International network for natural sciences – research journal
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Mandibular shape variation among different size classes of the ant Camponotus sp.(Hymenoptera: Formicidae)

By: Nur-Aynie B. Bacaraman, Mark Anthony J. Torres

Key Words: Camponotus sp., Allometry, Geometric Morphometrics, Shape.

J. Bio. Env. Sci. 8(3), 179-186, March 2016.


This study was conducted to determine shape differences in the mandibles of different size classes of the ant Camponotus sp.. To do this, landmarks taken from digital images of a total of sixty minor (30) and major worker (30) ants were subjected to the outline-based Geometric Morphometric Analsis of Elliptic Fourier Analysis (EFA). Results showed global shape differences between the two types of worker ants. However, when mandibular shape was regressed with cephalic size, results indicate the negligible role that Allometry play in the disparity between the worker ants. This result suggest that polyethism in this species of ants is not dependent on age.


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