Osteoglossomorpha Cretaceous 

 i continued) 



Gvmnarchidae 



Neotype 

 Jurassic 

 Gymnarchi dae 



Gymnarchus nUoacus 

 Caudal skeleton 

 Skull 



Infraorbital bones 

 Anatomy 



Descriptive evolution 

 Electric organs 

 Ultras trucrure 

 Electroreception organs 

 Histology 



Biochemistry 

 Ultrastructure 



Function 

 Innervation 

 Ultrastructure 

 Zoogeoeraohy 

 Fish communities 

 Digenea 



Incidence of infection 

 Parasite life history 

 Host parasite interactions 

 Nematoda 



Incidence of infection 

 Parasite life history- 

 Population density 

 Habitat preference 

 Fishery statistics 

 Hiodontidae 

 Key 



GUI arch teeth 

 Anatomy 



Descriptive evolution 

 Zoogeography 

 Distribution 

 Hiodon alosoides 

 Relationships 

 Synonymy 



Nitrogen metabolism 

 Enzymology 



Experimental analysis 

 Coloration 

 Skull 



Infraorbital bones 

 Anatomy 



Descriptive evolution 

 Visceral skeletal muscles 

 Lateral line pores and canals 

 Liver 



Nitrogen metabolism 

 Biochemistry 

 Rate of growth 

 Age length relationship 

 Weight length relationship 

 Vertical distribution 

 Distribution 



Population changes 

 Population density 

 Reproductive season 

 Gut contents 



History of ichthyology- 

 Lewis and Clark Expedition 

 Hiodon tergisus 



Relationships 



Fecundity 



Rate of growth 



Weight length relationship 



Distribution 



Reproductive season 



Gut contents 

 Monnyridae 

 Relationships 

 Meristics 

 Skull 



Infraorbital bones 

 Anatomy 



Descriptive evolution 

 Electroreception organs 



Innervation 

 Sexually dimorphic fins 

 Rate of growth 

 Sex ratio 

 Zoogeography 



Fish communities 

 Vertical distribution 



: : - : 6 : 



■ : - - - : 



804108 



■ '" - 

 808023 



804080 

 804080 

 804080 



804080 

 804080 

 808023 

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 807263 



804352 



807964 

 807160 

 804352 



807160 

 806509 



804584 

 803753 

 805022 



807160 

 807160 

 807160 



804028 

 806635 

 808464 

 806635 

 808464 

 805647 

 806635 

 807358 

 808464 

 808464 

 806635 

 805022 

 806635 



806509 



807160 

 806635 



806635 

 806635 

 806635 

 806635 

 806635 



807160 



806095 

 803915 

 803915 

 803915 

 805461 

 807160 

 808023 

 808972 



Host and parasite phytogeny 

 Parasite systematics 

 Cestoda 



Incidence of infection 

 Intensity of infection 

 Parasite life history 



Incidence of infection 

 Parasite life history 



Population changes 

 Population density 



C.-^;:_r '- ;. ±-is 

 Activity patterns 



H:i:- = 



Reproductive season 



Feeding 



Habitat preference 



Aggressive behavior 



Territoriality 



Migrations 



Host specificity 



Africa 



S Z.Z3.7. 



Boulengeromynis knoepSleri 

 Relationships 

 Redefinition 

 Scales 

 Axial skeleton 



Anatomy 

 Pelvic girdle 

 Anatomy 

 Visceral skeleton 



Anatomy 

 Skull 



Anatomy 

 Otoliths 

 Campylomormyrus 



Redefinition 

 Genyomyrus donnyi 

 Relationships 

 Redefinition 

 Scales 

 Axial skeleton 



Anatomy 

 Visceral skeleton 



Anatomy 

 Skull 



Anatomy 

 Otoliths 

 Gnathonemus 

 Redefinition 

 Meristics 

 Morphometries 



Allometry 

 Barbels 



Change with age 

 Caudal skeleton 



Anatomy 

 Pectoral girdle 



Anatomy 

 Pelvic girdle 



Anatomy 

 Visceral skeleton 



Anatomy 

 Skull 



Anatomy 

 Electric organs 

 Ultrastructure 

 Otoliths 



Anatomy 

 Tuberous receptors 

 Nerve transection 

 Experimental analysis 

 CNS integration 



Nervous electrophysiology 

 Electroreception organs 

 Nervous electrophysiology 

 Gnathonemus brevjeaudatus 



Synonymy 

 Gnathonemus elepbas 



Caudal skeleton 

 Gnathonemus kutuensis 

 Visceral skeleton 

 Anatomy 



804080 

 804080 

 804080 



804080 

 804080 

 804180 

 804328 

 805573 

 808971 

 807193 

 808023 



808972 



803915 

 808972 

 808019 

 808023 

 808972 

 808972 

 803915 

 804080 



804080 



807108 

 807108 

 807108 



807108 



807108 



807108 



807108 

 807108 



807108 

 807108 

 807108 



807108 



807 108 



■■----" 

 805457 



805457 



805457 



■ -f- ; - 

 805457 

 805457 



805457 

 806991 

 805457 



803946 



806098 

 806098 

 • 55" 



807160 



■ f-if" 



386 



