Volume 1 No. 1, 2011
+ Volume 1, 2011
Issue 1
Insight Endocrinology and Metabolism>>  Volume 1 Issue 1, 2011
Influence of Sinus and Mandibular Glands on the Growth and Behaviuor of Ocypode macrocera
Sartaj Ahmad Allayie , S. Ravichandran and Bilal Ahmad Bhat
Abstract: Background: The influence of sinus and mandibular glands on the growth and behaviour of the Ocypode macrocera was studied. Survivals of control and injected (mandibular and cheliped injected) crabs of both sexes were 100% and those of ablated, the survival rate was 60%.While the survival of eyestalk injected crabs of both sexes was 100% and those of ablated males were 80 and 60% in ablated females. Result: Both eyestalk ablation and Injection of mandibular gland extracts increased the food consumption of both the sexes of O. macrocera. Among the three groups used, the maximum weight gain in both the sexes was noticed in eyestalk ablated and mandibular extract injected crabs fed with bivalves and lowest range of weight gain was noticed in crabs fed with crab muscles. The result also showed that females grew faster than males throughout the experiment. Similarly eyestalk ablated crabs had higher indices of heart, mandibular glands and ovary than the control and cheliped injected crabs. Eyestalk ablation has altered the various behaviours of this crab. The feed intake, water intake, forward movements, number of burrows made, escaping movements by sound and escaping movements by touch of these crab between control and ablated differed significantly (p≤0.05). However, behavior like Air bowls through gills between control and ablated crabs differed insignificantly (p≤0.08). Conclusion: Thus, ablation experiments demonstrated that in several crustacean groups, the proximal eyestalk ganglia are important in a variety of behavior patterns.
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Sartaj Ahmad Allayie, S. Ravichandran and Bilal Ahmad Bhat , 2011. Influence of Sinus and Mandibular Glands on the Growth and Behaviuor of Ocypode macrocera. Insight Endocrinology and Metabolism, 1: 7-14
DOI: 10.5567/IEM-IK.2011.7.14
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