755 



Hamrick, Tom. 1974. 



Clamming prospects bright. Natl. Fisherman 55(7): 11A, 31A. 



Although only about 7,000 bu of clams are being dug along the South Carolina 

 coast presently for commercial sale, extensive exploration with two seagoing 

 hydraulic clam dredges is showing considerable promise in some waters. Out 

 of town buyers are reportedly interested in setting up purchasing stations. 

 The lower Santee River appears to contain a commercial clam colony. State 

 marine officials are determining the potential for production of Mereenaria 

 mereenaria which can be sustained without damage to the resource, including 

 how many boats can operate profitably. - J.L.M. 

 756 



Hamrick, Tom. 1978. 



S.C. clam dredging boosts appreciation of little-used food. Natl. Fisherman 

 59(1): 30. 



Hydraulic clam harvesting which produced 28,000 bags of Mereenaria mereenaria 

 last year worth $120,000 has an even brighter future. This year is the fifth 

 season in the Santee River estuary. Only 7 escalators will be permitted to 

 operate again this year. - J.L.M. 



757 



Hamrick, Tom. 1978. 



S.C. shellfish landings show production doubling. Natl. Fisherman 59(2) : 11. 



Mereenaria mereenaria , a seafood you could not even give away a couple of 

 years ago in S.C, now has a thirsty local market. They are becoming 

 increasingly popular in the south. - J.L.M. 



758 



Hamrick, Tom. 1979. 



Scientists heartened by clam mariculture advances in S.C. test. Natl. 

 Fisherman 59(9): 51. 



Artificially planted seed clams (Mereenaria mereenaria) will grow to 

 marketing size in 19 months, even when planted at 300 clams/yd2 . Survival 

 rate was 45%, and once clams attained a length of one inch survival shot 

 up to 99%. Since crabs are most active in warm weather, seed clams planted 

 in fall would be large enough in spring to avoid consumption by mud crabs. 

 Survival of 50% will make mariculture economically feasible. - J.L.M. 



759 



Hamwi, Adel. 1968. 



Pumping rate of Mereenaria mereenaria as a function of salinity and 

 temperature. Proc. Natl. Shellf. Assn. (1967) 58: 4 (abstract). 



Pumping rates of hard clams were measured at temperatures 6-32 °C and 

 salinities 15-40°/oo using colored seawater. At a salinity of 25±2°/°°: 

 no pumping occurred below 6°C and above 32 °C; pumping increased as 

 temperatures were raised from 7-12°C; no change in pumping occurred from 

 12-18°C; maximum pumping occurred at 24-26°C; pumping decreased at 

 temperatures above 26°C. At temperatures 25±1°C: no pumping occurred at 

 salinities below 15°/°° and above 40°/°°; maximum pumping occurred at 

 salinities between 23 and 27°/°°. - D.L. 



760 



Hamwi, Adel. 1969. 



The respiratory physiology of Mereenaria mereenaria. Proc. Natl. Shellf. 

 Assn. 59: 3 (abstract). 



Pumping and respiratory rates of hard clam were measured under a variety of 

 combinations of temperature, salinity, and oxygen tension. There was a 



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