Journal of the Marine Biological Association of India

Studies on the reproductive biology of the warm water squid Loligo duvauceli D' Orbigny. 1. Functional morphology of male reproductive system.

Volume 26 Issue 1&2

S. V. M.Abdul Rahim and M. R. Chandran

Abstract

Male reproductive system of Loligo duvauceli resembles in general with those of other squids. This system includes the median testis, the vasdeferens (AVD) the complex spermatophoric organ, the vas efferens (MVD) and the Needham's sac which continues as the posterior vasdeferens (PVD), The whole system is unpaired and shifted to the left side of the mantle cavity except the testis which is median in the apex of the mantle. The system differs from those of other squids in possessing a compact three lobed spermatophoric gland, the extension of the Needhams' sac into a narrow long PVD which is flattened at the terminal part, the absence of the muscular penis and the presence of a hectocotylised arm which is differentiated at the terminal region.

Date : 31-12-1984