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Home Evidence for a facultative mutualism between Aphaenogaster picea and a guild of New England...

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Evidence for a facultative mutualism between Aphaenogaster picea and a guild of New England myrmecochores

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Identifier	Thesis 2118
Author	Clark, Robert E., ǂd 1985-
Title	Evidence for a facultative mutualism between Aphaenogaster picea and a guild of New England myrmecochores
Publisher	Central Connecticut State University
Date	2010
Resource Type	Master's Thesis
Notes	Myrmecochory is a widespread and diverse mutualism between ants and flowering plants in which a modified seed appendage, an elaiosome, is provided to ants as a food reward. In eastern North American forests, ants of the genus Aphaenogaster disperse seeds of many abundant herbaceous plants called myrmecochores. I conducted survey work in Connecticut forests to reveal which member(s) of the ant genus Aphaenogaster are dispersing plant seeds and which myrmecochores were most abundant. I then performed a cafeteria feeding experiment to understand how the mutualism may influence populations of Aphaenogaster. From survey work I found that in local forests A. picea is highly abundant and co-occurs with many myrmecochorous plants. Results of the cafeteria experiment revealed that when presented with a mix of myrmecochorous seeds A. picea can use elaiosomes as a substitute food source when insect protein is not available. However, A. picea does not gain an additional benefit from elaiosome if they also have ample insect protein. This provides evidence for a “facultative mutualism.” Ants take advantage of elaiosomes when the food is needed but do not gain any benefit when there is plenty of insect prey or carrion available to the colony. The mutualism between A. picea and myrmecochores is still important, but the interaction is a result of A. picea’s high abundance, not the cause.
Subject	Mutualism (Biology) Ants -- Behavior
Department	Department of Biological Sciences
Advisor	King, Joshua R. 1974-
Type	Text
Digital Format	application/pdf
Language	eng
OCLC number	703428240
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Home Evidence for a facultative mutualism between Aphaenogaster picea and a guild of New England...

Evidence for a facultative mutualism between Aphaenogaster picea and a guild of New England myrmecochores

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