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Functional similarity affects similarity in partner composition in flea-mammal networks
Ist Teil von
Parasitology research (1987), 2024, Vol.123 (5), p.203-203
Ort / Verlag
Berlin/Heidelberg: Springer Berlin Heidelberg
Erscheinungsjahr
2024
Link zum Volltext
Quelle
MEDLINE
Beschreibungen/Notizen
Functional signal
in an interaction network is a phenomenon in which species resembling each other in their traits interact with similar partners. We tested the
functional signal
concept in realm-specific and regional flea-host networks from four biogeographic realms and asked whether the species composition of (a) host spectra and (b) flea assemblages is similar between functionally similar flea and host species, respectively. Analogously to testing for phylogenetic signal, we applied Mantel tests to investigate the correlation between flea or host functional distances calculated from functional dendrograms and dissimilarities in sets of interacting partners. In all realm-specific networks, functionally similar fleas tended to exploit similar hosts often belonging to the same genus, whereas functionally similar hosts tended to harbour similar fleas, again often belonging to the same genus. The strength of realm-specific
functional signals
and the frequency of detecting a significant
functional signal
in the regional networks differed between realms. The frequency of detecting a significant
functional signal
in the regional networks correlated positively with the network size for fleas and with the number of hosts in a network for hosts. A
functional signal
in the regional networks was more frequently found for hosts than for fleas. We discuss the mechanisms behind the
functional signal
in both fleas and their hosts, relate geographic
functional signal
patterns to the historic biogeography of fleas and conclude that
functional signals
in the species composition of host spectra for fleas and of flea assemblages for hosts result from the interplay of evolutionary and ecological processes.