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Title: Histological, sensory and behavioural changes associated with wound healing in locusts
Author: Ali, Y.
Awarding Body: University College of Swansea
Current Institution: Swansea University
Date of Award: 1979
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After unilateral injury to the frons of adult locusts, their orientation to a lamp was unaffected for two hours. From 2-4 hours they turned the injured side away from a lamp. From 24 hours to five days they turned the injured side towards it; after that the injured side was turned away again. The amount of injury did not affect the response appreciably. Fifth instar nymphs gave the same results until they moulted, when normality was restored. In the absence of injury, nociceptive thresholds for various parts of the body were similar. The sensitivity of some parts (frons and abdomen) tested by a behavioural method after injury varied with time like the orientation behaviour. Electrophysiological experiments on the normal and injured abdomen also gave corresponding results. A subcuticular plexus of multipolar neurones is found in many parts of the locust body, with dendrites penetrating the endocuticle. The nymphs have a similar system and so do cockroaches. Dipteran and Lepidopteran larvae have a different, subepidermal system. A wound in the locust integument is closed and covered by new cuticle after five days. Axons apparently arising from new subcuticular neurones join the nervous system at that time.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available