PREVALENCE OF PARASITES IN FARMED WHITE SHRIMP (PENAEUS VANNAMEI) IN TWO FARMS ON THE WEST COAST FROM THE FALCON STATE, VENEZUELA

• Edison Pascal LAMAR Group (Aquaculture Health and Quality Group), Mauroa, Falcón, Venezuela, Parasitological Research Unit, Faculty of Veterinary Sciences, University of Zulia (FCV-LUZ), Maracaibo, Venezuela
• Helimar Vásquez Parasitological Research Unit, Faculty of Veterinary Sciences, University of Zulia (FCV-LUZ)
• Nadiany Castillo LAMAR Group (Aquaculture Health and Quality Group), Mauroa, Falcón, Venezuela Experimental Faculty of Sciences, University of Zulia (FEC-LUZ), Maracaibo, Venezuela
• Yerley Sandrea LAMAR Group (Aquaculture Health and Quality Group), Mauroa, Falcón, Venezuela
• Katherine Ferrer LAMAR Group (Aquaculture Health and Quality Group), Mauroa, Falcón, Venezuela

DOI: https://doi.org/10.5281/zenodo.7423301

Keywords: Parasites, Prevalence, Protozoa, Shrimp

Abstract

The farmed white shrimp (Penaeus vannamei) is a decapod crustacean widely used in aquaculture. There are different types of diseases and etiological agents that affect farmed shrimp, among which are parasitic diseases. From this perspective, important efforts have been made to determine the prevalence of diseases in the different production areas of the planet, including wild species that can serve as parasite vectors of parasites. The objective of this research was to determine the prevalence of parasitosis in farmed white shrimp (P. vannamei) in two farms in the West Coast of Falcon State, in the West Coast of Falcon State, Venezuela. Animals were collected from farms in the study area (two farms in the study area (two farms) at a time interval of 3 months. time interval of 3 months. The farms were identified as G1 and G2, respectively, and 700 animals were animals on each farm. To obtain the prevalence of parasitic diseases, the formula used by Morales et al. (2011) and by Peña and Varela (2011), and Peña and Varela (2016) was used. Three parasites were described in the monitored farms, Nematopsis sp. sp (Apicomplexa), Zoothamnium sp (Ciliophora) and Leucothrix mucor (Thiotrichales). After laboratory analysis, prevalences of 12.85% for L. mucor, 95 25.55% for Zoothamnium sp and 25.55% for Leucothrix mucor were obtained in G1; for Zoothamnium sp and 21.81% for Nematopsis sp. In G2, a prevalence of 12.85% for L. mucor sp. was obtained. sp. In G2, prevalences of 82.30% were obtained for L. mucor, 5.53% for Zoothamnium sp and 21.81% for Nematopsis sp. L. mucor, 5.53% for Zoothamnium sp and 8.30% for Nematopsis sp. The differences between the prevalences of G1 and G2 could be due to differences in water conditions between the two farms. water conditions between the two controlled farms

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