TY - JOUR AU - Sánchez-Hernández, Javier AU - Cobo, Fernando PY - 2015 DA - 2015/02/18 TI - Adaptive flexibility in the feeding behaviour of brown trout: optimal prey size JO - Zoological Studies SP - 26 VL - 54 IS - 1 AB - Brown trout, Salmo trutta Linnaeus, 1758, is a species of significant conservation and socio-economic importance. A consequence of this importance is the enormous amount of literature that has been published on the species in the last few decades. In general terms, brown trout has been considered as a size-selective predator, even though it is able to feed on a wide range of prey sizes. Nevertheless, there are still some gaps in our knowledge, for example the theoretical relationship between prey numbers and prey sizes eaten by the fish need to be addressed. This research aimed to study optimal prey size in the environment (benthos and drift) as well as the potential relationship between prey size and two other feeding variables (prey numbers and stomach fullness). Additionally, ontogenetic shifts in these variables were addressed. SN - 1810-522X UR - https://doi.org/10.1186/s40555-015-0107-x DO - 10.1186/s40555-015-0107-x ID - Sánchez-Hernández2015 ER -