Influencia de la alimentación en la supervivencia y crecimiento de juveniles de Isostichopus fuscus

Abstract

The overexploitation of Isostichopus fuscus has reduced its natural populations, making the development of sustainable conservation strategies necessary. Their low survival rates in aquaculture, associated with inadequate feeding, poses a significant challenge. This project evaluated the effect of substrate and algae on the survival and growth of Isostichopus fuscus juveniles through experimental trials aimed at developing a feeding protocol. Thirteen juveniles per replicate were maintained under controlled conditions at CENAIM and subjected to seven treatments involving macroalgae (Padina sp. and Ulva lactuca), microalgae (Navicula sp. and Mix), sea urchin feces, and substrates (sand, clay). The 28-day bioassays showed that Padina sp. significantly enhanced growth, while sea urchin feces improved survival. The addition of substrates had no significant impact. These findings highlight the potential of Padina sp. and organic matter (sea urchin feces) in feeding protocols that contribute to the recovery of Isostichopus fuscus and reduce pressure on wild populations. Keywords: Isostichopus fuscus, survival, growth, feeding, sustainable aquaculture.