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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Does biological intimacy shape ecological network structure? A test using a brood pollination mutualism on continental and oceanic islands

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Author(s):
Hembry, David H. [1, 2] ; Raimundo, Rafael L. G. [3, 4, 5] ; Newman, Erica A. [6] ; Atkinson, Lesje [1, 7] ; Guo, Chang [8, 9] ; Guimaraes, Jr., Paulo R. [3] ; Gillespie, Rosemary G. [1]
Total Authors: 7
Affiliation:
[1] Univ Calif Berkeley, Dept Environm Sci Policy & Management, Berkeley, CA 94720 - USA
[2] Univ Arizona, Dept Ecol & Evolutionary Biol, Tucson, AZ 85721 - USA
[3] Univ Sao Paulo, Dept Ecol, Inst Biociencias, Sao Paulo, SP - Brazil
[4] Univ Fed Paraiba, Ctr Ciencias Aplicadas & Educ, Dept Engn & Meio Ambiente, Lab Ecol Anim, Rio Tinto, PB - Brazil
[5] Univ Fed Paraiba, Ctr Ciencias Aplicadas & Educ, Programa Posgrad Ecol & Monitoramento Ambiental, Rio Tinto, PB - Brazil
[6] Univ Arizona, Sch Nat Resources & Environm, Tucson, AZ - USA
[7] Suny Downstate Med Ctr, New York, NY - USA
[8] Univ Calif Berkeley, Dept Integrat Biol, Berkeley, CA 94720 - USA
[9] Univ Calif San Francisco, Sch Dent, San Francisco, CA - USA
Total Affiliations: 9
Document type: Journal article
Source: Journal of Animal Ecology; v. 87, n. 4, SI, p. 1160-1171, JUL 2018.
Web of Science Citations: 2
Abstract

1. Biological intimacy-the degree of physical proximity or integration of partner taxa during their life cycles-is thought to promote the evolution of reciprocal specialization and modularity in the networks formed by co-occurring mutualistic species, but this hypothesis has rarely been tested. 2. Here, we test this ``biological intimacy hypothesis{''} by comparing the network architecture of brood pollination mutualisms, in which specialized insects are simultaneously parasites (as larvae) and pollinators (as adults) of their host plants to that of other mutualisms which vary in their biological intimacy (including ant-myrmecophyte, ant-extrafloral nectary, plant-pollinator and plant-seed disperser assemblages). 3. We use a novel dataset sampled from leafflower trees (Phyllanthaceae: Phyllanthus s. l. {[}Glochidion]) and their pollinating leafflower moths (Lepidoptera: Epicephala) on three oceanic islands (French Polynesia) and compare it to equivalent published data from congeners on continental islands (Japan). We infer taxonomic diversity of leafflower moths using multilocus molecular phylogenetic analysis and examine several network structural properties: modularity (compartmentalization), reciprocality (symmetry) of specialization and algebraic connectivity. 4. We find that most leafflower-moth networks are reciprocally specialized and modular, as hypothesized. However, we also find that two oceanic island networks differ in their modularity and reciprocal specialization from the others, as a result of a supergeneralist moth taxon which interacts with nine of 10 available hosts. 5. Our results generally support the biological intimacy hypothesis, finding that leaf-flower-moth networks (usually) share a reciprocally specialized and modular structure with other intimate mutualisms such as ant-myrmecophyte symbioses, but unlike nonintimate mutualisms such as seed dispersal and nonintimate pollination. Additionally, we show that generalists-common in nonintimate mutualisms-can also evolve in intimate mutualisms, and that their effect is similar in both types of assemblages: once generalists emerge they reshape the network organization by connecting otherwise isolated modules. (AU)

FAPESP's process: 09/54422-8 - Structure and coevolutionary dynamics in mutualistic networks
Grantee:Paulo Roberto Guimarães Junior
Support type: Research Grants - Young Investigators Grants
FAPESP's process: 14/21106-4 - Phenotypic divergence and ecological speciation in mutualisms: effects of spatial structure and interaction intimacy
Grantee:Rafael Luís Galdini Raimundo
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 11/13054-6 - Natural selection and the structure, dynamics, and diversification of mutualistic assemblages
Grantee:Rafael Luís Galdini Raimundo
Support type: Scholarships in Brazil - Doctorate