Native fish, Cichlasoma istlanum , hide for longer, move and eat less in the presence of a non-native fish, Amatitlania nigrofasciata

摘要: Introduction of non-native species is a problem worldwide. Local populations the Mexican mojarra, Cichlasoma istlanum, have been hypothesized to be negatively affected by introduction convict fish, Amatitlania nigrofasciata. The mojarra cichlid fish native Balsas-River Basin. As first approach understand behavioral effect on we experimentally studied responses latter when exposed former. Thus, recorded refuge use, swimming activity and feeding rate in presence conspecific, alone. used refuges for longer, swum shorter ate less than with conspecifics or Because prolonged use habitat may deprive opportunities feed, grow, reproduce, hypothesize that can affect fitness former where two co-occur.