Results 141 to 150 of about 1,208,293 (353)

Individual identification of bony fishes using unique body markings: Implications and applications

Journal of Fish Biology, EarlyView.
Abstract The natural variation in animal body markings, such as spots, stripes and blotches, offers a powerful tool for researchers, conservationists, citizen scientists and resource managers to distinguish specific individuals within species. By building libraries of photo‐identified individuals, we can track and differentiate individuals over time ...
Katie Dunkley, Samuel R. Matchette, Cheuk Yu Hau, Christian Drerup, Roxanne B. Holmes, Yvonne Sadovy de Mitcheson, James E. Herbert‐Read   +6 more
wiley   +1 more source

The intake of wooden debris in running waters - a method for protecting fish stocks against predation by cormorants? [PDF]

, 2012
In sechs aufeinander folgenden Jahren wurde der Bestand an Bachforellen in einem naturnahen Zufluss der Donau dokumentiert. Nach dem ersten Jahr der Untersuchung wurden ufernahe Bäume gefällt und ins Gewässer gebracht, um den Fischbestand vor der ...
Baer, Jan, Konrad, Manuel
core  

The effect of hypophysectomy and prolactin therapy on water balance of the brown trout Salmo trutta [PDF]

, 1975
S. O. Oduleye
openalex   +1 more source

Diplostomum‐Induced Sac Formation in Lenses of Ameiurus Bullheads: A Host Defence Response?

Journal of Fish Diseases, EarlyView.
ABSTRACT Trematodes of the genus Diplostomum (Diplostomidae) are widely distributed and significant fish pathogens known for causing a range of negative effects. Any mechanism that protects the host from the parasite thus represents an evolutionary advantage.
Markéta Ondračková, Andrea Valigurová, Iveta Hodová, Veronika Bartáková, Maria Yu. Tkachenko, Michal Janáč, Lukáš Vetešník   +6 more
wiley   +1 more source

Recreational angling demand in a mixed resource fishery. ESRI WP622, June 2019 [PDF]

, 2019
Several large Irish lake fisheries comprise both pike (Esox Lucius) and brown trout (Salmo trutta). Due to predation on trout, pike stocks are actively managed in several locations with the objective of enhancing the trout fishery, which is a policy ...
Curtis, John, Grilli, Gianluca, Hynes, Stephen, Mukhopadhyay, Soumyadeep   +3 more
core  

Spleen as an Alternative Tissue for Estimating Tetracapsuloides bryosalmonae Load, Prevalence and Its Relationship With Proliferative Kidney Disease in Brown Trout

Journal of Fish Diseases, EarlyView.
ABSTRACT Accurate pathogen detection is essential in fish health management and disease prevention. Pathogens often target different host tissues, and monitoring alternative target organs can provide important insights into disease progression. We evaluated the spleen as an alternative to the kidney for estimating the load and prevalence of the ...
Magnus Lauringson, Lilian Pukk, Siim Kahar, Oksana Burimski, Riho Gross, Veljo Kisand, Anti Vasemägi   +6 more
wiley   +1 more source

A long-term study of the impact of the invasive species Eurasian minnow Phoxinus phoxinus on brown trout Salmo trutta production in a high mountain lake, Southern Norway

Fauna Norvegica
The shallow Lake Skjerja was originally one of the most outstanding brown trout lakes on the Hardangervidda mountain plateau. During the period 1973–1985, the annual yield was on average 3.35 kg ha-1.
Tore Qvenild, Trygve Hesthagen, Jon Museth   +2 more
doaj  

Eden Fisheries Advisory Committee 14th January, 1975 [PDF]

, 1975
This is the report from the Eden Fisheries Advisory Committee meeting, which was held on the 14th January, 1975. It covers information on the proposed regional fishing licence duties, and the report of the Working Party on future regional hatchery ...

core  

Food and energy in the diet of brown and rainbow trout from Lake Benmore, New Zealand [PDF]

, 1986
Nigel H. McCarter
openalex   +1 more source

Saprolegnia parasitica S1 and S2 Strains Differ in Zoospore Transition Timing and Pathogenicity Against Juvenile Atlantic Salmon (Salmo salar)

Journal of Fish Diseases, EarlyView.
ABSTRACT S1 and S2 strains of S. parasitica are both common among diseased farmed salmonids in Nova Scotia, whereas globally S1 is rare and S2 is common. Following the initiation of asexual maturation and overnight incubation at 20°C then harvest, and incubation at 10°C in vitro, S2 secondary zoospores mostly transformed into cysts within 3 h, and by 6 
James Duston, Mohammad Nasif Sarowar, Tyler Schmidt‐Schaun, Tessema Astatkie   +3 more
wiley   +1 more source