Artificial intraspecific hybridi; 

 Isolating mechanisms 

 Multiple choice testing 

 Experimental analysis 

 Temperature 

 Acclimation 



Experimental analysis 

 Expansion of range by man 



Species recognition 





Multiple choice testing 





Experimental analysis 



808326 



Multiple choice testing 





Color variety 





Species recognition 



808326 



Xiphophorus helleri X 





Xiphophorus maculatus X 





Skin 





Amino acids 





Rate of growth 





Biochemistry 



806827 



Color variety 





Inheritance 



805776 





805777 



Axial skeletal muscles 





Amino acids 





Rate of growth 





Biochemistry 



806827 



Optic tectum 





Histology 





Function 



809096 



Territoriality 



806897 



Dominance social hierarchy 





Experimental analysis 



806897 



Melanoma 





Developmental analysis 



804356 



DNA content and function 





Experimental analysis 



804551 





809088 



Salinity 



804551 



Tissue culture techniques 





Experimental analysis 



806828 



Amino acids 





Experimental analysis 



806826 



Xiphophorus maculatus 





Lipid metabolism 





Glucose-6-phosphate dehydrogenase 





Axial skeletal muscles 





Biochemistry 



808941 



Liver 





Biochemistry 



808941 



Coloration 





Inheritance 





Sex chromosomes 



807269 



Color variety 





Inheritance 



805758 



Axial skeletal muscles 





Anatomy 





Function 



803865 



Descriptive evolution 



803865 



Melatonin 





Pigment cells 





Effect on fish 



803609 



Sex reversal 





Radioactivity 





Experimental analysis 



809087 



Isolating mechanisms 



805410 



Multiple choice testing 





Experimental analysis 



808326 



Light 





Effect on fish 





Survival in captivity 



805750 



Radioactivity 





Effect on fish 





Sex reversal 



809087 



Species recognition 





Multiple choice testing 





Experimental analysis 



808326 



Multiple choice testing 





Color variety 





Species recognition 



808326 



Ichthyophonus disease 



806848 



Xiphophorus maculatus X 





Xiphophorus pygmaeus X 





Pigment cells 





Inheritance 



807269 



Artificial hybridization 



807269 



Xiphophorus milleri 





Lipid metabolism 





Glucose-6-phosphate dehydrogenase 





Axial skeletal muscles 





Biochemistry 



808941 



Liver 





Biochemistry 



808941 



Xiphophorus milleri X 



Xiphophorus pygmaeus X 

 Pigment cells 

 Inheritance 

 Artificial hybridization 

 Xiphophorus montezumae 

 Subspecies 



Lipid metabolism 



Glucose-6-phosphate dehydrogena: 

 Axial skeletal muscles 



Biochemistry 

 Liver 



Biochemistry 

 Artificial intraspecific hybridization 

 Caryotype 

 Xiphophorus pygmaeus 

 Subspecies 



Coloration 

 Inheritance 



Sex chromosomes 

 Polymorphism 

 Coloration 

 Xiphophorus pygmaeus X 

 Xiphophorus maculatus X 

 Pigment cells 

 Inheritance 

 Artificial hybridization 

 Xiphophorus milleri X 



807269 

 807269 



Inheritance 

 Artificial hybridization 



Xiphopho 

 Subspecit 

 Artificial 



ntraspecific hybridization 



Caryotype 

 Exocoetiformes 



Key 

 Belonidae 



Key 



Popular names 



Nematoda 



Parasite life history 

 Distribution 



Larva 



Seasonal abundance 

 Habitat preference 



Ablennes 



Key 

 Ablennes anastomella 

 Visceral skeleton 

 Urohyal 

 Anatomy 



Identification 

 Ablennes hians 

 Cestoda 



Incidence of infection 

 Belone bellone 

 Popular names 

 Telencephalon 



Anatomy 

 Metencephalon 

 Histology 

 Function 

 Gills 



Anatomy 



Histology 

 Arterial system 



Gills 

 Digenea 



Parasite systematics 

 Cestoda 



Parasite life history 



Host parasite interacti 

 Distribution 

 Hydrostatics 

 Hydrodynamics 

 Myxosporidiosis 

 Belone ciconia 

 List of types 



Iconotype 

 Strongylura crocodilus 



Habitat preference 

 Strongylura marina 

 Monogenea 



Parasite life history 

 Digenea 



Parasite systematics 

 Distribution 



807269 

 807269 



804232 

 804361 



808407 

 804267 

 807885 



807307 



804454 

 806282 

 804562 



804563 



803786 

 804895 

 803786 



803786 



806261 



806632 

 806261 



806282 

 807979 

 807979 

 805466 



805935 

 807935 



Poeciliidae 



(continued) 



Exocoetiformes 



317 



