Occurrence of Enterocytozoon hepatopenaei (EHP) infection on Penaeus vannamei in one rearing cycle
| Autor: | Muhammad Hafiz Borkhanuddin, Wan Muhammad Hazim Wan Sajiri, Beng-Chu Kua |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
China
Veterinary medicine India Production cycle Aquatic Science 03 medical and health sciences Penaeidae Spore wall Enterocytozoon hepatopenaei Asian country Animals Parasite hosting Penaeus Ecology Evolution Behavior and Systematics 030304 developmental biology 0303 health sciences biology 04 agricultural and veterinary sciences Enterocytozoon Thailand biology.organism_classification Hatchery Shrimp Vietnam Indonesia 040102 fisheries 0401 agriculture forestry and fisheries |
| Zdroj: | Diseases of Aquatic Organisms. 144:1-7 |
| ISSN: | 1616-1580 0177-5103 |
| DOI: | 10.3354/dao03571 |
| Popis: | The microsporidian parasite Enterocytozoon hepatopenaei (EHP) is an emerging problem in the marine shrimp industry, primarily in Asian countries such as China, Thailand, India, Malaysia, Indonesia, and Vietnam. A screening was conducted to investigate the prevalence of EHP after a fixed period of culturing for 1 rearing cycle in 3 states of Malaysia. The screening stages covered Penaeus vannamei post larvae (PL) and after 14-30, 31-50, 51-70, and 71-90 d of culture in 1 production cycle. A total of 279 samples were amplified using a PCR assay targeting the gene encoding a spore wall protein (SWP) of EHP. The EHP infection was initially detected in the hatchery and increased to 96.6% after the shrimp were transferred to the pond. The positive EHP sequence showed 91 to 100% similarity to sequences from India, Thailand, Vietnam, Indonesia, and Latin America. EHP infection increased throughout 1 rearing cycle due to factors such as the cannibalistic feeding habits of shrimp and the presence of unknown vectors or carriers of EHP in the culture ponds. Hence, the finding from the current study will be fundamental for other studies concerning EHP. |
| Databáze: | OpenAIRE |
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