| Parasite | Unknown organism |
|---|---|
| Taxonomy | Unknown |
| Host | Common octopus (Octopus vulgaris） |
| Infection site | Muscle in the arm |
| Clinical sign | White fusiform cysts are observed (Fig. 1). |
| Parasitology | The cyst is filled with numerous round structures (ca. 20 μm in diameter), which some are cracked into 2 pieces at the central line (Fig. 2). |
| Pathology | Unknown |
| Health hazard | Unknown (probably no harmful to human) |
| Other information | The organism was found in the fillet of ‘iwadako (small immature common octopus utilized for octopus balls). |
Fig. 2. Parasitic organisms packed in the cyst.
Fig. 1. White cysts (arrows) in the octopus arm.