n:ilysi> 



Adrenal cortex 

 Ultrastructure 

 Biochemistry 

 Experimental analysis 

 Corpuscles of Stannius 

 Ultrastructure 

 Biochemistry 

 Experimental analysis 

 Gas bladder 



Use in systematics 

 Anatomy 

 Function 

 Liver 



Histology 



Experimental 

 Thyroid hormon 



Experimental analysis 

 Androgens 



Experimental analysis 

 Ovary 



Delayed fertilization 

 Ultrastructure 

 Function 

 Gerontological pathologies 

 Abnormality 

 Ovarian endocrine tissue 

 Histology 

 Biochemistry 

 Enzymology 

 Estrogens 



Effect on fish 

 Mating 

 Delayed fertilization 

 Viviparity 



Delayed fertilization 

 Ovarian cycles 

 Fecundity 

 Testis 



Experimental analysis 

 Testis 



Adenohypophysis 



Experimental analysis 

 Developmental analysis 

 Androgens 

 Androgens 



Experimental analysis 

 Change with age 

 Histology 

 Spermatogenesis 

 Adenohypophysis 



Experimental analysis 

 Radioactive tracers 

 Experimental analysis 

 Androgens 



Ovarian endocrine tissue 

 Enzymology 

 Testicular cycles 

 Sperm duct 

 Androgens 



Developmental analysis 



alysi 



nalysis 



Developmental i 



Androgens 

 Regeneration 



Experimental 

 Permanent sexual 

 Adenohypophysis 



Experimental analysis 

 Androgens 



Experimental analysis 



Developmental analysis 

 Sperm 

 Cytology 

 Ultrastructure 



Development 



Rate of growth 

 Inheritance 



Artificial selection 

 Regeneration 

 Anal fin 



Experimental analysis 

 Thyroid hormone 

 Androgens 

 Dietary requirements 

 Mendelian inheritance 

 Sex linked inheritance 

 Sex ratio 

 Acclimation 



Descriptive evolution 

 Inheritance 

 Coloration 

 Fins 



806867 

 806867 

 806867 



804749 

 806561 

 806561 



804162 



805195 



805174 

 804162 



806561 



804164 

 807063 



806867 

 805765 

 803913 



803831 



Mi 



Radioactivity 



Experimental analysis 

 Infraspecific variation 

 Sexual dimorphism 

 Temperature 

 Effect on fish 



Heart 

 Taste buds 



Developmental analysis 

 Light 



Effect on fish 



Survival in captivity 

 Radioactivity 

 Effect on fish 

 Axial skeleton 

 Vertebrae 

 Fecundity 

 Sex ch 

 Crossing 



nalysis 



Mutations 



Experimental 



Salinity 



Acclimation 

 Effect on fish 

 Acclimation 

 Glomerulus 

 Digenea 



Parasite life history 

 Experimental analysis 

 Expansion of range by mai 



Population changes 

 Lunar rhythms 

 Color vision 



Experimental analysis 

 Spatial orientation 



Experimental analysis 

 Feeding 



Adlibitum food capacity 

 Experimental analysis 

 Activity patterns 



Experimental analysis 

 Group behavior 



Orientation and locomotion 

 Group effect 



Exploration of environment 

 Acclimation 



Experimental analysis 

 Home range and homing 

 Exploration of environment 

 Group effect 



Experimental analysis 

 Sex recognition 

 Pheromones 



Experimental analysis 

 Courtship 

 Mating 



Anesthetics 



Experimental analysis 

 Gerontological pathologies 

 Ovary 



Histology 

 Testis 

 Teratoma 



Heavy metal pollutants 

 Zinc 



Lethal environmental limits 

 Experimental analysis 

 Organic pollutants 

 Cyanide 



Lethal environmental limits 

 Experimental analysis 

 Phenol 



Effect on fish 

 Fecundity 

 Rate of growth 

 Courtship 



Instrumental conditioning 

 Lethal environmental limits 

 Experimental analysis 

 Insecticide pollutants 

 TEPA 



Effect on fish 

 Testis 



Reproduction 

 Use in biological control 



803658 

 804360 



805374 

 804258 



805253 

 805255 

 805255 

 805254 

 805254 

 805253 

 805255 

 805870 



806570 



803758 

 804407 

 808971 



808977 



806829 

 806829 



809000 



806582 

 806072 



805452 

 805452 

 805454 



805453 



805451 



807805 

 807805 



804572 



Poeciliidae 

 (continued) 



Poecilia reticulata 



315 



