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Related Concept Videos

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...
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Microbial Interactions: Predation

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...
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Antibody Structure

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Antibodies, also known as immunoglobulins (Ig), are essential players of the adaptive immune system. These antigen-binding proteins are produced by B cells and make up 20 percent of the total blood plasma by weight. In mammals, antibodies fall into five different classes, which each elicits a different biological response upon antigen binding.
The Y-Shaped Structure of Antibodies Consists of Four Polypeptide Chains
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Antibody Actions01:26

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Antibodies, or immunoglobulins, are critical players in the immune system's arsenal against invading pathogens. Produced by B cells and plasma cells, their primary role is to detect and bind to specific antigens, molecules found on the surface of pathogens like bacteria or viruses. Beyond antigen recognition, antibodies perform several vital functions that contribute to immune defense.
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Malaria pathogenesis in humans reflects a delicate interplay between parasite biology and host response. Clinical illness reflects a host’s immune response to the parasite’s asexual replication cycle, which is often asymptomatic in individuals with partial immunity. From the parasite's perspective, transmission between mosquito and human with minimal host pathology is evolutionarily advantageous. Among the six Plasmodium species infecting humans, P. falciparum and P. vivax dominate in global...
Cross-reactivity00:42

Cross-reactivity

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Application of Two-spotted Spider Mite Tetranychus urticae for Plant-pest Interaction Studies
08:53

Application of Two-spotted Spider Mite Tetranychus urticae for Plant-pest Interaction Studies

Published on: July 4, 2014

Spider mite web mediates anti-predator behaviour.

Felipe Lemos1, Renato Almeida Sarmento, Angelo Pallini

  • 1Department of Animal Biology, Section Entomology, Federal University of Viçosa, Viçosa, MG, Brazil.

Experimental & Applied Acarology
|March 2, 2010
PubMed
Summary
This summary is machine-generated.

Red spider mites (Tetranychus evansi) do not build denser webs when predators are near. Instead, females lay eggs in webs, protecting them from predation by Phytoseiulus longipes.

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Last Updated: Jun 15, 2026

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08:53

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10:25

Extraction of Venom and Venom Gland Microdissections from Spiders for Proteomic and Transcriptomic Analyses

Published on: November 3, 2014

Area of Science:

  • Ecology
  • Zoology
  • Entomology

Background:

  • Herbivores face high mortality from predation, driving natural selection for anti-predator strategies.
  • Spider mites utilize various defenses, including patch avoidance and web construction.
  • The anti-predator role of spider mite webs is less understood than behavioral avoidance.

Purpose of the Study:

  • To investigate the effect of predator cues on web density in Tetranychus evansi.
  • To determine if T. evansi alters oviposition behavior in response to predator cues.
  • To assess the impact of altered oviposition on offspring survival from predation.

Main Methods:

  • Exposing female Tetranychus evansi to predator cues (Phytoseiulus longipes).
  • Measuring web density and egg-laying locations (on leaf surface vs. suspended in web).
  • Comparing predation rates on eggs laid in different locations.

Main Results:

  • T. evansi females did not increase web density in response to predator cues.
  • Females laid significantly more eggs suspended within the web structure.
  • Eggs suspended in the web experienced lower predation by P. longipes compared to those on the leaf surface.

Conclusions:

  • T. evansi alters oviposition behavior, not web density, as an anti-predator strategy.
  • Suspending eggs within the web effectively reduces offspring mortality from predation.
  • This behavioral plasticity in oviposition is a key mechanism for offspring protection.