Sympatric speciation

Evolution Interaction-dependent evolution of E Coli Symbiotic sympatric speciation Genetic fixation of phenotypic differentiation... 

The differentiation of role between the molecules looks like symmetry breaking. When initially two states are equally possible, and later only one of them is selected, it is said that the symmetry is broken. In the differentiation of roles of molecules studied here, however, the molecules have different characters as to the replication speed from the beginning. Here a difference in one character (i.e., the replication speed) is transformed into the difference in the control behavior and in the role as a carrier of heredity. In other words, a characteristic with already broken symmetry is transformed into a different type of symmetry breaking. This kind of transformation of one character s difference to another is often seen in biology, as we have already discussed in the study of morphogenesis and sympatric speciation [16,17]. 

Phillimore, A.B., Orme, C.D.L., Thomas, G.H. et al. (2008). Sympatric speciation in birds is rare Insights from range data and simulations. American Naturalist 171,646-657. 

Bush, G. L. (1975) Sympatric speciation in phytophagous parasitic insects. In Evolutionary Strategies of Parasitic Insects and Mites (Price, P. W., ed.) pp. 187-206. Plenum Press, New York. 

Smith, M. A. and Cornell, H. V. (1979) Hopkins host-selection in Nasonia vitripennis and its implications for sympatric speciation. Anim. Behav., 27, 365-70. 

Field and laboratory bioassay of chemosignals from related sympatric and allopatric species (overlapping and discrete distributions) are essential to an understanding of the relatedness or otherwise of functionally active compounds. The semiochemicals involved in speciation surely utilise the main and vomeronasal senses, but their relative contributions cannot be predicted at present. 

Jousson, O., Bartoli, P. and Pawlowski, J. (2000) Cryptic speciation among intestinal parasites (Trematoda Digenea) infecting sympatric host species (Sparidae). Journal of Evolutionary Biology 13, 778-785. 

Rundle, H.D., L. Nagel, J.W. Boughman, and D. Schluter (2000). Natural selection and parallel speciation in sympatric sticklebacks. Science 287 306-308. 

Sympatric, parapatric or allopatric the most important way to classify speciation Philosophical Transactions of the Royal Society Series B363, 2997-3007. 

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