Unformatted text preview: estimation really isn’t perfect. (1) He only samples one tree, a lot of assumptions about host-specificity (that the host-specificity of beetles is the same as all arthropods). (2) He assumes that the single tree he sampled has the same host-specificity as all tropical trees. He only sampled one tree. 5) Insect body plan – Head, thorax (3 segments each with a pair of legs), abdomen (around 11 segments, but not for all insects). a) Open circulatory system – Does not carry oxygen, dorsal heart pumps blood to the dorsal artery from which blood is circulated through the internal cavity and goes to organ. 6) Cuticle is expandable, wings develop from the cuticle, it is often lined with waxes to prevent desiccation....
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- Spring '09
- Biology, Terry Erwin, Tropical Trees, host specific arthropods, dorsal heart pumps