Results 51 to 60 of about 530 (163)
A new well-preserved sturgeon (Chondrostei: Acipenseridae) from the Late Cretaceous of Alberta, Canada [PDF]
Research & Knowledge, 2017 In June 2016, the remains of an articulated fish was discovered during field work in Dinosaur Provincial Park, in southern Alberta, Canada. Articulated remains of fishes are very rare in the park, so this specimen was carefully collected and prepared ...
Hiroki Sato +3 more
doaj +1 more source
Papers in Palaeontology, Volume 11, Issue 3, May/June 2025.Abstract The Upper Cretaceous Prince Creek Formation (PCF) of northern Alaska offers a unique glimpse into northern high‐latitude, non‐marine vertebrate assemblages, providing critical data on polar ecosystems during the late Campanian (c. 73 Ma).
Donald B. Brinkman +10 more
wiley +1 more source
Majallah-i ̒Ilmī-i Shīlāt-i Īrān, 2013 Microalgae as a source of valuable compounds such as fatty acids are isolated from the natural environments and their mass production with high nutritional value is one the necessities of many hatcheries.
F. Chubian email ; Z. Ramezanpour; M. Hafezieh; M. Sadeghirad; K. Hadadi Moghadam; Z. Pazhand; R. Rofchaei; H.R. pourali
doaj
Veterinary Medicine and Science, Volume 11, Issue 3, May 2025.We conducted a study involving 436 individuals of both sexes, collected from eight breeder private farms with diverse breeding histories and generational backgrounds. Through the application of eight microsatellites, we amplified a non‐coding core genomic region in the species, followed by capillary electrophoresis (CE) to provide double confirmation ...
Mehdi Moghim +4 more
wiley +1 more source
Majallah-i ̒Ilmī-i Shīlāt-i Īrān, 2013 This study was conducted to determine the effect of replacing fish meal with soybean meal on growth rate, feed conversion ratio and chemical composition of carcass, fillet and liver in juvenile stellate sturgeon (Acipenser stellatus).
B. Emdadi email ; M.M. Sajadi; M.A. Yazdani; M. Shakoorian
doaj
Global Patterns and Drivers of Freshwater Fish Extinctions: Can We Learn From Our Losses?
Global Change Biology, Volume 31, Issue 5, May 2025.Nearly one‐third of freshwater fish species are currently at risk of extinction, with 100 species already lost. This study examines extinction patterns over the past 165 years, identifying habitat modification and loss, pollution, and invasive species as key drivers.
Leonidas Vardakas +9 more
wiley +1 more source
Effects of different photoperiods on the survival and growth of beluga sturgeon (huso huso) larvae
International Journal of Aquatic Biology, 2013 Effect of different photoperiodic regimes was evaluated on growth performance and survival rate of the Beluga (Huso huso) prelarvae and larvae. Newly hatched prelarvae were stored in 5 round fiberglass 500‑L tank with different photoperiod (24L:00D, 18L ...
Hamid Eshagh zadeh +4 more
doaj
Unlocking the Secrets of Sturgeon Ecology: Lessons From Conservation Efforts in Northern Italy
Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 35, Issue 2, February 2025.ABSTRACT This study aimed to investigate the ecology of the Adriatic sturgeon (Acipenser naccarii) and Beluga sturgeon (Huso huso) in the Po basin in northern Italy, where both species have faced significant population declines. Using data collected from three LIFE projects, we investigated movement behaviour and habitat selection of the species ...
Fabiola Labria +6 more
wiley +1 more source
Body shape changes during the early development of the Beluga (Huso huso)
International Journal of Aquatic Biology, 2013 Early body shape changes of beluga sturgeon were studied using landmark-based geometric morphometric approach to recognize its allometric growth pattern. Sampling was done from hatching up to 50 days post hatching (DPH).
Reza Asgari +5 more
doaj
Ecology and Evolution, Volume 15, Issue 1, January 2025.We used the largest dataset of mitogenomes available to reconstruct phylogenetic relationships and ancestral ranges and traits in spiders. ABSTRACT In this study, we performed a comparative analysis based on a total of 255 spider mitogenomes and four outgroups, of which the mitogenomes of 39 species were assembled de novo, to explore the phylogenetic ...
Rongxiang Zhang +5 more
wiley +1 more source