waste result in the South Carolina produc- 

 tion of crab (1947). In addition to poultry 

 food, this highly nutritive potential food 

 should find a ready market as the basis of 

 other animal foods and in the manufacture 

 of products such as chemicals, fertilizers, 

 soaps, oils, and vitamin concentrates. 



Costello, Thomas J., Donald M. Allen, and Carl 

 H. Saloman. 



1963. Marking spiny lobsters, Panulirus argus, 

 and blue crabs, Callinectes sapidus, with 

 biological stains, p. 83-85. In Biological 

 Laboratory, Galveston, Tex., fishery research 

 for the year ending June 30, 1962. U.S. Fish 

 and Wildlife Service, Circular No. 161. 



The color of the stains is visible in the gill 

 filaments of juvenile blue crabs after 40 

 days. Because the stained gills do not fade 

 with cooking of the crabs, marked indivi- 

 duals can be recovered when the meat is 

 picked. 



Costlow, John D., Jr. 



1963a. Regeneration and metamorphosis in 

 larvae of the blue crab, Callinectes sapidus 

 Rathbun. Journal of Experimental Zoology, 

 vol. 152, No. 3, p. 219-228. 



A claw was completely regenerated when 



autotomy was induced before the 4th day 



after the final zoeal molt. This was 



considered indirect evidence for the 



presence of functional Y organs in the 



megalops stage. 



1963b. The effect of eyestalk extirpation on 



metamorphosis of megalops of the blue crab, 



Callinectes sapidus Rathbun. General and 



Comparative Endocrinology, vol. 3, No. 2, p. 



120-130. 



Endocrines other than the molt-inhibiting 

 hormone of the x organ of the eyestalks 

 and the molt-accelerating hormone of the 

 Y organ appear to be involved in meta- 

 morphosis of the megalops and in 

 post-larval molting. 

 1963c. Larval development. AIBS [American 

 Institute of Biological Sciences] Bulletin, vol. 

 13, No. 5, p. 63-65. 



Various aspects of larval development 

 based on the sequence of developing stages 

 in the Brachyura. Experiments show that 

 although eyestalk extirpation very early in 



megalops development accelerates post- 

 larval molting in the blue crab, removal of 

 both eyestalks after the first 24 hours of 

 megalops life does not alter the frequency 

 of molting. 

 1965. Variability in larval stages of the blue 

 crab, Callinectes sapidus. Biological Bulletin 

 (Woods Hole), vol. 128, No. 1, p. 58-66. 



Three general types of variability: molting 

 without perceptible morphological changes, 

 elimination of a larval stage, and molt 

 resulting in morphological characters 

 normally attributed to two zoeal stages. 

 Possible effects of salinity, light, diet, and 

 malfunction of endocrine mechanisms 

 discussed. 



1967. The effect of salinity and temperature 

 on survival and metamorphosis of megalops of 

 the blue crab Callinec tes sapidus. 

 Helgolaender w i s se n sc h af tl ich e 

 Meeresuntersuchungen, vol. 15, p. 84-97. 



Reared megalops were maintained in 23 

 combinations of salinity and temperature 

 to determine effect on survival and rate of 

 development. In lower salinities survival 

 decreased with temperature. At 15° C. the 

 increase in duration of the megalops with 

 an increase in salinity was pronounced. 



1968. Metamorphosis in crustaceans, p. 3-41. 

 In William Etkin and Lawrence I. Gilbert 

 [ed.] Metamorphosis, a problem in develop- 

 mental biology. Appleton-Century-Crofts, 

 New York. 



Osmoregulatory ability of larval stages of 

 the blue crab. The effect of salinity and 

 temperature on the time of metamorphosis 

 from the megalops to the first-crab stage. 

 Variability in the morphology and the 

 number of larval stages. Mechanisms that 

 control larval molting and rate of develop- 

 ment. Processes that control limb regenera- 

 tion in larvae. 



Costlow, John D., Jr., and C. G. Bookhout. 



1959. The larval development of Callinectes 

 sapidus Rathbun reared in the laboratory. 

 Biological Bulletin (Woods Hole), vol. 116, 

 No. 3, p. 373-396. 



Provides a detailed description of all larval 

 stages and discusses the effects of salinity 

 and temperature on larval development. 



1960. A method for developing brachyuran 



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