Parabiosis is defined as a special symbiosis, so far known only from a few Neotropical ant species, in which two or more species occupy the same nest site and forage together while keeping brood separate. In Brazil the foraging and feeding interactions in two previously reported cases of parabiosis have been reexamined. The two cases both include what was considered to be a single species ofCrematogaster (limata var.parabiotica) nesting respectively withMonacis debilis andCamponotus femoratus. Previous reports that the ants forage and feed together peacefully appear to be incorrect. This paper reports thatCrematogaster is aggressively displaced at artificially provided sugar water and dead insect food sources by its associates. TheMonacis andCamponotus also follow the recruitment trails ofCrematogaster to new food sources. TheCrematogaster nesting with each symbiont have been found to be morphologically distinct and they evidently comprise distinct species. The nature of the symbiosis is reexamined in view of the aggressive competition over food sources.
- 1 - sciences appliquees, technologies et medecines
- 2 - sciences biologiques et medicales
- 3 - sciences biologiques fondamentales et appliquees. psychologie
- 4 - immunologie fondamentale
- 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Insect Science
- 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Ecology, Evolution, Behavior and Systematics