{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"institution":[{"name":"bioRxiv"}],"indexed":{"date-parts":[[2026,10,23]],"date-time":"2026-10-23T21:19:07Z","timestamp":1792790347034,"version":"4.5.0"},"posted":{"date-parts":[[2026,9,12]]},"group-title":"Ecology","reference-count":73,"publisher":"openRxiv","license":[{"start":{"date-parts":[[2026,9,12]],"date-time":"2026-09-12T00:00:00Z","timestamp":1789171200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/www.biorxiv.org\/about\/FAQ#license"}],"funder":[{"name":"National Institute of General Medical Sciences","award":["R35GM142938"],"award-info":[{"award-number":["R35GM142938"]}],"id":[{"id":"https:\/\/ror.org\/04q48ey07","id-type":"ROR","asserted-by":"crossref"}]},{"name":"Gordon and Betty Moore Foundation","award":["GMBF12120"],"award-info":[{"award-number":["GMBF12120"]}],"id":[{"id":"https:\/\/ror.org\/006wxqw41","id-type":"ROR","asserted-by":"crossref"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"accepted":{"date-parts":[[2026,9,12]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                <jats:p>\n                  Ecosystem functions can be regulated by biodiversity ranging from broad to narrow scales, including variation within a species. For most multicellular life, intraspecific variation is determined not only by an organism\u2019s phenotype and genotype, but also variation imparted by their microbiome. Here, we investigate how leaf decomposition in rivers is affected by phenotypic variation in plant secondary metabolites (PSMs) and antibiotic-induced variation within the gut microbiomes of aquatic macroinvertebrate decomposers. We found that consumption by\n                  <jats:italic>Dicosmoecus<\/jats:italic>\n                  caddisflies was inhibited by the presence of dietary PSMs from riparian\n                  <jats:italic>Alnus rubra<\/jats:italic>\n                  trees, irrespective of the state of their gut microbiome. We further compared consumption of diets prepared from 20 different local and non-local\n                  <jats:italic>A. rubra<\/jats:italic>\n                  trees. We found that antibiotic-treated and control caddisflies consumed similar amounts of diets containing local\n                  <jats:italic>A. rubra<\/jats:italic>\n                  PSMs. However, compared to caddisflies with an intact gut microbiome, antibiotic- treated caddisflies consumed less of non-local\n                  <jats:italic>A. rubra<\/jats:italic>\n                  diets. Thus, decomposition by caddisflies could be regulated by both host adaptation to local resources and bacterial-mediated digestion of non-local resources. Overall, our study suggests that gut microbiomes can facilitate adjustment of macroinvertebrate decomposers to novel plant phenotypes, which may arise from shifting spatial distributions of plants in response to global change.\n                <\/jats:p>","DOI":"10.64898\/2026.09.10.749941","type":"posted-content","created":{"date-parts":[[2026,9,12]],"date-time":"2026-09-12T12:15:13Z","timestamp":1789215313000},"source":"Crossref","is-referenced-by-count":0,"title":["The caddisfly gut microbiome contributes to the consumption of riparian leaf litter within rivers"],"prefix":"10.64898","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9926-7834","authenticated-orcid":false,"given":"Jonathan R.","family":"Dickey","sequence":"first","affiliation":[{"name":"University of California San Diego Department of Ecology, Behavior and Evolution La Jolla, California, USA, 93093"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dahlia A.","family":"Loomis","sequence":"additional","affiliation":[{"name":"University of California San Diego Department of Ecology, Behavior and Evolution La Jolla, California, USA, 93093"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andr\u00e9s Mauricio","family":"Caraballo-Rodr\u00edguez","sequence":"additional","affiliation":[{"name":"University of California San Diego Skaggs School of Pharmacy and Pharmaceutical Sciences La Jolla, California, 92093, USA"},{"name":"University of California San Diego Collaborative Mass Spectrometry Innovation Center Skaggs School of Pharmacy and Pharmaceutical Sciences La Jolla, California, 92093, USA"},{"name":"University of California San Diego Center for Microbiome Innovation La Jolla,California, 92093, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pieter C.","family":"Dorrestein","sequence":"additional","affiliation":[{"name":"University of California San Diego Skaggs School of Pharmacy and Pharmaceutical Sciences La Jolla, California, 92093, USA"},{"name":"University of California San Diego Collaborative Mass Spectrometry Innovation Center Skaggs School of Pharmacy and Pharmaceutical Sciences La Jolla, California, 92093, USA"},{"name":"University of California San Diego Center for Microbiome Innovation La Jolla,California, 92093, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sara L.","family":"Jackrel","sequence":"additional","affiliation":[{"name":"University of California San Diego Department of Ecology, Behavior and Evolution La Jolla, California, USA, 93093"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"54368","reference":[{"key":"2026091623102039000_2026.09.10.749941v1.1","doi-asserted-by":"publisher","DOI":"10.1890\/03-4019"},{"key":"2026091623102039000_2026.09.10.749941v1.2","doi-asserted-by":"publisher","DOI":"10.1073\/pnas.0908023107"},{"key":"2026091623102039000_2026.09.10.749941v1.3","doi-asserted-by":"publisher","DOI":"10.1126\/science.1128326"},{"key":"2026091623102039000_2026.09.10.749941v1.4","doi-asserted-by":"publisher","DOI":"10.1038\/s41559-017-0402-5"},{"key":"2026091623102039000_2026.09.10.749941v1.5","doi-asserted-by":"publisher","DOI":"10.1073\/pnas.1202319109"},{"key":"2026091623102039000_2026.09.10.749941v1.6","doi-asserted-by":"publisher","DOI":"10.1016\/j.cell.2017.09.016"},{"key":"2026091623102039000_2026.09.10.749941v1.7","doi-asserted-by":"publisher","DOI":"10.1111\/1365-2745.13042"},{"key":"2026091623102039000_2026.09.10.749941v1.8","doi-asserted-by":"publisher","DOI":"10.1016\/j.chom.2015.04.011"},{"key":"2026091623102039000_2026.09.10.749941v1.9","doi-asserted-by":"publisher","DOI":"10.1111\/j.1461-0248.2003.00562.x"},{"key":"2026091623102039000_2026.09.10.749941v1.10","doi-asserted-by":"publisher","DOI":"10.1016\/j.baae.2007.11.003"},{"key":"2026091623102039000_2026.09.10.749941v1.11","doi-asserted-by":"publisher","DOI":"10.1093\/jpe\/rtn002"},{"key":"2026091623102039000_2026.09.10.749941v1.12","doi-asserted-by":"publisher","DOI":"10.1073\/pnas.0909396107"},{"key":"2026091623102039000_2026.09.10.749941v1.13","doi-asserted-by":"publisher","DOI":"10.1146\/annurev.es.07.110176.001005"},{"key":"2026091623102039000_2026.09.10.749941v1.14","unstructured":"Palo RT , Robbins CT . 1991 Plant defenses against mammalian herbivory. 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