Morphometric characteristics in the horseshoe crab Tachypleus gigas (Arthropoda : Merostomata)

The relationships observed between total carapace length with carapace widt h, carapace weight, telson length, body weight were found statistically sig nificant (p < 0.05) in the male and female horseshoe crab, Tachypleus gigas (Muller). In females, increase in weight was found to follow the cube law strictly. The carapace width grew faster at higher carapace length in femal es whereas, carapace weight in males was more at lower carapace. In general , a proportional increment in morphometry was seen with increase in age.