The relationship between prey sizes and larvae mouths was
analyzed by regressing the smallest dimension (that is DL) of the
largest prey identified in the gut of each larvae and MH, MW, and TL of
larvae, as described in Bremigan and Stein (1994). The slopes of the
relations identified in this way were validated using an F-test. In this
approach the smallest dimension of the prey was considered as the
discriminant parameter for ingestion. Considering that the preys
identified in the gut of larvae were chewed or partially digested, they
were not measured and, therefore, the measurements collected for the
conspecific harvested and wild preys were used to perform the
regression against the mouth gape of fish larvae.