Chemical Cues That Indicate Risk of Predation
نویسنده
چکیده
6.
منابع مشابه
Behaviouralresponsesby Red - Backedsalamanders to Conspecific and Heterospecific Cues
Chemical cues released from injured prey are thought to indicate the proximity of a predator or predation event, and therefore, an area of elevated predation risk. Prey often avoid chemical cues released from injured heterospecics, but there is little evidence to determine whether this is due to homologous cues among phylogeneticallyrelated species, or avoidance of injured syntopic species tha...
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Settlement is a key process for meroplanktonic organisms as it determines distribution of adult populations. Starvation and predation are two of the main mortality causes during this period; therefore, settlement tends to be optimized in microhabitats with high food availability and low predator density. Furthermore, brachyuran megalopae actively select favorable habitats for settlement, via ch...
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Recent evidence suggests that environmental conditions may affect whether fishes do or do not respond to the presence of chemical alarm cues in water. We present a simple model which suggests that the combination of risk of predation and information from other sources will determine when fishes should react to these chemical cues. We tested this model with a laboratory experiment which manipula...
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Aquatic organisms often detect predators via water-borne chemical cues, and respond by showing reduced activity. Prey responses may be correlated with the concentration of predation cues, which would result in graded antipredator behavioral responses that adjust potentially costly behavioral changes to levels that are commensurate with the risk of predation. Larvae of the predatory mosquito Tox...
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To effectively balance investment in predator defenses versus other traits, organisms must accurately assess predation risk. Chemical cues caused by predation events are indicators of risk for prey in a wide variety of systems, but the relationship between how prey perceive risk in relation to the amount of prey consumed by predators is poorly understood. While per capita predation rate is ofte...
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