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Fig. 11 | Frontiers in Zoology

Fig. 11

From: On latches in biological systems: a comparative morphological and functional study of the retinaculum and the dens lock in Collembola

Fig. 11

Hypothetical mechanism by which retinaculum muscle sets up the latch between retinaculum and dens lock in the species investigated in this study: A, B and C M.a-ret in relaxed state; A Podura aquatica Linnaeus, 1758 [26], B Dicyrtomina ornata (Nicolet, 1842); C Megalothorax minimus Willem, 1900 [50]. D, E and F M.a-ret contracts to set the retinaculum in the dens lock. D Podura aquatica; E Dicyrtomina ornata; F Megalothorax minimus. G, H, I Latched state, the retinaculum is engaged in the dens lock; G Podura aquatica; H Dicyrtomina ornata; I Megalothorax minimus. M: manubrium; D: dens; DL: dens lock; Ct: corpus tenaculi; R: ramus; L1: Lock 1; L2: Lock 2

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