Related Experiment Video
Updated: Apr 1, 2026
08:53
Application of Two-spotted Spider Mite Tetranychus urticae for Plant-pest Interaction Studies
Published on: July 4, 2014
18.4K
Intraguild interactions among three spider mite predators: predation preference and effects on juvenile development
Experimental & Applied Acarology
|October 15, 2015
Summary
Intraguild predation (IGP) among predatory mites is weak, with no species eliminating others when pest spider mites are present. This suggests multiple predators can be used safely in biological control.
Area of Science:
- Ecology
- Biological Control
- Predator-Prey Interactions
Background:
- Intraguild predation (IGP) can impact biological control efficacy when multiple predators are used.
- Understanding predator behavior and nutritional value of intraguild prey is crucial for evaluating IGP effects.
Purpose of the Study:
- To investigate the predation preferences and nutritional impacts of intraguild prey on three predatory mite species.
- To assess the influence of extraguild prey (spider mites) on intraguild predation dynamics.
Main Methods:
- Observed predation behavior of Neoseiulus californicus, Typhlodromus bagdasarjani, and Phytoseius plumifer females.
- Assessed juvenile development and oviposition when fed intraguild prey.
- Compared predation rates with and without the presence of Tetranychus urticae (spider mites).
Main Results:
- Predation rates varied by IG prey species in the absence of extraguild prey.
- All predatory mites consumed significantly more extraguild prey (spider mites) than intraguild prey.
- Intraguild prey did not negatively affect juvenile or adult survival probabilities.
Conclusions:
- Intraguild predation is a weak interaction among these three predatory mite species.
- The presence of spider mites reduces the impact of intraguild predation.
- These findings suggest that these predatory mites can coexist and be used together in biological control programs.
Related Concept Videos
02:39Predator-Prey Interactions
22.3K
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.
22.3K
01:28Microbial Interactions: Predation
37
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...
37
00:58Symbiosis
38.6K
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...
38.6K
02:40Epiphytes, Parasites, and Carnivores
17.2K
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...
17.2K
01:26Microbial Interactions: Cooperation
37
Microbial cooperation involves beneficial interactions in which different species work together for individual or mutual advantage. These interactions can profoundly influence ecological dynamics and evolutionary processes, and they are essential to many pathogenic and symbiotic relationships.Nematode–Bacteria CooperationA striking example is the relationship between the Gram-negative bacterium Xenorhabdus nematophila and the parasitic nematode Steinernema carpocapsae. Juvenile nematodes...
37
01:22Microbial Interactions: Parasitism
52
Parasitism is a form of microbial interaction in which parasitic microbes exploit a host organism for nutrients and shelter, often at the host's expense. Unlike mutualistic relationships, where both organisms benefit, parasitism benefits only the parasite and harms the host.Classification of ParasitesMicrobial parasites are broadly classified based on their location relative to the host.Ectoparasites remain on the host’s surface, such as the skin or outer tissues, drawing nutrients...
52