Results 41 to 50 of about 3,438,733 (270)

Gonadotropins in the Russian Sturgeon: Their Role in Steroid Secretion and the Effect of Hormonal Treatment on Their Secretion. [PDF]

open access: yes, 2016
In the reproduction process of male and female fish, pituitary derived gonadotropins (GTHs) play a key role. To be able to specifically investigate certain functions of Luteinizing (LH) and Follicle stimulating hormone (FSH) in Russian sturgeon ...
Aizen, Joseph   +8 more
core   +3 more sources

Effects of dietary carbohydrate on growth, feed utilization, hepatic glucose and lipid metabolism in endangered Yangtze sturgeon (Acipenser dabryanus)

open access: yesAquaculture Reports, 2022
The aim of this study was to determine the effects of dietary carbohydrate levels on growth performance, feed utilization and metabolism of juvenile Yangtze sturgeon (Acipenser dabryanus).
Huantao Qu   +6 more
doaj   +1 more source

Future large hydropower dams impact global freshwater megafauna [PDF]

open access: yes, 2019
Dam construction comes with severe social, economic and ecological impacts. From an ecological point of view, habitat types are altered and biodiversity is lost.
Berlekamp, Juergen   +5 more
core   +1 more source

Case Study: Influence of Three Gorges Reservoir Impoundment on Hydrological Regime of the Acipenser sinensis Spawning Ground, Yangtze River, China

open access: yesFrontiers in Ecology and Evolution, 2021
After the construction of the Three Gorges Dam (TGD) in China, the downstream has been affected by the reduction in sediment discharge and regulation of flow processes, which have resulted in severe scouring and changes hydrological regime. Consequently,
Yinjun Zhou   +8 more
doaj   +1 more source

Development of growth rate, body lipid, moisture, and energy models for white sturgeon (Acipenser transmontanus) fed at various feeding rates. [PDF]

open access: yes, 2017
The objectives were to develop and evaluate: 1) growth rate models, 2) body lipid, moisture, and energy models for white sturgeon fed at various feeding rates (FR; % body weight [BW] per day) and then evaluate responses at proportions of optimum feeding ...
Fadel, James G   +3 more
core   +1 more source

The complete mitochondrial genome of Dabry’s sturgeon (Acipenser dabryanus)

open access: yesMitochondrial DNA. Part B. Resources, 2017
The complete mitochondrial genome of Dabry’s sturgeon (Acipenser dabryanus) was first determined in this study. The mitochondrial DNA is circular molecule (16,437 bp in length) with a typical vertebrate mitochondrial gene arrangement, including 13 ...
Juanjuan Liu   +5 more
doaj   +1 more source

Molecular cytogenetic differentiation of paralogs of Hox paralogs in duplicated and re-diploidized genome of the North American paddlefish (Polyodon spathula). [PDF]

open access: yes, 2017
BackgroundAcipenseriformes is a basal lineage of ray-finned fishes and comprise 27 extant species of sturgeons and paddlefishes. They are characterized by several specific genomic features as broad ploidy variation, high chromosome numbers, presence of ...
Amemiya, Chris T   +7 more
core   +4 more sources

Age and heat stress as determinants of telomere length in a long-lived fish, the Siberian Sturgeon [PDF]

open access: yes, 2016
Telomeres shorten at each cell division due to the end-replication problem but also in response to oxidative stress. Consequently, telomeres shorten with age in many endotherms, and this shortening is accelerated under stressful environmental conditions.
Angelier, Frédéric   +3 more
core   +3 more sources

Complete mitochondrial genome of Rhodeus cyanorostris (Teleostei, Cyprinidae): characterization and phylogenetic analysis [PDF]

open access: yesZooKeys, 2022
Rhodeus cyanorostris Li, Liao & Arai, 2020 is a freshwater fish that is endemic to China and restricted to Chengdu City in Sichuan Province. This study is the first to sequence and characterize the complete mitochondrial genome of R. cyanorostris.
Wenjing Li, Ning Qiu, Hejun Du
doaj   +3 more sources

What Does the Rise of China Do for Industrialisation in Sub-Saharan Africa? [PDF]

open access: yes, 2008
China's rapid growth and deepening global presence in Africa creates a major challenge for the conventional wisdom of industrialisation as a core component of development strategy.
Kaplinsky, Raphael
core   +1 more source

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