Accession Number : AD0666987

Title :   ECOLOGY OF MOLLUSCS AND THE CULTURE OF MYA ARENARIA,

Corporate Author : GENERAL DYNAMICS CORP GROTON CONN ELECTRIC BOAT DIV

Personal Author(s) : Zuraw,Edward A. ; Leone,Donald E. ; Griscom,Clement A.

Report Date : 11 DEC 1967

Pagination or Media Count : 123

Abstract : Exploratory investigations were conducted on ecological factors governing distribution of molluscs in a salt pond. Analytical treatment of wind and current data indicated that although wind-driven circulation is of sufficient magnitude to distribute mollusc larvae throughout the pond, mollusc distribution is favored in upwind regions. A mollusc census confirmed that molluscs do occur in greater abundance in upwind regions. During the census, significantly larger numbers of molluscs were found in sand sediments as compared to mud sediments. Straight-hinge larvae were observed from May through October, at three widely scattered stations on the pond system studied. No apparent difference was found in the mean number of larvae at the three stations during the monitoring period. Exploratory investigations were also conducted to determine the feasibility of culturing the soft shell clam, Mya arenaria in artificial sea water. Various techniques were investigated to induce maturation and spawning with little success. (Author)

Descriptors :   (*MARINE BIOLOGY, MOLLUSCA), (*MOLLUSCA, ECOLOGY), GROWTH(PHYSIOLOGY), SEA WATER, PLANKTON, HYDROGRAPHIC SURVEYING, SEDIMENTATION, SAND, MUD, DISTRIBUTION, OCEAN CURRENTS, SALINITY, LARVAE, PERIODIC VARIATIONS, REPRODUCTION(PHYSIOLOGY), ALGAE

Subject Categories : Anatomy and Physiology
      Biological Oceanography

Distribution Statement : APPROVED FOR PUBLIC RELEASE