Results 41 to 50 of about 91,655 (272)

Gravel galore: Impacts of clear-cut logging on salmon and their habitats [PDF]

open access: yes, 2002
Timber harvest may have both direct and indirect effects on salmon, and with a few exceptions those effects result in lowered survival of salmon in their stream habitats compared with unlogged forest (Hicks et al. 1991b).
Hicks, Brendan J.
core   +1 more source

Comparative study of zootechnical parameters between two species of salmonids; Oncorhynchus aguabonita and Oncorhynchus mykiss [PDF]

open access: yesEgyptian Journal of Aquatic Biology and Fisheries, 2021
The main objective of this study is to compare the zootechnical parameters of two species of rainbow trout; Oncorhynchus aguabonita (mutant trout) and Oncorhynchus mykiss (wild trout) subjected to the same ecological and dietary conditions during the fry phase.
openaire   +1 more source

Cytotoxicity of 19 Pesticides in Rainbow Trout Gill, Liver, and Intestinal Cell Lines

open access: yesEnvironmental Toxicology and Chemistry, EarlyView.
Abstract The rainbow trout gill cell line (RTgill‐W1), via test guideline 249 of the Organisation for Economic Co‐operation and Development, has been established as a promising New Approach Methodology, although to advance confidence in the method more case studies are needed that: 1) expand our understanding of applicability domains (chemicals with ...
Sophie Emberley‐Korkmaz   +4 more
wiley   +1 more source

Physiological Responses to Acute Silver Exposure in the Freshwater Crayfish (\u3cem\u3eCambarus diogenes diogenes\u3c/em\u3e)—A Model Invertebrate? [PDF]

open access: yes, 2002
Adult crayfish (Cambarus diogenes diogenes) exposed to 8.41 ± 0.17 μg silver/L (19.4% as Ag+) in moderately hard freshwater under flow-through conditions for 96 h exhibited ionoregulatory disturbance, elevated metabolic ammonia (Tamm) production and ...
Bianchini, Adalto   +5 more
core   +1 more source

Comparison of wound healing effects between Oncorhynchus keta-derived polydeoxyribonucleotide (PDRN) and Oncorhynchus mykiss-derived PDRN [PDF]

open access: yesArchives of Craniofacial Surgery, 2018
Polydeoxyribonucleotide (PDRN) influencing cellular growth and differentiation is recognized to promote wound healing by stimulating tissue repair. Although PDRN can be extracted from human placentas, PDRN medications have recently been extracted from the semen of trout (Oncorhynchus mykiss) and salmon (Oncorhynchus keta).
Lee, Jong Hun   +5 more
openaire   +2 more sources

Marine trophic architecture and hidden ecological connections in the Strait of Magellan: keystone species and ecosystem resilience

open access: yesOikos, EarlyView.
Understanding the ecological implications of species coexistence is central to biodiversity studies and to identify environmental and anthropogenic drivers of ecosystem dynamics, where ecological network analysis offers valuable insights. This study examines the complexity, structure, and potential responses to disturbances of the Strait of Magellan's ...
Claudia D. Andrade   +4 more
wiley   +1 more source

Loss of riparian forests from wildfire led to increased stream temperatures in summer, yet salmonid fish persisted

open access: yesEcosphere, 2022
Native salmonid fishes—cutthroat trout (Oncorhynchus clarkii) and steelhead/rainbow trout (Oncorhynchus mykiss)—are ecologically, culturally, and economically important species distributed across western North America. These fish are generally considered
Dana R. Warren   +3 more
doaj   +1 more source

Zebrafish as animal model for aquaculture nutrition research. [PDF]

open access: yes, 2014
The aquaculture industry continues to promote the diversification of ingredients used in aquafeed in order to achieve a more sustainable aquaculture production system. The evaluation of large numbers of diets in aquaculture species is costly and requires
Feijoo, Carmen G   +2 more
core   +2 more sources

Bioclimatic, demographic and anthropogenic correlates of grizzly bear activity patterns in the Greater Yellowstone Ecosystem

open access: yesOikos, EarlyView.
Plasticity of diel activity rhythms may be a key element for adaptations of wildlife populations to changing environmental conditions. In the last decades, grizzly bears Ursus arctos in the Greater Yellowstone Ecosystem (GYE) have experienced notable environmental fluctuations, including changes in availability of food sources and severe droughts ...
Aurora Donatelli   +4 more
wiley   +1 more source

Beluga whale (Delphinapterus leucas) acoustic foraging behavior and applications for long term monitoring.

open access: yesPLoS ONE, 2021
Cook Inlet, Alaska, is home to an endangered and declining population of 279 belugas (Delphinapterus leucas). Recovery efforts highlight a paucity of basic ecological knowledge, impeding the correct assessment of threats and the development of recovery ...
Manuel Castellote   +6 more
doaj   +1 more source

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