Results 81 to 90 of about 37,263 (271)

Effects of salmon lice Lepeophtheirus salmonis on wild sea trout Salmo trutta—a literature review

, 2015
Salmon farming increases the abundance of salmon lice, which are ectoparasites of salmonids in the sea. Here we review the current knowledge on the effects of salmon lice on wild sea trout. Salmon lice feed on host mucus, skin and muscle, and infestation
E. Thorstad, C. Todd, I. Uglem, P. Bjørn, P. Gargan, K. Vollset, E. Halttunen, S. Kålås, M. Berg, B. Finstad   +9 more
semanticscholar   +1 more source

Getting Scarce and Lure Shy: Impacts of Recreational Fishing on Coastal Northern Pike (Esox lucius) Abundance, Size Structure and Vulnerability to Angling

Fisheries Management and Ecology, Volume 32, Issue 3, June 2025.
ABSTRACT Controlled experiments have shown that northern pike (Esox lucius) is able to develop lure avoidance, but whether such patterns exist in the wild is unknown. We assessed the impact of recreational fishing on a natural population of pike in the southern Baltic Sea, from samples of three pairs of partially protected areas (pMPA) and nearby ...
Phillip Roser, Johannes Radinger, Fritz Feldhege, Marlon Braun, Robert Arlinghaus   +4 more
wiley   +1 more source

New data on the mechanism of water uptake in salmonid eggs [PDF]

Acta Ichthyologica et Piscatoria, 1973
Water uptake of eggs of Salmo trutta L. and Salmo gairdneri Rich. in water and 1/15 M buffers was studied. It was found that if buffers prevent the formation of the perivitelline space in the eggs placed in them immediately after spawning, they do not ...
A. Winnicki, C. Cykowska
doaj   +3 more sources

Three Decades of World Recreational Fishing Conferences: What Have We Learned About the Dynamics of Recreational Fisheries?

Fisheries Management and Ecology, EarlyView.
ABSTRACT Recreational fishing extends beyond catching fish, by connecting individuals with nature, generating environmental stewards, and contributing to local, regional, and national economies. Multi‐ and inter‐disciplinary research, integrative management, and policy approaches can support better assessment of potential impacts of recreational ...
Valerio Sbragaglia, Robert Arlinghaus, Faith Ochwada‐Doyle, Holly S. Embke, Lucas P. Griffin, Taylor L. Hunt   +5 more
wiley   +1 more source

Marine migration and habitat use of anadromous brown trout Salmo trutta

, 2015
This is the authors' accepted and refereed manuscript to the article.
S. H. Eldøy, J. Davidsen, E. Thorstad, F. Whoriskey, K. Aarestrup, T. Næsje, L. Rønning, A. Sjursen, A. Rikardsen, J. Arnekleiv   +9 more
semanticscholar   +1 more source

Salmo macrostigma (Teleostei, Salmonidae): Nothing more than a brown trout (S. trutta) lineage?

Journal of Fish Biology, 2018
We examined specimens of the macrostigma trout Salmo macrostigma, which refers to big black spots on the flanks, to assess whether it is an example of taxonomic inflation within the brown trout Salmo trutta complex.
C. Tougard, F. Justy, B. Guinand, E. Douzery, P. Berrebi   +4 more
semanticscholar   +1 more source

Past research and future directions in understanding how birds use their sense of smell

Ibis, EarlyView.
Our understanding of the functional importance of olfaction to birds has improved over the past 60 years, largely as the result of experimental studies testing how birds use their sense of smell in different contexts. As it is impossible to measure directly which odours birds can detect, we rely on measuring behavioural responses to scent cues or ...
Darcy Creece, Rafael Freire, Melanie Massaro   +2 more
wiley   +1 more source

A quantitative analysis of spermatogenesis in the trout, Salmo trutta fario

Cell and Tissue Research, 1983
The pattern of spermatogenesis was studied during an annual reprodutive cycle in adult male brown trout. The part of the testicular volume occupied by the nuclei of germ cells and of Sertoli cells, the lobular lumen and the extra-lobular space were measured. The number of germ cells was estimated by the total volume occupied by each cell divided by the
openaire   +8 more sources

Ecological aspects of nematode parasites of introduced salmonids from Valdivia river basin, Chile

Memorias do Instituto Oswaldo Cruz, 1991
Between 1986 and 1987 fishes distributed among the following species introduced in Chile, and from different sectors of the Valdivia river basin (39º30' - 40º00', 73º30' - 71º45'W), were examined: 348 Salmo trutta, 242 Salmo gairdneri, 24 Cyprinus carpio
Patricio Torres, Ximena Cabezas, Jose Arenas, Juan Carlos Miranda, Carlos Jara, Carlos Gallardo   +5 more
doaj   +1 more source

Do the biological characteristics of trout (Salmo trutta) smolts influence their spring migration timing and maiden marine sojourn duration?

Journal of Fish Biology, EarlyView.
Abstract Anadromous salmonids migrate seaward to exploit feeding and growth opportunities in marine habitats, yet how smolt biological characteristics influence their marine migratory behavior remains poorly understood. This study used 9 years of trout (Salmo trutta) population monitoring data from 15,595 tagged age‐0+ parr, 1033 smolts detected ...
Jonathan P. Gillson, Robert E. Blackwell, Stephen D. Gregory, Jessica E. Marsh, Tea Bašić, Sophie A. M. Elliott, R. Andrew King, David L. Maxwell, William D. Riley, Jamie R. Stevens, Alan M. Walker, Rasmus B. Lauridsen   +11 more
wiley   +1 more source