| parasites of the fish cichla piquiti (cichlidae) in native and invaded brazilian basins: release not from the enemy, but from its effects. | the enemy release hypothesis is frequently used to explain the success of invaders, postulating that introduced species have escaped from their native enemies, including parasites. here, we tested this hypothesis for the tucunaré (cichla piquiti), a predatory cichlid, and its endoparasites. first, the parasites and their influence on the condition of the hosts in the native environment, the tocantins river (to), were compared to an environment where the fish was introduced, the paraná river (pr) ... | 2013 | 23052767 |
| comparative parasitism of the fish plagioscion squamosissimus in native and invaded river basins. | biological invasions are considered a major threat to biodiversity around the world, but the role of parasites in this process is still little investigated. here, we compared parasite infections of a host species in the areas where it originated and where it was introduced, and in native and introduced species in the same environment, using the endoparasites of the fish plagioscion squamosissimus (sciaenidae) in 3 brazilian basins. samples were taken in 2 rivers where the species is native, i.e. ... | 2012 | 22468610 |