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

What are Populations and Communities?00:30

What are Populations and Communities?

34.1K
Overview
34.1K
What is Population Genetics?01:25

What is Population Genetics?

58.5K
A population is composed of members of the same species that simultaneously live and interact in the same area. When individuals in a population breed, they pass down their genes to their offspring. Many of these genes are polymorphic, meaning that they occur in multiple variants. Such variations of a gene are referred to as alleles. The collective set of all the alleles within a population is known as the gene pool.
58.5K
Analysis of Population Pharmacokinetic Data01:12

Analysis of Population Pharmacokinetic Data

307
Analysis of population pharmacokinetic data involves studying the behavior of drugs within diverse populations to understand their pharmacokinetic parameters. Traditional pharmacokinetic methods typically involve collecting samples from a few individuals and estimating these parameters. While these methods are commonly used, they have limitations in capturing the variability in drug response among individuals or heterogeneous populations. Population pharmacokinetics is employed to address these...
307
Conservation of Declining Populations02:07

Conservation of Declining Populations

9.7K
Conservation of declining population focuses on ways of detecting, diagnosing, and halting a population decline. The approach uses methods to prevent populations from going extinct.
9.7K
Life Histories01:29

Life Histories

18.1K
Overview
18.1K
Conservation of Small Populations02:04

Conservation of Small Populations

13.2K
Small population sizes put a species at extreme risk of extinction due to a lack of variation, and a consequent decrease in adaptability. This weakens the chances of survival under pressures such as climate change, competition from other species, or new diseases. Large populations are more likely to survive pressures such as these, as such populations are more likely to harbor individuals that have genetic variants that are adaptive under new stresses. Small populations are much less...
13.2K

You might also read

Related Articles

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

Sort by
Same author

Evolutionary inference reveals global natural histories and predicted pathways of antimicrobial resistance in Klebsiella pneumoniae.

PLoS biology·2026
Same author

Genetic traits of IncK2 plasmids and the <i>Escherichia coli</i> host underlying the association to the chicken gut.

Microbial genomics·2026
Same author

A One Health study of <i>Klebsiella pneumoniae</i> species complex plasmids shows a highly diverse and ecologically adaptable plasmidome.

Microbial genomics·2026
Same author

Convergence and global molecular epidemiology of Klebsiella pneumoniae plasmids harbouring the iuc3 virulence locus: a population genomic analysis.

The Lancet. Microbe·2026
Same author

Governing antimicrobial resistance in Norwegian livestock farming to 2050: a participatory strategy development approach.

Frontiers in veterinary science·2025
Same author

Monensin phase-out in Norwegian turkey production decreases <i>Bifidobacterium</i> spp. abundance while enhancing microbial diversity.

Microbial genomics·2025

Related Experiment Video

Updated: Jul 27, 2025

Predicting the Effectiveness of Population Replacement Strategy Using Mathematical Modeling
20:36

Predicting the Effectiveness of Population Replacement Strategy Using Mathematical Modeling

Published on: July 4, 2007

8.8K

Population dynamics and characteristics of

Håkon Kaspersen1, Anne Margrete Urdahl1, Fiona Valerie Franklin-Alming2

  • 1Section for Food Safety and Animal Health, Norwegian Veterinary Institute, Ås, Norway.

Frontiers in Microbiology
|June 5, 2023
PubMed
Summary

Klebsiella pneumoniae persists in poultry flocks, with some sequence types (STs) remaining stable over time. Persistence is not linked to antimicrobial resistance (AMR) genes, but ST4710 shows transmission potential in turkeys.

Keywords:
KlebsiellaST4710broilerpoultrysequence typesturkey

More Related Videos

Following the Dynamics of Structural Variants in Experimentally Evolved Populations
04:52

Following the Dynamics of Structural Variants in Experimentally Evolved Populations

Published on: February 3, 2023

1.0K
Discrimination and Characterization of Heterocellular Populations Using Quantitative Imaging Techniques
09:48

Discrimination and Characterization of Heterocellular Populations Using Quantitative Imaging Techniques

Published on: June 30, 2017

7.5K

Related Experiment Videos

Last Updated: Jul 27, 2025

Predicting the Effectiveness of Population Replacement Strategy Using Mathematical Modeling
20:36

Predicting the Effectiveness of Population Replacement Strategy Using Mathematical Modeling

Published on: July 4, 2007

8.8K
Following the Dynamics of Structural Variants in Experimentally Evolved Populations
04:52

Following the Dynamics of Structural Variants in Experimentally Evolved Populations

Published on: February 3, 2023

1.0K
Discrimination and Characterization of Heterocellular Populations Using Quantitative Imaging Techniques
09:48

Discrimination and Characterization of Heterocellular Populations Using Quantitative Imaging Techniques

Published on: June 30, 2017

7.5K

Area of Science:

  • Veterinary Microbiology
  • Bacterial Pathogenesis
  • Antimicrobial Resistance

Background:

  • Klebsiella pneumoniae is a significant opportunistic pathogen, primarily studied in human infections.
  • Knowledge gaps exist regarding K. pneumoniae niches beyond human hosts, particularly in animal populations.
  • Previous studies characterized K. pneumoniae in Norwegian poultry, detailing population structure, sequence types (STs), and virulence/antimicrobial resistance (AMR) genes.

Purpose of the Study:

  • To investigate the temporal dynamics of K. pneumoniae populations in poultry.
  • To assess changes in antimicrobial resistance (AMR) and virulence factors over time.
  • To focus on the persistence of specific sequence types (STs) within broiler and turkey flocks.

Main Methods:

  • Analysis of 391 poultry flocks (271 broiler, 120 turkey) sampled in 2020.
  • Comparison of K. pneumoniae occurrence rates between broiler and turkey flocks.
  • Identification and tracking of major and persistent STs, alongside analysis of AMR and virulence genes.

Main Results:

  • K. pneumoniae was more prevalent in turkey flocks (62.5%) than broiler flocks (24.0%).
  • Several STs, including ST35, ST37, ST590, and ST17, demonstrated persistence across sampling years and host species.
  • Persistence of STs was generally not associated with AMR genes, except for ST590.
  • A hypervirulent ST4710 strain in turkeys lost a salmochelin locus over time, potentially due to reductive evolution.
  • Closely related ST4710 isolates from healthy and diseased turkeys highlighted its transmission and infectious potential.

Conclusions:

  • K. pneumoniae exhibits persistence in poultry populations, with specific STs maintaining a presence over time.
  • The persistence of K. pneumoniae STs in poultry is not primarily driven by antimicrobial resistance.
  • The ST4710 sequence type possesses significant transmission and infectious potential within turkey populations, as evidenced by plasmid dynamics and clinical isolates.