{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,8]],"date-time":"2026-03-08T16:56:57Z","timestamp":1772989017776,"version":"3.50.1"},"reference-count":77,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2025,4,27]],"date-time":"2025-04-27T00:00:00Z","timestamp":1745712000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2025,4,27]],"date-time":"2025-04-27T00:00:00Z","timestamp":1745712000000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"funder":[{"DOI":"10.13039\/501100006769","name":"Russian Science Foundation","doi-asserted-by":"publisher","award":["23\u201024\u201000419"],"award-info":[{"award-number":["23\u201024\u201000419"]}],"id":[{"id":"10.13039\/501100006769","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Integr. Zool."],"published-print":{"date-parts":[[2026,1]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    Parasites within the host body can occupy similar ecological niches and, therefore, compete for resources. Similarly to macroecological environments, within\u2010host habitats often provide unequal access to resources for different parasitic species. Parasites that live closer to the source of nutrients likely \u201cintercept\u201d resources, thus inhibiting the growth of \u201cdownstream\u201d competitors. The eyes of vertebrates are an example of such asymmetric habitats, as lenses have priority access to nutrients over the vitreous humor. However, parasitic interactions in asymmetric environments have been rarely purposefully examined. We experimentally infected fish with lens\u2010 and vitreous\u2010dwelling parasites (\n                    <jats:italic>Diplostomum pseudospathaceum<\/jats:italic>\n                    and\n                    <jats:italic>Tylodelphys clavata<\/jats:italic>\n                    , respectively) to compare their infection success and growth in the presence\/absence of each other. We found evidence of antagonistic interactions between parasites during the infection process and their growth within hosts. Each parasite species decreased the infection success of the other to a similar extent. Importantly, in accordance with our initial hypothesis, interactions between the parasites during the growth phase were asymmetric. In the presence of\n                    <jats:italic>D. pseudospathaceum<\/jats:italic>\n                    living closer to the nutrient source (in the lens), vitreous\u2010dwelling\n                    <jats:italic>T. clavata<\/jats:italic>\n                    grew slower than in monoinfections. In contrast, the presence of\n                    <jats:italic>T. clavata<\/jats:italic>\n                    , the \u201cdownstream\u201d parasite, did not influence the growth of the\n                    <jats:italic>D. pseudospathaceum<\/jats:italic>\n                    . Our results highlight how within\u2010host interactions and spatial heterogeneity affect the infection success of parasites and the size structure of infracommunities. We emphasize that such \u201cinfraecological\u201d considerations should be considered when studying parasitic communities since within\u2010host ecological interactions can influence infection dynamics and virulence.\n                  <\/jats:p>","DOI":"10.1111\/1749-4877.12991","type":"journal-article","created":{"date-parts":[[2025,4,27]],"date-time":"2025-04-27T22:20:13Z","timestamp":1745792413000},"page":"79-88","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Within\u2010Host \u201cInfraecology\u201d: Asymmetric Interactions Between Two Co\u2010infecting Eye Parasites"],"prefix":"10.1111","volume":"21","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1525-6557","authenticated-orcid":false,"given":"Mikhail","family":"Gopko","sequence":"first","affiliation":[{"name":"A.N. 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