|
|
|
|
|
| DIEHL,ELENA; JUNQUEIRA,LUCIANE K.. |
| Mechanisms involved in maintaining colonies of social insects free of pathogens are among the main aspects of interest in the evolutionary biology of this group. For ants, it has been suggested that secretion from the metapleural glands play an important role in colony asepsis. In this study, different worker subcastes of the fungus-growing ant Atta sexdens piriventris Santschi were compared in relation to presence of metapleural secretion during a year. At the same time, the topical activity of the secretion was tested on workers treated with the entomopathogenic fungus Beauveria bassiana (Bals.) Vuillemin. Based on the mean width of the cephalic capsule, six worker subcastes were defined: gardener, minor, media, large, major and soldier. A positive... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Insecta; Fungus-growing ants; Metapleural gland; Entomopathogenic fungus; Biological control. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2001000400002 |
| |
|
|
| Araújo,Márcio Silva; Della Lucia,Terezinha M.C.; Mayhé-Nunes,Antônio José. |
| Seven nests of T. fuscus Emery, 1834 have been studied for their structure. These nests, which opened at the soil surface, had two to four chambers located one above the other. Externally all of these nests presented a heap of brownish-yellow debris that was constituted basically by remains of vegetable material. The total nest population was, on average, 1,048 individuais. The diel pattern of foraging of this species was studied for four consecuti ve months on two nests. This activity occurred predominantly in the night period, and the workers transported, mainly, dry vegetation to the nest. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Attini; Fungus-growing ants; Caracterization of nest; Foraging activity. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752002000200008 |
| |
|
|
|
