Development and importance of crabbing 

 to residents of Tangier Island in Chesa- 

 peake Bay. Methods used to capture the 

 blue crab, and description of the houses 

 which packed crab and also dealt in soft- 

 shell crabs. 



Hamer, Paul E. 



1955. Old blue claws, summary of the biology 

 of the blue crab, Callinectes sapidus Rathbun, 

 and the dredge fishery. New Jersey Outdoors, 

 July, 7 p. 



Popular account of life history and the 

 fishery. Reported that there is no indica- 

 tion that the winter dredge fishery in 

 Chesapeake Bay is detrimental to a crab 

 population. 



Hammen, Carl S., and Paul J. Osborne. 



1959. Carbon dioxide fixation in marine 

 invertebrates: A survey of major phyla. Sci- 

 ence, vol. 130, No. 3386, p. 1409-1410. 



The uptake of NaHCl^03 from sea water 



by the blue crab, one of 14 species studied. 



The blue crab fixed CO2 into acids of the 



Krebs critic acid cycle. 



Hanstrbm, Bertil. 



1935. Preliminary report on the probable 

 connection between the blood gland and the 

 chromatophore activator in decapod crusta- 

 ceans. Proceedings of the National Academy 

 of Sciences, U.S.A., vol. 21, No. 10, p. 

 584-585. 



Found a significant connection between 

 the position of the blood gland and the 

 x-organ, and the position of the source of 

 the pigment concentrating substance. The 

 distal-dorsal half of the blue crab eyestalk 

 contains the active substance and both the 

 incretory organs. 

 1939. Hormones in invertebrates. Clarendon 

 Press, Oxford, 198 p. 



References to the blue crab include the 

 structure of the sinus gland as related to 

 color change, the pigment-activating hor- 

 mone in the eyestalks, and the effect of 

 eyestalk extracts on the migration of the 

 eye-pigments of Palaemonetes. 



Hard, W. L. 



1942. Ovarian growth and ovulation in the 

 mature blue crab, Callinectes sapidus Rath- 



bun. Chesapeake Biological Laboratory, 

 Solomons, Md., Publication No. 46, 17 p. 

 A histological study of the ovary, at various 

 periods during the life of the mature crab, 

 revealed that two ovulations occur. A 

 method was developed in which the gross 

 appearance of the ovary is used for 

 determination of the stage (five distin- 

 guished) in the reproductive cycle of the 

 crab. 



Harrington, Robert W., Jr., and William L. 

 Bidlingmayer. 



1958. Effects of dieldrin on fishes and 

 invertebrates of a salt marsh. Journal of 

 Wildlife Management, vol. 22, No. 1, p. 76-82. 

 After a Florida salt marsh was treated with 

 dieldrin to eliminate sandfly larvae, obser- 

 vations were made in a 5,600- foot ditch to 

 determine the effect on fish and inverte- 

 brates. Fish and all aquatic crabs were 

 killed; only a single living blue crab was 

 observed during a 17-week observation 

 period. 



Harris, Marvin M. 



1932. A bacteriological study of decomposing 

 crabs and crabmeat. American Journal of 

 Hygiene, vol. 15, p. 260-275. 



Comprehensive studies using blue-crab- 

 meat indicated the manner in which crabs 

 and crab meat decompose and the role of 

 bacteria (10 genera were isolated) in bring- 

 ing about such changes. The Nessler 

 ammonia test is proposed to differentiate 

 fresh from spoiled meat, before macro- 

 scopic signs of spoilage appear. 



Hartnoll, R. G. 



1969. Mating in the Brachyura. Crustaceana, 



vol. 16, No. 2, p. 161-181. 



Division of the six superfamilies of the 

 Brachyura into two groups on the basis of 

 the structure of the female reproductive 

 organs. Courtship, copulatory act, and rela- 

 tion of structure to function. Includes 

 mating of the blue crab. 



Hartog, C. D., and L. B. Holthuis. 



1951. De Noord-Amerikaanse "Blue Crab" in 

 Nederland. Levende Natuur, vol. 54, No. 7, p. 

 121-125. 



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