Predator-prey-interactions

Guides

Aphis varians
Aphis varians is an aphid species described by Patch in 1914. Research has demonstrated that this species employs aggregation as an effective anti-predator strategy, with individuals benefiting from reduced per capita predation risk when grouped together. The species serves as prey for the convergent lady beetle Hippodamia convergens, with which it has been studied in predator-prey interaction research.
aggregation anti-predator-behavior predator-prey-interactions Hippodamia-convergens dilution-effect congregative-movement
Bosmina
water flea
Bosmina is a genus of small cladoceran crustaceans commonly known as water fleas. Members are distinguished from the related genus Bosminopsis by having antennae that are separated at their bases rather than fused. Bosmina species are filter feeders that consume algae and protozoans approximately 1–3 μm in size, using a dual feeding mechanism involving mesh-like setules on the second and third legs for filtering while the first leg grasps particles. The genus exhibits notable morphological plasticity, particularly in posterior mucrones and anterior antennules, which vary in response to predation pressure. Some Bosmina species have become invasive outside their native ranges, posing threats to aquatic ecosystems.
cladocera zooplankton freshwater filter-feeder morphological-plasticity invasive-species water-quality-indicator parthenogenesis resting-eggs predator-prey-interactions
Chaoborus flavicans
phantom midge
Chaoborus flavicans is a phantom midge (Diptera: Chaoboridae) whose larval stages are important aquatic predators in lake ecosystems. Recent taxonomic revision indicates it represents a complex of at least four species, with C. flavicans sensu stricto primarily inhabiting lakes across the Holarctic region. Larvae are notable for their diel vertical migration behavior, which changes ontogenetically and serves as a predator avoidance mechanism against fish predation.
phantom-midge diel-vertical-migration predator-prey-interactions zooplankton-predator Holarctic lacustrine phenotypic-plasticity aquatic-insect
Chlorochroa uhleri
Uhler's Stink Bug
Chlorochroa uhleri, commonly known as Uhler's stink bug, is a species of stink bug in the family Pentatomidae. It is distributed across Central America and North America. The species belongs to the genus Chlorochroa, which includes several stink bug species characterized by their green coloration. Limited specific biological information is available for this species in the provided sources.
stink-bug Pentatomidae North-America Central-America Chlorochroa Hemiptera predator-prey-interactions
Holopedium gibberum
Holopedium gibberum is a planktonic cladoceran distinguished by a large gelatinous mantle that encloses the body. The species exhibits pronounced phenotypic plasticity in mantle size as an inducible defense against invertebrate predators, particularly Chaoborus larvae. Populations show strong sensitivity to fish predation pressure, with distribution patterns reflecting avoidance of high-predation environments. The species demonstrates seasonal population dynamics tied to food availability and predation regimes, with reproductive investment varying in response to environmental stressors.
zooplankton freshwater cladoceran inducible-defense phenotypic-plasticity gelatinous-mantle predator-prey-interactions bioindicator
Lygaeinae
Lygaeinae is a subfamily of ground bugs (Hemiptera: Lygaeidae) commonly known as milkweed bugs. Members are characterized by ancestral adaptations for sequestering cardenolides—potent cardiac glycosides from host plants—using resistant Na+/K+-ATPases. These coevolved traits enable chemical defense against predators and have facilitated host shifts to cardenolide-producing plants across multiple families. The subfamily exhibits diverse feeding strategies from dietary specialists to generalists, with sequestration mediating predator-prey interactions with vertebrates and invertebrates.
chemical-defense cardenolide-sequestration aposematic-coloration Na+/K+-ATPase-resistance host-plant-specialization predator-prey-interactions milkweed-bugs
Olcella
frit flies
Olcella is a genus of small frit flies in the family Chloropidae, subfamily Oscinellinae. The genus contains approximately 11 described species with highest diversity in South America, particularly Argentina. Several Nearctic species have been documented engaging in kleptoparasitism, feeding on prey fluids from insects captured by predators such as spiders, assassin bugs, and mantids. Species in this genus possess a long geniculate (elbowed) proboscis that facilitates feeding on exposed fluids without disturbing the predator.
