Results 71 to 80 of about 10,537 (244)

Process-based modelling of decadal trends in growth, survival, and smolting of wild salmon (Salmo salar) parr in a Scottish upland stream [PDF]

, 2008
This paper reports a new model of the freshwater stages of an anadromous fish, at the core of which is a stochastic description of the size-at-age dynamics of a growing cohort. Emigration is assumed to require the individual to exceed a threshold size at
Tyldesley, Graham, Youngson, Alan F., Gurney, William S.C., Bacon, Philip J.   +3 more
core   +1 more source

Predicting presence and absence of trout (Salmo trutta) in Iran

Limnologica, 2014
Species distribution modelling, as a central issue in freshwater ecology, is an important tool for conservation and management of aquatic ecosystems. The brown trout (Salmo trutta) is a sensitive species which reacts to habitat changes induced by human impacts. Therefore, the identification of suitable habitats is essential.
Mostafavi, Hossein, Pletterbauer, Florian, Coad, Brian W., Mahini, Abdolrassoul Salman, Schinegger, Rafaela, Unfer, Günther, Trautwein, Clemens, Schmutz, Stefan   +7 more
openaire   +2 more sources

Impact of Environmental Conditions on the Spawning Migration of Sea Trout (Salmo trutta L.) in Two Large, Sub‐Arctic River Systems

Fisheries Management and Ecology, EarlyView.
ABSTRACT The global decline in salmonid stocks has increased the need for knowledge of local adaptations and life history strategies of salmonids. In this study, we used radio‐telemetry tracking data from sea trout populations in two large high‐latitude rivers to model upstream spawning migration speed of trout in response to prevailing environmental ...
L. Lähteenmäki, A. Romakkaniemi, R. Huusko, G. Hellström, P. Orell, J. Erkinaro, A. H. Rikardsen, J. Jensen, M. Snickars   +8 more
wiley   +1 more source

Age and growth of Salmo trutta fario L. from Yadong River, Tibet [PDF]

, 2007
A total of 462 specimens of Salmo trutta fario L. were collected front Yadong River, Tibet, during the period front 1999 to 2002. The population structure and growth characteristics of Salmo trutta fario L. were studied in [lie present paper.
Hao Fu-Hua (haofuhua@ihb.ac.cn), Chen Yi-Feng (chenyf@ihb.ac.cn), Hao Fu-Hua, Cai Bin, Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China, Tang Wei-Xing   +5 more
core  

Enquête sur la répartition des virus des salmonidés dans les salmonicultures de la région aquitaine et des régions limitrophes

Knowledge and Management of Aquatic Ecosystems, 1988
Dans le Sud-Ouest de la France, 599 prélèvements de truites AEC (Salmo gairdneri) (71 %), de truites fario (Salmo trutta) (14 %), d'ombles de fontaine (Salvelinus fontinalis) (1 %), de saumons atlantiques (Salmo salar) (2 %), et d'espèces diverses (12 %),
NOUGAYREDE P.
doaj   +1 more source

Morphological differences in the skin of marble trout <i>Salmo marmoratus</i> and of brown trout <i>Salmo trutta</i>

Folia Histochemica et Cytobiologica, 2012
Despite being genetically very closely related, the marble trout <em>Salmo marmoratus</em> and the brown trout <em>Salmo trutta</em> exhibit marked phenotypic differences, particularly with regard to skin pigmentation ...
Urška Sivka, Karel Halačka, Simona Sušnik Bajec   +2 more
doaj   +1 more source

Effect of salinity on motility and viability of salmonid spermatozoa [PDF]

Acta Ichthyologica et Piscatoria, 1979
Spermatozoa of trout (Salmo trutta L.), lake trout (S. trutta m. lacustris L.), rainbow trout (S. gairdneri Rich.), and brook trout (Salvelinus fontinalis (Mitch.)) kept at 8-10&deg;C without water in various diluting fluids behaved in all media more
L. Tomasik, A. Sobociński
doaj   +3 more sources

Use and Trust of Digital and Traditional Media Among Recreational Anglers in Germany: Findings From a Nationwide Survey

Fisheries Management and Ecology, EarlyView.
ABSTRACT Data on recreational fisheries are often limited, and scientists increasingly use digital platforms to collect information otherwise difficult to obtain. Using telephone‐diary survey data, this study examines angling‐related media use (face‐to‐face communication, angling magazines, TV or radio, YouTube, messenger services, social media, other ...
Wolf‐Christian Lewin, Marc Simon Weltersbach, Harry V. Strehlow   +2 more
wiley   +1 more source

Порівняльно-морфологічне дослідження еритроцитів форелі струмкової, лина та сома звичайного

Науковий вісник Східноєвропейського національного університету імені Лесі Українки: Серія: Біологічні науки, 2019
Досліджено еритроцити лина (Tinca tinca L.), сома звичайного (Silurus glanis L.) та форелі струмкової (Salmo trutta L.). Наведено відмінності щодо розмірів червонокрівців, їх щільності, ядерно-цитоплазматичного співвідношення й умісту гемоглобіну в крові
Yaroslav Omelkovets’
doaj   +1 more source

Variability in Fecundity–Body Size Relationships for Atlantic Salmon Associated With Body Condition and Life History

Fisheries Management and Ecology, EarlyView.
ABSTRACT While body size is the primary driver of fecundity, other factors may contribute to variation in these relationships. Anadromous populations of Atlantic salmon (Salmo salar) have diverse life histories, and fisheries management relies on accurate fecundity estimates.
Tara L. Imlay, Cindy Breau, Julien April, J. Brian Dempson, John Hayward, Jason LeBlanc, Jenny E. Reid, David Roth, Jamie T. Vallis, Travis E. Van Leeuwen, Laura K. Weir   +10 more
wiley   +1 more source