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Related Concept Videos

Migration00:53

Migration

Migration is long-range, seasonal movement from one region or habitat to another. This common strategy, carried out by many different organisms around the world, is an adaptive response that typically corresponds to changes in an organism’s environment, like resource availability or climate. Migrations can involve huge groups of thousands of animals as well as single individuals traveling alone and can range from thousands of kilometers to just a few hundred meters.
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...
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...
Pollination and Flower Structure02:40

Pollination and Flower Structure

Flowers are the reproductive, seed-producing structures of angiosperms. Typically, flowers consist of sepals, petals, stamens, and carpels. Sepals and petals are the vegetative flower organs. Stamens and carpels are the reproductive organs.
Epiphytes, Parasites, and Carnivores02:40

Epiphytes, Parasites, and Carnivores

Plants often form mutualistic relationships with soil-dwelling fungi or bacteria to enhance their roots’ nutrient uptake ability. Root-colonizing fungi (e.g., mycorrhizae) increase a plant’s root surface area, which promotes nutrient absorption. While root-colonizing, nitrogen-fixing bacteria (e.g., rhizobia) convert atmospheric nitrogen (N2) into ammonia (NH3), making nitrogen available to plants for various biological functions. For example, nitrogen is essential for the biosynthesis of the...
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.

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Related Experiment Video

Updated: Jun 2, 2026

Dissection and Grading of Ovarian Development in Wild-Type Female Insects
04:41

Dissection and Grading of Ovarian Development in Wild-Type Female Insects

Published on: July 14, 2023

Causes behind insect folivory patterns in latitudinal gradients.

Christer Björkman, Asa Berggren, Helena Bylund

    The Journal of Ecology
    |April 12, 2011
    PubMed
    Summary

    Insect herbivory decreases with rising temperatures, but predator-prey dynamics may also influence this pattern. Warmer climates might see increased predator pressure, affecting insect folivory. Further research integrating plant and insect ecology is recommended.

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    Last Updated: Jun 2, 2026

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    Published on: July 14, 2023

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    Quantifying Corticolous Arthropods Using Sticky Traps
    05:28

    Quantifying Corticolous Arthropods Using Sticky Traps

    Published on: January 19, 2020

    Area of Science:

    • Ecology
    • Entomology
    • Climate Change Research

    Background:

    • Recent studies show insect folivory decreases with increasing temperature along latitudinal gradients.
    • Existing research suggests plant-herbivore interactions may be more significant in cooler climates.
    • The role of predator-herbivore interactions in relation to climate gradients requires further investigation.

    Purpose of the Study:

    • To propose an alternative explanation for observed patterns of insect folivory along climatic gradients.
    • To highlight the potential impact of temperature on predator-herbivore interactions.
    • To encourage interdisciplinary collaboration between plant ecologists and entomologists.

    Main Methods:

    • The study reviews existing literature on insect folivory and latitudinal gradients.
    • It analyzes the potential influence of temperature on insect herbivores and their natural enemies.
    • The authors present a theoretical argument based on ecological interactions.

    Main Results:

    • Insect folivory shows a negative trend with increasing temperature for certain insect groups.
    • Insect natural enemies may exhibit a more positive response to warming than insect herbivores.
    • Increased predator pressure in warmer climates could partially explain observed herbivory patterns.

    Conclusions:

    • Predator-prey interactions offer a complementary explanation for latitudinal patterns in insect folivory.
    • Climate change significantly impacts plant-herbivore and predator-herbivore dynamics.
    • Integrating plant and insect ecology is crucial for advancing research on herbivory in changing climates.