Research any topic before you write.

Find related topics. | Discover entities. | See connections. | Build a topical map.

Schreckstoff

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

Use the mouse wheel or two fingers (on touchscreens) to zoom in and out of the map.

Research this topic

Explore the main themes, entities and connections around Schreckstoff. Start with the topic map, then use the sections below for research and deeper semantic analysis.

Explore this topic

Start with a few of the strongest sections from the source topic. These are research directions, not a list of keywords you must use.

Hypotheses for the evolution of schreckstoff

25 related topics

Background

7 related topics

Schreckstoff in ostariophysans

7 related topics

Ecological considerations

3 related topics

Topics to explore

Browse the full topic structure. Each item opens a new analysis centered on that subject.

Overview

Background

Schreckstoff in ostariophysans

Hypotheses for the evolution of schreckstoff

Ecological considerations

Advanced semantic analysis

Deeper signals for content research, entity SEO and topical coverage. The plain-language headings explain what each technical view is useful for.

Map overview Semantic statistics

Schreckstoff

Nodes58
Edges57
Triples217
Avg. degree1.97
Density0.034483
Components1

How this topic connects Entity context

See the strongest relationship patterns around the current topic before diving into the raw triples.

Schreckstoff

Top relations

related to Sources · 151
Schreckstoff → Adrian, Alarm, Alemadi, Ambient UV-B, American Naturalist, American Scientist, Amphibian, Amsterdam, An, Animal Behaviour, Anthony, Argentini, Atema, Attracting, Behavioral, Behavioral Ecology, Belden, Biological, Blakley, Blaustein
related to Hypotheses for the evolution of schreckstoff · 10
Schreckstoff → Another, Direct, For, It, Selection, Support, Testing, The, This, UVB
related to Schreckstoff as a possible defense against pathogens, parasites and UVB radiation · 10
Schreckstoff → Additionally, Cadmium, Evidence, Furthermore, In, Saprolegnia, The, UV, UVB, Xiphophorus
related to Kin selection hypothesis · 9
Schreckstoff → First, Hamilton’s, If, In, One, Ostariophysi, Second, To, Under
related to Predator attractant hypothesis · 9
Schreckstoff → According, Additionally, Colymbetes, Esox, First, Second, The, Third, This
related to Schreckstoff in ostariophysans · 9
Schreckstoff → Culaea, For, H3NO, Like, One, Production, The, This, Whether
related to Ecological considerations · 8
Schreckstoff → Additionally, Environmental, First, If, In, The, This, UVB
related to background · 4
Schreckstoff → About, Chemical, One, Ostariophysi
is a · 2
Schreckstoff → breakdown product of mucus and club cells, mixture

Important terminology Word statistics

Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.

Important terminology

alarm chemical hypothesis minnows kin predator predators predation fathead evolution parasites radiation response signal selection fishes production substance first prey

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Schreckstoffis amixture0.90text
Schreckstoffis abreakdown product of mucus and club cells0.90text
pathogensinstance ofrecent evidence suggests schreckstoff evolved as a defense against environmental stressors0.80text
parasitesinstance ofrecent evidence suggests schreckstoff evolved as a defense against environmental stressors0.80text
and UVB radiationinstance ofrecent evidence suggests schreckstoff evolved as a defense against environmental stressors0.80text
that it was later co-opted by predatorsinstance ofrecent evidence suggests schreckstoff evolved as a defense against environmental stressors0.80text
prey as a chemical signalinstance ofrecent evidence suggests schreckstoff evolved as a defense against environmental stressors0.80text
Schreckstoffrelated to backgroundChemical0.60section
Schreckstoffrelated to backgroundOne0.60section
Schreckstoffrelated to backgroundOstariophysi0.60section
Schreckstoffrelated to backgroundAbout0.60section
Schreckstoffrelated to Ecological considerationsThe0.60section

Related concept clusters Concept neighborhoods

These clusters group vocabulary that occurs around closely connected concepts in the source material.

    Connections between topic areas Semantic bridges

    Bridges can reveal useful research angles that are easy to miss in a flat list of related terms.

    Min side: 3
    For writers, content strategists, SEOs, marketers and creators — from quick topic research to advanced semantic analysis.