Sturgeons are the most primitive, endangered groups of vertebrates on the planet and often
referred to as 'living fossils'. Their natural populations are decreasing due to habitat …

Less is known about the reproductive endocrinology of sturgeons compared to modern
teleosts. However, tools to assess the reproductive endocrinology and effects of …

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 …

The induction of triploidy and gynogenesis by chromosome set manipulation has
traditionally been studied more intensively in freshwater than in marine fish. In the last years …

The authors examined the current status of sturgeon aquaculture in China, including its
geographic distribution, an account on farmed species, overall production trends, state of …

BACKGROUND In order to understand the evolutionary significance of single triploids
among the mostly diploid Poecilia formosa we have developed a simple, noninvasive …

The optimal conditions for the retention of the second polar body in sea bass eggs were
investigated by altering the timing, intensity and duration of application of pressure and cold …

Two female and five male prespawning green sturgeon Acipenser medirostris that were
caught and held in cages in the Klamath River, California, were induced to spawn by …

The sex ratios of triploids and gynogenetic diploids in the hybrid sturgeon, the bester (Huso
huso female× Acipenser ruthenus male), have been investigated to confirm the possibilities …

Possible ways of polyploid speciation in fish are analysed. According to this analysis, the
autopolyploid origin of bisexual species seems to be practically improbable, whereas their …