Results 91 to 100 of about 50,329 (326)

A Meta‐Analysis on Environmental Triggers of Spawning Migrations Reveals a New Classification of Thermal Guilds in European Freshwater Fishes

Fish and Fisheries, EarlyView.
ABSTRACT Fish migration through river networks is essential for completing life cycles and accessing critical habitats, but fragmentation increasingly disrupts spawning movements. In Europe, over one million barriers limit connectivity and create trade‐offs between ecological integrity and human uses, such as hydropower, flood control, fisheries and ...
Christian Schlautmann, Robert Arlinghaus, Daniel Hering, Armin W. Lorenz, Christian Wolter, Christian Schürings   +5 more
wiley   +1 more source

11-Deoxycorticosterone (DOC)’s Action on the Gill Osmoregulation of Juvenile Rainbow Trout (Oncorhynchus mykiss)

Biology
In aquaculture, stress can negatively affect fish growth. For years, the cortisol hormone has been thought to play both glucocorticoid and mineralocorticoid functions. Nevertheless, recent research has suggested that 11-deoxycorticosterone (DOC) released
Rodrigo Zuloaga, Luciano Ahumada-Langer, Jorge Eduardo Aedo, Alfredo Molina, Juan Antonio Valdés   +4 more
doaj   +1 more source

Factors Influencing the Stocking of Juvenile Pikeperch (Sander lucioperca)

Fisheries Management and Ecology, EarlyView.
ABSTRACT Predator species of fish play crucial roles in ecosystem balance through top‐down control, a mechanism frequently exploited in biomanipulation to stock predator species. Juvenile pikeperch (Sander lucioperca) were stocked (n = 52,887) in spring 2023 and 2024 and autumn 2023 to compare stocking efficiency between Recirculation Aquaculture ...
Michaela Holubová, Petr Blabolil, Martin Čech, Vladislav Draštík, Jaroslava Frouzová, Luboš Kočvara, Jan Kubečka, Václav Kučera, Oleksandr Malinovskyi, Milan Muška, Marie Prchalová, Rubén Rabaneda‐Bueno, Pavel Rychtecký, Milan Říha, Zuzana Sajdlová, Michal Tušer, Mojmír Vašek, Tomáš Jůza   +17 more
wiley   +1 more source

Observations on the physiological development of trout eggs [Translation from: Roux. Arch. f. Entwicklungsmechanik der Organismen, 114. 771, 1929] [PDF]

, 1929
The osmotic pressure of the perivitelline fluid and the yolk of trout (Salmo trutta) eggs were measured separately by the Drucker-Schrein method. The permeability of the egg membrane and the variations in the osmotic pressure of the eggs when placed in ...
Svetlov, P.
core  

Morphometric and External Injury Characterization of Rainbow Trout (O. mykiss) Used for Stocking in the Alpine River Inn (Bavaria, Germany)

Fisheries Management and Ecology, EarlyView.
ABSTRACT Stocking fish is a common practice in fisheries management, particularly for species of high conservation value or economic importance. Despite its widespread use, systematic evaluation of fish stockings remains scarce. This includes non‐native species such as rainbow trout (Oncorhynchus mykiss), which are intensively stocked into European ...
Christoffer Nagel, David Goldbrunner, Josef Knott, Joachim Pander, Juergen Geist   +4 more
wiley   +1 more source

Genetic diversity, admixture, and hatchery influence in Brook Trout (Salvelinus fontinalis) throughout western New York State

Ecology and Evolution, 2019
Although Brook Trout are distributed across most of eastern North America, population numbers have declined in many regions due to habitat loss, climate change, and competition with non‐native species.
Stephanie Dowell Beer, Scott Cornett, Peter Austerman, Betsy Trometer, Thomas Hoffman, Meredith L. Bartron   +5 more
doaj   +1 more source

Production of single-domain magnetite throughout life by sockeye salmon, Oncorhynchus nerka [PDF]

, 1988
Although single-domain particles of biogenic magnetite have been found in different species of pelagic fishes, nothing is known about when it is synthesized, or about whether the time during life when it is produced is correlated with the development of
Groot, Cornelis, Kirschvink, Joseph L., Quinn, Thomas P., Walker, Michael M.   +3 more
core   +1 more source

Local Angler Knowledge Reveals Declines in Fishing Quality for Black Bass in Lakes of Eastern Ontario

Fisheries Management and Ecology, EarlyView.
ABSTRACT Local ecological knowledge can be useful to assess data‐limited fisheries such as the Ontario Black Bass (Micropterus spp.) recreational fishery. We surveyed local anglers using the Life History Calendar approach to determine if there were perceived changes in fishing quality for Black Bass in eastern Ontario across different time periods. For
Joel Zhang, David P. Philipp, Julie E. Claussen, Cory D. Suski, Vivian M. Nguyen, Nathan Young, Luc LaRochelle, Justin W. Lombardo, Steven J. Cooke   +8 more
wiley   +1 more source

NRA North west salmonid microtagging programme 1987-1994 [PDF]

, 1994
The microtagging programme began in 1987 using hatchery reared salmon originating from the rivers Caldew and Hodder and subsequently included the Lune (1988) and Ribble (1989).
Apprahamian , M.W., Farooqui, M.A.
core  

Differences in early developmental rate and yolk conversion efficiency in offspring of trout with alternative life histories [PDF]

, 2016
Partial migration, in which some individuals of a population migrate while other individuals remain resident, is generally associated with ontogenetic shifts to better feeding areas or as a response to environmental instability, but its underlying ...
Abbott, Allen, Bachman, Berghe, Berthold, Braun, Brockelman, Brodersen, Burton, Burton, Chapman, Cutts, Cutts, Dodson, Dziminski, Eek, Ege, Einum, Elliott, Fleming, Fleming, Forseth, Grayson, Gross, Imre, Jonsson, Jonsson, Jonsson, Kamler, Killen, Kinnison, Leeuwen, Metcalfe, Monaghan, Morinville, Mousseau, Nakano, O'Neal, Olofsson, Olsson, Olsson, Olsson, Paez, Pakkasmaa, Pulido, Quinn, R Core Team, Reid, Reznick, Roff, Rollinson, Rollinson, Rosenfeld, Régnier, Sandell, Skoglund, Sloman, Steffensen, Stevens, Taborsky, Taylor, Taylor, Thorpe, Wysujack   +63 more
core   +1 more source