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ALAT 30: Amphibians Flashcards | StudBud
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ALAT 30: Amphibians
ALAT 30: Amphibians
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AALAS ALAT Chapter 30
Flashcards
31 cards
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Practice quiz
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Host live
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Questions
31
Answers
1
In African and Western clawed frogs, how can you identify adult males from adult females?
Males are generally larger.
Males are generally pear-shaped.
Males have nuptial pads on their inner forearms.
Males have a protrusion of papillary tissue near the cloaca.
2
What does "ectothermic" mean?
Body temperature is internally regulated.
Body temperature is regulated by the external environment.
Skin is sensitive to light.
Skin is very thick to keep in heat.
3
What do glands in the skin of amphibians secrete?
A granular substance that repels predators
A shiny layer that serves as a sexual attractant
A coating that becomes a hard shell
A slimy, protective layer
4
Which of the following are signs of pain & distress in amphibians?
All of the above
Redleg
Loss of appetite
Lethargy
5
What is a behavior that is often seen in amphibians, especially as a result of overcrowding?
Seizures
Nepotism
Popcorning
Cannibalism
6
In general, what is thought to be good environmental enrichment for amphibians?
Balls and toys
Resting boards
Heat lamps
Hiding places
7
If a frog has an incision on its abdomen, what kind of surgery did it most likely have?
Egg collection
Cesarean section
Tumor implantation
Heart bypass
8
What step is necessary when removing amphibians from shipping crates?
Mix shipping water with new water to avoid shock.
Rinse thoroughly with dechlorinated water to remove feces.
Apply artificial mucous coat.
Place in cool water so their body temperature adjusts.
9
What are two
noninvasive
methods for identification of amphibians?
Tattooing, cage cards
Toe clipping, cage cards
Cage cards, photographs
Photographs, toe clipping
10
What type of caging system requires that the water be changed frequently?
Flow-through system
Semi-flow-through system
Static system
Recirculating system
11
TRUE OR FALSE: Amphibians are resistant to chemical contamination.
True
False
12
Which drug is appropriate for euthanasia of amphibians?
Lidocaine
Carbon dioxide
Isoflurane
Tricaine methanesulfonate
13
What is the most widely used amphibian in research?
African clawed frog
Axolotl
Tiger salamander
Western clawed frog
14
Transforming from an aquatic animal with gills into a terrestrial animal with lungs is called:
Gill depletion
Metamorphosis
Pneumotransition
Terreforming
15
When handling amphibians, what PPE should be worn?
Dry, gloves with powder
Dry, leather gloves
Wet, powder-free gloves
Wire mesh gloves
16
What is neoteny?
When a salamander reaches maturity without metamorphosis
A tadpole losing its gills and moving to the land
A newborn salamander
A deformed (mutant) salamander
17
What humidity level should an amphibian room be kept at?
80%
60%
50%
70%
18
When mating frogs in the laboratory, how is the male frog stimulated for sexual activity?
He is placed in a container of very cool water.
He is injected with insulin.
He is injected with hormones.
He is placed in a container of very warm water.
19
What would be an appropriate housing density for newly hatched tadpoles?
50 per liter of water
100 per liter of water
5 per liter of water
500 per liter of water
20
Why isn’t toe clipping acceptable for some amphibian species?
Their toes get infected easily.
The IACUC considers it unacceptable.
They tend to stop eating after toe clipping.
Their toes will grow back.
21
Which amphibians are tongueless and must direct food into their mouths with their front legs?
Tiger and leopard salamanders
Axolotls and newts
African and Western clawed frogs
Leopard frogs and bullfrogs
22
With a flow-through water caging system, what must be removed from the incoming water?
Chlorine
Sodium
Oxygen
Nitrogen
23
What is the scientific name of the African clawed frog?
Ambystoma tigrinum
Rana catesbeiana
Xenopus tropicalis
Xenopus laevis
24
What is the scientific name of the Tiger salamander?
Ambystoma tigrinum
Xenopus laevis
Ambystoma mexicanum
Rana catesbeiana
25
What kind of an enclosure would an amphibian prefer?
Cool, light, moist
Cool, dark, moist
Warm, light, dry
Warm, dark, dry
26
In frogs, what does the tympanic membrane do?
It becomes larger or smaller according to the temperature.
It aids in mating.
It serves as the external ear.
It interprets infrared signals.
27
TRUE OR FALSE: Amphibians are sensitive to water temperature changes.
True
False
28
Which would NOT cause amphibians to become lethargic, anorexic, or trigger an illness?
Fluctuations in environmental temperature
Live feed in their cage
Too much handling
Many disturbances
29
Which of the following statements is
TRUE
?
Use only minimal surface contact when handling an amphibian.
Axolotls should be picked up with one hand.
Nets should always be used to capture amphibians.
Amphibians should be handled only when necessary.
30
What method is preferred for sanitizing the primary enclosures of amphibians?
No sanitization
Cage washer with detergents and a 180 degree F final rinse
Manual cleaning with detergents and disinfectants
Manual cleaning without detergents followed by autoclaving
31
In addition to their lungs, most adult amphibians also absorb oxygen through their:
cloaca.
webbed feet.
skin.
large intestine.
