1785 



Taylor, John L., John R. Hall, and Carl H. Saloman. 1971. 



Mollusks and benthic environments in Hillsborough Bay, Florida. U.S. DeDt. 

 Commerce, Natl. Mar. Fish. Serv. , Fish. Bull. 68(2): 191-202. 



Stations were classified as healthy (8 of 45 stations) if live mollusks were 

 abundant and diverse, marginal (18 of 45) if at least 50% belonged to one or 

 more of 4 indicator specie^, and unhealthy (19 of 45) if no live mollusk was 

 taken. Mercenaria campechiensis was collected at only 4 stations. Mean 

 sediment grain size varied from 2.02 to 3.15 o with standard deviations of 

 0.7 to 1.8 O, sediment types were fine sand to very fine sand, bottom 

 vegetation was absent or Gracilaria sp. present (1 sta) , and bottom salinity 

 18.51 to 22.95. All but one of these stations were classified healthy. 

 Most of the Bay is seriously polluted. - J.L.M. 



1786 



Taylor, Richard F., Miyoshi Ikawa, John J. Sasner, Jr., Frederick P. Thurberg, 

 and Kenneth K. Andersen. 197 4. 



Occurrence of choline esters in the marine dinof lagellate Amphidinium carteri . 

 J. Phycol. 10(3): 279-283. 



Isolated hearts of Mercenaria mercenaria were used to assay occurrence of 

 choline-like substances isolated from the dinof lagellate. These plankton 

 organisms have been shown to be toxic to fishes and mice, and supernates 

 from cultures of A. carteri have caused fish kills in 15 to 25 min. Natural 

 and synthetic acrylylcholine had approximately 1/4,000 the activity of 

 acetylcholine, and choline O-sulphate about 1/20,000 the activity, on isolated 

 Mercenaria heart. - J.L.M. 



1787 



Teal, John M. 1962. 



Energy flow in the salt marsh ecosystem of Georgia. Ecology 43(4) : 614-624. 



Among estuarine species limited in marsh to low water level is included 

 Mercenaria mercenaria. Salinity varies from 20 to 30°/ oo with values as 

 low as 12°/ 00 in heads of creeks just after heavy rains. The limited number 

 of animals which have adapted to these extremes are relatively free from 

 competing species and enemies. - J.L.M. 



1788 



Teal, John M., and John W. Farrington. 1977. 



A comparison of hydrocarbons in animals and their benthic habitats. In 

 Petroleum hydrocarbons in the marine environment. Rapp. Proc.-Verb. Reunions, 

 Cons. Internatl. Expl. Mer 171 (Sect. 4): 79-83. 



Mercenaria mercenaria is not mentioned in the text, but fig. 64 shows gas 

 chromatographs of alkanes, cycloalkanes , alkenes, and cycloalkenes from 

 sediments and quahog from a chronically polluted area. Distribution of 

 these hydrocarbons is appreciably lower in retention time in clams than in 

 sediments, showing that clams discriminated for lighter compounds in 

 accumulating hydrocarbons from their surroundings. - J.L.M. 



493 



