Poeciliidae 

 (continued) 



Poecilia reticulata 



Xiphophorus 



316 



Marking and tagging 

 Vital dyes 

 Young 



Experimental analysis 

 Feeding captive fish 

 Use as test animal 

 Water pollutants 



Experimental analysis 

 Artificial model habitats 

 Mathematical population models 

 Computer analysis 

 Poecilia reticulata X 

 Poecilia latipinoa X 



Hybrid sterility 

 Poecilia sphenops X 



Hybrid sterility 



Poecilia velifera X 



Hybrid sterility 



Poecilia sphenops 



Spermatogenesis 



Development 



Experimental analysis 

 Subterranean waters 

 Evolutionary adaptation 

 Aggressive behavior 

 Courtship 

 Digenea 



Parasite life history 

 Experimental analysis 

 Expansion of range by man 

 Artificial rearing environments 

 Straining for food 

 Productivity 

 Poecilia sphenops X 

 Poecilia formosa X 

 Artificial hybridization 

 Triploidy 

 Poecilia reticulata X 

 Hybrid sterility 

 Poecilia velifera 



Sexually dimorphic fins 

 Function 



Developmental analysis 

 Androgens 

 Polymorphism 



Sexually dimorphic fins 

 Effects of isolation 

 Mating 



Aggressive behavior 

 Poecilia velifera X 

 Poecilia latipinna X 



Hybrid sterility 

 Poecilia reticulata X 

 Hybrid sterility 

 Poecilia vittata 



Population density 

 Poecilia vivipara 

 Decapoda 



As food for fish 

 Poeciliopsis 

 Oral teeth 



Identifying characters 

 Hybridogenesis 



Descriptive evolution 

 Population structure 

 Poeciliopsis lucida 

 Identifying characters 

 Meristics 

 Oral tcclh 

 Vertebrae 

 Poeciliopsis lucida X 

 Poeciliopsis monacha X 

 Identifying characters 

 Meristics 

 Oral teeth 

 Vertebrae 

 Hybridogenesis 



Descriptive evolution 

 Triploidy 

 Poeciliopsis monacha 

 Identifying characters 

 Meristics 

 Oral teeth 

 Vertebrae 

 Poeciliopsis occidentaJis 

 Endangered species 



Expansion of range by man 

 Poeciliopsis turrubarensis 

 Habitat preference 

 Orcadian rhythms 

 Priapella intermedia 



General structure and behavior 

 Xiphophorus 



Protein synthesis 



808928 



805410 

 805410 

 805410 



806142 

 806142 



806570 

 808269 



805844 

 805844 



806142 



806142 



805410 

 805410 

 808157 



803698 



807327 

 807327 

 807327 



807327 



807327 



807327 



807327 



807327 



807578 



807246 

 804677 



Dorsal fin 





Tissue culture techniques 



806828 



Coloration 



807184 



Inheritance 





Experimental analysis 



805884 



Descriptive evolution 



805884 



Neuroendocrine substances 





Effect on fish 





Urinogenital muscles 



805172 



Ovary 





Anatomy 





Function 



805909 



Development 



805909 



Testis 





Anatomy 





Function 



805909 



Development 



805909 



Sexually dimorphic fins 





Developmental analysis 



806492 



Descriptive evolution 



806492 



Caudal fin 





Allometry 



807184 



Inheritance 



806492 



Artificial hybridization 



806492 



Effect on fish 



805884 



Polymorphism 



807184 



Zoogeography 



807184 



Distribution 



807184 



Expansion of range by man 



808269 



Habitat preference 



807184 



Reproduction 



803507 



Melanoma 



806072 





806073 





806074 



Thyroid hyperplasia 



806074 



Teratoma 



806072 



Carcinogenic agents 





Effect on fish 



806073 



Artificial fertilization 



803507 



Tissue culture techniques 



804685 



Xiphophorus clemenciae 





Gonopodium 



807184 



Xiphophorus couchianus 





Relationships 



807184 



Subspecies 



805884 





807184 



Coloration 



807184 



Gonopodium 



807184 



Habitat preference 



807184 



Xiphophorus gordoni 





Invalidation 



807184 



Xiphophorus helleri 





New subspecies 



807184 



Relationships 



807184 



Subspecies 



807184 



Meristics 



807184 



Morphometries 



807184 



Lipid metabolism 





Giucose-6-phosphate dehydrogenase 





Axial skeletal muscles 





Biochemistry 



808941 



Liver 





Biochemistry 



808941 



Coloration 



807184 



Polymorphism 



803788 



Albinism 



805738 



Fins 





Inheritance 





Abnormality 



805767 



Optic tectum 





Histology 





Function 



809096 



Gas bladder 





Use in syslematics 





Anatomy 



807954 



Function 



807954 



Immunological reactions 





Change with age 





Experimental analysis 



809047 



Allograft reaction 





Scales 





Embryo as transplant 





Experimental analysis 



809047 



Viviparity 





Anatomy 





Descriptive evolution 



809047 



Testicular cycles 



805035 



Gonopodium 



807184 



Abnormality 



805790 



Sexually dimorphic size 



805035 



Fertilization 





Vivi parity- 





Ovary 



809047 



Sex reversal 



805035 



