Home > Search Results: keywords:"kořist"
Search:
Search Tips :: Advanced Search
Search collections:
Sort by: Display results: Output format:
National Repository of Grey Literature 13 records found  previous11 - 13  jump to record: Search took 0.00 seconds. 
Semiaquatic bugs as predators and prey and their use in natural history teaching
 JANDA, Václav
The aim of this thesis is to create an overview of scientific findings about the prey and the predators of the representatives of infraorder Gerromorpha, their feeding habits and defence strategies against predators. Gerromorphans are adapted for life on the surface of various water bodies ranging from puddles to open ocean. Majority of water striders feed on insect fallen upon water surface, hatching larvae of aquatic insect or micro-crustacean. Gerromorphans locate their prey by sight and by sensory detection of ripples at water surface caused by prey. Gathering in schools turned out to be an efficient defence strategy against predators. Some species have compound eyes with specialized ommatidia which enable them to see prey on the surface as well as predator under surface. A proposal of the use of Gerromorpha in natural history teaching is part of this thesis. Gerromorphans are convenient for teaching of natural history thanks to the possibility of observation of piercing and sucking mouthparts and various food relations such as predation, cannibalism or kleptobiotic relation. Undemanding rearing of gerromorphans enables easy realization of experiments and observations under school conditions.
Detailed record
Práce s koňmi metodou horsemanship
 Stodolová, Petra
Detailed record
Influence of visibility in water column on predation pressure in predatory aquatic insects
 PODHRADSKÁ, Eliška
The influence of abiotic factors on predation behaviour in predatory aquatic animals is reviewed. The most important factors are turbidity, light intensity and complexity of the environment. These abiotic factors are often combined with biotic factors. The second important part of thesis is the description of functional responses and influence of changes of visibility on individual components of predation behaviour. The review is complemented by laboratory experiments on two selected species of aquatic insects.
Detailed record

National Repository of Grey Literature : 13 records found   previous11 - 13  jump to record:
Interested in being notified about new results for this query?
Subscribe to the RSS feed.
Digital Repository :: Search :: Submit :: Personalize :: Help
Powered by Invenio v1.1.2
Maintained by admin.invenio@techlib.cz
This site is also available in the following languages:
Česky  English