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1 August 2018 First Report of an Eosinophilic Rickettsia-like Organism in Diseased Oysters Crassostrea gigas
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Abstract
Eosinophilic Rickettsia-like organisms (E-RLO) were found for the first time in sick oysters of the species Crassostrea gigas, grown in Laguna de San Ignacio, Baja California Sur, Mexico, in August 2014. This work presents the histological description of development of bacteria in parasitophorous vacuoles of infected cells. Confirmative diagnosis was performed by polymerase chain reaction and in situ hybridization. Bacterial growth started with eosinophilic granules (colonial), followed by the formation and growth of intracytoplasmic inclusions. The presence of E-RLO was detected in the gill epithelium, mantle, labial palps, digestive tract, and both male and female gametes. This work describes for the first time an E-RLO in C. gigas with potential vertical transmission.
Liliana Carvalho-Saucedo, Ilie Sava Racotta Dimitrov, Carmen Rodríguez Jaramillo, Alejandra Garcia-Gasca and Jesús N. Gutiérrez-Rivera "First Report of an Eosinophilic Rickettsia-like Organism in Diseased Oysters Crassostrea gigas," Journal of Shellfish Research 37(3), (1 August 2018). https://doi.org/10.2983/035.037.0306
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