Cottus ahuticus 



List of types 



University of Oslo 



Distribution 



Population 

 Cottus bairdi 



Distribution 



Population structure 



Surface volume relationship 

 Fish control agents 



Antimycin-A 



Lethal environmental limit 

 Experimental analysis 

 Cottus beldingi 

 Ovarian cycles 

 Fecundity 

 Testicular cycles 

 Age length relationship 

 Vertical distribution 



Orcadian rhythms 



Feeding 

 Seasonal abundance 

 Gut contents 



Seasonal changes 



Change 



ith 



Habitat preference 

 Cottus bogio 



Distribution 

 Cottus bulosus 



Mastigophora 



Parasite life history 

 Cottus carolinae 



General structure and behavior 



Distribution 



Activity patterns 



Habitat preference 



Cottus cognatus 



Coloration 



Distribution within habitat 



Vertical distribution 

 Seasonal changes 



Gut contents 



Habitat preference 

 Temperature 

 Cottus ferrugineus 



Invalidation 

 Cottus gobio 



Relationships 



Identifying characters 



Synonymy 



Subspecies 



Popular names 



General structure and behavior 



Meristics 



Rays and spines 



Vertebrae 

 Oral teeth 

 Pyloric caeca 

 Morphometries 

 Surface volume relationship 

 Gills 



Regulatory respiratory meel 

 Pigment cells 



Experimental analysis 

 Color change 



Experimental analysis 

 Temperature 

 Light 

 Lateral line pores and canals 

 Anatomy 

 Function 

 Gills 



Anatomy 

 Histology 

 Function 

 Chloride cells 

 Histology 



Ultrastructure 

 Pseudobranch 



Anatomy 

 Arterial system 

 Gills 



Anatomy 

 Biochemical blood constituents 

 Gut 



Anatomy 

 Histology 



806655 

 807018 

 806617 



805610 



807358 

 807435 



808721 

 808721 

 808721 

 808721 



808737 



804103 

 804103 



806821 



805264 



806257 

 804053 

 805264 

 805264 



806257 

 806282 

 807942 



804895 

 805251 



805251 



805733 

 805251 



Oral teeth 

 Pigments 

 Histology 

 Development 

 Sexually dimorphic body form 

 Rate of growth 

 Population genetics 

 Polymorphism 

 Hemoglobin 

 Geographic variation 

 Meristics 

 Armor 



Lateral line pores and canals 

 Zoogeography 



Distribution within habitat 



Change with age 



Water 



Geographic 

 Mastigophora 



As parasite 

 Digenea 



Distribution of infection 

 Cestoda 



Distribution of infection 

 Nematoda 



Distribution of infection 

 Distribution 



Population density 



Interspecific competition 



Age class distribution 

 Activity patterns 



Temperature 



Experimental analysis 



Light 



Experimental analysis 

 Gut contents 



Change with age 



Seasonal changes 

 Preying on small prey 

 Habitat preference 



Habitat destruction 

 Dams and barriers 



Effect on fish 

 Water movement 

 Marking and tagging 



Experimental analysis 

 Otolith age study 

 Cottus gobio X 



Cottus poecilopus X 



Natural hybridization 



Artificial hybridization 

 Cottus hangiongensis 

 Distribution 

 Habitat preference 

 Cottus hilgendorfi 

 Gills 



Surface volume relationship 

 Anatomy 

 Function 

 Distribution 

 Cottus kessleri 

 Copepoda 



Parasite systematics 

 Cottus koshewnikowi 



Invalidation 



Cottus HUjeborgi 



Invalidation 



List of types 



University of Oslo 

 Cottus mono 

 Permeability 



Ion and water relationships 

 Experimental analysis 

 Salinity 



Effect on fish 



Ion and water relationships 

 Water ingestion 



803612 

 803612 

 804053 



803678 



805264 

 805264 

 805199 

 805264 

 805459 



803678 



806904 



806904 



806904 

 803735 



804053 

 806282 

 806415 

 806569 

 805961 

 806033 

 807222 

 805199 

 805459 

 805961 



803932 



805961 

 805961 



805601 

 804053 

 804216 

 805199 

 805459 

 807222 

 806844 



803597 

 805199 



803597 



805372 

 805372 

 807194 



807531 

 805264 

 806655 

 806655 



Cottidae 



(continued) 



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