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Eukaryon

Class Year

2007

Keywords

mimicry, Charles Darwin, pseudocopulation, mutualism

Abstract

Orchidaceae are a family of plants that are known for tricking their pollinators through means of deceptive pollination and sexually deceptive mechanisms. A deceptive flower is one that offers no reward to its pollinator, but still attracts pollinators by mimicking a plant or an insect that does offer a reward. Sexual deception occurs when a plant sends a signal to its pollinator, tricking the insect into thinking the plant is available for sex, despite the pollinator being biologically unable to successfully copulate with the plant. Orchid fertilization is of interest to evolutionary biologists who aim to uncover how these rewardless plants continue to be pollinated by reward-seeking pollinators. The use of phenotypic variation, strong olfactory cues, and adapted plant parts to lure in insects are some of the ways in which orchids achieve success. Other findings suggest that orchids have adapted to ensure cross-fertilization, as opposed to self-fertilization, in order to produce more viable offspring. In this review I will explore how the use of deception, rewardlessness, and pheromones allow for the continued reproductive success of several orchid species.

Disclaimer

Eukaryon is published by students at Lake Forest College, who are solely responsible for its content. The views expressed in Eukaryon do not necessarily reflect those of the College. Articles published within Eukaryon should not be cited in bibliographies. Material contained herein should be treated as personal communication and should be cited as such only with the consent of the author.