2058 



Yonge, C. M., and T. E. Thompson. 1976. 



Living marine molluscs. William Collins Sons & Co., London, 273 p. 



Chapters 15 to 17 contain occasional reference to Meraenaria meraenaria, 

 details of which are contained in other papers in this bibliography. - J.L.M. 



2059 



Yonge, Maurice, and T. E. Thompson. 1978. 



Evolutionary systematics of bivalve molluscs. Philosoph. Trans. Roy. Soc. 

 London, B. 284: 199-436, ill. + plates. 



We did not find any special mention of Meraenaria mercenaries in any paper. 

 Many of the discussions touch upon the evolutionary systematics of 

 Meraenaria, however. - M.W.S. and J.L.M. 



2060 



Yoshino, Timothy, and Thomas C. Cheng. 1976. 



Fine structural localization of acid phosphatase in granulocytes of the 

 pelecypod Meraenaria meraenaria. Trans. Am. Microsc. Soc. 95(2): 215-220. 



Acid phosphatase (EC 3.1.3.2, orthophosphoric monoester phosphohydrolase) 

 activity within electron-opaque, membrane-bound vesicles of M. meraenaria 

 granulocytes has been localized. These vesicles now can be considered 

 lysosomes. They presumably function, at least in part, as storage 

 organelles for acid hydrolases, and are therefore analogous to granules in 

 mammalian polymorphonuclear and monocytic leucocytes. Lysosomes containing 

 acid phosphatase are probably the sources of this enzyme, found in cellular 

 and serum fractions of the hemolymph of M. meraenaria, although the 

 mechanism for enzyme release remains uncertain. - modified authors' abstract 

 - J.L.M. 



2061 



Young, David K., Martin A. Buzas, and Martha W. Young. 1976. 



Species densities of macrobenthos associated with seagrass: A field experi- 

 mental study of predation. J. Mar. Res. 34(4): 577-592. 



Meraenaria (Venus) meraenaria is not mentioned. - J.L.M. 



2062 



Young, Stephen D., and Miles A. Crenshaw. 1971. 



Synthesis of extrapallial proteins in the clam, Meraenaria meraenaria. Am. 

 Zool. 11(4): 655 (abstract). 



In whole clam 12% of the ^H-glycine incorporated into protein appeared in 

 extrapallial and other excreted proteins. In isolated mantle only 4% appeared 

 in excreted protein. This demonstrates that a greater proportion of proteins 

 formed by the whole clam are extrapallial and other excreted proteins, than in 

 protein formed by the mantle. Mantle is the main tissue lining the 

 extrapallial space, and it has been assumed that mantle was responsible for 

 extrapallial proteins, and that by this means the mantle may control 

 mineralization of the shell. It is suggested that most extrapallial proteins, 

 perhaps including those involved in mineralization, are synthesized in tissues 

 other than mantle. - J.L.M. 



571 



