FISHERY BULLETIN: VOL. 84, NO. 4 



mysid, Gnathophausis ingens, to the physical and 

 biotic stability of this species' environment. Various 

 environmental factors can alter both the dimensions 

 and the number of molts in many species of crus- 

 taceans. At depths of maximum abundance (500-775 

 m) of C. tanneri, the annual water ranges from 2.3° 

 to 5.6°C and certainly this uniform environment 

 contributes to the consistency of instar size and size 

 at maturity. 



ACKNOWLEDGMENTS 



We appreciate the assistance of Brian Oliver. 

 Howard Horton and David Colby reviewed this 

 manuscript and their time and efforts have greatly 

 contributed to it. Robert S. Carney was responsible 

 for the loan of Chionoecetes tanneri from the Smith- 

 sonian Institution. This research was funded by 

 NOAA (maintained by the U.S. Department of Com- 

 merce) Sea Grant Institution Grant Nos. NOAA 

 04-3-158-1 and NOAA 04-5-158-2. Data analysis was 

 facilitated by a grant from the Oregon State Uni- 

 versity Computer Center. 



LITERATURE CITED 



Baross, J. A., P. A. Tester, and R. Y. Morita. 



1978. Incidence, microscopy, and etiology of exoskeleton 

 lesions in the tanner crab, Chionoecetes tanneri. J. Fish. 

 Res. Board Can. 35:1141-1149. 

 Brown, R. B., and G. C. Powell. 



1972. Size at maturity in the male Alaskan tanner crab, Chio- 

 noecetes bairdi, as determined by chela allometry, reproduc- 

 tive tract weights, and size of precopulatory males. J. Fish. 

 Res. Board Can. 29:423-427. 

 Carey, A. G., and H. Heyamoto. 



1972. Techniques and equipment for sampling benthic organ- 

 isms. In A. T. Pruter and D. L. Alverson (editors), Colum- 

 bia River estuary and adjacent ocean waters: Bioenviron- 

 mental studies, p. 378-412. Univ. Wash. Press, Seattle. 

 Childress, J. J., and M. H. Price. 



1978. Growth rate of the bathypelagic crustacean Gnatho- 

 phausia ingens (Mysidacea: Lophogastridae). I. Dimen- 

 sional growth and population structure. Mar. Biol. (Berl.) 

 50:47-62. 

 Donaldson, W. E., R. T. Cooney, and J. R. Hilsinger. 



1981. Growth, age and size at maturity of tanner crab, Chio- 

 noecetes bairdi M. J. Rathbun, in the northern Gulf of Alaska 

 (Decapoda, Brachyura). Crustaceana 40:286-302. 



Gould, S. J. 



1966. Allometry and size in ontogeny and phylogeny. Biol. 

 Rev. 41:587-640. 

 Hartnoll, R. G. 



1969. Mating in the Brachyura. Crustaceana 16:161-181. 

 Hilsinger, J. R., W. E. Donaldson, and R. T. Cooney. 



1975. The Alaskan snow crab, Chionoecetes bairdi, size and 

 growth. Univ. Alaska Sea Grant Rep. No. 75-12, Inst. Mar. 

 Sci., 75-6 p. 



Lough, R. G. 



1974. Dynamics of crab larvae (Anomura, Brachyura) off the 

 central Oregon coast, 1969-1971. Ph.D. Thesis, Oregon 

 State Univ., Corvallis, 299 p. 

 Lux, F. E., A. R. Ganz, and W. F. Rathjen. 



1982. Marking studies on the red crab (Geryon quinquedens) 

 Smith off southern New England. J. Shellfish. Res. 2:71- 

 80. 

 Miller, R. J., and J. Watson. 



1976. Growth per molt and limb regeneration in the spider 

 crab, Chionoecetes opilio. J. Fish. Res. Board Can. 33: 

 1644-1649. 



Pereyra, W. T. 



1966. The bathymetric and seasonal distribution, and repro- 

 duction of adult tanner crabs, Chionoecetes tanneri Rathbun 

 (Brachyura: Majidae), off the northern Oregon coast. Deep- 

 Sea Res. 13:1185-1205. 



1968. Distribution of juvenile tanner crabs (Chionoecetes tan- 

 neri) Rathbun, life history model, and fisheries management. 

 Proc. Natl. Shellfish. Assoc. 58:66-70. 



1972. Bathymetric and seasonal abundance and general 

 ecology of the tanner crab, Chionoecetes tanneri Rathbun 

 (Brachyura: Majidae) off the northern Oregon coast. In 

 A. T. Pruter and D. L. Alverson (editors), Columbia River 

 estuary and adjacent ocean waters: Bioenvironmental 

 studies, p. 538-582. Univ. Wash. Press, Seattle. 

 Rathbun, M. J. 



1925. The spider crabs of America. Bull. U.S. Natl. Mus. 

 129, 613 p. 



SlNDERMANN, C. J. 



1970. Principal diseases of marine fish and shellfish. Acad. 

 Press, N.Y., 369 p. 



SOMERTON, D. A. 



1981 . Regional variation in the size of maturity of two species 

 of tanner crab (Chionoecetes bairdi and C. opilio) in the 

 eastern Bering Sea, and its use in defining management 

 subareas. Can. J. Fish. Aquat. Sci. 38:163-174. 

 Tessier, G. 



1960. Relative growth. In T. Waterman (editor), The phys- 

 iology of Crustacea, Vol. 1, p. 537-560. Acad. Press, N.Y. 

 U.S. National Marine Fisheries Service. 



1985. Fisheries of the United States, 1984. U.S. Natl. Mar. 

 Fish. Serv., Curr. Fish. Stat. 8360, 121 p. 

 Watson, J. 



1970. Maturity, mating, and egg laying in the spider crab, 

 Chionoecetes opilio. J. Fish. Res. Board Can. 27:1607-1616. 



980 



