زيست شناسي توليد مثل صدف دسته چاقويي در سواحل شمالي خليج فارس

Reproductive biology of razor clam solen roseomaculatus (Pilsbry,1901) in north Persian Gulf

Razor clam Solen roseomaculatus has an abundant frequency in east coast of the Hormozgan province (North Persian Gulf). Maturation and spawning were recorded according to macroscopic and weight index evidences. Samples of razor clam were captured monthly (14 months) during 2001 and 2002 . Anterior posterior measurement (APM) and dorsoventral measurements (PVM) were recorded and total weight and visceral mass weight were measured for each specimens. Was 72±6 and APM was 8 ±0.4 for all samples . Mean total weight was about 68 ±11. Results revealed that spawning time was take place during Autumn and Summer with peak in June. Longitudinal ovaries were covered by muscular fibers and over the alimentary canal . Sex ratio was about 1 (F) :1.1(M) during the sampling period (X2 = 1.7 oc= o.os/df = i). Length of first maturity were recorded as 46 and 51 for males and females respectively.