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dc.contributor.advisorLevinton, Jeffrey Sen_US
dc.contributor.authorLyons, Patricken_US
dc.contributor.otherDepartment of Ecology and Evolutionen_US
dc.date.accessioned2013-05-22T17:35:11Z
dc.date.available2013-05-22T17:35:11Z
dc.date.issued1-Aug-12en_US
dc.date.submitted12-Augen_US
dc.identifierLyons_grad.sunysb_0771E_11061en_US
dc.identifier.urihttp://hdl.handle.net/1951/59776
dc.description106 pg.en_US
dc.description.abstractI describe several assays designed to examine how costs and benefits interact in the development of mutualisms between species. A mutualism occurs between alpheid shrimp and gobiid fishes. These shrimp have poor vision but good burrowing ability. Individual shrimp share their burrows with a goby that, with good vision but no burrowing ability, acts as a watch-out warning shrimp when predators approach. In the Caribbean, a single species, Nes longus, which has been described as a mutualist, follows these behaviors. Others, such as Ctenogobius saepepallens, casually use shrimp burrows, rarely warn shrimp of danger, and are better described as commensalists. I found that N. longus more effectively avoids predators while using shrimp burrows than C. saepepallens. Thus, tight mutualism with shrimp is advantageous, especially in areas where shrimp burrows are abundant. I have quantified several behaviors that likely allow N. longus to use burrows more effectively. Why then would C. saepepallens not evolve such behaviors and become a strict mutualist if strict mutualism is advantageous? For gobies, there is likely a cost associated with mutualism with shrimp. To warn shrimp, gobies must remain at a burrow entrances and restrict foraging to that small area. I found that on the same restricted diet, C. saepepallens lost more weight than N. longus. Thus, C. saepepallens may be constrained to a casual association with shrimp due to foraging requirements. This story indicates that strict mutualism may evolve infrequently because few species can overcome the inherent costs of mutualism.en_US
dc.description.sponsorshipStony Brook University Libraries. SBU Graduate School in Department of Ecology and Evolution. Charles Taber (Dean of Graduate School).en_US
dc.formatElectronic Resourceen_US
dc.language.isoen_USen_US
dc.publisherThe Graduate School, Stony Brook University: Stony Brook, NY.en_US
dc.subject.lcshEcology--Behavioral sciences--Evolution & developmenten_US
dc.subject.otheralpheid, coral reefs, gobiidae, mutualism, shrimp-gobyen_US
dc.titleThe evolution of mutualism between alpheid shrimp and gobiid fishes: a balance between benefits and costsen_US
dc.typeDissertationen_US
dc.description.advisorAdvisor(s): Levinton, Jeffrey S. Committee Member(s): Futuyma, Douglas J; Bell, Michael A; Hixon, Mark A.en_US
dc.mimetypeApplication/PDFen_US


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