BIOL10001 Lecture 18: BIOL10001 Lecture 18 Notes

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First vertebrate group to exploit the terrestrial environment (evolve from marine environment ( sh)) Frogs still dependent on moist environments adults have highly permeable skin eggs without shells, most species require water for reproduction. Extensive adaptive radiation (been in australia a long time) Variety of life history patterns from aquatic to terrestrial. Strictly terrestrial, no aquatic phase in life cycle. Often food in termite mounds or in burrows. Small, from 1-3cm, hard to nd unless calling. Lay eggs in moist soil under rocks and leaf litter. Most successful family worldwide but only one species in australia. Aim to control cane beetles (eating sugar cane) in 1935. Poisonous glands, major problems for native wildlife arrived in kakadu national park in 2001. Calls used by females to identify males of their own o spring to produce viable o spring. Sudden, dramatic decline in frog numbers in many countries beginning in the later 1970s.

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