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Biodiversity, 2022
The downstream migration of young-of-the-year (YoY) of four sturgeon species (Acipenser ruthenus, A. stellatus, A. gueldenstaedtii and Huso huso) was monitored in the Danube at river km 396 in 8 continuous years (2014–2021).
S. Mihov, B. Margaritova, Veselin Koev
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The downstream migration of young-of-the-year (YoY) of four sturgeon species (Acipenser ruthenus, A. stellatus, A. gueldenstaedtii and Huso huso) was monitored in the Danube at river km 396 in 8 continuous years (2014–2021).
S. Mihov, B. Margaritova, Veselin Koev
semanticscholar +1 more source
Sturgeons (Pisces: Acipenseridae); threats and prospects
Journal of Fish Biology, 1990Life histories of 24 species of sturgeons are briefly summarized and threats to their existence are reviewed. The most important of these are fishing and physical disturbance of rivers (barriers; fluctuating water levels; gravel extraction). Conservation measures to limit and compensate for these impacts are reviewed.
Rochard, Eric +2 more
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The Hypothalamo-Hypophyseal System in Acipenseridae
General and Comparative Endocrinology, 1997Abstract The regeneration of the hypothalamo–hypophyseal system (HHS) has been studied in the sterlet following hypophysectomy (HypoX). Significant portions of non-apeptide and corticoliberinergic (CRH) neurosecretory cells (NSCs) underwent degeneration.
Andrey L. Polenov +2 more
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Zootaxa, 2021
The fossil record of the family Acipenseridae (sturgeons) extends to the Late Cretaceous (c. 85 MY), with a ghost lineage extending to approximately 120 MY when the first members of the family Polyodontidae are known.
E. Hilton, O. Kovalchuk, N. Podoplelova
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The fossil record of the family Acipenseridae (sturgeons) extends to the Late Cretaceous (c. 85 MY), with a ghost lineage extending to approximately 120 MY when the first members of the family Polyodontidae are known.
E. Hilton, O. Kovalchuk, N. Podoplelova
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Molecular Phylogeny of Acipenseridae: Nonmonophylyof Scaphirhynchinae
Copeia, 2002Abstract A phylogenetic hypothesis is presented illustrating relationships among 23 extant sturgeon species based on nucleotide data from five mitochondrial genes (cytochrome b, NADH5, control region, 16S, and 12S). The tree supports our previous hypotheses regarding relationships among species of Acipenser and Huso.
Vadim J. Birstein +2 more
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Incidental catches of Acipenseridae in the estuary of the River Evros, Greece
Journal of Applied Ichthyology, 2011Sturgeons are primitive large-bodied anadromous fish with most of the species living in the sea and reproducing in rivers. Because of their complex life history and their intensive exploitation, sturgeons are considered as globally threatened species and close to extinction (Gessner, 2000).
A. Sapounidis +4 more
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Osteology and phylogenetic interrelationships of sturgeons (Acipenseridae)
Environmental Biology of Fishes, 1997Sturgeons (Acipenseridae) are an ancient and unique assemblage of fishes historically important to discussions of actinopterygian evolution. Despite their basal position within Actinopterygii, rigorous comparative morphological studies of acipenserids have never been made, and most ideas about acipenserid evolution hinge on an untested impression that ...
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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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Journal of Natural History, 2021
All sturgeon species currently living in the Danube River are either critically endangered or at the edge of extinction. Sturgeons are mainly benthic feeders, with a diet of molluscs, crustaceans, and small fishes.
B. Margaritova +4 more
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All sturgeon species currently living in the Danube River are either critically endangered or at the edge of extinction. Sturgeons are mainly benthic feeders, with a diet of molluscs, crustaceans, and small fishes.
B. Margaritova +4 more
semanticscholar +1 more source
Ultrastructure of the Caudal Neurosecretory System in Acipenseridae
1978The fine structure of the cells of the caudal neurosecretory system in Acipenseridae exhibits all characteristic neurosecretory features. They have large, polymorphic nuclei rich in chromatin, with numerous nucleoli. The nuclear envelope has many pores. Numerous intranuclear cytoplasmic invaginations are observed; these are characteristic of the nuclei
N. A. Efimova, I. I. Saenko
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