Morphological and developmental analysis of peripheral antennal chemosensory sensilla and central olfactory glomeruli in worker castes of Camponotus compressus (Fabricius, 1787)

Keshava, M. and Shyamala, B. V. and Rodrigues, Veronica (2010) Morphological and developmental analysis of peripheral antennal chemosensory sensilla and central olfactory glomeruli in worker castes of Camponotus compressus (Fabricius, 1787). ARTHROPOD STRUCTURE & DEVELOPMENT, 39 (5). pp. 310-321.

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Official URL: http://dx.doi.org/10.1016/j.asd.2010.04.003

Abstract

The antennal lobes of different castes of the ant species Camponotus compressus show a marked diversity in the organization of their olfactory glomeruli. Notably, there is a significant difference in the number and size of glomeruli between the reproductives and the workers and among the different worker castes. In this report, we investigate the notion that these caste-specific differences in glomerular number might be accounted for, at least in part, by the differences in numbers of olfactory sensilla that target the antenna! lobe. For this, we examine the number of sensilla on the antenna! flagella of all the individual castes of C. compressus. This analysis reveals a striking correlation between sensillar number and the number of antennal glomeruli in a given caste. As a first step in investigating the causal mechanisms that might give raise to this correlation, we carry out an initial characterization of olfactory system development in the minor workers of C. compressus. We analyze the temporal pattern of innervations of the developing antennal lobe by olfactory sensory neuron axons. We document the development of the olfactory glomeruli in the antennal lobe during this process, which occurs during early pupal stages. Our findings provide the basis for future manipulative developmental studies on the role of sensory afferent number in glomerular development of different castes within the same species. (C) 2010 Elsevier Ltd. All rights reserved.

Item Type: Article
Uncontrolled Keywords: C. compressus; Sense organs; Antennal lobes; Antennal lobe glomeruli; Worker castes
Subjects: Agriculture Biological Sciences > Zoology
University of Mysore > PG Campuses > Manasagangotri, Mysore > Agriculture Biological Sciences > Zoology
Divisions: PG Campuses > Manasagangotri, Mysore > Zoology
Depositing User: Users 7 not found.
Date Deposited: 26 Mar 2013 05:57
Last Modified: 22 Aug 2013 10:24
URI: http://eprints.uni-mysore.ac.in/id/eprint/2516

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