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The Scientific World Journal
Volume 2014 (2014), Article ID 903452, 6 pages
Research Article

Humoral and Haemocytic Responses of Litopenaeus vannamei to Cd Exposure

1Programa Regional del Posgrado en Biotecnología, Facultad de Ciencias Químico Biológicas, Universidad Autónoma de Sinaloa, 80000 Culiacán, Mexico
2Secretaría de Investigación y Posgrado, Universidad Autónoma de Nayarit, Boulevard Tepic-Xalisco S/N, 63000 Tepic, Nayarit, Mexico
3Laboratorio de Estudios Ambientales, Facultad de Ciencias del Mar, Universidad Autónoma de Sinaloa, AP 1132, 82000 Mazatlán, Sinaloa, Mexico
4Laboratorio UAS-CIBNOR, Centro de Investigaciones Biológicas del Noroeste, P.O. Box 1132, 82000 Mazatlán, Sinaloa, Mexico
5Centro de Investigación en Alimentación y Desarrollo, Unidad Mazatlán, Avenida Sábalo-Cerritos S/N, 82010 Mazatlán, Sinaloa, Mexico
6Instituto de Ciencias del Mar y Limnología, Unidad Académica Mazatlán, Universidad Nacional Autónoma de México, P.O. Box 811, 82000 Mazatlán, Sinaloa, Mexico

Received 29 March 2014; Accepted 5 May 2014; Published 19 May 2014

Academic Editor: Lucia Guilhermino

Copyright © 2014 Juan C. Bautista-Covarrubias et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


White shrimp, Litopenaeus vannamei, subadults were exposed to four dilutions of the 96 h cadmium LC50 reported for postlarvae (PL12) of this species, and the effects were evaluated after 5, 48, and 96 h of exposure. While treatments did not affect survival and hemolymph clotting time increased with time, but not as a response to Cd exposure, the intensity of other responses was related to concentration, to time of exposure, and to their interaction. Hemocyanin decreased with time in all metal concentrations but increased in the control treatment, and an almost similar trend was observed with hemocyte numbers. As an initial response, phenoloxidase activity decreased with all metal concentrations, but it increased later to values similar or higher than the control treatment.