1198 



MacPhail, J. S., E. I. Lord, and L. M. Dickie. 1956. 



The green crab — a new clam enemy. Prog. Repts . Atlantic Coast Stas. 63: 3-12. 



The green crab (Carcinides maenas ) has only recently appeared in Canadian 

 waters. It has spread into the Bay of Fundy and towards the outer coast of 

 Nova Scotia, and there is no sign that it has reached the limits of its spread. 

 The northward extension of the range undoubtedly was fostered by the increasing 

 temperatures along the coast. Experiments showed that soft clams, Macoma, and 

 mussels were the favorite food. Quahogs (Mercenaria mercenaria) were taken 

 occasionally. It was concluded that the green crab is one of the worst, if 

 not the worst, clam predators known. - J.L.M. 



1199 



McCall, Peter L. 1977. 



Community patterns and adaptive strategies of the infaunal benthos of Long 

 Island Sound. J. Mar. Res. 35(2): 221-266. 



Mercenaria mercenaria is not mentioned. - M.W.S. 



1200 



McCubbin, W. D., and C. M. Kay. 1968. 



The subunit structure of fibrous muscle proteins as determined by osmometry. 

 Biochim. Biophys. Acta 154(1): 239-241. 



Paramyosin was prepared from adductor muscles of Venus mercenaria. Molecular 

 weight of native V. mercenaria paramyosin was 212,000 by osmometry, in good 

 agreement with the value of 220,000 measured by light scattering and 

 Archibald ultracentrifugation. The solvent was 0.6 M KC1, 0.01 M potassium 

 phosphate buffer (pH 7.4). Most striking was the reduction in estimated 

 molecular weight (by a factor of 2) undergone by paramyosin in a denaturing 

 rather than a benign medium. The study confirmed the hypothesis that 

 paramyosin and light meromyosin fraction I are very similar to each other, 

 and to tropomyosin, architecturally in that their molecules each contain 

 2 polypeptide chains. - J.L.M. 



1201 



McDermott, John J. 1964. 



Food habits of the toadfish. Ops anus tau (L.), in New Jersey waters. Proc. 

 Pa. Acad. Sci. 38: 64-71. 



Mercenaria mercenaria and some other mollusks were found occasionally in 

 toadfish stomachs but their incidence and numbers were insignificant in 

 comparison with crustaceans. It was concluded that ingestion of mollusks 

 is only by chance, i.e. they are taken up incidentally in the quest for 

 other foods. - J.L.M. 



1202 



McDougall, K. D. 1943. 



Sessile marine invertebrates of Beaufort, North Carolina. Ecol. Monogr. 13: 

 321-374. 



No mention of Mercenaria (Venus) mercenaria. - W.J.B. 



1203 



McErlean, A. J., and Jack Howard. 1971. 



Photographic method for surveying clam populations. Proc. Natl. Shellf. 

 Assn. 61: 91-94. 



The method was used to survey Mya arenaria beds. It is possible that 

 Mercenaria mercenaria might also be evaluated by this method. - J.L.M. 



337 



