1830 



Tubiash, Haskell S.,and Alva E. Farrin. 1967. 



Dichlorophene for control of tunicates in cultures of artificially reared 

 bivalve mollusks. Progr. Fish. Cult. 29(4): 235-237. 



Dichlorophene proved to be effective for control of the fouling ascidian 

 tunicate Molgula manhattensis in experimental hatchery cultures of juvenile 

 bivalve molluscs. Exposure to DCP at levels of 10 ppm for 4 to 6 hrs was 

 lethal to tunicates but not to juvenile or adult Mercenaria mercenaria. 

 Adult hard clams tolerated exposure to 10 ppm DCP for 6 hrs with no apparent 

 ill effects. - J.L.M. 



1831 



Tubiash, Haskell S., Paul E. Chanley, and Einar Leifson. 1965. 



Bacillary necrosis, a disease of larval and juvenile bivalve mollusks. I. 

 Etiology and epizootiology . J. Bacteriol. 90(4): 1036-1044. 



Four biotypes and 5 antigenic types of bacteria pathogenic to larvae of 

 Mercenaria mercenaria and 4 other bivalves were isolated. All are gram- 

 negative motile rods. Comparative studies of a fairly large number of 

 similar bacteria isolated from presumably normal marine fauna showed that 

 none of these was pathogenic for bivalve larvae nor did they have antigens 

 common with the pathogenic group. The 4 biotypes had a number of common 

 characteristics that rarely were present in other cultures from marine 

 fauna. The pathogens were of the type commonly classified as Aeromonas sp. 

 or Vibrio sp. Initial invasion probably is through larval alimentary tract. 

 Adult clams and other species exposed to massive concentrations of all 

 pathogenic serotypes showed no ill effects, although they ingested vast 

 numbers of test bacteria. Antibiotic preparations apparently are effective 

 in preventing and treating larvae infected in hatcheries. Some drugs were 

 tolerated by larvae at concentrations which may be helpful therapeutically. 

 - J.L.M. 



1832 



Tubiash, Haskell S., Rita R. Colwell, and Riichi Sakazaki. 1970. 



Marine vibrios associated with bacillary necrosis, a disease of larval and 

 juvenile bivalve mollusks. J. Bacteriol. 103(1): 271-272. 



A group of bacteria, identified by numerical taxonomic analysis as Vibrio spp. , 

 can be isolated from overtly healthy, diseased, or moribund bivalve mollusks or 

 their environments in productive commercial shellfish areas. Mercenaria 

 mercenavia, among other bivalves, is subject to infection in laboratory 

 cultures and in the natural environment. - J.L.M. 



1833 



Tubiash, Haskell S., Carl N. Shuster, Jr., and John A. Couch. 1968. 



Anomalous siphons in two species of bivalve mollusks. Nautilus 81(4): 123-125. 



Included was a specimen of M. mercenaria with a supernumerary structure on 

 ventral outer wall of incurrent siphon. This anemone-like projection had a 

 distal whorl of tentacles, similar to a normal siphon, but lacking a 

 functional opening. - J.L.M. 



1834 



Tufts, Norman R. 1967. 



Topical labeling of shellfish. Proc. Natl. Shellf. Assn. 57: 73-76. 



A durable mark for shellfish could be used for detecting bootlegged clams, 

 identification of growing areas and shellstock, and as a tool in research. 

 Successful marking was accomplished with epoxy glue, Spectraglo green 

 tracing powder coated with krylon, and krylon-sprayed acetone solutions of 

 melamine sulphonamid formaldehyde resins. Marked shells can be detected by 

 fluorescence under ultraviolet light. - J.L.M. 



509 



