Thalamus 487 Thalamus 



to Thermal pollution (See: Heat pollution) 



Xray treatment 501 Thermal sensitivity 



593 Thermal springs 



Thiaminase (See: Antivitamin content) 

 480 Throat muscles 

 526 Thrombocytes 



524 Thymus (See also: Organ of Leydig) 

 Thyrocalcitonin (See: Calcitonin) 



511 Thyroid (See also: Sexually dimorphic thyroid) 



512 Thyroid hormone 

 699 Thyroid hyperplasia 



508 Thyroid stimulating hormone 

 508 Thyrotroph 

 670 Tidal rhythms 

 590 Tide pools 

 605 Tides 



744 Tissue culture techniques 



Tissue transplantation (See also: Allograft reaction, 

 Embryo transplantation, Histocompatibility factors) 

 531 Toadfish (See: Batrachoidiformes) 



Tongue 



Tonguefish (See: Cynoglossidae) 

 535 Tooth replacement 



Topminnow (See: Cyprinodontidae) 

 593 Torrential streams 



Toxic substances (See: Embryo antimetabolite treatment, 

 Fish control agents, Pesticide content. Poison 

 collecting, Poison content, Poisons liberated into water, 

 Poisonous as food, Pollutant content, Radioactive 

 content. Venom glands, Venomous fish, Waterborne 

 antigrowth factor, Waterborne antireproductive factor, 

 and under Poisonous fish and Water pollutants) 



Toxicological testing (See: Environment control devices, 

 Use as test animal. Water pollutants) 



Training techniques (See also under Behavior in 

 694 experiments) 



Transplantation (See: Introduction for fishery. Tissue 

 transplantation) 



Transplantation in nature (See also: Artificial propagation 



745 and planting. Introduction for fishery) 

 736 Transportation (See also: Fish transportation) 

 735 Trapping 



735 Trawling 



701 Treatment for disease 



619 Trematoda (See also: Digenea, Monogenea) 



583 Triassic 



Trigeminal nerve 



Triggerfish (See: Balistidae) 

 582 Triploidy 

 489 Trochlear nerve 



Trout (See: Salmonidae) 



Tuberculosis (See: Fish mycobacteriosis) 

 494 Tuberous receptors 



Tuna (See: Scombridae) 



Turbidity (See: Silt) 



Twinning (See: Double monsters) 



Type specimen (See: Care of types, Lectotype, List of 

 types, Neotype, New species. New subspecies) 



Ulcer disease 

 703 Ulcerative dermal necrosis 

 516 Ultimobranchial body 



Infrastructure (See: General sub-cellular structure as well 

 as Ultrastructure of various chemical and biological 

 structures) 

 500 Underwater optics 



Unilateral compensation (See also: Regeneration) 



Unsaturated fat content (See also under Fish as food) 



Ureter 



Urinary papilla (See also: Cloaca) 

 545 Urine 



Urinogenital muscles 

 504 Urophysis 



743 Use as test animal (See also: Toxic substances) 

 733 Use in biological control 



731 Use in classroom 



Use in systematics (See also use in describing New 

 taxonomic unit, and in the Diagnosis, Redefinition, and 

 Redescription of systematic groups) 

 552 Uterus 



489 Vagus nerve 



Validation (of scientific name) 



Variation (See under Infraspecific variation and Statistics 

 586 and statistical analysis) 



Variation with age (change in variation with increasing 

 age) 

 616 Vascular plants 

 505 Vasotocin 



Vector of fish disease 

 704 Velvet disease 



Venom glands 



732 Venomous fish (See also: Poisonous fish) 

 522 Venous system 



Ventral fins (See: Pelvic fins) 

 468 Vertebrae 



Vertical distribution (See also: Deep scattering layer. Dis- 

 tribution within habitat, and Under Freshwater 

 594 environment and Marine environment) 

 689 Vertical migrations 



Vexillum 

 703 Viral hemorrhagic septicemia 

 702 Virus diseases 



Visceral sensory nervous system 



Visceral skeletal muscles 



Visceral skeleton (See also: Breathing, and under Feeding, 

 471 Gills, and Gut) 



Vision (See: Pineal light sensitivity, Visual signals, and 

 under Eye and Spatial orientation) 

 500 Visual pigments 

 496 Visual senses 

 500 Visual sensitivity and acuity 

 696 Visual signals 



451 Vitamin content (See also: Antivitamin content) 

 577 Vitamin requirements 



Viviparity (See also: Birth, Copulatory organs, 

 548 Parturition, Uterus) 



681 Warning display (See also: Aggressive display) 



Waste treatment for habitat (See also: Habitat 



724 preservation and under Environment manipulation) 



448 Water content (See also: Ion and water relationships) 

 Water density (See also: Inorganics in water. Salinity) 



610 Water hardness (See also: Inorganics in water) 



460 Water ingestion 



604 Water movement (See also: Lotic waters. Surf. Tides) 

 720 Water pollutants 



Water pressure (See also: Pressure sensitive gas bladder, 



605 Pressure sensitivity. Vertical distribution) 

 Waterborne antigrowth factor (See also: Artificial rearing 



730 environments, Aquarium water chemistry) 



Waterborne antireproductive factor (See also: Artificial 

 728 breeding environments, Aquarium water chemistry) 

 492 Weberian apparatus 

 667 Weight frequency (See also: Population structure) 



Weight length relationship (See also: Coefficient of 

 572 condition) 

 740 Wet preservation 



Whirling disease 



White muscles (See: Axial skeletal muscles) 



Whitefish (See: Salmonidae) 



Whole body physiology 

 671 Winterkill 

 575 Wound healing 

 575 Wounds 



Wrasse (See: Labridae) 



Xiphosura 

 740 Xray photography 

 Xray treatment 



Radioactivity) 



(See: Radiation techniques. 



852 



