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Initiation of gynogenesis in Oreochromis niloticus following heterologous fertilization
Author(s) -
Peruzzi S.,
Scott A. G.,
Domaniewski J. C. J.,
Warner G. F.
Publication year - 1993
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/j.1095-8649.1993.tb00441.x
Subject(s) - biology , oreochromis , tilapia , cyprinus , human fertilization , sperm , carp , common carp , heterologous , fishery , andrology , fish <actinopterygii> , anatomy , botany , genetics , gene , medicine
Fertilization of tilapia ( Oreochromis niloticus ) eggs with heterologous sperm from carp ( Cyprinus carpio ), and from some other eyprinids resulted in higher levels of haploid gynogenetic development than in unfertilized eggs. Normal and irradiated carp sperm achieved similar rates of activation of tilapia eggs, but lower rates than those achieved by irradiated tilapia sperm. Diploidy in gynogenetic eggs fertilized with carp sperm was restored using pressure shocks and resulted in the development of healthy tilapia gynogens.