Variation in Vibrio parahaemolyticus isolates from a single Thai shrimp farm experiencing an outbreak of acute hepatopancreatic necrosis disease (AHPND)

Histopatología diferencial de tres enfermedades bacterianas que afectan el hepatopáncreas de camarones peneidos.

“…Finalmente, durante la fase terminal (Figura 2) de la infección, se generalizó la destrucción del hepatopáncreas por la acción bacterial, con una severa infiltración hemocítica intra y extratubular acompañada de melanosis y necrosis, y se presentaron infecciones bacteriales secundarias masivas y multifocales (Cuéllar-Anjel et al, 2012;Joshi et al, 2014;Tran et al, 2013;Pantoja, 2014;Pantoja y Lightner, 2014;Varela y Peña, 2014b).…”

“…La AHPND es causada por una cepa altamente virulenta de Vibrio parahaemolyticus (Tran et al, 2013;Joshi et al, 2014;Pantoja y Lightner, 2014;Han et al, 2015a). Esta cepa bacterial es portadora de un plásmido de aproximadamente 69 kb, responsable de la síntesis de toxinas con actividad proteolítica, las cuales dañan en forma irreversible al hepatopáncreas, generando desprendimientos celulares masivos.…”

Efficacy of Natural Herbal Formulation against Acute Hepatopancreatic Necrosis Disease (AHPND) causing Vibrio parahaemolyticus in Penaeus vannamei

“…8 Whereas, there are possibilities of more than one strain of V. parahemolyticus or isolates of other Vibrio species carrying the pathogenic genes (PIR A and PIR B) to cause symptoms like AHPND in shrimp. 8,17,18 …”

Back to the Basics: Biomimicry in Shrimp Farming

“…Despite the quantum leap in production in the last decade, the rising graph of shrimp production has been severely punctuated by diseases, especially the White Spot Syndrome Virus causing heavy mortalities in the South east Asian countries (Lightner, 1999), Taura Syndrome Virus in Ecuador (Brock et al, 1997), the outbreak of Infectious Myonecrosis Virus in northeast Brazil (Lightner and Pantoja, 2004) and more recently, yellow head virus (YHV) (Senapin et al, 2010) that causes yellow head disease (YHD), Early mortality syndrome (EMS) or acute hepatopancreatic necrosis disease (AHPND) outbreak in China, Thailand, Vietnam and Mexico (Joshi et al, 2014;Nunan et al, 2014;Soto-Rodriguez et al, 2015), hepatopancreatic microsporidiosis (HPM), hepatopancreatic haplosporidiosis (HPH), aggregated transformed microvilli (ATM) and covert mortality disease (CMD) in South east Asian countries (Thitamadee et al, 2016). A summary of recent diseases in aquaculture has been given in Table 1.…”