Fig 1.
Morphological characters of Steinernema feltiae at zero concentration of Nemafric-BL phytonematicide.
1: Body length; 2: Stoma; 3: Excretory pore to anterior end; 4: Pharynx; 5: Rectum; 6: Anal body diameter; 7: Tail (All measurements were in μm).
Fig 2.
Positive quadratic curve for Steinernema feltiae body length against Nemafric-BL phytonematicide, with log-transformed (untransformed) extremum at 2.80% (5.60%).
Fig 3.
Positive quadratic relations in Steinernema feltiae De Man ratios versus Nemafric-BL phytonematicide: Ratio a (C = A/B) as proportion of body length (A) to mid-body diameter (B), ratio b (E = D/E) as proportion of body length (D) to pharynx length (E), ratio c (I = G/H) as proportion of body length (G) to tail length (H) and ratio c' (L = J/K) as proportion of tail length (J) to anal body diameter (K).
Table 1.
Extrema for Nemafric-BL phytonematicide concentration to generate optimum/minimum morphometrics for organs in Steinernema feltiae infective juveniles.
Fig 4.
Negative quadratic relations in Steinernema feltiae selected morphometric against Nemafric-BL phytonematicide: Neck base diameter (A), mid-body diameter (B), stoma length (C), anal body diameter (D), tail length (E), head width (F), cuticle thickness (G) and pharynx length (H).
Fig 5.
Negative linear relation in Steinernema feltiae excretory pore to anterior end length versus Nemafric-BL phytonematicide.
Fig 6.
Cross-section of a nematode showing cuticle, muscles and internal organs in pseudocoelom cavity (Improved from Shokoohi, 2019).