1965. Commercial fishery investigations, p. 

 65-77. In Effects of pesticides on fish and 

 wildlife, 1964 research findings of the Fish 

 and Wildlife Service. U.S. Fish and Wildlife 

 Service, Circular No. 226. 



Blue crabs survived a 5-month experimental 

 exposure to DDT. Preliminary tests showed 

 that a concentration of 1.0 p.p.b. kills 

 crabs in 8 days; crabs survived 0.25 p.p.b. 

 1969. The significance of DDT residues in 

 estuarine fauna, p. 205-220. In Morton W. 

 Miller and George G. Berg [ed.] Chemical 

 fallout: Current research on persistent pesti- 

 cides. Charles C. Thomas, Springfield, 111. 

 Feeding a DDT contaminated diet to blue 

 crab, shrimp, pinfish, and croaker caused 

 deaths among each group of experimental 

 animals. 



Butler, Philip A., and Paul F. Springer. 



1963. Pesticides— a new factor in coastal 

 environments. Transactions of the 28th North 

 American Wildlife and Natural Resources 

 Conference, 1963, p. 378-390. 



In laboratory tests, juvenile blue crabs were 

 about 100 times more resistant than shrimp 

 to chlorinated hydrocarbon insecticides. In 

 field studies, blue crab populations were 

 reduced 10 to 40 percent when exposed to 

 one treatment of DDT, and 95 to 97 

 percent when multiple treatments were 

 repeated for several years. 



Byrd, G. Clifford. 



1956. The industry program on crabmeat 

 plant sanitation. Journal of Milk and Food 

 Technology, vol. 19, p. 73-75. 



Discusses the regulations and objectives of 

 various regional codes for the sanitary 

 control of handling, packing, and distri- 

 buting of crab meat, and the need for a 

 national plan for quality standards. 



Cable, R. M., and A. V. Hunninen. 



1940. Studies on the life history of Spelo- 

 trema nicolli (Trematoda: Micro phallidae) 

 with the description of a new microphallid 

 cecaria. Biological Bulletin (Woods Hole), vol. 

 78, No. l,p. 136-157. 



The cercaria develops in sporocysts in the 

 digestive gland of Bittium alternatum. C. 

 sapidus serves as the second intermediate 



host. The cercariae penetrate the gills and 

 are passed by means of the blood stream to 

 the tissues. 



Carey, Francis G. 



1965. Chitin synthesis in vitro by crustacean 

 enzymes. Comparative Biochemistry and 

 Physiology, vol. 16, No. 1, p. 155-158. 



A chitin synthetase in subcellular particles 

 from crustacean tissues (from the epidermis 

 of molting C. sapidus or from Artemia) 

 incorporates C^4 from uridine diphosphate 

 acetyl-Cl4 glucosamine into chitin. C^4 

 acetylglucosamine is released from the prod- 

 uct on digestion with chitinase. 



Cargo, David G. 



1954a. Blue crabs tagged in Chincoteague 

 Bay. Maryland Tidewater News, vol. 11, No. 

 3, p. 1-4. 



Returns from a tagging program indicated 

 the general pattern of movements of 

 Chincoteague Bay blue crabs. 

 1954b. Maryland commercial fishing gear. III. 

 The crab gears. Chesapeake Biological Labora- 

 tory, Solomons, Md., Educational Series No. 

 36, 18 p. 



Description of trotline, pot, scrape, dip nets, 



and lesser gears, and how fished. The crab 



industry, regulations on the fishery, and 



catch by gear (1948-52) are reviewed. 



1955a. The blue crab in Maryland estuarine 



waters. Maryland Tidewater News, vol. 12, 



No. 2, p. 1-2. 



Popular account of life history, migrations, 

 industry, fishery and regulations. 

 1955b. Whereabouts of Maryland crabs in 

 spring revealed. Maryland Tidewater News, 

 vol. 11, No. 12, p. 1-2, 4. 



The seasonal movements and locations of 

 juvenile, egg-bearing, adult male, and soft- 

 shell blue crabs in Chesapeake Bay. 

 1956a. Tiny blue crab found in Patuxent 

 during December. Maryland Tidewater News, 

 vol. 12, No. 11, p. 4. 



Report of capture of a 1/4-inch wide crab, 

 a size rarely collected in the Patuxent 

 River, Md., during winter. The distribution 

 of small crabs in Chesapeake Bay is dis- 

 cussed. 

 1956b. Sizes of crabs compared. Maryland 

 Tidewater News, vol. 13, No. 3, p. 1, 4. 



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