1442. Shapovalov, L., W.A. Dill, and A.J. Cordone. 1959. A 



revised check list of the freshwater and anadromous 

 fishes of California. Calif. Fish Game 45(3) :159-180. 



1443. Shchupakov, I.G. 1956. Concerning the heredity of hyper- 



trophy of the sexual glands in the male hybrids of 

 ripus. Dokl. Akad. Nauk SSSR 108(5) : 948-951. 



1444. Shearer, K.D., and J.C. Mulley. 1978. The introduction 



and distribution of the carp Cyprinus carpio Linnaeus, 

 in Australia. Aust. J. Mar. Freshwater Res. 

 29(5):551-563. 



1445. Shehadah, Z.H. (editor). 1976. Report of the symposium on 



aguaculture in Africa, Accra, Ghana. CIFA Tech. Pap. 

 4, 36 p. 



1447. Shelton, W.L. 1972. Comparative reproductive biology of the 



gizzard shad, Dorosoma cepedianum (Lesueur) and the thread- 

 fin shad, D. petenense (Gunter) in Lake Texana, Oklahoma. 

 Ph.D. Thesis, Univ. Oklahoma, Norman, 232 p. 



1446. , and B. G. Grinstead. 1973. Hybridization 



between Dorosoma cepedianum and D. petenense in Lake 

 Texoma, Oklahoma. Proc. 26th Annu. Conf. SE Assoc. 

 Game Fish Comm. 1973:506-510. Also, Sport Fishing 

 Abstr. 19(2):1974, p. 183:17632. 



1448. Shioya, T., K. Nishimura, and K. Yoshida. 1973. Probable 



hybrids of the Oplegnathus juveniles found in Oshima 

 waters. Jpn. J. Ichthyol. 20(l):47-49. 



1449. Shirkova, A. P. 1977. A hybrid within the genus Coregonus 



in Lake Ladoga. Vopr. Ikhtiol. 103:285-290 Transl. 



1451. Siciliano, M.J. 1972. Evidence for a spontaneous ovarian 



cycle in fish of the genus Xiphophorus . Biol. Bull. 

 (Woods Hole) 142(3) :480-488. 



1452. . 1975. Isoenzyme genetics of the platyfish- 



swortdail hybrid melanoma system. Abstr. 9th Int. 

 Pigm. Cell Conf. Houston, p. 57-58. 



1458. , D.C. Morizot, and D.A. Wright. 1976. 



Factors responsible for platyfish-swordtail hybrid 

 melanoma - many or few? In V. Riley, S. Karger, 

 and A.G. Basel (editors), Melanomas: Gene^properties 

 and clinical behavior, Vol. 2, p. 47-58. Basel, 

 Switzerland. Also, Proc. 9th Int. Pigm. Cell Conf. 

 Switzerland. 



1453. , and A. Perlmutter. 1972. Maternal effect 



on development of melanoma in hybrid fish of the genus 

 Xiphophorus. J. Natl. Cancer Inst. 49:415-421. 



124 



