Relação entre IGF-I e cortisol no crescimento de peixes teleósteos de produção: revisão sistemática

Abstract

Exposure to stress can lead to reduced productivity in aquaculture. Several physiological changes are triggered in response to stress, and cortisol is a major hormone that can also interfere with the growth hormone/insulin-like growth factor/insulin-like growth factor binding protein (GH/IGF-I/IGFBP). The aim of this systematic review was to assess the relationship between IGF-I and cortisol in teleost fish and thus evaluate the effect of stress stimulus in the production of these animals. The electronic survey was conducted by searching the database Web of Science in March 2010. We analyzed factors related to fish species, type of study (in vivo or in vitro), sample size, method of hormonal quantification for cortisol and IGF-I and type-inducing stress. The quantitative and qualitative assessment of the literature attributed to cortisol a growth inhibition function. Different methods of measuring hormones, along with the differences in the kits used in many studies, and in hormonal concentrations, application of techniques and the diversity of species, created a wide range of reported results.