1011 



Kominz , D. R. , F. Saad, and K. Laki . 1957. 



Chemical characteristics of annelid, mollusc, and arthropod tropomyosins. 

 Conf. Chem. Muse. Contraction, Tokyo, Igaku Shoin Ltd.: 66-76. 



Venus mercenaria was among the mollusks studied. Tropomyosin B, corresponding 

 to vertebrate tropomyosin, was present in mollusks and arthropods. Tropomyosin 

 A was present in annelids, pelecypods, and gastropods. All tropomyosins 

 followed the same sedimentation-concentration curve. The sum of the arginine 

 and lysine residues was always about 14 0, and the lysine/arginine ratio was 

 characteristic of the type of tropomyosin; in Venus 78/67. Tropomyosin A 

 appeared to be a subunit in the labile pelecypod myosin molecule, reinforcing 

 evidence that a tropomyosin subunit is present in the stable vertebrate myosin 

 molecule. - from authors' summary - J.L.M. 



1012 



Kominz, D. R. , F. Saad, J. A. Gladner, and K. Laki. 1957. 



Mammalian tropomyosins. Arch. Biochem. Biophys . 70(1): 16-28. 



Mercenaria (Venus) mercenaria is not mentioned. - M.W.S. 



1013 



Koppenheffer, Tom L., and Kenneth R. H. Read. 1969. 



The adductor muscle myoglobins of the bivalve mollusc Mercenaria mercenaria 

 L. Comp. Biochem. Physiol. 31: 829-832. 



The adductor muscle myoglobin of Mercenaria mercenaria has an apparent 

 molecular weight of 17,400. It consists of 2 major components, Mb-1 and 

 Mb-2, which are separable by ion exchange chromatography and disc gel 

 electrophoresis. - J.L.M. 



1014 



Korringa, P. 1947. 



Relations between the moon and periodicity in the breeding of marine animals. 

 Ecol. Monogr. 17(3): 349-381. 



Meraenavia (Venus) mercenaria is not mentioned. - M.W.S. 



1015 



Korringa, P. 1968. 



The basic principles of shellfish farming on the continental coast of Europe. 

 In Proc. Symp. Mollusca, Pt. III. Mar. Biol. Assn. India, Mandapam Camp: 

 818-823. 



This paper deals with oysters and mussels. The principles reviewed would 

 apply generally to Mercenaria. - J.L.M. 



1016 



Korringa, P. 1976. 



Farming the cupped oysters of the genus Crassostrea. Elsevier Sci. Pub. Co., 

 Amsterdam-Oxford-New York, ix+224 p. 



Chapter 2, which deals primarily with oyster farming in Long Island Sound by 

 the Bloom Brothers Oyster Company, contains a brief description of the 

 Company's hard clam operations. All oyster companies in Long Island Sound 

 harvest some hard clams. It was estimated that Long Island Oyster Farms Inc. 

 earned 5% of its income from Mercenaria mercenaria, Bloom Oyster Co. 66%, 

 Radel Oyster Co. 25%, Frank Flower and Sons 50%, Shellfish Inc. 90%, and 

 Bluepoints Co. 99%. Hard clams cannot be harvested with a normal oyster 

 dredge, but require a special hydraulic clam dredge. The Bloom Co. clam 

 dredge has a narrow blade, 6-inch teeth, and uses jets of water to soften 



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