Results 81 to 90 of about 31,230 (301)

Mechanical shock during egg de-adhesion and post-ovulatory ageing contribute to spontaneous autopolyploidy in white sturgeon culture (Acipenser transmontanus) [PDF]

open access: yes, 2020
Spontaneous autopolyploidy, a 1.5x increase in genome size resulting from second polar body retention after fertilization, has been documented in cultured sturgeons, with the proportion of spontaneous autopolyploid progeny ranging widely among maternal ...
Conte, FS   +6 more
core  

Studying the manner of sturgeon fishes migration to Gorganrud and Tajan rivers

open access: yes‬‭Majallah-i ̒Ilmī-i Shīlāt-i Īrān, 1997
One year study was carried out to understand the sturgeon fish’s migration to Gorganrud & Tajan Rivers from September 1993. Two different catching stations were selected in each river with gillnetting method.
F. Laloei
doaj  

REFERENCED TECHNOLOGICAL PERFORMANCES FOR STURGEON FINGERLING BREEDING IN INTENSIVE SYSTEM

open access: yesScientific Papers Animal Science and Biotechnologies, 2023
Work objective is to present an oversight regarding the modality to rearing the descendents of anadromous sturgeon species, Acipenser stellatus, Acipenser gueldenstaedti and Huso huso, obtained trough artificial reproduction, indicating successively, the
MARILENA TALPEŞ   +7 more
doaj  

Applications of Laparoscopic Techniques in Wildlife 腹腔镜技术在野生动物中的应用

open access: yesWildlife Letters, Volume 3, Issue 3, Page 124-137, September 2025.
In wildlife conservation, we have compiled the applications of laparoscopy, summarized into four areas. First, laparoscopy provides a reliable protocol for sex identification in wild species lacking apparent sexual dimorphism. Second, reproductive management with the involvement of laparoscopy is instrumental in maintaining and restoring species ...
Jiachen Li   +4 more
wiley   +1 more source

RAD‐tag and mitochondrial DNA sequencing reveal the genetic structure of a widespread and regionally imperiled freshwater mussel, Obovaria olivaria (Bivalvia: Unionidae)

open access: yesEcology and Evolution, 2022
Obovaria olivaria is a species of freshwater mussel native to the Mississippi River and Laurentian Great Lakes‐St. Lawrence River drainages of North America.
Jamie R. Bucholz   +6 more
doaj   +1 more source

A Curved‐Bar Rack‐Bypass System With Innovative Foil Shaped Bars: Hydraulics, Operational Aspects, and Swimming Behavior of Downstream Moving Brown Trout

open access: yesWater Resources Research, Volume 61, Issue 9, September 2025.
Abstract Curved bar rack ‐ bypass systems (CBR‐BS) are a promising technology for diverting downstream moving fish away from hydropower intakes. A CBR functions as a mechanical behavioral barrier by creating high velocity and pressure gradients along its bars, guiding approaching fish that exhibit avoidance reactions towards the bypass.
Fan Yang   +7 more
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  

ارتباط هورمون‌های استروئیدی با برخی خصوصیات بیولوژیکی گناد در تاس‌ماهی سیبری (Acipenser baeri) و ماهی استرلیاد (Acipenser ruthenus) [PDF]

open access: yesمجله بهره‌برداری و پرورش آبزیان, 2015
ارتباط بین هورمون‌های جنسی ( تستوسترون، 17-بتا استرادیول و پروژسترون) با وزن ماهیان ماده و برخی از خصوصیات بیولوژیکی گناد (درصد لقاح، میزان تخم سیال، شاخص گنادوسوماتیک، شاخص قطبیت و قطر تخمک) در 10 ماهی ماده از جمعیت مهاجر استرلیاد (Acipenser ruthenus ...
هاجر آذرین   +3 more
doaj  

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

Artemia Enrichment Strategies: A Comprehensive Review of Nutritional Enhancements With Emphasis on Fatty Acid Profiles in Aquatic Species

open access: yesReviews in Aquaculture, Volume 17, Issue 4, September 2025.
ABSTRACT Artemia (brine shrimp) is a foundational live feed in global aquaculture, renowned for its adaptability, ease of production, and favorable nutritional profile. However, in its natural state, Artemia contains suboptimal levels of highly unsaturated fatty acids (HUFAs), particularly docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA ...
Yathish Ramena   +3 more
wiley   +1 more source

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