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Multiple queens in founding colonies of the neotropical ant Pachycondyla striata smith (Formicidae: Ponerinae) Neotropical Entomology
Rodrigues,MS; Vilela,EF; Azevedo,DO; Hora,RR.
In social insects, the typical mode of colony foundation occurs when a single queen is inseminated by a male and establishes a new colony, although we can find interspecific and intraspecific variations in queen number and queen-mating frequencies in a single colony. This study aimed to verify the queen number in Pachycondyla striata (Smith) colonies and to evaluate the level of aggressiveness among workers. We collected 14 colonies of P. striata. The behaviors of individuals from five multiple-queen colonies maintained in laboratory were studied by the method of scan sampling. In order to evaluate aggressiveness, dyadic encounters among heterocolonial and homocolonial workers were performed. The results showed that colonies of P. striata can have two or...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cooperative breeding; Pleometrosis; Polydomy; Aggressiveness.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2011000300001
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Occurrence and natural history of Myrmelachista Roger (Formicidae: Formicinae) in the Atlantic Forest of southeastern Brazil RChHN
AKEMI NAKANO,MÁRCIA; OLIVEIRA DE MIRANDA,VITOR F; RODRIGUES DE SOUZA,DÉBORA; FEITOSA,RODRIGO M; MORINI,M. SANTINA C.
Information on the biology of the species in Myrmelachista remains notably scarce. The objective of this study was to report the occurrence, analyze the influence of canopy cover on the number of nests in twigs in the litter describe behavioral characteristics of this genus. Hand sampling was performed on trees and twigs deposited in the litter. A total of 84 nests and seven species were found. Myrmelachista ruszkii and M. catharinae were the most frequent and abundant species. In trees, most of the nests were located at the tips of dry twigs, and these nests were probably the source of the nests found in the litter of fragments of Atlantic Forest of southeastern Brazil. Canopy cover is associated with the number of nests that were in twigs.
Tipo: Journal article Palavras-chave: Canopy; Dense ombrophilous forest; Polydomy; Reproduction; Tree species.
Ano: 2013 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2013000200006
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