Effects of low salinity exposure on immunological,physiological and growth performance in Litopenaeus vannamei |
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| Authors: | Hctor M Esparza‐Leal Jesús T Ponce‐Palafox Carlos M Cervantes‐Cervantes Wenceslao Valenzuela‐Quinez Antonio Luna‐Gonzlez Ely S Lpez‐lvarez Nadia Vzquez‐Montoya Mariel Lpez‐Espinoza Rosa L Gmez‐Peraza |
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| Institution: | Héctor M. Esparza‐Leal,Jesús T. Ponce‐Palafox,Carlos M. Cervantes‐Cervantes,Wenceslao Valenzuela‐Quiñónez,Antonio Luna‐González,Ely S. López‐Álvarez,Nadia Vázquez‐Montoya,Mariel López‐Espinoza,Rosa L. Gómez‐Peraza |
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| 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. |
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| Keywords: | immune and physiological response
Litopenaeus vannamei
salinity |
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