Editing Mutualism (biology) (section)

===Service-resource relationships===
[[File:Impala mutualism with birds wide.jpg|thumb|The [[red-billed oxpecker]] eats ticks on the [[impala]]'s coat, in a [[cleaning symbiosis]].]]

Service-resource relationships are common. Three important types are [[pollination]], [[cleaning]] symbiosis, and [[zoochory]].

In pollination, a plant trades food resources in the form of [[nectar]] or [[pollen]] for the service of pollen dispersal. However, daciniphilous ''[[Bulbophyllum]]'' orchid species trade [[sex pheromone]] precursor or booster components via floral [[synomone]]s/attractants in a true mutualistic interactions with males of [[Dacini]] fruit flies (Diptera: Tephritidae: Dacinae).<ref>See also [[Attractant]] related to synomone; and references therein</ref><ref>{{cite journal |last1=Tan |first1=K.H. |last2=Nishida |first2=R. |title=Mutual reproductive benefits between a wild orchid, ''Bulbophyllum patens'', and Bactrocera fruit flies via a floral synomone |journal=Journal of Chemical Ecology |volume=26 |issue= 2|pages=533–546 |date=2000 |doi=10.1023/A:1005477926244 |bibcode=2000JCEco..26..533T }}</ref>

[[Phagophile]]s feed (resource) on [[ectoparasite]]s, thereby providing anti-pest service, as in [[cleaning symbiosis]].
''[[Elacatinus]]'' and ''[[Gobiosoma]]'', genera of [[Goby|gobies]], feed on ectoparasites of their clients while cleaning them.<ref>{{Cite journal|author1=M.C. Soares |author2=I.M. Côté |author3=S.C. Cardoso & R.Bshary |date=August 2008| title=The cleaning goby mutualism: a system without punishment, partner switching or tactile stimulation | journal =Journal of Zoology| volume =276 |issue =3 | pages =306–312 | doi=10.1111/j.1469-7998.2008.00489.x|url=http://doc.rero.ch/record/28974/files/Soares_Marta_C._-_The_cleaning_goby_mutualism_a_system_without_20120417.pdf }}</ref>

Zoochory is the dispersal of the seeds of plants by animals. This is similar to pollination in that the plant produces food resources (for example, fleshy fruit, overabundance of seeds) for animals that disperse the seeds (service). Plants may advertise these resources using colour<ref>{{Cite journal|last1=Lim|first1=Ganges|last2=Burns|first2=Kevin C.|date=2021-11-24|title=Do fruit reflectance properties affect avian frugivory in New Zealand?|url=https://doi.org/10.1080/0028825X.2021.2001664|journal=New Zealand Journal of Botany|volume=60 |issue=3 |pages=319–329|doi=10.1080/0028825X.2021.2001664|s2cid=244683146|issn=0028-825X}}</ref> and a variety of other fruit characteristics, e.g., scent. Fruit of the [[aardvark cucumber]] ''(Cucumis humifructus)'' is buried so deeply that the plant is solely reliant upon the [[Aardvark#Head|aardvark's keen sense of smell]] to detect its ripened fruit, extract, consume and then scatter its seeds;<ref>{{cite book|last1=van Rheede van Oudtshoorn|first1=Karen|last2=van Rooyen |first2=Margaretha W. |title=Dispersal Biology of Desert Plants|year=1998|publisher=Springer |isbn=978-3-540-64886-4 |chapter=Restriction of Dispersal Due to Reduction of Dispersal Structures |chapter-url=https://link.springer.com/chapter/10.1007/978-3-662-03561-0_6 |page=118|doi=10.1007/978-3-662-03561-0_6 |url=https://books.google.com/books?id=bdTfBfsl-DcC&q=aardvark|accessdate=2023-01-28}}</ref> ''C.&nbsp;humifructus''{{'}}s geographical range is thus restricted to that of the aardvark.

Another type is [[ant]] protection of [[aphid]]s, where the aphids trade [[sugar]]-rich [[Honeydew (secretion)|honeydew]] (a by-product of their mode of feeding on plant [[sap]]) in return for defense against [[predator]]s such as [[ladybug]]s.{{citation needed|date=June 2024}}