Results 281 to 290 of about 15,868 (316)
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Conformation of sturgeon pituitary somatotropin
International Journal of Peptide and Protein Research, 1987Pituitary somatotropin (growth hormone) from the sturgeon (Acipenser guldenstadti) has been studied by zero‐order and second‐order absorption spectroscopy, as well as by circular dichroism. Difference absorption spectra have also been generated during proteolytic digestion of the hormone. The molar extinction coefficient of the native protein was found
Harold Papkoff, Thomas A. Bewley
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American Journal of Veterinary Research, 2000
Abstract Objective—To determine management, fish, and environmental risk factors for increased mortality and an increased proportion of runts for white sturgeon exposed to white sturgeon iridovirus (WSIV) and white sturgeon herpesvirus-2 (WSHV-2). Animals—White sturgeon in 57 tanks at 1 farm and observations made for fish at another
Susan Yun +4 more
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Abstract Objective—To determine management, fish, and environmental risk factors for increased mortality and an increased proportion of runts for white sturgeon exposed to white sturgeon iridovirus (WSIV) and white sturgeon herpesvirus-2 (WSHV-2). Animals—White sturgeon in 57 tanks at 1 farm and observations made for fish at another
Susan Yun +4 more
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Reproductive Cycles in Sturgeons with a Special Focus on the Farmed Siberian Sturgeon
2017The chapter reports the published data on biological cycles and/or puberty in sturgeons for both wild and farmed brood stocks. There are three main lines to document these data, the analysis of large-scale sampling or landings, the analysis of sampling with previously tagged fish and the echography which has a remarkable efficacy.
Patrick Williot, Mikhail Chebanov
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A visual pigment of the sturgeon retina
Experientia, 1989The visual pigments of hybrid sturgeon (a cross between Acipenser ruthenus (male) and Huso huso (female) have been studied both by the methods of incomplete partial bleaching and HPLC analysis. On the basis of the results obtained the relationship between the structure of opsins and the spectral characteristics of visual pigments is discussed.
J. Kohbara, H. Niwa, Tatsuo Suzuki
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Hybrids of the Siberian Sturgeon
2017It is known that all sturgeon species when crossed (both interspecific and intergeneric crossings) allow to produce viable offspring, whereupon breeding of various hybrids of Siberian sturgeon is of practical importance for commercial or caviar sturgeon farming in various climatic and technological conditions.
Eugeny Rachek +4 more
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The mechanism of gastrulation in the white sturgeon
Journal of Experimental Zoology, 1993AbstractGastrulation in the white sturgeon, Acipenser transmontanus, involves many of the same processes as in the amphibian Xenopus laevis, but the timing and relative importance of these processes are altered so that they function appropriately in a different type of egg.
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Sturgeon Biodiversity and Conservation
1997Prelude to Sturgeon Biodiversity and Conservation E.K. Balon. Sturgeon Biodiversity and Conservation: An Introduction W.E. Bemis, et al. Part 1: Diversity and Evolution of Sturgeons and Paddlefishes. An Overview of Acipenseriformes W.E. Bemis, et al. Osteology and Phylogenetic Interrelationships of Sturgeons (Acipenseridae) E.K. Findeis.
Vadim J. Birstein +2 more
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Lymphoid organs in sturgeons (Acipenseridae)
Veterinary Immunology and Immunopathology, 1986Lymphoid (lymphomyeloid) tissues in sturgeons (hybrid sturgeon, Huso huso X Acipenser ruthenus, and white Pacific sturgeon, A. transmontanus) were investigated by dissection, histology and transmission electron microscopy. The main lymphomyeloid tissues are the thymus, the spleen, the anterior part of the kidney, the meningeal myeloid tissue, the ...
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Science, 2005
SCIENCE IN IRANRASHT, IRAN-- Here at the International Sturgeon Research Institute, scientists are refining techniques for rearing fingerlings that may give the threatened species a better shot at surviving in the open sea.
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SCIENCE IN IRANRASHT, IRAN-- Here at the International Sturgeon Research Institute, scientists are refining techniques for rearing fingerlings that may give the threatened species a better shot at surviving in the open sea.
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