Results 71 to 80 of about 24,397 (253)

Cryopreservation of sperm in Acipenser nudiventris, Huso huso, Acipenser stellatus and Acipenser persicus in the breeding season

, 2007
Considering decrease in total catch of sturgeon & threat of extinction in their stocks, special measures might be adopted. Sperm cryopreservation is one of the suitable methods to prepare bank of frozen gamete for future use in artificial breeding in order to prohibit extinction of sturgeon stocks. This study carried out on 27 male sturgeon during 2001-
Alipoor, Alireza, Norooz Fashkhami, M.R., Baradaran Novairi, Sh.   +2 more
openaire   +3 more sources

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

‬‭Majallah-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  

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

مجله 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, محمدرضا ایمانپور, وحید تقی زاده, محمد پور دهقانی   +3 more
doaj  

Species Redundancy and Niche Overlap: Mechanisms Maintaining Fish Community Function in Yangtze River Lakes in the Face of Lateral Hydrologic Connectivity Obstruction

Ecology and Evolution, Volume 15, Issue 12, December 2025.
We revealed a significant decrease in both fish species richness and functional richness across temporal (1950s, 1980s, and 2000s) and spatial (connected lakes, partially connected lakes, and disconnected lakes) scales. Nevertheless, the complexity of fish communities' co‐occurrence networks does not exhibit a significant decrease with a decrease in ...
Yuping Xu, Mengxuan Li, Dongmei Yu, Quehui Tang, Yiming Hu, Zhixin Zhou, Jianchao Liang, Huijian Hu   +7 more
wiley   +1 more source

Détermination de l'âge et croissance de l'Acipenser sturio L. de la Gironde

Knowledge and Management of Aquatic Ecosystems, 1959
La détermination de l'âge de 66 Esturgeons (Acipenser sturio L), péchés en 1958 en Gironde, a été réalisée par l'étude de coupes minces effectuées principalement dans le premier rayon de la nageoire pectorale.
MAGNIN É.
doaj   +1 more source

Development of DNA identification for sturgeon species with the use of real time polymerase chain reaction

Ribogospodarsʹka Nauka Ukraïni, 2017
Purpose. Sturgeon is the common name for the 27 species of fish belonging to the family Acipenseridae. The family is grouped into four genera: Acipenser, Huso, Scaphirhynchus and Pseudoscaphirhynchus. Four species may now be extinct.
V. Spyrydonov
doaj   +1 more source

Reviewing the Potential for Behavioral Guidance to Improve Downstream Passage of Out‐Migrating Anguillid Eels

River Research and Applications, Volume 41, Issue 10, Page 2287-2296, December 2025.
ABSTRACT Hydroelectric dams and their turbine infrastructure threaten out‐migrating anguillid eels en route to marine spawning grounds. For decades, invested parties have attempted to guide eels away from turbines and toward safe passage routes. A subset of this work (hereafter behavioral guidance) has involved exploiting sensory biology (e.g., sight ...
M. E. Cole MacLeod, Thomas C. Pratt, Chris K. Elvidge, Paul S. Kemp, Steven J. Cooke   +4 more
wiley   +1 more source

Mycobacterium chelonae associated with tumor-like skin and oral masses in farmed Russian sturgeons (Acipenser gueldenstaedtii) [PDF]

, 2014
Peer ...
Antuofermo, Elisabetta, Burrai, Giovanni P., Caffara, Monica, Giorgi, Ilaria, Hetzel, Udo, Nuvoli, Sara, Pais, Antonio, Pedron, Claudio, Prearo, Marino, Rocca, Stefano   +9 more
core   +4 more sources

Environmental DNA as a tool for hydropower impact assessments: current status, special considerations, and future integration

Biological Reviews, Volume 100, Issue 6, Page 2584-2607, December 2025.
ABSTRACT Globally there is an urgent need to find sustainable solutions to balance energy production with the protection of vulnerable species and conservation of biodiversity. This is particularly critical for freshwater ecosystems, habitats, and species that may be impacted by hydropower development and operations needed to meet energy grid demands ...
Kristine N. Moody, Steven T. Gardner, Line E. Sundt‐Hansen, Frode Fossøy, Dana N. McCoskey, Katherine J. Morrice, Brenda M. Pracheil   +6 more
wiley   +1 more source

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

LWT
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-
Mariana Rodrigues da Silva, Pedro Martínez Noguera, Bastien Debeuf, Mikael A. Petersen, Helene M. Loos, Andrea Buettner   +5 more
openaire   +1 more source