Table 9. Number of Anisakis larvae detected in skipjack tuna (Katsuwonus pelamis) from May 2018 to October 201925).
| Period | Fish samples (A) |
Positive samples (in muscle) |
No. of Anisakis larvae | %, larvae in fish muscle (B/C) |
Mean abundance of larvae in fish muscle (B/A) |
|
| In muscle* (B) |
Total (C) |
|||||
| May, 2018 | 10 | 8 (2) | 13 | 132 | 9.80% | 1.3 |
| (13/132) | (13/10) | |||||
| Aug to Nov, 2018 | 90 | 88 (14) | 47 | 680 | 6.90% | 0.52 |
| (47/680) | (47/90) | |||||
| Apr to Jun, 2019 | 21 | 19 (2) | 2 | 115 | 1.70% | 0.1 |
| (2/115) | (2/21) | |||||
| Jul to Oct, 2019 | 30 | 29 (6) | 8 | 494 | 1.60% | 0.27 |
| (8/494) | (8/30) | |||||
*All larvae in fish muscle were Ansiakis simplex sensu stricto.
Current status of anisakiasis and Anisakis larvae in Tokyo, Japan (Jun Suzuki, Rie Murata, Yukihiro Kodo)