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

Types of Selection01:46

Types of Selection

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...
Frequency-dependent Selection01:21

Frequency-dependent Selection

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.Positive Frequency-Dependent SelectionIn positive...
Osmoregulation in Insects01:47

Osmoregulation in Insects

Malpighian tubules are specialized structures found in the digestive systems of many arthropods, including most insects, that handle excretion and osmoregulation. The tubules are typically arranged in pairs and have a convoluted structure that increases their surface area.
Predator-Prey Interactions02:39

Predator-Prey Interactions

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.Although predation is commonly associated with carnivory, for...
Background and Environment Affect Phenotype02:27

Background and Environment Affect Phenotype

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...
Derivatives: Problem Solving01:26

Derivatives: Problem Solving

Temperature-Dependent Growth of Brook TroutThe growth of brook trout is closely influenced by water temperature. Experimental data demonstrate how trout weight changes over a 24-day period in response to varying water temperatures. At lower temperatures, such as 15.5 degrees Celsius, brook trout show significant weight gain. However, as the temperature increases, the amount of weight gained steadily decreases. At the highest temperature measured, 24.4 degrees Celsius, trout experience a net...

You might also read

Related Articles

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

Sort by
Same author

Medical facemask waste alters detritus decomposition and fungal communities in a freshwater pond.

Scientific reports·2026
Same author

Prof Stephen P. Long, FRS (1950-2025).

Global change biology·2025
Same author

Positive Feedback on Climate Warming by Stream Microbial Decomposers Indicated by a Global Space-For-Time Substitution Study.

Global change biology·2025
Same author

Microplastics in freshwaters: Comparing effects of particle properties and an invertebrate consumer on microbial communities and ecosystem functions.

Ecotoxicology and environmental safety·2025
Same author

How to make land use policy decisions: Integrating science and economics to deliver connected climate, biodiversity, and food objectives.

Proceedings of the National Academy of Sciences of the United States of America·2024
Same author

Important Crop Pollinators Respond Less Negatively to Anthropogenic Land Use Than Other Animals.

Ecology and evolution·2024

Related Experiment Video

Updated: Jul 11, 2026

Use of Chironomidae (Diptera) Surface-Floating Pupal Exuviae as a Rapid Bioassessment Protocol for Water Bodies
08:27

Use of Chironomidae (Diptera) Surface-Floating Pupal Exuviae as a Rapid Bioassessment Protocol for Water Bodies

Published on: July 24, 2015

Environmental variation and the predator-specific responses of tropical stream insects: effects of temperature and

Brendan G McKie1, Richard G Pearson

  • 1School of Tropical Biology and the Rainforest Cooperative Research Centre, James Cook University, Townsville, Queensland, Australia. brendan.mckie@emg.umu.se

Oecologia
|June 9, 2006
PubMed
Summary

Predator type significantly impacts prey survival and development in tropical Australian streams. Despite temperature variations, prey species show predator-specific responses, indicating predation

More Related Videos

Field-Based Thermal Physiology Assay: Cold Shock Recovery under Ambient Conditions
07:54

Field-Based Thermal Physiology Assay: Cold Shock Recovery under Ambient Conditions

Published on: March 9, 2021

Determining Temperature Preference of Mosquitoes and Other Ectotherms
05:31

Determining Temperature Preference of Mosquitoes and Other Ectotherms

Published on: September 28, 2022

Related Experiment Videos

Last Updated: Jul 11, 2026

Use of Chironomidae (Diptera) Surface-Floating Pupal Exuviae as a Rapid Bioassessment Protocol for Water Bodies
08:27

Use of Chironomidae (Diptera) Surface-Floating Pupal Exuviae as a Rapid Bioassessment Protocol for Water Bodies

Published on: July 24, 2015

Field-Based Thermal Physiology Assay: Cold Shock Recovery under Ambient Conditions
07:54

Field-Based Thermal Physiology Assay: Cold Shock Recovery under Ambient Conditions

Published on: March 9, 2021

Determining Temperature Preference of Mosquitoes and Other Ectotherms
05:31

Determining Temperature Preference of Mosquitoes and Other Ectotherms

Published on: September 28, 2022

Area of Science:

  • Ecology
  • Aquatic Entomology
  • Predator-Prey Dynamics

Background:

  • Predation threat varies with predator species and environment.
  • Tropical Australian streams face floods, potentially reducing predation.
  • Invertebrate faunas exhibit broad environmental tolerances.

Purpose of the Study:

  • Investigate predator impacts on insect survival and development.
  • Assess responses of two tubicolous Chironomidae species to different predators.
  • Examine temperature effects on predator-prey interactions.

Main Methods:

  • Laboratory microcosm experiments.
  • Assessed survival and development of Echinocladius martini and Polypedilum australotropicus.
  • Tested impacts of Australopelopia prionoptera and a Polycentropodidae predator.
  • Investigated temperature effects on Australopelopia impacts.

Main Results:

  • Polycentropodid predator increased larval duration and reduced adult size/longevity in E. martini.
  • Both predators reduced P. australotropicus survivorship; Australopelopia affected development.
  • Predation impacts showed little variation with temperature.

Conclusions:

  • Predator-specific prey responses suggest predation is a significant selective force.
  • Flooding may limit predation's role in community structure at larger scales.
  • Broad physiological tolerances limit environmental modification of predator-prey interactions.