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

Predator-Prey Interactions02:39

Predator-Prey Interactions

17.2K
Predators consume prey for energy. Predators that acquire prey and prey that avoid predation both increase their chances of survival and reproduction (i.e., fitness). Routine predator-prey interactions elicit mutual adaptations that improve predator offenses, such as claws, teeth, and speed, as well as prey defenses, including crypsis, aposematism, and mimicry. Thus, predator-prey interactions resemble an evolutionary arms race.
17.2K
Microbial Interactions: Predation01:28

Microbial Interactions: Predation

65
Microbial predation refers to the process by which one microorganism kills and consumes another to obtain nutrients and energy. It encompasses both bacterial and protozoan predators. This interaction plays a crucial role in shaping microbial communities and regulating nutrient cycling.Bacterial Predators: Epibiotic vs. EndobioticBacterial predators are classified based on their mode of attack as either epibiotic or endobiotic. Epibiotic predators, such as Vampirococcus, attach to the surface of...
65
Symbiosis00:58

Symbiosis

27.8K
Symbiotic relationships are long-term, close interactions between individuals of different species that affect the distribution and abundance of those species. When a relationship is beneficial to both species, this is called mutualism. When the relationship is beneficial to one species but neither beneficial nor harmful to the other species, this is called commensalism. When one organism is harmed to benefit another, the relationship is known as parasitism. These types of relationships often...
27.8K
Hybrid Zones02:29

Hybrid Zones

16.3K
Hybrid zones are narrow regions where two closely related species interact, mate, and produce hybrids. Relative to either parent species, hybrids may possess distinct phenotypic or genetic differences that impact their survival and reproductive success. The genetic variances introduced by hybridization influence species diversity and speciation processes within the hybrid zone.
16.3K
Frequency-dependent Selection01:21

Frequency-dependent Selection

20.1K
When the fitness of a trait is influenced by how common it is (i.e., its frequency) relative to different traits within a population, this is referred to as frequency-dependent selection. Frequency-dependent selection may occur between species or within a single species. This type of selection can either be positive—with more common phenotypes having higher fitness—or negative, with rarer phenotypes conferring increased fitness.
20.1K
Types of Selection01:46

Types of Selection

37.5K
Natural selection influences the frequencies of particular alleles and phenotypes within populations in several different ways. Primarily, natural selection can be directional, stabilizing, or disruptive. Directional selection favors one extreme trait and shifts the population towards that phenotype while selecting against individuals displaying alternate traits. Stabilizing selection favors an intermediate trait with a narrow range of variation. Deviation from the optimal phenotype towards an...
37.5K

You might also read

Related Articles

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

Sort by
Same author

Us against them: oxytocin response to competition in a small-scale human society.

Proceedings. Biological sciences·2026
Same author

Nutritional adaptation in the marine to freshwater establishment process - how do diet and genotype shape phenotype?

The Journal of experimental biology·2026
Same author

Oxytocin varies across the life course in a sex-specific way in a human subsistence population.

Proceedings of the National Academy of Sciences of the United States of America·2025
Same author

Estimating (Non)Linear Selection on Reaction Norms: A General Framework for Labile Traits.

Ecology and evolution·2025
Same author

Indirect genetic effects among neighbors promote cooperation and accelerate adaptation in a small-scale human society.

Science advances·2025
Same author

The community context of trophic cascades.

The Journal of animal ecology·2025
Same journal

Museum genomics links MC1R alleles to adaptive winter coat color polymorphism in the long-tailed weasel.

Evolution; international journal of organic evolution·2026
Same journal

Repeated evolution of iridescence and hindwing tails is associated with morphometric flight proxies in skipper butterflies.

Evolution; international journal of organic evolution·2026
Same journal

Temperature-dependent competition predicts contrasting outcomes of adjacent secondary contact zones in darters (Percidae:Etheostoma).

Evolution; international journal of organic evolution·2026
Same journal

Sex allocation of hermaphrodites in metapopulations with frequent population extinction and recolonization.

Evolution; international journal of organic evolution·2026
Same journal

The phylogenetic signal of extinction through the rise and fall of early vertebrates: field of bullets or clustered strike?

