Results 81 to 90 of about 187,339 (376)

Scanning Electron Microscopy of the Rainbow Trout (Salmo gairdneri Richardson) Spermatozoon [PDF]

open access: yes, 1976
The scanning electron microscope was used to determine the morphology of the rainbow trout (Salmo gairdneri Richardson) spermatozoon. The spermatozoon is approximately 32 μm long and consists of a head, mitochondrial collar, and flagellum.
Fribourgh, James H., Soloff, Bernard L.
core   +2 more sources

Effects of graded levels of standard soybean meal on intestinal structure, mucosal enzyme activities, and pancreatic response in Atlantic salmon (Salmo salar L.)

open access: yes, 2003
Duplicate tanks of c.280 g Atlantic salmon (Salmo salar L.) were fed for 60 days on diets in which fishmeal was substituted with graded levels of extracted soybean meal (SBM) comprising 0%, 10%, 15%, 20%, 25% or 35% of total protein.
Å. Krogdahl   +2 more
semanticscholar   +1 more source

A century of theories of balancing selection

open access: yesBiological Reviews, EarlyView.
ABSTRACT Traits that affect organismal fitness are often highly genetically variable. This genetic variation is vital for populations to adapt to their environments, but it is also surprising given that nature – after all – ‘selects’ the best genotypes at the expense of those that fall short.
Filip Ruzicka   +10 more
wiley   +1 more source

O risco de não ir a Jerusalém. Lendo o Salmo 127 no contexto dos Salmos 120-134

open access: yesHorizonte, 2018
O tema do artigo é a análise retórica do Salmo 127 no contexto dos “Salmos das Subidas” (Salmos 120 a 134). O objetivo consiste em analisar a relação retórica possível entre o sentido da composição e o desempenho processional dos peregrinos de Jerusalém.
Osvaldo Luiz Ribeiro
doaj   +1 more source

Host Switching of Zoonotic Broad Fish Tapeworm (Dibothriocephalus latus) to Salmonids, Patagonia [PDF]

open access: yes, 2019
Diphyllobothriosis is a reemerging zoonotic disease because of global trade and increased popularity of eating raw fish. We present molecular evidence of host switching of a human-infecting broad fish tapeworm, Dibothriocephalus latus, and use of ...
Arbetman, Marina Paula   +6 more
core   +1 more source

Contemporary Methods for Capturing Juvenile Salmonids in the Marine Environment

open access: yesFish and Fisheries, EarlyView.
ABSTRACT Anadromous salmonids play vital roles in marine and freshwater ecosystems. The most abundant of these fishes—Pacific salmon (Oncorhynchus spp.)—are integral to coastal ecosystems and communities across the North Pacific Rim, but numerous populations are experiencing dramatic declines, particularly towards the south of their range.
Sean C. Godwin   +6 more
wiley   +1 more source

Costs of Chronic Waterborne Zinc Exposure and the Consequences of Zinc Acclimation on the Gill/Zinc Interactions of Rainbow Trout in Hard and Soft Water [PDF]

open access: yes, 1999
Juvenile rainbow trout were exposed to zinc in both moderately hard water (hardness 5 120 mg CaCO3/L, pH = 8.0, Zn = 150 μg/L or 450 μg/L) and soft water (hardness = 20 mg CaCO3/L, pH = 7.2, Zn = 50 μg/L or 120 μg/L) for 30 d.
Alsop, Derek H.   +3 more
core   +2 more sources

A Review of Phage Therapy for Aquaculture Applications: Efficacy, Health Ramifications and Research Challenges

open access: yesFish and Fisheries, EarlyView.
Bacteriophage therapy is characterised by numerous advantages, facilitating its diverse aquaculture application and efficacy as an antibiotic alternative mitigating the spread of antimicrobial‐resistant pathogens. Contributing to the modern reappraisal of the aquaculture application of bacteriophage therapy, challenges impeding its widespread ...
Louise James   +4 more
wiley   +1 more source

Why do some fish fight more than others? [PDF]

open access: yes, 2012
Reversible changes in how readily animals fight can be explained in terms of adaptive responses to differences in the costs and benefits of fighting. In contrast, long-term differences in aggressiveness raise a number of questions, including why animals ...
Huntingford, F.   +2 more
core   +1 more source

Genetic variation in brown trout Salmo trutta across the Danube, Rhine, and Elbe headwaters: a failure of the phylogeographic paradigm?

open access: yesBMC Evolutionary Biology, 2013
BackgroundBrown trout Salmo trutta have been described in terms of five major mtDNA lineages, four of which correspond to major ocean basins, and one, according to some authors, to a distinct taxon, marbled trout Salmo marmoratus.
E. Lerceteau-Köhler   +3 more
semanticscholar   +1 more source

Home - About - Disclaimer - Privacy