Ecology Distribution Management Info Impact Info References and Links Contacts

Click here to go back Details of this species in Volta Grande Reservoir Status: Native Invasiveness: Invasive Occurrence: Established Source: Gomiero and Braga, 2004 Arrival Date: Introduction: Species Notes for this Location: Management Notes for this Location: Location Notes: Impacts: Ecosystem change: Depending on its abundance levels, Cichla ocellaris causes varying degrees of modification in autochthonous fishes populations. , C. ocellaris is a typical piscivorous fish, with direct impact observable in secondary consumer populations. Indirectly, other trophic levels are affected: the fishes fed upon by the predator and, in turn, ichthyophagous birds, insects, and the zooplankton (Gomiero and Braga, 2004). Reduction in native biodiversity: According to Godinho et al (1994), the richness of species in lakes following tucunaré and piranha introduction declined almost 50% in relation to what it had been and was smaller than that found on lakes without introductions (Gomiero and Braga, 2004). Last Modified: 21/04/2006 8:44:28 a.m.