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19 Cards in this Set
- Front
- Back
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the seasonal increase of urea in spadefoot toads that allow water to permeate skin
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countercurrent gradient
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what hormone is responsible for spadefoot water uptake?
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Argenine Vasotocin (AVT)
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AVT:
1. Stimulates water uptake thru skin 2. Reduces urine production and... 3? |
3. increases water resorption from bladder
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derived from field metabolic rates
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annual energy budget
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order of the salamanders
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Caudata
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1. non-avian dinosaurs
2. crocodylians 3. birds 4. pterosaurs |
archosauromorpha
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all theropods closely related to birds
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coelurosauria
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Infraclass containing marine diapsids and lepidosaurs (tuatara, sauria, mosasaurs)
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lepidosauromorpha
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tuatara
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Sphenodontidae
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warning coloration without mimicry
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Batesian mimicry
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shedding a tail when attacked
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caudal autonomy
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how juvenile iguanas acquire symbiont bacteria for cellulose digestion
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coprophagy
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cannibalism is usually _____ and directed _____
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asymmetric; downward
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yolk synthesis within maternal liver
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vitellogenesis
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sex determination by temperature, NOT genotype
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TSD
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constraints on signal production (3)
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1. small body size (limits distance)
2. temperature 3. exposure (predators) |
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chemicals common communication in which group?
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Urodele
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in Lepidosaurs, opens directly into oral cavity to receive chemical signals via tongue
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vomeronasal
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delicate spiral bones in nasal passages, dehumidify exhalation to prevent water loss/dehydration
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turbinate bones
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