Results 41 to 50 of about 31,270 (237)
Heart conditioned response in Salmo trutta (L.) In the field of inductive current [PDF]
Acta Ichthyologica et Piscatoria, 1970 Heart conditioned responses in Salmo trutta (L.) in the field of inductive current were investigated by means of the cardiographic method. High excitability grade was proved.
R. Węgrzynowicz +2 more
doaj +3 more sources
Saprolegnia infections of salmonid fish [PDF]
, 1982 This paper deals firstly with the identification and characteristics of fungal pathogens that colonize salmonids and then considers the relative importance of the condition of the host fish and the environmental factors which may influence the ...
Pickering, A.D., Willoughby, L.G.
core
Individualised niches: an integrative conceptual framework across behaviour, ecology, and evolution
Biological Reviews, EarlyView.ABSTRACT Individuals differ. While seemingly trivial, this insight has nevertheless led to paradigm shifts, as three key fields of organismal biology have seen marked changes in key concepts over the past few decades. In animal behaviour, it has become increasingly recognised that behavioural differences among individuals can be stable over time and ...
Oliver Krüger +27 more
wiley +1 more source
Water temperature effects on cardiographic changes in Salmo trutta (L.) [PDF]
Acta Ichthyologica et Piscatoria, 1970 Investigations upon the lability of frequency and strength of heart systoles in Salmo trutta (L.) influenced by water temperature changes were carried out.
R. Węgrzynowicz, R. Zbanyszek
doaj +3 more sources
Grasas y Aceites, 2021 The seasonal effects on the fatty acid composition of triacylglycerol (TAG) and phospholipid (PL) in the muscle and liver of male Salmo trutta macrostigma were determined using the gas chromatographic (GC) method.
S. Kaçar, H. Kaya, M. Başhan
doaj +1 more source
Lipid correction of hydrogen stable isotope ratios in fish
Limnology and Oceanography: Methods, EarlyView.Abstract Lipids are known to affect stable isotope ratio of organisms, especially δ13C values, and simple arithmetic lipid‐correction procedures have been developed based on the carbon to nitrogen ratio (C : N) that is a proxy for lipid content. Equivalent issues will likely arise with the increasing use of hydrogen isotopes in ecology, but as yet no ...
Kang Wang +5 more
wiley +1 more source
An endogenous crepuscular rhythm of rainbow trout (Salmo gairdneri) photomechanical movements [PDF]
, 1982 1. The position of the epithelial pigment and cones in the retina of Salmo gairdneri was determined during extended periods of darkness in fish entrained to both artificial and natural light/dark cycles. 2. An endogenous rhythm of such photomechanical
Douglas, R. H.
core
Oikos, EarlyView.Competition theory suggests that interspecific prey competition can result in changes to the dietary niche, but obtaining timeseries of data from sympatric species experiencing temporal variation in competition is challenging. Scotland is an important area for two species of seals, but over the past 20 years, populations of harbour seals Phoca vitulina
Izzy Langley +7 more
wiley +1 more source
Effects of Different Farming Modes on Salmo trutta fario Growth and Intestinal Microbial Community
MicroorganismsThe gut microbiota plays a pivotal role in upholding intestinal health, fostering intestinal development, fortifying organisms against pathogen intrusion, regulating nutrient absorption, and managing the body’s lipid metabolism. However, the influence of
Zhuang-Zhuang Wang +4 more
doaj +1 more source
Feeding of sea trout (Salmo trutta L.) migrating upstream for spawning in lower Oder River system [PDF]
Acta Ichthyologica et Piscatoria, 1990 The paper presents an analysis of the food tracts of sea trout (Salmo trutta L.) migrating from the Baltic Sea for spawning to the Gulf of Szczecin and lower Oder River, i.e. to waters of the lower Oder system.
Z. Chełkowski +2 more
doaj +3 more sources