endemic and introduced environment in E. Africa, p. 251-259. In L. Obeng (ed.)
Man-made lakes: the Accra symposium. Ghana Universities Press, Accra.
Gee, J.M. 1969. Trawling results within northern waters of Lake Victoria. Rep. East
Afr. Fish. Res. Org. 1968: 15-27.
George, T.T. 1975. Observations on the growth of Tilapia nilotica L. in tropical fresh-
water fish ponds treated with different fertilizers. Paper presented at the FAOICIFA
Symposium on Aquaculture in Africa, 30 September-2 October 1975. Accra, Ghana.
CIFAl751SE 11.16 p. FAO, Rome.
George, T.T. 1976. Introduction and transplantation of cultivable species into Africa.
FAOICIFA Tech. Pap. 4 (Suppl. 1): 407-432.
Gerking, S.D. 1959. The restricted movements of fish populations. Biol. Rev. 34: 221-242.
Ghosh, K.K. 1974. On the choice of growth curve for Indian major carps--on Bertalanffy
or Gompertz. Indian Soc. Agric. Stat. 26: 57-70.
Gleastine, B.W. 1974. A study of the cichlid Tilapia aurea (Steindachner) in a thermally
modified Texas reservoir. Texas A & M University, Texas. 258 p. M.S. thesis.
Glucksman, J., G. West and T.M. Berra. 1976. The introduced fishes of Papua New Guinea
with special reference to Tilapia mossambica. Biol. Conserv. 9(1): 37-44.
Godinez, G. and F. Jose. 1976a. Cultivo de Tilapia aurea en jaulas experimentales de un
m2 en lagos de El Salvador. Serv. Recursos Pesq., DGRNR, MAG El Salvador.
Godinez, G. and F. Jose. 197613. Cultivo de Tilapia aurea en jaulas comerciales de 32 m2
en el Lago Ilopango. Serv. Recursos Pesq. DGRNR, MAG El Salvador.
Goldstein, R.J. 1971. Diseases of aquarium fishes. T.F.H. Publ., Neptune City, New Jersey.
Gophen, M. 1980. Food sources, feeding behaviour and growth rates of Sarotherodon
galilaeum ( Linnaeus) fingerlings. Aquaculture 20(2) : 101-115.
Gordon, M. 1946. Interchanging genetic mechanisms for sex determination in fishes
under domestication. J. Hered. 37: 307-320.
Gordon, M. 1947. Genetics of Platypoecilus maculatus. IV. The sex determining mechanism
in two wild populations of the Mexican platyfish. Genetics 32: 8-17.
Gosse, J.P. 1963. Le milieu aquatique et 1'6cologie des poissons dansla dgion de Yangambi.
Ann. Mus. R. Afr. Cent. (St. 8 Sci. Zool.) 116: 113-249, + 1-10.
Gould, S.J. 1977. Ontogeny and phylogeny. Harvard University Press, Cambridge, Mass.
Gould, S.J. 1979. On the importance of heterochrony for evolutionary biology. Syst.
Zool. 28: 224-226.
Green, J., S.A. Corbet and E. Betney. 1973. Ecological studies on crater lakes in West
Cameroon. The blood of endemic cichlids in Barombi Mbo in relation to stratifica-
tion and their feeding habits. J. Zool. 170: 299-308.
Green, J., S.A. Corbet, E. Watts and O.B. Lan. 1978. Ecological studies on Indonesian
lakes. The montane lakes of Bali. J. Zool. 186: 15-38.
Green, R.F. 1980. A note on K-selection. Amer. Nat. 116: 291-296.
Greenfield, J.E., E.R. Lira and J.W. Jensen. 1977. Economic evaluation of Tilapia hybrid
culture in northeast Brazil. FA0 Fish. Rep. 159 (vol. 1): 328-340. (In Spanish with
English abstract)
Greenwood, P.H. 1965. On the cichlid fishes of Lake Nabugabo, Uganda. Bull. Br. Mus.
(Nat. Hist.) Zool. 12: 315-357.
Greenwood, P.H. 1966. The fishes of Uganda. The Uganda Society, Kampala.
Greenwood! P.H. 1974. The cichlid fishes of Lake Victoria, East Africa: the biology and
evolution of a species flock. Bull. Br. Mus. (Nat. Hist.) Zool. Suppl. 6: 1-34.
Greenwood, P.H. 1976. Fish fauna of the Nile, p. 127-141. In J. Rzoska (ed.) The Nile,
biology of an ancient river. Monographiae Biologicae 29. Dr. W. Junk bv Publ., The
Hague.
Guerrero, R.D. 1974. The use of synthetic androgens for the production of monosex
male Tilapia aurea (Steindachner). Auburn University, Auburn, Alabama. 112 p.
Ph.D. dissertation.
Guerrero, R.D. 1975. Cage culture of male and female Tilapia mossambica with and
without supplementary feeding in a fertilized pond. CLSU (Cent. Luzon State Univ.,
Philipp.) Sci. J. 9(2): 18-20.
Guerrero, R.D. 1977. Production of tilapia fry in floating net enclosures. FA0 Aqua-
culture Bull. 8(3-4): 4.
sean pound
(Sean Pound)
#1