Results 261 to 270 of about 27,957 (312)

Effects of 11-Ketotestosterone on Development of the Previtellogenic Ovary in the Sterlet, Acipenser ruthenus

open access: yesFrontiers in Endocrinology, 2020
11-ketotestosterone (11-KT) is a non-aromatizable and the most potent androgen in a few teleost. It has been reported that 11-KT in serum had a high concentration and increased sharply before the period of yolk deposition in females of few fishes.
Wei Wang   +6 more
exaly   +2 more sources

A Comment on the Siberian, Acipenser baerii, and Russian, Acipenser gueldenstaedtii, Sturgeons [PDF]

open access: possibleEnvironmental Biology of Fishes, 2004
Contrary to the opinion of Kynard et al. (2002), the Siberian sturgeon, Acipenser baerii, does not belong to the Ponto-Caspian species. It inhabits Siberian rivers and Lake Baikal. Acipenser baerii is a typical potamodromous species and the comparison of the behavior of its embryos and larvae with those of the anadromous Russian sturgeon, Acipenser ...
Georgii Ruban, Vadim J. Birstein
openaire   +1 more source

Atlantic sturgeons (Acipenser sturio, Acipenser oxyrinchus): American females successful in Europe [PDF]

open access: possibleNaturwissenschaften, 2006
Recent molecular data on the maternally inherited mitochondrial (mt) DNA have challenged the traditional view that the now extinct Baltic sturgeon population belonged to the European sturgeon Acipenser sturio. Instead, there is evidence that American sea sturgeon Acipenser oxyrinchus historically immigrated into the Baltic Sea.
Tiedemann, R.   +7 more
openaire   +3 more sources

Acipenser sturioandAcipenser nudiventrisin the Danube - extant or extinct? [PDF]

open access: possibleJournal of Applied Ichthyology, 2009
Summary The presence of Atlantic sturgeon (Acipenser sturio) and ship sturgeon (Acipenser nudiventris) in the Danube has been known through only occasional, chance sightings; significant uncertainty remains as to whether these species are already extinct or still present in the Danube River basin.
Torbjörn Ebenhard   +3 more
openaire   +1 more source
Some of the next articles are maybe not open access.

Related searches:

The complete mitochondrial genome of the Acipenser schrenckii (Acipenseridae: Acipenser)

Mitochondrial DNA, 2013
The Acipenser schrenckii is an ancient freshwater Chondrostei species, which is mainly distributed in Amur River in China and Russian. The complete mitochondrial genome of A. schrenckii was obtained for the first time in this study. The circular genome (16,548 bp in length) consists of 37 typical animal mitochondrial genes (13 protein-coding genes, 22 ...
Baowei Zhang   +3 more
openaire   +3 more sources

Home - About - Disclaimer - Privacy