamento agressivo de Polistes canadensis na colônia, levando-se em conta a influência dos fatores externos (intensidade luminosa, umidade relativa e temperatura) e internos (número de indivíduos e células no ninho, número de ninhos satélites) ao longo do dia e de diferentes meses do ano.

The timing of conflict and cooperation among cofoundresses of the social wasp Polistes fuscatus (Hymenoptera: Vespidae)

1996 ◽  
Vol 74 (1) ◽  
pp. 70-74 ◽  
Author(s):  
George J. Gamboa ◽  
Katherine A. Stump
Keyword(s):  
Social Wasp ◽  
Adaptive Significance ◽  
Field Observations ◽  
Polistes Fuscatus ◽  
Conflict And Cooperation ◽  
Colony Cycle ◽  
The Social ◽  
Theoretical Predictions ◽  
Ecological Pressure ◽  
Temporal Overlap

Field observations were made on 37 preworker, multiple-foundress colonies of the social wasp Polistes fuscatus. In total, 401.9 h of behavioural observations of cofoundresses were conducted at three different periods prior to the emergence of workers. Cofoundresses displayed a marked, significant increase in aggression at about the time in the colony cycle when reproductive-destined eggs began to be laid. Both queens and their subordinates became increasingly aggressive at this time. These empirical results support theoretical predictions that conflict among cofoundresses would intensify over the production of reproductive-destined (but not worker-destined) eggs. Cooperation in foraging to minimize nest inattendance as well as synchronicity (temporal overlap) in activity also increased significantly at the onset of the production of reproductive-destined eggs. Thus, conflict and cooperation are not necessarily antagonistic in P. fuscatus. Foundresses minimized the time that nests are unattended at a time in the colony cycle when most conspecific usurpations occur. This suggests that the ecological pressure of conspecific usurpation has favoured increased coordination in foraging to minimize the time nests are unattended. The adaptive significance, if any, of an increase in synchronicity of activity among cofoundresses at the onset of the production of reproductives is not obvious.

The disappearance of subordinate foundresses in paper wasps: eviction by nestmates or reproductive strategy?

1999 ◽  
Vol 77 (12) ◽  
pp. 1928-1933 ◽  
Author(s):  
George J Gamboa ◽  
Janet L Savoyard ◽  
Laura M Panek
Keyword(s):  
Reproductive Strategy ◽  
Indirect Evidence ◽  
Social Wasp ◽  
Time Interval ◽  
Paper Wasps ◽  
Polistes Fuscatus ◽  
Colony Cycle ◽  
The Social ◽  
Behavioural Evidence ◽  
Related Mortality

Videotaped observations (371.3 h) were conducted in 1995, 1996, and 1997 on 50 multiple-foundress colonies of the social wasp Polistes fuscatus. Observations were made during the mid-preworker, late-preworker, and early-postworker stages of the colony cycle. The vast majority of lost subordinate cofoundresses (62 of 77) disappeared during the time interval from 2 weeks before to 4 weeks after the emergence of the first workers. The loss of subordinates did not appear to be the result of senescence or foraging-related mortality. Lost subordinates were from productive and presumably healthy colonies. In colonies containing two or more subordinates, lost subordinates had significantly greater dominance ranks than expected. There was no behavioural evidence that lost subordinates were evicted from their colony by queens, other subordinate foundresses, or workers. Lost subordinates were not observed to renest, join sister colonies, or adopt orphaned nests. Our results indicate that lost subordinates leave colonies of their own volition. Indirect evidence from other studies suggests that subordinates may disperse and usurp colonies from other sites.

Queen Regulation of Worker Foraging in Paper Wasps: a Social Feedback Control System (Polistes Fuscatus, Hymenoptera: Vespidae)

Behaviour ◽  
1987 ◽  
Vol 102 (3-4) ◽  
pp. 147-167 ◽  
Author(s):  
Hudson K. Reeve ◽  
George J. Gamboa
Keyword(s):  
Feedback Control ◽  
Social Regulation ◽  
Paper Wasps ◽  
Social Feedback ◽  
Polistes Fuscatus ◽  
Primitively Eusocial Wasp ◽  
The Social ◽  
Eusocial Wasp ◽  
Single Worker ◽  
Primitively Eusocial

AbstractWe examined the queen's role in regulation of worker foraging in small field colonies of the primitively eusocial wasp, Polistes fuscatus (29 colonies; 148 h observation). Queen removal results in a significant reduction in worker departure rate. The placement of a cooled, inactive queen into her queenless nest produces a significantly greater reduction in worker departure rate than does queen removal, and the resumption of activity by an inactive queen causes a significant increase in worker departure rate. Removal or cooling of a single worker does not produce similar effects on worker foraging, suggesting that the queen is the central regulator of worker foraging in small P. fuscatus colonies. We present evidence that: (1) the queen's control of worker foraging is mediated primarily by her influence on worker nest activity, (2) queen aggression may be important in stimulating departures by workers with low tendencies to leave the nest (i.e., dominant workers), and (3) the magnitude of the queen's stimulatory influence on worker foraging is directly related to the number of workers on the nest. We integrate these results with evidence from our other studies of polistine colony dynamics in a feedback control model of the social regulation of foraging.

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