Figure 3.
Mechanical Displacement of Spider Trichobothria
Trichobothria in Erigone.
(A) Diagram of a spider illustrating locations of metatarsal trichobothria and locations for non-contact laser Doppler vibrometry measurement (stars).
(B) Scanning electron microscopy image of adult male Erigone metatarsi and trichobothria, with a close-up view of trichobothrium (inset). Arrows point to the base of trichobothrium. MT, metatarsus; T, tarsus.
(C–H) Displacement of trichobothria in response to 0.5 ms−1 air flow (C and D), pseudo-DC efield (E and F), and 1 Hz sine e-field (G and H) measured using laser Doppler vibrometry (LDV). (C), (E), and (G) show single traces, and (D), (F), and (H) show the mean (black) and SD (gray). n = 6 (D), n = 5 (F), and n = 4 (H). Gray dashed lines indicate the stimulus.