Results 51 to 60 of about 3,318 (230)

Distribution of migratory fish in the stream (depth, velocity, body size, predators)

Biosystems Diversity, 2019
In order to supplement the available information for the eco-hydraulic approach to designing fish passages, taking into account the taxonomic, dimensional structure, as well as taking into account the presence of predatory fish in the stream, the ...
A. A. Chemagin
doaj   +1 more source

Fishes from the Upper Cretaceous Prince Creek Formation, North Slope of Alaska, and their palaeobiogeographical significance

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, J. Andrés López, Gregory M. Erickson, Jaelyn J. Eberle, Xochitl Muñoz, Lauren N. Wilson, Zackary R. Perry, Alison M. Murray, Lisa Van Loon, Neil R. Banerjee, Patrick S. Druckenmiller   +10 more
wiley   +1 more source

Nuclear Multi‐Microsatellite Marker Profiling Provides Clues to Molecular Genetic Diversity in Culture‐Based Caspian Beluga Sturgeon (Huso huso) Brood Stocks: Ecological Mirror for Restoration

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, Arash Javanmard, Faramarz Lolaei, Mohammad‐Javad Taghavi, Shima Bakhshalizadeh   +4 more
wiley   +1 more source

Survey on the metazoan parasites in Neogobius fishes from southeastern part of the Caspian Sea [PDF]

, 2011
In this study a parasitological investigation on 238 samples of Neogobius species from the south-east of Caspian Sea was carried out. The samples including Neogobius melanostomus (35), N. fluviatilis pallasi (103), N.
Aghaee-Moghadam, A., Mansouri-Habibabadi, Z., Masoumian, M., Pazooki, J.   +3 more
core  

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, Costas Perdikaris, Jörg Freyhof, Brian Zimmerman, Matthew Ford, Konstantinos Vlachopoulos, Nicholas Koutsikos, Ioannis Karaouzas, Maria Chamoglou, Eleni Kalogianni   +9 more
wiley   +1 more source

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, Valerio Orioli, Stefania Trasforini, Cesare Puzzi, Pietro Tirozzi, Luciano Bani, Olivia Dondina   +6 more
wiley   +1 more source

Late Miocene bony fishes from Pocşeşti (Republic of Moldova)

Біологічні студії, 2014
Isolated pharyngeal and jaw teeth of bony fishes, as well as numerous bones of other vertebrates dated by Late Miocene (middle late Sarmatian s.l. = early Tortonian, 9.8 Ma), were found in the alluvial sediments of Pocşeşti site (Republic of Moldova ...
O. M. Kovalchuk, V. A. Marareskul, T. F. Obadă   +2 more
doaj   +1 more source

Molecular Phylogenetic Relationships Based on Mitogenomes of Spider: Insights Into Evolution and Adaptation to Extreme Environments

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, Niyan Xiang, Xiaoman Gao, Guiyu Zhang, Tian Lu, Tao Yuan   +5 more
wiley   +1 more source

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, Oksana Vernygora, Alison M. Murray, Philip J. Currie   +3 more
doaj   +1 more source

Residents and Transients—Fish Community Dynamics in a Highly Anthropised Tidal North Sea Estuary Across the Annual Cycle

Journal of Applied Ichthyology, Volume 2025, Issue 1, 2025.
Tidal estuaries provide important spawning, nursery and feeding habitats for a wide diversity of species and serve as transit areas for diadromous fishes. However, they are globally among the most impacted aquatic ecosystems, pressured by anthropogenic alterations and global change.
Silvia Rosa Blum, Lasse Marohn, Marko Freese, Jan-Dag Pohlmann, Leander Höhne, Benedikt Merk, Wilhelm Hagen, Reinhold Hanel, Upali S. Amarasinghe   +8 more
wiley   +1 more source