EFFECT OF GAMMA RADIATION ON MORPHOLOGY OF SENSORY STRUCTURES FOR THE ANTENNAE OF Trogoderma granarium (Everts.) ADULTS | ||||
| Journal of Plant Protection and Pathology | ||||
| Article 7, Volume 27, Issue 4, April 2002, Page 2637-2654 PDF (4.99 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jppp.2002.253678 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| a. H Gharieb,; Mai S. EI-Degwi | ||||
| National center For Radiation Research and Technology (NCRRT), P.o. Box. 29, Nasr City, Cairo Egypt. | ||||
| Abstract | ||||
| External morphology of antennal sensilla of both sexes of irradiated and non- irradiated Trogoderma granarium were studied with scanning electron microscopy. The number and distribution of antennal sensilla were also determined. Five types of sensilla could be distinguished on the flagella of both sexes: sensilla chaetica, long trichoid sensilla, short trichoid sensilla, basiconic sensilla I and II. The sensilla chaetica are probable tactile mechanosensila, where as both types of sensilla trichoid and basiconic sensilla type I liekly function in olfaction. Suggested function for basiconic sensilla type II include hygrol thermoreception and chemoreception. The male antenna is considerably larger than that of the female; in both sexes, sensilla on the antennal segments were most abundant on the apical segments, where sensilla trichoid were particularly concentrated. External structure, general distribution and relative number of sensilla in irradiated specimens were affected. One-Day old pupae were more affected by gamma radiation more than 4 - day old. Essential difference were indicating clear sexual dimorphism. In male morphological features were regarded as modification for sex pheromone reception. The effect of sterile dose of gamma radiation on olfactory receptors may reduce the biological activity .of insects. | ||||
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