Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Gene Flow02:39

Gene Flow

35.0K
Gene flow is the transfer of genes among populations, resulting from either the dispersal of gametes or from the migration of individuals.
35.0K
Speciation Rates01:07

Speciation Rates

21.2K
Overview
21.2K
Fixed Action Patterns01:06

Fixed Action Patterns

15.9K
A fixed action pattern (FAP) is a specific, hard-wired sequence of behaviors that occurs in response to an external stimulus, called a sign stimulus. The behavior is “fixed” because it is essentially unchangeable—proceeding similarly across individuals of a species every time it occurs.
15.9K
Osmoregulation in Fishes02:32

Osmoregulation in Fishes

49.5K
When cells are placed in a hypotonic (low-salt) fluid, they can swell and burst. Meanwhile, cells in a hypertonic solution—with a higher salt concentration—can shrivel and die. How do fish cells avoid these gruesome fates in hypotonic freshwater or hypertonic seawater environments?
49.5K
Background and Environment Affect Phenotype02:27

Background and Environment Affect Phenotype

6.5K
Although the genetic makeup of an organism plays a major role in determining the phenotype, there are also several environmental factors, such as temperature, oxygen availability, presence of mutagens, that can alter an organism’s phenotype.
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...
6.5K
Mutation, Gene Flow, and Genetic Drift01:09

Mutation, Gene Flow, and Genetic Drift

58.3K
In a population that is not at Hardy-Weinberg equilibrium, the frequency of alleles changes over time. Therefore, any deviations from the five conditions of Hardy-Weinberg equilibrium can alter the genetic variation of a given population. Conditions that change the genetic variability of a population include mutations, natural selection, non-random mating, gene flow, and genetic drift (small population size).
58.3K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Emigration of silver eels (Anguilla anguilla L.) from the Great Masurian Lakes complex in the southeastern Baltic region.

Scientific reports·2026
Same author

The influence of magnetic fields on the early ontogeny of the rainbow cichlid Herotilapia multispinosa (Günther, 1867).

Zoological letters·2026
Same author

Dietary transition from pelleted feed to live fry of two brown trout (Salmo trutta) morphs, reared for reintroduction.

Scientific reports·2025
Same author

Cardiac function in Vimba vimba embryos under electromagnetic exposure at hatchery-relevant intensities.

PloS one·2025
Same author

Shifting genetic structure of Polish sea trout populations: a contemporary perspective.

Journal of applied genetics·2025
Same author

Effect of Magnetic Fields on the Development of the Larvae of the Jaguar Cichlid (<i>Parachromis managuensis</i>, Günther, 1867) and the Green Terror (<i>Andinoacara rivulatus</i>, Günther, 1860).

Animals : an open access journal from MDPI·2025

Related Experiment Video

Updated: Jun 22, 2025

Effectiveness of the Air Stripping in Two Salmonid Fish, Rainbow Trout Oncorhynchus Mykiss and Brown Trout Salmo Trutta Morpha fario
03:50

Effectiveness of the Air Stripping in Two Salmonid Fish, Rainbow Trout Oncorhynchus Mykiss and Brown Trout Salmo Trutta Morpha fario

Published on: September 16, 2018

7.8K

Brown trout in Oder estuary tributaries: genetic structure, stocking, and admixture.

Rafał Bernaś1, Anna Wąs-Barcz2, Waldemar Święcki3

  • 1Department of Migratory Fish, National Inland Fisheries Research Institute, Rutki 49, 83‑330, Żukowo, Poland. r.bernas@infish.com.pl.

Journal of Applied Genetics
|July 3, 2024
PubMed
Summary

Genetic analysis of Salmo trutta populations in Polish rivers reveals stocking practices significantly impact genetic structure. Most sampled fish originated from stocking, with adult trout showing closer ties to northern brown trout lineages.

Keywords:
Salmo truttaBiodiversity conservationParentage analysisResident brown troutSea troutStock composition

More Related Videos

Basic Methods for the Study of Reproductive Ecology of Fish in Aquaria
07:25

Basic Methods for the Study of Reproductive Ecology of Fish in Aquaria

Published on: July 20, 2017

11.6K
Laboratory Estimation of Net Trophic Transfer Efficiencies of PCB Congeners to Lake Trout Salvelinus namaycush from Its Prey
12:24

Laboratory Estimation of Net Trophic Transfer Efficiencies of PCB Congeners to Lake Trout Salvelinus namaycush from Its Prey

Published on: August 29, 2014

11.0K

Related Experiment Videos

Last Updated: Jun 22, 2025

Effectiveness of the Air Stripping in Two Salmonid Fish, Rainbow Trout Oncorhynchus Mykiss and Brown Trout Salmo Trutta Morpha fario
03:50

Effectiveness of the Air Stripping in Two Salmonid Fish, Rainbow Trout Oncorhynchus Mykiss and Brown Trout Salmo Trutta Morpha fario

Published on: September 16, 2018

7.8K
Basic Methods for the Study of Reproductive Ecology of Fish in Aquaria
07:25

Basic Methods for the Study of Reproductive Ecology of Fish in Aquaria

Published on: July 20, 2017

11.6K
Laboratory Estimation of Net Trophic Transfer Efficiencies of PCB Congeners to Lake Trout Salvelinus namaycush from Its Prey
12:24

Laboratory Estimation of Net Trophic Transfer Efficiencies of PCB Congeners to Lake Trout Salvelinus namaycush from Its Prey

Published on: August 29, 2014

11.0K

Area of Science:

  • Ichthyology
  • Population Genetics
  • Conservation Biology

Background:

  • Rivers Ina, Gowienica, and Wołczenica, tributaries of the Oder estuary, host Salmo trutta L (brown trout), including both sea trout and resident forms.
  • These populations are traditionally supplemented through stocking with sea trout from the Rega River basin or resident brown trout from various sources.

Purpose of the Study:

  • To investigate the genetic structure, diversity, and origin of Salmo trutta populations in these key Polish rivers.
  • To compare the genetic profiles of stocked fish with existing breeding stocks used in Poland.

Main Methods:

  • Analysis of 13 microsatellite loci to assess genetic structure and diversity.
  • Evaluation of relatedness among fish stocked in the same year.
  • Comparison of obtained genotypes with established breeding stocks.

Main Results:

  • Significant genetic differentiation was observed between adult trout from Ina and Rega Rivers and those sampled via electrofishing.
  • High levels of kinship were detected, with stocked fish dominating wild juveniles, especially in smaller tributaries.
  • A clear separation in the genetic origin of stocked individuals was evident, with adult trout from Ina and Rega exhibiting closer genetic affinity to northern brown trout lineages.

Conclusions:

  • Stocking practices heavily influence the genetic makeup of Salmo trutta populations in the studied rivers.
  • The genetic distinctiveness of adult trout suggests potential issues with the current stocking strategies.
  • Findings provide critical data for effective management and biodiversity conservation of Polish Salmo trutta populations.