Results 11 to 20 of about 8,024 (192)

Effect of the introgression of Atlantic brown trout, Salmo trutta, into Adriatic trout, Salmo farioides in a stream at the drainage area of the Adriatic Sea basin of Montenegro [PDF]

open access: yesActa Ichthyologica et Piscatoria, 2018
Background. The diversity of wild trout stocks in Montenegro is compromised by insufficiently controlled stocking. Adriatic and Mediterranean areas show a high degree of endemism of the salmonid species, with numerous native Salmo taxa described.
D. Škraba Jurlina   +7 more
doaj   +3 more sources

Behavioural thermoregulation in cold‐water freshwater fish: Innate resilience to climate warming?

open access: yesFish and Fisheries, Volume 24, Issue 1, Page 187-195, January 2023., 2023
Abstract Behavioural thermoregulation enables ectotherms to access habitats providing conditions within their temperature optima, especially in periods of extreme thermal conditions, through adjustments to their behaviours that provide a “whole‐body” response to temperature changes.
Fatima Amat‐Trigo   +3 more
wiley   +1 more source

Daily changes of the heart and respiratory rates of the bulitrout (Salmo trutta trutta L.) [PDF]

open access: yesActa Ichthyologica et Piscatoria, 1975
The frequency of the heart stimulations and respirations of the bulltrout (Salmo trutta trutta L.) was examined from the point of view of the daily rate in the aquarium conditions.
R. Węgrzynowicz   +5 more
doaj   +3 more sources

Economic impact of resident and nonresident marine anglers to the local economy in Mecklenburg‐Western Pomerania, Germany

open access: yesFisheries Management and Ecology, EarlyView., 2023
Abstract Recreational fisheries catches are increasingly considered in the assessment and management of mixed recreational‐commercial marine fisheries, while the contribution of recreational fisheries to the economy is often overlooked. Using a telephone diary survey targeting marine recreational anglers in Germany, we estimated the number of anglers ...
Harry V. Strehlow   +6 more
wiley   +1 more source

Scale‐dependence of fish habitat associations in a North American river system

open access: yesFreshwater Biology, Volume 68, Issue 1, Page 12-24, January 2023., 2023
Abstract Determining the appropriate measurement scale to assess habitat variables is critical for ecologists assessing biological or ecological conditions. Depth, velocity, substrate, woody debris and other fish cover variables occur on both reach and microhabitat scales, and fish habitat associations with these variables may be scale‐dependent.
David H. Keller
wiley   +1 more source

What acoustic telemetry can and cannot tell us about fish biology

open access: yesJournal of Fish Biology, EarlyView., 2023
Abstract Acoustic telemetry (AT) has become ubiquitous in aquatic monitoring and fish biology, conservation, and management. Since the early use of active ultrasonic tracking that required researchers to follow at a distance their species of interest, the field has diversified considerably, with exciting advances in both hydrophone and transmitter ...
David M. P. Jacoby, Adam T. Piper
wiley   +1 more source

Frequency of occurrence of acanthocephalans (Acanthocephala) and cestodes (Cestoda) in alimentary tracts of the sea trout smolts (Salmo trutta m. trutta) grown in the drainage area of the river Rega and their impact on fish condition [PDF]

open access: yesActa Ichthyologica et Piscatoria, 1996
The present paper demonstrates results of analysis of 247 alimentary tracts of sea trout smolts (Salmo trutta m. trutta) grown in the drainage area of the river Rega (Pomerania).
Z. Chełkowski, B. Chełkowska
doaj   +3 more sources

Carotenoid content in eggs of Atlantic salmon (Salmo salar L.) and brown trout (Salmo trutta L.) entering Polish rivers for spawning or reared in fresh water [PDF]

open access: yesActa Ichthyologica et Piscatoria, 2002
The authors investigated the carotenoids content in yellow, yellow-orange, and orange eggs of salmon (Salmo salar L.) and brown trout (Salmo trutta L.) entering Polish rivers for spawning or reared in fresh water.
B. Czeczuga   +2 more
doaj   +3 more sources

Zootechnical Brown Trout (Salmo trutta L. 1758) Ovarian Fluid Fails to Upregulate the Swimming Performances of Native Mediterranean Brown Trout (Salmo cettii Rafinesque, 1810) Sperm in the Biferno River

open access: yesFishes, 2023
In external fertilizer fish, ovarian fluid (OF) seems to play a key role in fertilization success, improving spermatozoa swimming performance. These OF/sperm interaction mechanisms are frequently species-specific and/or population-specific and could ...
Giusy Rusco   +7 more
doaj   +1 more source

Studies of mitochondrial genomics in Salmo trutta fario

open access: yesMitochondrial DNA. Part B. Resources, 2017
Salmo trutta fario population is an important species for aquaculture and livestock industry. Moreover, these species were used for studies on the molecular markers.
Abolhasan Rezaei, Sheyda Akhshabi
doaj   +1 more source

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