1064 



Leidy, Joseph. 1855. 



Art. XI. - Contributions towards a knowledge of the marine invertebrate 

 fauna of the coasts of Rhode Island and New Jersey. J. Acad. Nat Sci 

 Phila. 3(2): 135-152, ill. 



Mollusks are not included. - J.L.M. 



1065 



Lennon, Robert E. 1967. 



Clearance and registration of chemical tools for fisheries. Prog. Fish-Cult. 

 29(4): 187-193. 



Various chemicals are used, or might be used, for treatment of fish diseases, 

 as anaesthetics, as dyes for marking, as toxicants for reclamation of lakes 

 and streams, and as insecticides and herbicides at hatcheries and in fish 

 habitats. The paper deals with fishes and freshwater, but the discussion is 

 generally applicable to shellfishes and marine habitats. The Food and Drug 

 Administration has drawn up research requirements which include studies of 

 toxicity, efficacy, and residues of a compound in fishes. Procedures under 

 Veterinary Investigational Drug Regulations, in fisheries, and in industry 

 are outlined. Progress to date in meeting FDA requirements has been small 

 and slow. A tentative program has been drafted for 15 chemicals over a 

 5-year period. - J.L.M. 



1066 



Le Pennec, M., and D. Prieur. 1977. 



Les antibiotiques dans les elevages de larves de bivalves marins. Aquaculture 

 12: 15-30. 



This review paper concludes that most existing antibiotics have been tested 

 alone or in combination, very frequently in arbitrary fashion and without 

 preliminary study to determine which was most suitable. The results have 

 been variable, at times contradictory and not repeatable. The papers dealing 

 with Mercenaria mercenaria are abstracted elsewhere in this bibliography. 



- J.L.M. 



1067 



Letourneau, Rene. 1978. 



The plight of the shellf isherman. Upstream, Save the Bay, Inc., Dept. 

 Envir. Mgmt. 2(1) : 4 . 



The President of the recently formed Rhode Island Shellf ishermans Associa- 

 tion says the problem is in the conditional area. In summer, students, 

 school teachers, and residents compete with professional shellf ishermen. 

 Student licenses should be limited to prevent areas from being fished out. 

 Shellf ishermen would like to negotiate lines and open more of the Barrington 

 Beach area to shellf ishing . Politics is the biggest problem. - J.L.M. 



1068 



Levinton, Jeffrey. 1973. 



Genetic variation in a gradient of environmental variability: Marine bivalvia 

 (Mollusca) . Science 180: 75-76. 



Six bivalve mollusk species were sampled for genetic variability at two 

 enzyme-synthesizing loci. Effective number of alleles and absolute number of 

 alleles decreased with depth of burial in sediment, intertidally, and with 

 depth of water subtidally. It is proposed that environmental variability 

 regulates genetic variability at these two loci. M. mercenaria was 

 intermediate among Mytilus edulis and Modiolus demissus with higher values, 

 and Maaoma balthica, Mya arenaria, and Nucula annulata with lower numbers of 

 alleles and lower effective numbers of alleles. - modified author's abstract 



- J.L.M. 



298 



