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During a red tide event, forty-nine octopuses were sampled from a single locality in the Yucat\u00e1n Peninsula, M\u00e9xico, and classified into three size classes. Infection metrics were assessed, including prevalence, mean intensity, abundance, and total parasite count. The results revealed a significant positive association (r\u2009=\u20090.85) between host size and the number of\n                    <jats:italic>Prochristianella<\/jats:italic>\n                    sp., with larger octopuses exhibiting higher infection parameters. The findings suggest that\n                    <jats:italic>Prochristianella<\/jats:italic>\n                    sp. progressively accumulates in\n                    <jats:italic>O. maya<\/jats:italic>\n                    throughout its very early life, aligning with the general patterns observed in host-parasite interactions. This finding is consistent with previous studies, which suggest that larger hosts may accumulate higher parasite loads due to their prolonged exposure to infective stages and their trophic habits. These results highlight the ecological role of\n                    <jats:italic>O. maya<\/jats:italic>\n                    as an intermediate host in its marine ecosystem, underscoring the potential implications of parasitic infections on its health and population dynamics. This study represents a significant step toward understanding the ecology of parasites exploiting\n                    <jats:italic>O. maya<\/jats:italic>\n                    , providing insights into host-parasite relationships in marine cephalopods and offering a foundation for future research on the health and sustainability of this economically important species.\n                  <\/jats:p>","DOI":"10.1007\/s00436-025-08560-7","type":"journal-article","created":{"date-parts":[[2025,11,3]],"date-time":"2025-11-03T00:34:09Z","timestamp":1762130049000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Cestode parasite accumulation in Octopus maya: Insights from an opportunistic sampling during the 2022 red tide event"],"prefix":"10.1007","volume":"124","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9724-5658","authenticated-orcid":false,"given":"Linda Yacsiri G.","family":"Marmolejo-Guzm\u00e1n","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4024-7070","authenticated-orcid":false,"given":"Jhonny G.","family":"Garc\u00eda-Teh","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0004-1498-735X","authenticated-orcid":false,"given":"Karen Ascenet","family":"Arjona-Cambranes","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0004-2860-2406","authenticated-orcid":false,"given":"Guadalupe Anai","family":"May-Sosa","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3910-8305","authenticated-orcid":false,"given":"M. Leopoldina","family":"Aguirre-Macedo","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2025,11,3]]},"reference":[{"key":"8560_CR1","doi-asserted-by":"publisher","first-page":"263","DOI":"10.3897\/aiep.53.112253","volume":"53","author":"R Aguilar-Medrano","year":"2023","unstructured":"Aguilar-Medrano R, Vega-Cendejas ME, Chi Esp\u00ednola AA (2023) A checklist of dead fishes (Actinopterygii and Elasmobranchii) associated with the algal bloom event of the summer of 2022 on the Yucatan coasts, southern Gulf of Mexico. 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