kleptoparasitism chemical-attraction New-World Chloropidae Oscinellinae frit-flies predator-prey-interactions South-America Nearctic genus
Palaemon vulgaris
Marsh Grass Shrimp, Common American Prawn, Common Grass Shrimp, Marsh Shrimp
Palaemon vulgaris is a small, transparent caridean shrimp native to the western Atlantic Ocean. Adults reach less than 5 cm in length and display distinctive orange pigmentation on the eyestalks. The species has been studied for its specialized swimming mechanics, employing metachronal beating of pleopods and drag-reducing mechanisms during locomotion. It occupies coastal and estuarine habitats from Cape Cod Bay to the Gulf of Mexico.
crustacean shrimp western-Atlantic transparent swimming-mechanics metachronal-swimming drag-reduction estuarine Palaemonidae Caridea Decapoda Malacostraca Arthropoda Palaemon Palaemonetes-vulgaris Say-1818 Cape-Cod-Bay Gulf-of-Mexico eyestalk-pigmentation pleopod hydrodynamics appendage-flexibility particle-image-velocimetry locomotion marine-biology invertebrate-zoology aquatic-arthropod coastal-species marsh-shrimp grass-shrimp common-American-prawn common-grass-shrimp marsh-grass-shrimp small-crustacean translucent-body camouflage swimming-appendages pleopodal-swimming crustacean-locomotion biomechanics fluid-dynamics drag-reduction-mechanisms asymmetric-flexibility appendage-grouping return-stroke power-stroke wake-reduction thrust-generation profile-area-modulation phase-lag appendage-wave swimming-efficiency aquatic-maneuverability hydrodynamic-optimization caridean-shrimp palaemonid-shrimp marine-invertebrate estuarine-invertebrate Atlantic-coast North-American-shrimp western-Atlantic-shrimp coastal-marine-biology invertebrate-swimming crustacean-biomechanics decapod-locomotion malacostracan-swimming arthropod-hydrodynamics translucent-marine-animal small-decapod marine-transparency eyestalk-coloration orange-pigmentation eyestalk-morphology visual-system crustacean-vision transparent-animal crypsis camouflage-adaptation predator-avoidance visual-ecology marine-ecology coastal-ecology estuarine-ecology benthic-pelagic nektonic-shrimp planktonic-stages benthic-adult habitat-utilization ecosystem-component food-web prey-species foraging-behavior sensory-biology mechanoreception chemoreception aquatic-sensory-systems neurobiology motor-control swimming-coordination appendage-coordination rhythmic-movement neuromuscular-control biological-fluid-mechanics low-Reynolds-number-swimming viscous-swimming intermediate-Reynolds-number unsteady-flows vortex-dynamics wake-structure thrust-production propulsive-efficiency energy-economy locomotor-performance evolutionary-biomechanics functional-morphology comparative-physiology experimental-biology laboratory-studies field-observations natural-history taxonomic-history nomenclatural-change Palaemonetes-to-Palaemon genus-revision systematics phylogenetics molecular-data morphological-data integrated-taxonomy species-delimitation cryptic-species morphological-similarity genetic-differentiation population-structure biogeography dispersal larval-transport ocean-currents habitat-connectivity marine-biogeography provincialism endemism range-distribution latitudinal-gradient depth-distribution salinity-tolerance euryhaline stenohaline osmoregulation physiological-ecology environmental-tolerance temperature-tolerance thermal-biology seasonal-variation reproductive-seasonality breeding-biology mating-behavior reproductive-output fecundity egg-production larval-development developmental-biology life-history growth-rate longevity survivorship population-dynamics demography abundance density spatial-distribution temporal-distribution diel-patterns nocturnal-activity crepuscular-behavior foraging-ecology diet-composition trophic-level omnivory detritivory predation predator-prey-interactions anti-predator-behavior escape-responses startle-response autotomy defensive-behavior social-behavior aggregation schooling shoaling conspecific-attraction mating-systems sexual-selection mate-choice sperm-competition parental-investment care-of-young extended-parental-care reproductive-strategies iteroparity semelparity bet-hedging r-selection K-selection life-history-theory phenotypic-plasticity environmental-induction developmental-plasticity morphological-plasticity behavioral-plasticity physiological-plasticity acclimation adaptation local-adaptation genetic-adaptation evolutionary-adaptation natural-selection artificial-selection domestication conservation-biology population-viability threatened-species endangered-species habitat-loss pollution eutrophication hypoxia climate-change 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Pardosa milvina
