Patterns of laying behaviour and control of oviposition in insects: further experiments onSphodromantis lineola(Dictyoptera)

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Abstract
Contrasting patterns of egg-laying behaviour in representatives of three orders of insects are governed by a common sequence of neuroendocrine and neural mechanisms, although these mechanisms are adapted to particular situations. The oviposition process is triggered by the cephalic region which is affected by different factors, depending on the species. It involves the release of neurohormones acting on the genital ducts and, in certain cases, on the last abdominal ganglion. This ganglion regulates the final laying process by neural mechanisms. The investigation was extended using the insect Sphodromantis lineola (Dictyoptera). The more complicated the laying procedure, the more important is this regulation.