Nutritional stress legacy in the shrimp Palaemon varians and its implications for aquaculture production

Aquaculture Reports

Liliam Hayd¹  M. Rosário Domingues¹  Eduardo Freitas²  Karla Vercesi³  Fernando Ricardo³  Ricardo Calado³ 

[1] Animal Science Graduate Program, State University of Mato Grosso do Sul, Campus of Aquidauana, 79200-000 Aquidauana, Mato Grosso do Sul, Brazil;Corresponding author.;ECOMARE, CESAM - Centre for Environmental and Marine Studies, Department of Biology, University of Aveiro, Santiago University Campus, 3810-193 Aveiro, Portugal;

关键词: Compensatory growth;    Carry-over effects;    Fatty acids;    Feeding restriction;   

DOI  :  

来源: DOAJ

【 摘 要 】

The Atlantic ditch shrimp Palaemon varians Leach, 1814 is an attractive candidate for caridean shrimp aquaculture production. However, the effects of nutritional stress, in terms of variable food quality and feeding frequency, need to be further elucidated as a viable strategy to improve the production of this species and take advantage of potential mechanisms associated with compensatory growth. As so, the growth performance, time to metamorphosis, and fatty acid (FA) profile of larvae and post-larvae (PL) of P. varians exposed to different nutritional stress scenarios were evaluated. Overall, after experiencing nutritional stress, larvae and PL used the energy from high quality and unrestricted food to molt until the next stage instead of increasing their biomass, as well as to increase their FA contents. Repetitive fasting and feeding may therefore be a good strategy to improve the production of P. varians, at least until the juvenile stage, as this species displays compensatory growth beyond the life stage that experienced feeding restriction.

【 授权许可】

Unknown