From behavior that
bonds to bonding behavior (expensive tickets à
inexpensive behavior) – how and why there are three large salamander clades
(Salamandridae, Ambystomatidate, Plethodontidae)
(Hynobids – no coupling of brain an behavior relative to endurance vs
burst speed via heterochronoy, neotony etc) (neotony – increase in endurance to
arise sooner than later).
Salamandrids – no adaptive life cycle between burst and
endurance except in Notopthamlus (change to motion to head pheromone). Motion to tail otherwise. Adults stay in water. Behavior that bonds.
Environment delivers pheromone.Efts need adequate surface litter – so endurance
is for finding trees.
Ambystomatids decouple and move over land as adults. Locomtion overriding behavior. Muscles dominate.Metamorphosis decouples
locomotor performance (higher burst speed larvae – higher endurance
No significant use of pheromones. Trees found find other watersheds.
Plethodontid larvae in streams consume larger prey items. Adults higher endurance got to new locations
where larvae can develop faster with larger food items across generations and
developed straddle walk with change to pheromone bonding behavior\. Muscles (straddle walk and phereomone delivery) that
use brain dominates.