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Reactions To Infidelity: Individual, Gender, And Situational Predictors Of Relationship Outcome And Forgiveness, Marcia B. Kimeldorf
Reactions To Infidelity: Individual, Gender, And Situational Predictors Of Relationship Outcome And Forgiveness, Marcia B. Kimeldorf
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Infidelity in romantic relationships can be devastating, and can cause many complex emotional reactions. The Jealousy as a Specific Innate Module (JSIM) hypothesis posits that due to differing reproductive pressures over evolutionary history, men and women have evolved different mechanisms to respond to infidelity. JSIM proposes that men, due to fears of cuckoldry, will respond with intense jealousy to a partner's sexual infidelity. It proposes that women, who are certain of their maternity but may suffer severe consequences if their mate falls in love with another and diverts his resources elsewhere, will respond with intense jealousy to emotional infidelity. These …
Evolution Of Dioecy In Echinocereus Coccineus: Relative Influence Of Pollinators, Resources And Elevation Over Multiple Spatial Scales, Summer Ann Scobell
Evolution Of Dioecy In Echinocereus Coccineus: Relative Influence Of Pollinators, Resources And Elevation Over Multiple Spatial Scales, Summer Ann Scobell
Open Access Dissertations
"Why have separate sexes?" is a fundamental question in biology and has been investigated intensively since Darwin first proposed two hypotheses: Separate sexes evolve 1) to avoid detrimental effects of self-fertilization or 2) to improve allocation of scarce resources to each sex's reproductive function. In animal-pollinated plants dioecy is hypothesized to be favored when small, generalized pollinators predominate because they increase self-fertilization rates of plants. I concurrently tested Darwin's hypotheses using Echinocereus coccineus (Cactaceae). I found, as predicted, when specialized pollinators (hummingbirds) were excluded from plants and only generalized pollinators (bees) visited, selfing rates of plants increased 238%. High selfing …