In addition, an acidified seawater environment might allow a pH gradient produced by a bacterial colony to be more effective, given a lower imposed pH environment at the opening of the organule canals or incipient imperfections in the calcite layer or calcite-CAP interface.
Our model provides an imperative for efficient phosphate investment (1) as organule canal walls protecting secretion and neurosensory communication and (2) as phosphatic trabeculae to be associated with the well-described (Waddy et al.
The organule concept of insect sense organs: sensory transduction and organule evolution.
This birefringent outer layer of mainly calcite appears continuous, but is punctuated at regular, but widely spread intervals by simple dermal glands with single CAP-lined canal openings, and interspersed with compound organules (Lawrence 1966) that combine sensory bristles with accompanying dermal glands (Fig.
How the lesions initiate in the plane between organules is not easy to envision or approach experimentally.