Results 61 to 70 of about 9,557 (207)

Ultrastructure of Vitellogenic Ovarian Follicles and Morphogenesis of the Oocyte Envelope in the Eurasian Ruffe (Gymnocephalus cernua Linnaeus 1758) (Teleostei, Perciformes)

open access: yesJournal of Morphology, Volume 287, Issue 9, September 2026.
Ruffe's vitellogenic ovarian follicles consists of a single oocyte surrounded by follicular cells, a basal lamina, and thecal cells. The oocytes are polarized and covered by a primary envelope. The follicular cells diversify into micropylar and mainbody cells. The latter have dark and bright cytoplasms.
Monika Żelazowska, Roman Kujawa
wiley   +1 more source

Comparison of oxidant and antioxidant status of seminal plasma and spermatozoa of several fish species

open access: yesCzech Journal of Animal Science, 2013
Oxidant and antioxidant activity in seminal plasma was compared with that in spermatozoa of teleost (common carp Cyprinus carpio and brook trout Salvelinus fontinalis) and chondrostean (Russian sturgeon Acipenser gueldenstaedtii, Siberian sturgeon ...
A. Shaliutina-Kolešová   +3 more
doaj   +1 more source

Development and Improvement of Habitat Suitability Criteria for Instream Habitat Assessments Conducted in Support of Environmental Flows in Florida

open access: yesRiver Research and Applications, Volume 42, Issue 7, Page 1474-1499, September 2026.
ABSTRACT Florida's regulatory framework requires the establishment of minimum flows to protect aquatic ecosystems and water resources from significant harm. One of the primary methods used to evaluate significant harm is assessment of instream habitat, which relies on Habitat Suitability Criteria (HSC) curves that relate flow regimes and habitat ...
Eric J. Nagid, Kym Rouse Holzwart
wiley   +1 more source

Determining karyotype of sturgeons

open access: yes‬‭Majallah-i ̒Ilmī-i Shīlāt-i Īrān, 1995
Karyotype of sturgeons Huso huso, Acipenser stellatus, and Acipenser persicus from southern region of- the Caspian Sea, has been examined by use of blood tissue culture. By counting fifty completely extended metaphase plates, the number of chromosomes in
M. Norozfashkhami; M. Khosroshahi
doaj  

Nanotechnology‐Based Immunostimulants in Aquaculture: Mechanisms, Advances and Practical Applications

open access: yesVeterinary Medicine and Science, Volume 12, Issue 5, September 2026.
Nano‐immunostimulants improve fish health through targeted and controlled delivery of immunostimulatory compounds. Biodegradable polymeric and lipid‐based nanocarriers enhance immune responses, bioavailability and disease resistance while reducing antibiotic dependence and environmental impact.
Mustafa Öz, Enes Üstüner
wiley   +1 more source

Acipenser albertensis

open access: yes, 1902
Published as part of Lambe L. M., 1902, New genera and species from the Belly River Series (mid-Cretaceous), pp. 25-81 in Geological Survey of Canada Contributions to Canadian Palaeontology 3 on page 29, DOI: 10.5281/zenodo ...
openaire   +2 more sources

Aroma profiling and volatile fingerprinting of commercial caviar (Acipenser baerii and Acipenser gueldenstaedtii) [PDF]

open access: yesLWT
The odorant composition and static headspace PTR-MS profiles of two commercial caviar samples (Acipenser baerii and Acipenser gueldenstaedtii) were investigated. A combined sensory-instrumental investigation applying solvent-assisted flavor evaporation (SAFE), gas chromatography-olfactometry (GC-O), gas chromatography-mass spectrometry (GC-MS), and two-
Rodrigues da Silva, Mariana   +5 more
openaire   +2 more sources

Isolation and characterization of microsatellites in Chinese sturgeon, Acipenser sinensis

open access: yes, 2005
From (GATA)(n) and (AAAG)(n) enriched genomic libraries for the Chinese sturgeon (Acipenser sinensis), 50 primer pairs were developed using the fast isolation by AFLP of sequences containing repeats (FIASCO) protocol.
Zhu, B   +5 more
core   +1 more source

Bioaccumulation of heavy metals, Ni, Cd and Pb in muscle, liver and caviar of farmed Acipenser baerii from Khuozestan Province

open access: yes‬‭Majallah-i ̒Ilmī-i Shīlāt-i Īrān, 2017
The presence of heavy metals in our environment has been of great concern because of their toxicity when their concentration is more than the permissible level. These metals enter in the environment by different ways e.g. industrial activities.
A Mohammad Salehi; Velayatzadeh Velayatzadeh; N Karami Rad
doaj  

Effect of initial feeding on the growth and survival of larvae Acipenser baerii ♀×Acipenser schrenckii

open access: yesSiliao yanjiu, 2021
The aim of the experiment was to study the effect of initial feeding on the growth and survival of larvae Acipenser baerii ♀×Acipenser schrenckii ♂. Larvae Acipenser baerii ♀×Acipenser schrenckii ♂ with average body weight of (0.034 4±0.001 8) g were ...
Yan-hua LI   +5 more
doaj  

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