Fish taxonomy Flashcards
Most primitive class in chordata phylum
agnatha
Do chondrichthyes have swim bladders?
No
What kind of kidneys do fish have?
Mesonephric
Which immunoglobulin do fish produce?
IgM and IgZ (thymus and kidneys of zfish)
Where are lymphocytes produced
Only thymus
Do fish have bone marrow?
No
Physostomes
Fish with connection between bladder and alimentary canal
Physoclisti
Fish that lack a connection between bladder and alimentary canal - a gas gland introduces gas to the swim bladder
Names of 3 otolith organs
utriculus (vestibular)
sacculus (sound detection)
lagena (sound detection)
Main nitrogenous waste
Ammonia (NH3)
Goldfish should be maintained at what temp?
18-24 C
Zfish should be maintained at what temp?
24-28 C
Zfish hardness recs
80-200 ppm
Zfish and Gfish pH
7-7.6
Zfish conductivity
125-2500 uS
3 types of filtration
mechanical (particle filtration)
chemical (filtration of ions)
biological (nitrogenous waste)
Nitrosomonas
ammonium to nitrite (NH4+ –> NO2-)
Nitrobacter
Nitrite to nitrate (NO2- –> NO3-)
Platyfishes and swordtails are used for what kind of research?
Spontaneous melanoma
Japanese medaka genus/species
Oryzias latipes
Medaka uses
coloration, sexual behavior, development, transgenics
XX in Medaka are which color?
white
XY in Medaka are which color?
orange-red
Fathead minnow genus/species
Pimephales promelas
Fathead minnow use
Water tox
Rainbow trout g/s
Oncorhyncus mykiss
What does trout sperm contain
Protamine
Gfish g/s
Carassius auratus
Gfish use
Neuro, endocrine, tox
4 ways to take blood from fish
Caudal vein
Dorsal aorta
Cardiac puncture
Caudal severance (terminal)
MS-222 dose for sedation vs euth
Sedation: 5-30 ppm
Euth: 40-100 ppm
Another option for anesth/euth
Quinaldine sulfate, benzocaine
