Results 271 to 280 of about 15,868 (316)

The development of the sturgeon heart

Anatomy and Embryology, 2004
This paper presents a sequential analysis of the development of the sturgeon (Acipenser naccarii) heart from the end of gastrulation to the early juvenile stages. At late neurulation, the heart appears as a straight, short tube located over the endoderm that forms the wall of the yolk sac, in front of the developing head. The heart axis is aligned with
Valentín Sans-Coma, José M. Icardo, A. Guerrero, Alberto Domezain, Ana C. Durán, Elvira Colvee   +5 more
openaire   +3 more sources

The chromosomes of Italian sturgeons

Experientia, 1974
On presente l'etude caryologique des trois especes d'Esturgeons des eaux italiennes. L'especeHuso huso a un nombre diploide d'environ 116, dont 34 couples de chromosomes metacentriques et submetacentriques, 3 couples de chromosomes acrocentriques, et environ 38 microchromosomes.
F. Fontana, G. Colombo
openaire   +3 more sources

Duration and drift of larval lake sturgeon in the Sturgeon River, Michigan

Journal of Applied Ichthyology, 2002
Summary Recovery of lake sturgeon populations in the Great Lakes basin is now a focus of binational,federal,provincial,state and tribal management agencies; however,efforts to restore and rehabilitate stocks will be ineffective until early life history strategies are understood.
Nancy A. Auer, Edward A. Baker
openaire   +2 more sources

Chromosome banding in sturgeons

Journal of Applied Ichthyology, 1999
Summary The article reviews the present knowledge of chromosome banding in sturgeons and summarizes recent findings obtained by both classical banding techniques (C-banding, fluorescent and silver staining) and molecular methods, such as fluorescent in situ hybridization (FISH).
FONTANA, Francesco, ROSSI, Remigio, LANFREDI M, ARLATI G, BRONZI P.   +4 more
openaire   +3 more sources

Importance of habitat and migration to sturgeons with emphasis on lake sturgeon

Canadian Journal of Fisheries and Aquatic Sciences, 1996
Sturgeons utilize a variety of habitat types throughout their life: rivers for spawning; rivers, lakes, estuaries, or the sea for feeding and wintering adults; and estuarine areas for feeding young. Distances covered by some sturgeons during spawning migrations show a positive relationship to average adult size. The lake sturgeon, Acipenser fulvescens,
openaire   +2 more sources

Critical Swimming Speed and Behavior of Juvenile Shovelnose Sturgeon and Pallid Sturgeon

Transactions of the American Fisheries Society, 2003
Abstract The swimming performance of hatchery-reared, juvenile shovelnose sturgeon Scaphirhynchus platorynchus and pallid sturgeon S. albus was studied in a laboratory swim tunnel at 20°C and 10°C. The mean 30-min critical swimming speed was not significantly different between species at either temperature (36.9 cm/s for shovelnose sturgeon and 35.9 cm/
Adams, S R, Adams, G L, Parsons, G R
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Reply to Sturgeon

Ethics, 1985
Can I interchange the phrases 'it is rational to' and 'it makes sense to,' as I have been doing? It is primarily talk of what it "makes sense" to do, to feel, and to believe that concerns me here. Indeed for my purposes, I could drop talk of "rationality" altogether and speak only of its "making sense" to do and to feel certain things.
openaire   +2 more sources

Fin healing and regeneration in sturgeon

Journal of Fish Biology, 2018
Pectoral fin healing in fin spines and rays were examined in juvenile Atlantic sturgeon Acipenser oxyrinchus oxyrinchus following three different sampling techniques (n = 8–9 fish per treatment): entire leading fin spine removed, a 1–2 cm portion removed near the point of articulation, or a 1–2 cm portion removed from a secondary fin ray.
Peter J. Allen, Wes Baumgartner, Erin Brinkman, Robert J. DeVries, Heather A. Stewart, Daniel L. Aboagye, Shane W. Ramee, Michael A. Ciaramella, Charlie M. Culpepper, Lora Petrie‐Hanson   +9 more
openaire   +3 more sources

Iconography of the European Sturgeon in France

2011
Iconography of the European sturgeon in ...
Patrick Williot, Nathalie Desse-Berset
openaire   +3 more sources