597/I.E

Experimental Ecology of the Feeding of Fishes
BY

V. S. IVLEV

Contents

   <!--[endif]-->THE CONTENT AND TASKS OF ANIMAL TROPIC ECOLOGY

   <!--[endif]-->METHODS AND MATERIAL

     <!--[endif]-->INTENSITY OF FEEDING

Effects of the degree of concentration of food items on the size of the fishes’ ration

The effect on the ration of the fishes of the way the food material is distributed

The way the size of the ration depends on the joint action of the concentration of food material and the patchiness of its distribution

The way the size of the predator ration depends on the average concentration and on the degree of patchiness of consumption of benthos by fishes 

   <!--[endif]-->SELECTIVE FEEDING

Quantitative indices of electivity - Experimental technique and material  

Electivity, Predilection, and accessibility - Electivity and the degree of satiation of Predators  - Electivity and population density of food animals

Electivity and the density of the predator population

The influence exerted on the phenomenon of electivity by the duration of feeding on a specific food

Influence of the size of predators and prey on process of electivity

The influence of the mobility of the prey on the process of electivity

Electivity and the presence of shelter - Constitutional protection of prey and electivity

Electivity as a function of the character of food distribution

Electivity and selection

     <!--[endif]-->INDIRECT FOOD RELATIONS OF FISHES  

Indirect  food relations and the struggle for existence

Contemporary position of the problem of indirect food relations

      Quantitative indices of indirect food relations

Forms of indirect food relations - Homogeneous competition with monophagy

Homogeneous competition with polyphagy  - Heterogeneous competition with monophagy

      Heterogeneous competition with polyphagy -  General observations

    <!--[endif]-->THE ECOLOGY OF STARVATION

Basic features of starvation as an ecological factor

Starvation and environmental physiochemical factor

Starvation and biological factors- Summary 

    <!--[endif]-->CONCLUSION   

Prep./ Asmaa Ahmed   
REV ./ Khaled Shrief

Manage./Huda Hosny