Table 5 The frequencies of morphologically abnormal epididymal spermatozoa in wild mice (Apodemus speciosus) during the breeding season.
2013 | 2014 | |||||||
|---|---|---|---|---|---|---|---|---|
Fukushima | Aomori | Toyama | Fukushima | Aomori | Toyama | |||
Site 1 (14) | Site 2 (5) | Site 3 (27) | Site 4 (20) | Site 1 (10) | Site 2 (8) | Site 3 (5) | Site 4 (8) | |
Abnormal head frequency (%) | 0 (0–1) | 1 (0–2) | 0 (0–3) | 1 (0–3) | 0 (0–1) | 0 (0–4) | 0 (0–1) | 0 (0–2) |
Abnormal midpiece frequency (%) | 14 (6–55) | 12 (8–29) | 13 (6–25) | 15 (3–33) | 15 (12–34) | 18 (4–37) | 19 (12–30) | 17 (5–22) |
Abnormal tail frequency (%) | 3 (0–14) | 4 (0–8) | 4 (0–10) | 5 (1–14) | 4 (1–13) | 5 (1–19) | 1 (1–8) | 5 (1–17) |
Normal morphology frequency (%) | 84 (40–92) | 85 (66–87) | 85(72–91) | 82 (61–91) | 82 (53–87) | 78 (57–91) | 78 (69–87) | 79 (66–94) |
