Results 51 to 60 of about 13,979 (198)

Arctic lake trout (Salvelinus namaycush) show evidence of seasonal acclimation of cardiac adrenergic sensitivity but not heat tolerance

Journal of Fish Biology, EarlyView.
Abstract Many Arctic fishes experience prolonged periods of extreme cold and large thermal variation over both rapid and seasonal time scales which challenge critical physiological functions. In the central Canadian Arctic, we caught wild adult lake trout (Salvelinus namaycush) acclimatized to winter and summer temperatures to determine the extent to ...
Emily P. Williams, Les N. Harris, Jean‐Sébastien Moore, Ella K. Middleton, Shira A. Berkelhammer, Ben Speers‐Roesch, Matthew J. H. Gilbert   +6 more
wiley   +1 more source

Effects of astaxanthin supplementation in low-fishmeal feed on growth and antioxidant capacity of Oncorhynchus mykiss juvenile

Siliao yanjiu
The purpose of the study was to investigate the effects of astaxanthin supplementation in low-fishmeal feed on the growth performance, whole fish composition, serum biochemical indexes, and antioxidant capacity of serum and liver of triploid Oncorhynchus
LÜ Xiao-yan, LI Jian-dong, ZHANG Lei, SHU Bin, CHEN Ying, WU Kun-lan, GONG Yang-yang   +6 more
doaj  

Ultraestructura citohematológica de la trucha arco iris Oncorhynchus mykiss (Salmoniformes: Salmonidae)

Revista de Biología Tropical, 1999
Se estudió por ultraestructura la sangre periférica de 5 adultos de una población introducida de trucha arco iris (Oncorhynchus mykiis) cultivados en el Centro de Piscicultura Experimental del Neusa, (73° 38' 28"w; 5° 8'30"N), para describir la ...
Adriana Rodríguez Forero
doaj  

Resource use by threatened, native Bull Trout (Salvelinus confluentus) in the presence of two non‐native salmonids

Journal of Fish Biology, EarlyView.
Abstract Introduction of non‐native species contributes to the global decline of freshwater fishes by disrupting the diet and resources of native species through competition. Despite the potential for non‐native trout (Family: Salmonidae) to compete with native trout, non‐native trout species have been widely introduced worldwide to support ...
Jacqueline Pallard, Tim Jardine, Mark S. Poesch   +2 more
wiley   +1 more source

Tracking hatchery and wild Atlantic salmon (Salmo salar) smolt during river exit and early marine migration to assess survival, predation risk and migration speed

Journal of Fish Biology, EarlyView.
Abstract Significant declines in Atlantic salmon (Salmo salar) populations across their range have prompted an increased use of hatchery supplementation programmes to support population recovery. However, concerns persist regarding the effectiveness of these programmes due to limited understanding of how hatchery‐reared salmon perform post‐release in ...
Natalie C. Koopman, David C. Hardie, Robert J. Lennox, Morgan L. Piczak, Frederick G. Whoriskey, Eric B. Brunsdon, Jeffrey A. Hutchings, Glenn T. Crossin   +7 more
wiley   +1 more source

COMPOSICION DE LA DIETA DE ONCORHYNCHUS MYKISS (WALBAUM 1792) (PISCES: SALMONIDAE) EN UN SISTEMA FLUVIAL DE BAJA INTERVENCION ANTROPICA: ESTERO NONGUEN, VIII REGION, CHILE COMPOSITION OF THE DIET OF ONCORHYNCHUS MYKISS (WALBAUM 1792) (PISCES: SALMONIDAE) IN A RIVER SYSTEM OF LOW ANTROPOGENIC ACTION: NONGUEN STREAM, VIII REGION, CHILE

Gayana, 2002
Se estudió la dieta alimentaria de Oncorhynchus mykiss (Walbaum 1792) en un ecosistema fluvial con baja intervención antrópica determinando si hay correspon-dencia entre los ítemes consumidos por el pez y la oferta alimentaria.
Alejandro Palma, Ricardo Figueroa, Víctor H. Ruiz, Elizabeht Araya, Patricia Berríos   +4 more
doaj  

Comparative Studies Are Needed to Contextualize Stranding in Hydropeaking River Systems

Fisheries Management and Ecology, EarlyView.
Raegan Davis, Steven J. Cooke, Karen E. Smokorowski   +2 more
wiley   +1 more source

Spawning behaviour between endemic delta smelt (Hypomesus transpacificus) and non‐native Wakasagi (H. nipponensis) in the San Francisco estuary

Journal of Fish Biology, EarlyView.
Abstract In the San Francisco Estuary, non‐native Wakasagi Hypomesus nipponensis hybridize with endemic and endangered Delta Smelt H. transpacificus, and all wild‐caught hybrids have a maternal Wakasagi parent. However, the mechanisms that facilitate or impede hybridization and explain sex‐biased hybrid asymmetry between these two species remain ...
Yi‐Jiun Jean Tsai, Luke Ellison, Amanda J. Finger, Evan W. Carson, Nann A. Fangue, Tien‐Chieh Hung   +5 more
wiley   +1 more source

Ontogenetic niche partitioning in a facultatively anadromous salmonid: Implications for population dynamics

Global Ecology and Conservation
Species management and conservation efforts are often based on range-wide trends, assuming dynamic equilibrium across space and time, even though fine-scale variability may be driving local dynamics.
Lauren Diaz, Adam Duarte, Michael Beakes, James T. Peterson   +3 more
doaj   +1 more source

Freshwater hydrology emerges as the strongest predictor of phenological variability in a Southeast Alaska steelhead trout (Oncorhynchus mykiss) population

Journal of Fish Biology, EarlyView.
Abstract Phenological variation, such as the migration trends of salmonids, may provide resilience in changing environmental scenarios, influencing individual survival and population productivity. Phenological shifts may be particularly consequential for anadromous species that rely on seasonal cues for migration between freshwater and marine habitats ...
Juliana C. Cornett, Charles D. Waters, Krista M. Nichols, Frank P. Thrower   +3 more
wiley   +1 more source