Hormonal induction of sex reversal is possible in 47 species (15 families) of gonochores (34
species, nine families) and hermaphrodites using one of the 31 (16 androgens, 15 …

In fish, pre-embryonic events such as insemination, second polar body extrusion and first
mitotic cleavage are manipulable and render 37 different types of ploidy induction possible …

In order for biodiversity to be conserved, it is important to know how and where diverse
populations of plants and animals exist, to understand the effects of human impacts on them …

Genetics and Fish Breeding provides a thorough review of this important subject,
highlighting species which are bred commercially, such as salmon, trout, carp and goldfish …

Sex differentiation of the bagrid catfish Pseudobagrus fulvidraco (Richardson) is described
from hatching to the 100th day post-hatch (water temperature 25° C). Primordial germ cells …

Tilapia is regarded as the second most cultured aquaculture species globally because of its
easy to adapt in tropical and sub-tropical areas of the world (Shelton, 2002). Tilapia have …

Hormonal sex reversal was induced in the ornamental cichlid C. nigrofasciatum by dietary
administration of estradiol‐β or 17α‐methyltestosterone. The treatments involving 200 mg …

Supermale (YY–♂) Oreochromis mossambicus was produced for the first time by judiciously
combining the endocrine sex reversal technique with selective breeding or gynogenetic …

Elimination of uncontrolled reproduction is desirable to channel the available energy for the
efficient and rapid growth of tilapias. This may be achieved by hormonal treatment and …

All-female triploids were produced by heat shocking 2.5-min-old eggs which had been
fertilized with sperm from a masculinized female (XX-♂). Induction of triploidy was confirmed …