Table 1.
Location, date, coordinates, and number of larvae, parasitic nematodes of fall armyworm (FAW) Spodoptera frugiperda and conditions of plants at three surveyed sites in Hainan province, China.
| Date | Location | Coordinates | Total FAW (No.) | Parasitized FAW (No.) | Cornfield size (m2) | Plant height (cm) | Plant status | Planting gap (cm) | Spray insecticide situation |
|---|---|---|---|---|---|---|---|---|---|
| May 08, 2019 | 1 Wuna road, Qiongzhong Li and Miao autonomous county, Hainan Province, China | N 19°2´20˝ E 109°50´40˝ | 43 | 1 | 600 | 35 | The late seedling | 50 | No spray insecticide |
| June 13, 2019 | Qionghai X356, Hainan Province, China | N 19°15´51˝ E 110°28´49˝ | 52 | 1 | 2300 | 120 | Jointing and booting stage | 40 | No spray insecticide |
| June 11, 2019 | Foluo town, Ledong Li autonomous county, Hainan Province, China | N 18°61´97˝ E 108°73´38˝ | 105 | 2 | 990 | 150 | Mature stage | 45 | No spray insecticide |
Figure 1:
Microscopic photo of Ovomermis sinensis. A: Stylet on the anterior portion of post-parasitic juvenile (arrow); B: Tail appendage on post-parasitic juvenile (arrow).
Figure 2:
Post-parasitic juvenile Ovomermis sinensis nematode (scale bar: 1 cm).
Figure 3:
Post-parasitic juvenile Ovomermis sinensis nematode emerging from Spodoptera frugiperda.
Figure 4:
Neighbor-joining tree of the Mermithidae family. The tree was based on 18 S rDNA data and Kimura 2-parameter model; numbers on branches represent bootstrap support (>70%) based on 500 replicates; scale represents K2P genetic distance.
Figure 5:
Neighbor-joining tree of the Mermithidae family. The tree was based on 28 S rDNA data and Kimura 2-parameter model; numbers on branches represent bootstrap support (>70%) based on 500 replicates; scale represents K2P genetic distance.
Figure S1:
Alignment of 18 S sequences for comparative purposes of Ovomermis sinensis from Hainan province showed nucleotide identical to NCBI. Dashes are inferred insertion-deletion and dots indicate identity with the first sequence.