EEMB 113 Lecture Notes - Lecture 4: Gymnophiona, Squamata, Internal Fertilization
15 Nov 2017
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Picture up as diagram but not discussed in class-> don"t worry. Item in the slides and talk about in class. Redistributing nutrients and resources across california when they travel across the land. See body size decreases in terrestrial mammal but not in marine mammals. Adaptations for land: reproduction internal fertilization are predominates in modern caecilians and salamanders, and reptiles. Most but not all anurans have external fertilization. Internal fertilization: condition where sperm and ovum come into contact within the reproductive tract or cloaca of a female. Reptile epidermis is thicker and includes multiple forms of keratin; assists with abrasion but particular useful for resisting desiccation. Skin modified into many different types of scales serving diversity of functions. Scales commonly overlap in squamates but not crocodylians and turtles. The extant amphibians: 3 major clades in amphibia (class) Distributed in different density and different areas of the skin depending on their function. 2 sound transmission channels in their inner ear.
