Water pollutants 

 Kraft mill effluents 

 Effect on fish 

 Mucus 

 Breathing 

 Heavy metal pollutants 

 Fish kill 

 Reservoirs 

 Fish conservation 

 Fishing methods 

 Angling 

 Fish cultural methodology 



Artificial incubation 



Artificial rearing environments 

 Artificial feeds and feeding 



Gastric digestion 

 Intestinal digestion 

 Rectal digestion 

 Fish control agents 

 Antimycin 



Poison content 

 Biochemistry 

 Antimycin-A 



Lethal environmental limits 

 Experimental analysis 



Naphthol 



Effect on fish 



Lethal environmental limil 

 Anesthetics 



Methylpentynol 

 Effect on fish 



Experimental analysis 

 Lethal environmental limits 

 Experimental analysis 

 Quinaldine 

 Effect on fish 



Lethal environmental limil 

 Brachymystax 



Relationships 

 Brachymystax lenok 

 Skull 



Infraorbital bones 

 Anatomy 



Descriptive evolution 

 Lateral line pores and canals 

 Gills 



Histology 

 Function 

 Coregonus 

 Relationships 

 Synonymy 

 Key 

 Meristics 



Axial skeleton 



Anatomy 

 Pectoral girdle 

 Visceral skeleton 



Anatomy 

 Skull 



Anatomy 

 Morphi 

 Bile 



Biochemistry 



Descriptivt 



Ovarian cycles 



Adaptation 



Geograph: 

 Zoogeography 

 Distribution w 



Verl 



al distribution 



Population changes 

 Seasonal abundance 

 Fisheries improvement 

 Introduction for fishery 



Dams and barriers 

 Effect on fish 

 Reproduction 

 Habitat destruction 

 Habitat eutrophication 

 Effect on fish 



Population changes 

 Coregoi 



Gas bladder 

 Function 



805986 

 805989 

 807044 

 806466 

 806469 

 806466 

 806467 

 806617 



806447 



806353 

 806353 

 806352 

 806353 

 807641 



806308 

 807641 



807641 

 308496 



807746 

 806844 

 807200 



Water pressure 

 .Effect on fish 



Gas secretion and absorp 

 Coregonus albula 

 Subspecies 

 Meristics 

 Morphometries 

 Protein content 

 Amino acids 

 Biochemistry 

 Geographic variation 

 Ecotypes 

 Cestoda 



Incidence of infection 

 Parasite life history 

 Fishery dynamics 

 Coregonus alpenae 



Reduction of range by man 

 Coregonus anedii 

 Identifying characters 

 Meristics 

 Morphometries 

 Nitrogen metabolism 



Enzymology 

 Skull 



Infraorbital bones 

 Anatomy 



Descriptive evolution 

 Lateral line pores and canals 

 Liver 



Nitrogen metabolism 

 Biochemistry 

 Rate of growth 

 Distribution within habitat 



Population changes 

 Mass mortalities 

 Feeding captive fish 



Fry 



Plankton 

 Coregonus autumnalis 

 Meristics 



Change with age 

 Morphometries 



Change with age 

 Gills 



Histology 

 Function 

 Ecotypes 



Population change^. 

 Natural mortality 

 Fisheries improvement 

 Coregonus clupeaformis 

 Coloration 



Hermaphroditic gonads 

 Rate of growth 

 Distribution within habitat 



Vertical distribution 

 Population changes 

 Activity patterns 



Orcadian rhythms 

 Gut contents 

 Coregonus clupeoides 

 Fecundity 

 Vertical distribution 



Circadian rhythms 



Seasonal changes 

 Reproductive season 

 Migrations 

 Coregonus hoyi 

 "Vertical distribution 



Seasonal changes 

 Habitat preference 



Temperature 

 Coregonus lavaretus 

 Relationships 

 Subspecies 



Myodome 



Anatomy 

 Eye muscles 



Anatomy 

 Gas bladder 



Function 

 Heart 



Allometry 

 Serum proteins 



lnfraspecific variation 

 Ecotypes 



807641 

 807641 

 807641 



808222 

 807641 

 807641 



807465 

 807465 

 807465 



806879 

 807465 

 803873 

 805726 



807695 

 S07695 



806447 

 807695 

 807747 

 807747 

 807747 



805022 

 807508 

 805022 



803672 



803672 

 803672 

 803672 

 803672 



808650 

 808650 



806353 

 807641 



804638 



804638 



805093 



807321 



807655 



Salmonidae 

 (continued) 



Brachymystax 



to 



Coregonus 



417 



