Caste and sex specific olfactory glomerular organization and brain architecture in two sympatric ant species Camponotus sericeus and Camponotus compressus (Fabricius, 1798)

Keshava, M. and Subramanian, K. A. and Sarasij, R. C. and Suresh, Arvind and Shyamala, B. V. and Vijay Raghavan, K. and Rodrigues, Veronica (2009) Caste and sex specific olfactory glomerular organization and brain architecture in two sympatric ant species Camponotus sericeus and Camponotus compressus (Fabricius, 1798). ARTHROPOD STRUCTURE & DEVELOPMENT, 38 (6). pp. 485-497.

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Official URL: http://dx.doi.org/10.1016/j.asd.2009.06.001

Abstract

We use monoclonal antibodies against synaptic proteins and anterograde tracing with neurobiotin to describe the architecture of the antennal lobes in different castes of two ant species - Camponotus sericeus and Camponotus compressus. The reproductives and worker classes are readily categorized based on size and external morphology. The overall organization of brain neuropile is comparable between castes with differences only in the visual ganglia. Males have a larger fraction of neuropile occupied by the medulla and lobula than females. In the diurnal species, C sericeus these regions are more highly represented, than in the nocturnal species C compressus. The most striking differences are in the antennal lobe where males possess a macroglomerulus, which is about ten times larger in volume than the other glomeruli; such a specialization is absent in females. Minor workers possess a significantly larger number of glomeruli than the majors despite the smaller overall volume of the lobe. These caste-specific differences occur mainly within glomerular clusters that receive input from sensory neurons that project in tracts - T4 and T5 - within the antennal nerve. The comparative anatomy of different castes of ants provides an entry point into a future systematic analysis of how divergent brain architectures can arise within a single species. (C) 2009 Elsevier Ltd. All rights reserved.

Item Type: Article
Uncontrolled Keywords: Ants; Antennal lobes; Glomeruli; Morphological 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 1 not found.
Date Deposited: 30 Mar 2013 11:52
Last Modified: 22 Aug 2013 10:25
URI: http://eprints.uni-mysore.ac.in/id/eprint/2665

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