Diet composition changes in tigerfish of Lake Kariba following an invasion by redclaw crayfish

Lightone Marufu, Tatenda Dalu, Crispen Phiri and Tamuka Nhiwatiwa

High dietary plasticity and ontogenetic shifts in the tigerfish Hydrocynus vittatus diet was observed, with historical assessments highlighting a dietary shift from 1969 to present. The invasive crayfish Cherax quadricarinatus can be considered to be forming a significant portion of the tigerfish diet due to its increasing frequency in diet. These findings are of importance as they highlight that tigerfish can potential help in controlling the invasive crayfish abundances.

Ann. Limnol. - Int. J. Lim., 53 (2017) 47-56
DOI: 10.1051/limn/2016033

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