PubAg

Main content area

Effects of low salinity exposure on immunological, physiological and growth performance in Litopenaeus vannamei

Author:
Esparza‐Leal, Héctor M., Ponce‐Palafox, Jesús T., Cervantes‐Cervantes, Carlos M., Valenzuela‐Quiñónez, Wenceslao, Luna‐González, Antonio, López‐Álvarez, Ely S., Vázquez‐Montoya, Nadia, López‐Espinoza, Mariel, Gómez‐Peraza, Rosa L.
Source:
Aquaculture research 2019 v.50 no.3 pp. 944-950
ISSN:
1355-557X
Subject:
Litopenaeus vannamei, glucose, growth performance, hemocytes, immune system, pathogens, protein value, rearing, salinity, shrimp, stocking rate
Abstract:
Growth, immunological and physiological parameters of white shrimp Litopenaeus vannamei reared at different salinity levels (1, 10, 15, 25 and 35 g/L) at stocking density of 214 shrimp/m³ were examined at 1, 30 and 63 days. Results showed that the total haemocyte count (THC) of shrimp decreased with time at all salinity levels, indicating a potential reduction in the resistance of shrimp against pathogens, since a low value of THC indicates a perturbation of the immune system. Glucose and protein values observed in the haemolymph throughout the study indicate that shrimp adapted well to low salinities (1, 10 and 15 g/L). Although of those shrimp reared at 10 g/L only 83.3% survived, at this salinity, shrimp depicted a higher glucose concentration in haemolymph at the beginning and end of the study.
Agid:
6296487