shore spider
Pardosa milvina, commonly known as the shore spider, is a small wolf spider in the family Lycosidae. This species is notable for its well-studied behavioral ecology, particularly its antipredator responses to chemical cues from larger predators. Females provide extensive parental care, carrying egg sacs attached to their spinnerets for 12–30 days and subsequently carrying spiderlings for 3–24 days. The species has been extensively researched for its predator-prey interactions, silk-mediated communication, and parental investment strategies.
wolf-spider thin-legged-wolf-spider behavioral-ecology predator-prey-interactions chemical-communication parental-care riparian agricultural
Schizocosa ocreata
Brush-legged Wolf Spider, Brush-legged Split Wolf Spider
A medium-sized wolf spider native to eastern and central North America, distinguished by prominent sexual dimorphism. Males possess conspicuous dark bristle tufts on their forelegs used in courtship displays, while females lack these ornamentations. The species has become a model organism for studies of multimodal sexual communication, sexual selection, and predator-prey interactions involving visual signaling.
wolf-spider sexual-dimorphism multimodal-communication sexual-selection cursorial-predator model-organism predator-prey-interactions sexual-cannibalism
Scolopendra viridis
Florida Blue Centipede, Green Centipede
Scolopendra viridis is a medium-sized centipede in the family Scolopendridae, commonly known as the Florida Blue Centipede. It is one of 21 native North American species in the order Scolopendromorpha. The species has been documented as prey for the pygmy rattlesnake (Sistrurus miliarius), indicating its role in food webs of the southeastern United States.
Chilopoda Scolopendromorpha Scolopendridae Scolopendra centipede Florida southeastern-USA prey predator-prey-interactions
Stenolemus
Spider Assassin Bugs
Stenolemus is a genus of thread-legged assassin bugs (Emesinae) characterized by specialized araneophagy—predation on spiders. Species in this genus exhibit diverse hunting strategies, including web invasion and exploitation of spider draglines as prey location cues. The genus has a broad geographic distribution spanning Australia, Asia, and the Pacific region. Multiple species have been described, with S. bituberus and S. giraffa being the most extensively studied for their predatory behavior and life history.
araneophagy predator-prey-interactions chemical-ecology thread-legged-bugs web-invasion
Uroleucon ambrosiae
Brown Ambrosia Aphid
Uroleucon ambrosiae is a medium-sized aphid in the family Aphididae, commonly known as the brown ambrosia aphid. Native to North America, it exhibits geographic variation in host specificity, with eastern populations highly specialized on giant ragweed (Ambrosia trifida) while southwestern populations feed more broadly on Asteraceae plants. In Brazil, it has emerged as a significant pest of hydroponically-grown lettuce, where it vectors lettuce mosaic virus and promotes sooty mold through honeydew excretion. The species reproduces parthenogenetically during spring and summer, forming all-female colonies. Its populations serve as important prey for diverse natural enemies including flower fly larvae, lady beetles, lacewings, and parasitic wasps, making it a key component of biological control food webs in both natural and agricultural systems.
aphid pest parthenogenesis biological-control endosymbiont host-race hydroponic-agriculture Asteraceae vector predator-prey-interactions