Table 7 Reported length and width measurements of microfilaria of Dirofilaria immitis, D. repensa, Acanthocheilonema reconditum, and A. dracunculoidesa recovered by modified Knott (formalin fixed)
Measurement (μm) | Dirofilaria immitis | Dirofilaria repens a | Acanthocheilonema reconditum | Acanthocheilonema dracunculoides a | Reference |
|---|---|---|---|---|---|
Length | 295–325 | 268–360 | 250–288 | 189–230 | [39] |
|  | 290–330 | 300–360 | 260–283 | 190–247 | [42] |
|  | 295–308 | 359–380 | 259–270 | 253–266 | [43] |
|  | 307–332 | 360 | 246–292 | ~ 300 | [45] |
|  | 231–288b | 302–344b | NR | NR | [46] |
|  | ≥ 315 | NR | < 290 | < 290 | [68] |
|  | 280–320 | NR | 215–270 | NR | [69] |
Width | 5.0–7.5 | 5.0–8.0 | 4.5–5.5 | 5.0–6.0 | [39] |
|  | 5.0–7.0 | 6.0–8.0 | 4.0 | 4.0–6.5 | [42] |
|  | 6.0–6.6 | 8.3–9.5 | 4.1–5.1 | 4.6–5.6 | [43] |
|  | 6.8 | 12.0 | 4.7–5.8 | NR | [45] |
|  | 6.1–7.2 | NR | 4.7–5.8 | NR | [69] |
|  | 6.0–7.0 | NR | < 5.6 | NR | [70] |