Hemocytic enteritis in Litopenaeus vannamei (Crustacea Decapoda) raised in low salinity water in Tamaulipas, Mexico

Authors

  • Gilberto J. Gutiérrez-Salazar Universidad Autónoma de Tamaulipas, Facultad de Medicina Veterinaria y Zootecnia, Laboratorio de Acuacultura, Carretera Victoria-Mante Km 5, Cd. Victoria, Tamaulipas. 87000. México.
  • Lucio Galaviz -Silva Universidad Autónoma de Nuevo León, Facultad de Ciencias Biológicas, Unidad B Laboratorio de Patología Molecular, Ave. Universidad, SN, Cd. Universitaria, San Nicolás de los Garza, Nuevo León. 66451. México
  • Francisco M. Guzmán- Sáenz Universidad Autónoma de Tamaulipas, Facultad de Medicina Veterinaria y Zootecnia, Laboratorio de Acuacultura, Carretera Victoria-Mante Km 5, Cd. Victoria, Tamaulipas. 87000. México.
  • Mario Hernández -Acosta Universidad Tecnológica del Mar de Tamaulipas Bicentenario, La Pesca, Tamaulipas CP. 87678. México.
  • Luke A. Roy School of Fisheries, Aquaculture, and Aquatic Sciences, 203 Swingle Hall, Auburn University, Auburn, Alabama 36849. USA.

Keywords:

Hemocytic enteritis, Litopenaeus vannamei, low salinity

Abstract

The present study assessed the presence of hemocytic enteritis in Litopenaeus vannamei from a shrimp farm which uses semi-intensive culture with underground low salinity water, located at an urban zone
of Reynosa, Tamaulipas, Mexico. Histopathological analyses showed characteristic lesions of hemocytic enteritis with a prevalence of 4.0% (12/300). Lesions were observed in midgut epithelium, showing accumulation of hemocytic cells, causing diffuse hemocytic infiltration throughout the gut wall, and were associated with epithelial necrosis and inflammation. The hepatopancreas was also affected, displaying
focal pyknotic nuclei with quasi-geometric shape in hepatopancreas tubules. These clinical signs were present in all affected organisms and suggest toxicity resulting from Benomyl® with contamination occurring either directly and/or indirectly via the water source for the shrimp farm which is located in the most important and productive zone of sorghum (Sorghum vulgare) in the northeast of Mexico. This constitutes the first report of hemocytic enteritis in the coastal zone of the Gulf of Mexico.

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How to Cite

Gutiérrez-Salazar, G. J., Galaviz -Silva, L., Guzmán- Sáenz, F. M., Hernández -Acosta, M., & Roy, L. A. (2016). Hemocytic enteritis in Litopenaeus vannamei (Crustacea Decapoda) raised in low salinity water in Tamaulipas, Mexico. HIDROBIOLÓGICA, 25(1), 139–145. Retrieved from https://hidrobiologica.izt.uam.mx/index.php/revHidro/article/view/469

Issue

Section

Nota Científica