Four Central Points About Coevolution

Table 2 The various ways in which local populations of species coevolve

Form of interaction	Form of coevolution	Primary form of selection^a
Mutualism	Coevolving complementarity	Directional; stabilizing
Mutualism	Coevolutionary convergence	Directional; stabilizing
Trophic antagonistic	Coevolutionary escalation	Directional
Trophic antagonistic	Coevolving polymorphisms	Fluctuating
Trophic antagonistic	Coevolutionary alternation	Fluctuating
Competitive	Coevolutionary displacement	Directional
Trophic antagonistic	Attenuated antagonism	Directional

Modified from Thompson (2005)
^aMultiple forms of selection act on most of these forms of coevolution, but only the primary forms are shown here. See Thompson (2005) further discussion

ISSN: 1936-6434