Gasterosteidae 

 (continued) 



Seasonal changes 

 Intensity of infection 



Ultrastructure 

 Parasite life history 

 Host specificity 

 Parasite systematics 

 Digenea 



Incidence of infection 



Change with age 



Seasonal changes 



Intensity of infection 



Host parasite interactions 

 Host specificity 

 Parasite systematics 

 Cestoda 



Distribution of infection 

 Incidence of infection 



Change with age 



Seasonal changes 



Intensity of infection 



Parasite life history 

 Host parasite interactions 



Parasite life history 



Ultrastructure 



Experimental analysis 



Host specificity 

 Host specificity 



Experimental analysis 



Host parasite interactions 

 Host parasite interactions 

 Nematoda 



Incidence of infection 



Intensity of infection 

 Host specificity 

 Acanthocephala 



Distribution of infection 

 Incidence of infection 



Change with age 



Seasonal changes 



Intensity of infection 



Host parasite interactions 

 Host specificity 

 Hinidinea 



Parasite systematics 



Host specificity 

 Copepoda 



Incidence of infection 



Intensity of infection 

 Host specificity 

 Amphibia 



As food for fish 



Egg 

 Distribution 



Larva 



Populations 



tnfraspecific variation 



Armor 



Polymorphism 



Armor 



Life span 



Population structure 



Population changes 



Young 

 Population density 



Interspecific competition 



Age class distribution 



Food chains 

 Reproductive season 



Seasonal abundance 

 Hydrostatics 

 Hydrodynamics 

 Gut contents 



Change with age 



208 



804757 



804760 

 805979 

 805965 

 809053 

 804752 

 807495 

 805965 

 804123 

 806261 



806904 



805979 

 805965 

 804496 

 807495 

 805965 

 804496 

 804960 



804758 

 807386 

 803978 

 804123 

 804458 

 804458 

 806261 



806904 



805979 

 805965 

 804496 

 804496 

 804123 



804488 

 807495 

 804123 



804439 

 804407 

 806282 

 806415 

 806635 

 807018 

 807097 

 807198 

 808471 

 808982 



807362 

 807362 

 806617 



805085 

 805961 

 805976 

 806033 

 806851 

 807156 

 808659 

 806851 

 807256 

 805961 

 807257 

 807275 

 806635 

 807008 

 805868 

 807979 

 807979 

 805022 

 806635 

 806851 

 807256 



Seasonal changes 

 Habitat preference 



Avoidance responses 

 Geographic variation 



Experimental analysis 



Young 

 Aggressive behavior 

 Estrogens 

 Androgens 

 Effects of isolation 



Experimental analysis 

 Visual signals 



Experimental analysis 

 Behavioral habituation 



Experimental analysis 



Nest construction 

 Effects of isolation 

 Experimental analysis 

 Instrumental conditioning 



Chemical senses 

 Fixed action patterns 

 Aggressive behavior 



Experimental analysis 

 Reproduction 



Experimental analysis 

 Ich disease 

 Microsporidiosis 

 Habitat pollution 



Organic pollutants 

 Kraft mill effluents 

 Salinity 



Lethal environmental lim 

 Fish kill 

 Endrin 



Insecticide pollutants 

 Nabam 



Insecticide pollutants 

 Trawling 



Effect on fish 



Shallow water observation 

 Metabolite collection 

 Urine 

 Gasterosteus wachurus 



Invalidation 

 Gasterosteus wheatlandi 

 Seasonal sexual coloration 

 Isolating mechanisms 



ntal analysis 



systematics 



Experim 

 Monogene 



Parasite 

 Copepoda 



Incidence of infection 

 Distribution 



Habitat preference 



Territoriality 



Courtship 



Mating 



Nest construction 



Parental care of eggs 



Egg stealing 

 Pungitius 

 Relationships 

 Axial skeletal muscles 



Comparative enzymology 

 Biochemistry 

 Cestoda 



Distribution ( 

 Acanthocephala 



Distribution c 

 Pungitius kaibarac 

 Relationships 

 Armor 



Anatomy 



Development 

 Pungitius platygaster 

 Synonymy 

 Subspecies 

 Popular names 

 Geographic variation 



M 



of infection 



i 



of infection 



Ecotypes 

 Distribution 



Pungitius pungitius 

 Relationships 

 Synonymy 

 Subspecies 



805961 

 804098 

 806659 



809079 

 809079 



806146 

 808956 



806146 

 808412 



804573 

 804123 

 804123 



807381 

 807381 



804979 



803593 



807572 



807473 



807473 



804757 



804488 

 807367 

 807430 

 807473 

 807473 

 807473 

 807473 

 807473 



807473 



806181 



806181 

 806904 

 806904 

 806231 



806231 



804859 

 804859 

 806282 



804859 

 804859 

 804859 

 806282 

 806569 



805074 

 804859 

 804859 

 808135 