Evolution; international journal of organic evolution·2026
Same journal

Reproductive value and primary sex ratios under facultative asexual reproduction by both sexes in age-structured populations.

Evolution; international journal of organic evolution·2026
See all related articles
  1. Home
  3. Multivariate Morphological Divergence Due To Intraguild Predation.
  1. Home
  3. Multivariate Morphological Divergence Due To Intraguild Predation.

Related Experiment Video

Dissection and Flat-mounting of the Threespine Stickleback Branchial Skeleton
08:02

Dissection and Flat-mounting of the Threespine Stickleback Branchial Skeleton

Published on: May 7, 2016

9.4K

Multivariate morphological divergence due to intraguild predation.

Jonathan Fassora1, Jordan S Martin1, Blake Matthews1

  • 1Swiss Federal Institute for Aquatic Science and Technology (Eawag), Kastanienbaum, Switzerland.

Evolution; International Journal of Organic Evolution
|April 28, 2026

View abstract on PubMed

Summary
This summary is machine-generated.

Intraguild predation drives threespine stickleback evolution. Sticklebacks adapt defensively with longer spines and armor, and shift foraging traits when sharing resources with Arctic charr.

Keywords:
intraguild predationmorphologymultivariate analysisphenotypic covariancespecies interactionsstickleback

More Related Videos

Collecting Marine Gnathiid Isopod Fish Parasites with Light Traps
06:43

Collecting Marine Gnathiid Isopod Fish Parasites with Light Traps

Published on: September 25, 2023

2.1K
Manipulation of Color Patterns in Jumping Spiders for Use in Behavioral Experiments
09:03

Manipulation of Color Patterns in Jumping Spiders for Use in Behavioral Experiments

Published on: May 21, 2019

11.3K

Related Experiment Videos

Dissection and Flat-mounting of the Threespine Stickleback Branchial Skeleton
08:02

Dissection and Flat-mounting of the Threespine Stickleback Branchial Skeleton

Published on: May 7, 2016

9.4K
Collecting Marine Gnathiid Isopod Fish Parasites with Light Traps
06:43

Collecting Marine Gnathiid Isopod Fish Parasites with Light Traps

Published on: September 25, 2023

2.1K
Manipulation of Color Patterns in Jumping Spiders for Use in Behavioral Experiments
09:03

Manipulation of Color Patterns in Jumping Spiders for Use in Behavioral Experiments

Published on: May 21, 2019

11.3K

Area of Science:

  • Evolutionary ecology
  • Ecosystem dynamics
  • Behavioral ecology

Background:

  • Intraguild predation, where species sharing resources prey on each other, is a significant ecological interaction.
  • This interaction can act as a selective pressure, influencing the evolution of species' traits.
  • Threespine stickleback (Gasterosteus aculeatus) in Southern Greenland lakes face intraguild predation from Arctic charr (Salvelinus alpinus).

Purpose of the Study:

  • To investigate the impact of intraguild predation by Arctic charr on the multivariate morphological variation of threespine stickleback populations.
  • To test for adaptive evolutionary responses in defensive and foraging traits of stickleback in the presence of charr.
  • To explore how intraguild predation influences phenotypic variation and integration within stickleback populations.

Main Methods:

  • Analysis of multivariate morphological variation across 36 threespine stickleback populations (18 sympatric with charr, 18 allopatric).
  • Comparison of defensive (spines, armor, lateral plates) and foraging morphology between stickleback populations with and without Arctic charr.
  • Examination of patterns of phenotypic (co)variance, variation, dimensionality, and integration.

Main Results:

  • Stickleback populations sympatric with charr showed adaptations in defensive morphology, including longer spines and larger structural armor, but not more lateral plates.
  • Foraging morphology in stickleback shifted towards littoral-adapted traits in the presence of charr.
  • Populations with charr exhibited reduced phenotypic variation and dimensionality, and stronger trait integration, suggesting selection for efficiency.

Conclusions:

  • Intraguild predation by Arctic charr significantly influences the multivariate evolution of threespine stickleback morphology.
  • Findings support the niche shift hypothesis, demonstrating evolutionary consequences of intraguild predation on phenotypes.
  • The study highlights the importance of a multivariate approach in understanding the complex evolutionary outcomes of ecological interactions.