Results 51 to 60 of about 3,771 (234)

COMPARATIVE ASSESSMENT OF TERMS FATTENING OF STURGEONS FISH IN THE WATERS OF THE CASPIAN STATES

open access: yesЮг России: экология, развитие, 2014
The article presents materials on the terms of the feeding area of sturgeon in the waters of all the Caspian States.
A. F. Sokolsky   +4 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, EarlyView.
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

Phylogenic and systematic study on sturgeons [PDF]

open access: yes, 1998
Sturgeons are anadromous and potamodromous species inhabiting the northern hemisphere, which have been existing for almost 100 million years. These species have been caught and processed by human for the past 2500 years.
Bahmani, M.
core   +1 more source

Distribution and genetic diversity of sturgeons feeding in the marine area of the Danube Delta Biosphere Reserve [PDF]

open access: yesScientific Annals of the Danube Delta Institute, 2013
The NW Black Sea basin supports sympatric population of beluga (Huso huso), stellate sturgeon (Acipenser stellatus) and Russian sturgeon (A. gueldenstadetii). These ecologically similar fish exhibit varying life strategies during their extended juvenile
HOLOSTENCO Daniela   +4 more
doaj   +1 more source

Biological peculiarities of artificial reproduction of sturgeons (Acipenseriformes) (a rеview)

open access: yesRibogospodarsʹka Nauka Ukraïni, 2023
Purpose. To analyze the scientific data of domestic and foreign authors regarding the peculiarities of artificial reproduction of sturgeonss (Acipenseriformes). To investigate the state of study of the phenomenon of polyspermic fertilization in sturgeons
O. Kuzmenko, N. Vovk
doaj   +1 more source

Application of a Presumptive Standards Approach to Evaluate Environmental Flows in a Highly Regulated River Basin

open access: yesRiver Research and Applications, EarlyView.
ABSTRACT The presumptive standards approach to environmental flows offers a method to develop interim guidelines for ecological and social‐cultural flow needs. The approach is based on deriving acceptable percent‐of‐flow limits based on naturalised flows (the absence of depletion or alteration of flow), and it can be an effective precursor to a full ...
Jennifer Lento   +6 more
wiley   +1 more source

The Plasticity of Acipenser Baeri (Brandt, 1869) Species Expressed in Technological Bio-Indicators in Different Breeding Systems

open access: yesScientific Papers Animal Science and Biotechnologies, 2023
The undergoing of two experiments of breeding Acipenser baeri seedlings, in two intensive systems of sturgeon growing, placed in different locations, led to the establishment of sturgeons’ growing rates and of their survival percentages.
Neculai Patriche   +8 more
doaj  

Influence of Age and Exposure Pathway on Copper and Cadmium Mixture Toxicity: A Study on Daphnia magna

open access: yesEnvironmental Toxicology, EarlyView.
ABSTRACT Metal contamination in aquatic ecosystems poses substantial risks to freshwater organisms, with mixture effects often deviating from predictions based on single‐metal toxicity. Understanding how age‐specific sensitivities and multiple exposure pathways influence mixture effects is critical for accurate risk assessment.
Sanah Majid   +3 more
wiley   +1 more source

RP1S7 – A Possible Marker for Sturgeon Hybrids Identification

open access: yesScientific Papers Animal Science and Biotechnologies, 2023
The Acipenseridae family includes sturgeon species that have the ability to easily generate interspecies hybrids in both natural and aquaculture conditions.
Gina – Oana Pistol   +4 more
doaj  

Chemical neuroanatomy of the hypothalamo-hypophyseal system in sturgeons

open access: yes, 2017
International audienceThe preoptic-hypothalamo-hypophyseal system of sturgeons, located at the base of the brain, has a neurosecretory role exerted by hypophysiotropic neurons most of them located in the preoptic and hypothalamic periventricular region ...
Kah, O.   +3 more
core   +1 more source

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