Scanning Electron Microscopic Observation of the in Vitro Cultured Protozoan, Perkinsus Olseni, Isolated from the Manila Clam, Ruditapes Philippinarum

Overview

Journal BMC Microbiol

Publisher Biomed Central

Specialty Microbiology

Date 2020 Aug 5

PMID 32746776

Citations 2

Authors

Dinesh Gajamange

Seung-Hyeon Kim

Kwang-Sik Choi

Carlos Azevedo

Kyung-Il Park

Affiliations

Soon will be listed here.

Abstract

Background: Perkinsosis is a major disease affecting the commercially important marine mollusk Ruditapes philippinarum (Manila clam) in Asian waters. In this study, we investigated the morphological characteristics of Perkinsus olseni, the causative agent of perkinsosis, cultured under laboratory conditions at different stages of its life cycle using a scanning electron microscope (SEM).

Results: The prezoosporangia formed after induction with Ray's fluid thioglycollate medium (RFTM) developed into zoosporangia. During this process, a discharge tube formed a porous sponge-like structure that detached before the zoospores were released; thus, this organelle operated as a bung. Liberated zoospores gradually transformed into immature trophozoites, during which detachment of the anterior flagella occurred, but the loss of the posterior flagella was not clearly observed in the present study. Mature trophozoites underwent schizogony by cleaving the cell forming some merozoites in schizonts, which were released by the rupturing of the cellular membrane of the schizont within a few days.

Conclusions: Our morphological and ultrastructural studies contribute new information on the life cycle and propagation of P. olseni.

Citing Articles

A highly sensitive and specific real-time quantitative polymerase chain reaction assay for Perkinsus marinus detection in oysters.

Kim S, Bathige S, Kim H, Jeon H, Lee J, Park K Sci Rep. 2024; 14(1):25475.

PMID: 39462051 PMC: 11513098. DOI: 10.1038/s41598-024-76822-y.

Correction to: Scanning electron microscopic observation of the in vitro cultured protozoan, Perkinsus olseni, isolated from the Manila clam, Ruditapes philippinarum.

Gajamange D, Kim S, Choi K, Azevedo C, Park K BMC Microbiol. 2020; 20(1):289.

PMID: 32948122 PMC: 7499867. DOI: 10.1186/s12866-020-01978-2.

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