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In 1938, the Austrian ethologist Karl von Frisch made his first report on the existence of the chemical alarm signal known as Schreckstoff (fright substance) in minnows. An alarm signal is a response produced by an individual, the "sender", reacting to a hazard that warns other animals, the receivers, of danger. This chemical alarm signal is released…
Hypotheses for the evolution of schreckstoff, Background & Schreckstoff in ostariophysans
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alarm chemical hypothesis minnows kin predator predators predation fathead evolution parasites radiation response signal selection fishes production substance first prey
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Schreckstoff | is a | mixture | 0.90 | text |
| Schreckstoff | is a | breakdown product of mucus and club cells | 0.90 | text |
| pathogens | instance of | recent evidence suggests schreckstoff evolved as a defense against environmental stressors | 0.80 | text |
| parasites | instance of | recent evidence suggests schreckstoff evolved as a defense against environmental stressors | 0.80 | text |
| and UVB radiation | instance of | recent evidence suggests schreckstoff evolved as a defense against environmental stressors | 0.80 | text |
| that it was later co-opted by predators | instance of | recent evidence suggests schreckstoff evolved as a defense against environmental stressors | 0.80 | text |
| prey as a chemical signal | instance of | recent evidence suggests schreckstoff evolved as a defense against environmental stressors | 0.80 | text |
| Schreckstoff | related to background | Chemical | 0.60 | section |
| Schreckstoff | related to background | One | 0.60 | section |
| Schreckstoff | related to background | Ostariophysi | 0.60 | section |
| Schreckstoff | related to background | About | 0.60 | section |
| Schreckstoff | related to Ecological considerations | The | 0.60 | section |
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