BIOL 1107 Chapter Notes - Chapter 39: Loose Connective Tissue, Spermatophore, Acclimatization
Document Summary
Chapter 39: structure and basic physiology: elephants- live in areas with temperatures as high as 50oc (122of). Increase fitness: trade-offs- inescapable compromises between traits; most important constraint on adaptation, e. g. Energy reproduce vs. energy to fight off disease: spermatophore- packet of sperm surrounded by a large, gelatinous mass, e. g. The(cid:374) added (cid:271)a(cid:272)teria to the (cid:272)ri(cid:272)ket"s he(cid:373)ol(cid:455)(cid:373)ph (cid:894)(cid:272)ir(cid:272)ulati(cid:374)g fluid si(cid:373)ilar to blood). It lyses the hemolymph (makes it clearer; tested on spectrophotometer). Compared to crickets who did not have their spermatophores removed, there was fewer bacteria lysed in the experimental crickets. Trade-off between making spermatophore and investment into immune function. Then, they i(cid:374)je(cid:272)ted the (cid:272)ri(cid:272)ket"s (cid:271)a(cid:272)terial (cid:272)ell (cid:449)alls (cid:449)ith lsp (lipopolysaccharide) to mount an immune response. Injected crickets produced smaller spermatophores (size of gelatinous mass decreased) than the control crickets. Cells that store energy are dominated by large fat droplets. Matrix comprises extracellular fibers and other materials and each type of connective tissue secretes a different type of extracellular matrix.
