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Sobre a produção de Novas Rainhas e o acasalamento em Synoeca surinama (Vespidae; Polistinae: Epiponini)

Authors: Santos, Carlos Alberto dos;

Sobre a produção de Novas Rainhas e o acasalamento em Synoeca surinama (Vespidae; Polistinae: Epiponini)

Abstract

The Neotropical tribe Epiponini presents species with caste dimorphism that may be determined pre-imaginally by larval nutritional differences, however, in most species there is no queen/worker dimorphism, being castes determined post-imaginally. In these cases, studies suggest that castes are determined from competitive interactions between the members of the colony, being the reproductive control based on behavioral interactions. In studies conducted in Synoeca surinama, Metapolybia aztecoides and Parachartergus colobopterus, species that present low caste differentiation, newly emerged females are suppressed reproduction by workers and queens and become workers, but if the colony loses all queens, the attacks to decrease and they become queens. These studies, however, are very restricted, with few colonies or a little time of observation. In this work, our studies did not demonstrate that aggressions in most colonies studied and newly emerged females did not received attacks, however, after we remove the queens, workers began the assault on newly emerged females. In the colonies without newly emerged, workers attacked each other, probably by reproductive rights. The group of new queens came from newly emerged who were in the colonies in the critical period of aggression and in the colonies without emergency, new queens came from the group of workers who participated in the assaults, as victims and perpetrators, showing that older workers are also totipotent. The attacks on newly emerged females can be a form of collective control of the workers to avoid the production of a larger number of new queens than it would be great for the colony. We did not see any preimaginal trend based on morphometrics among the new queens and new workers (wasps without ovarian development of the same generation to the new queens). Although we did not perform bioassays, we found indirect evidence that the suppression of...

tribo Neotropical Epiponini apresenta espécies com dimorfismo de castas, provavelmente determinadas pré-imaginalmente por diferenças nutricionais das larvas, no entanto, na maioria das espécies não existe dimorfismo rainhas/operárias, sendo as castas determinadas pósimaginalmente. Nesse caso, estudos sugerem que as castas são determinadas a partir de interações competitivas entre os membros da colônia, sendo o controle reprodutivo baseado em interações comportamentais. Em estudos realizados em Synoeca surinama, Metapolybia aztecoides e Parachartergus colobopterus, espécies que apresentam baixa diferenciação de castas, fêmeas recém-emergidas são suprimidas da reprodução por operárias e rainhas e se tornam operárias, mas se a colônia perde as rainhas, as agressões diminuem e elas se tornam rainhas. Em contraste, não observamos agressões na maioria das colônias de S. surinama aqui estudadas e fêmeas recém-emergidas não receberam agressões, porém, após removermos as rainhas, operárias iniciaram as agressões sobre recém-emergidas. Nas colônias sem recémemergidas, operárias se agrediram, provavelmente por direitos reprodutivos. O grupo de novas rainhas veio das recém-emergidas que se encontravam nas colônias no período crítico de agressões e nas colônias sem emergência, novas rainhas vieram do grupo de operárias que participaram das agressões, como agredidas e agressoras, mostrando que operárias mais velhas também são totipotentes. As agressões sobre recém-emergidas pode ser uma forma de controle coletivo das operárias para evitar a produção de um maior número de novas rainhas que seria ótimo para a colônia. Nós não verificamos nenhuma tendência pré-imaginal morfométrica entre as novas rainhas e novas operárias (operárias da mesma geração que as novas rainhas). Apesar de não realizarmos bioensaios, nós encontramos evidências indiretas que a...

Pós-graduação em Biologia Animal - IBILCE

Country
Brazil
Keywords

Vespa, Ecologia animal, Acasalamento de animais, Vespa - Comportamento, Vespa - Reprodução, Sociedades de insetos

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green