Results 131 to 140 of about 1,018 (167)

Osmoregulation in juvenile Siberian sturgeon (Acipenser baerii)

Fish Physiology and Biochemistry, 2002
The osmoregulation capabilities of juvenile Siberian sturgeon exposed to three experimental osmolalities (22, 250 and 387 mOsmol kg−1) were studied over a 45-day period. Growth performance, haematological parameters, ion concentrations, gill and spiral valve Na+-K+-ATPase activities, as well as gill and spiral valve histology, were measured. At the end
A. Rodríguez, M.A. Gallardo, E. Gisbert, S. Santilari, A. Ibarz, J. Sánchez, F. Castelló-Orvay   +6 more
openaire   +1 more source

Variability of the immunoglobulin light chain in the Siberian sturgeon, Acipenser baeri

Developmental & Comparative Immunology, 1999
All sturgeon VL segments isolated in this study belong to a single family, VLI, which can be divided into two subfamilies. Of the 79 cDNA clones isolated, 76 belong to the larger subfamily, VLIa, and only 3 clones constitute the smaller subfamily, VLIb.
M L, Lundqvist, L, Pilström
openaire   +2 more sources

The estrogenic activity of certain phytoestrogens in the siberian sturgeon Acipenser baeri

The Journal of Steroid Biochemistry and Molecular Biology, 1991
Various phytoestrogens such as formononetin, daidzein, genistein and equol were synthesized. Their purity was assessed by various analytical techniques including melting point determination, thin-layer chromatography (TLC), infra-red spectra (i.r.
C, Pelissero, B, Bennetau, P, Babin, F, Le Menn, J, Dunogues   +4 more
openaire   +2 more sources

Ig light chain gene in the Siberian sturgeon (Acipenser baeri)

The Journal of Immunology, 1996
Abstract Elasmobranch and teleost fish have their Ig light (L) chain loci organized in multiple clusters (VL-JL-CL). The VL segments of teleosts are in opposite transcriptional orientation to the CL genes, suggesting that in teleosts and elasmobranchs there may have been separate evolutionary events leading to this organization.
M, Lundqvist, E, Bengtén, S, Strömberg, L, Pilström   +3 more
openaire   +2 more sources

New extender for cryopreservation of Siberian sturgeon (Acipenser baerii) semen

Cryobiology, 2015
The goal of this study was to develop a simple glucose-methanol extender for cryopreservation of Siberian sturgeon (Acipenser baerii) semen. Semen quality was assessed by determining post-thaw sperm motility and fertilizing ability at hatching stage. We tested the effect of glucose concentration (0, 0.10, 0.15, 0.20 and 0.30 M) in a methanol extender ...
S, Judycka, M, Szczepkowski, A, Ciereszko, G J, Dietrich   +3 more
openaire   +2 more sources

Behaviour of Early Life Stages in the Siberian Sturgeon

2017
In this chapter, field data and laboratory studies on the behaviour and development of Siberian sturgeon at early-life intervals have been reviewed and the available information assessed under two different points of view, the biological/ecological approach and the aquaculture one.
Enric Gisbert, Mikhail Solovyev
openaire   +1 more source

Motility analysis and energetics of the Siberian sturgeon Acipenser baerii spermatozoa

Journal of Applied Ichthyology, 1999
90% des spermatozoïdes sont activés en quelques secondes après dilution puis réduiront régulièrement leur activité juqu'à 5-10% au bout de 2mn. Durant la même période, le battement des spermatozoïdes baissera de 50Hz à 25-40Hz après 40sec. Le mouvement des flagelles, d'abord distribué uniformémént sur toute la longueur, disparaîtra de l'extrémité chez ...
Billard, Roland, Cosson, J., Fierville, F., Brun, Rémy, Rouault, T., Williot, Patrick   +5 more
openaire   +2 more sources

Immunology in Sturgeons with a Focus on the Siberian Sturgeon Mechanisms, Responses to Stress and Stimulation

2017
This chapter aims to explore the state of knowledge about the immune mechanisms in sturgeon with a focus on the Siberian sturgeon (Acipenser baerii), stress factors that can disrupt the immune system and the sources of stimulation. Studies conducted carried out for several decades on sturgeon suggest specificities of their immune system compared to ...
openaire   +1 more source

Unusual conditions for Siberian sturgeon (Acipenser baerii Brandt) spawning

Journal of Applied Ichthyology, 2006
Spawning of Siberian sturgeon A. baerii was induced hormonally using mammalian gonadotropin-releasing hormone analogue GnRHa ([D-Ala(6), Des Gly(10)]-LHRH Ethylamide) in Uruguay (35 degrees S) and results were compared with treatments made in France (45 degrees N). Testosterone, estradiol-17 beta and 17, 20 beta-dihydroxy-4-pregnen-3-one (17, 20 beta P)
Vizziano, Denise, Barrios, Florencia, Astigarraga, Irène, Breton, Bernard, Williot, Patrick   +4 more
openaire   +3 more sources

Characterization of beta2-microglobulin in a primitive fish, the Siberian sturgeon ( Acipenser baeri )

Immunogenetics, 1999
Characterization of beta2-microglobulin in a primitive fish, the Siberian sturgeon (Acipenser baeri)
Lundqvist, M.L., Appelkvist, P., Hermsen, T., Pilstrom, P., Stet, R.J.M.   +4 more
openaire   +3 more sources