{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,12]],"date-time":"2026-07-12T04:58:41Z","timestamp":1783832321957,"version":"3.55.0"},"reference-count":49,"publisher":"Oxford University Press (OUP)","issue":"3","license":[{"start":{"date-parts":[[2024,7,4]],"date-time":"2024-07-04T00:00:00Z","timestamp":1720051200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/academic.oup.com\/journals\/pages\/open_access\/funder_policies\/chorus\/standard_publication_model"}],"funder":[{"DOI":"10.13039\/100005595","name":"University of California","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100005595","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2024,9,27]]},"abstract":"<jats:title>Synopsis<\/jats:title>\n               <jats:p>Functional novelties play important roles in creating new ways for organisms to access resources. In fishes, jaw protrusion has been attributed to the massive diversity of suction-based feeding systems, facilitating the dominant mode of prey capture in this group. Nearly all fishes that feed by suction use upper jaw protrusion, achieved by rotation of the mandible at its base, which then transmits forward motion to independently mobile upper jaw bones. In this study, by contrast, we explore an unusual form of lower jaw protrusion in the freshwater invertivore, Nannocharax fasciatus, enabled by a novel intramandibular joint (IMJ). We combine morphological, kinematic, and biomechanical data to show that the added mobility created by the IMJ influences the pattern of suction-based prey capture movements and contributes to lower jaw protrusion (increasing it by 25%, based on biomechanical modeling). Interestingly, the upper jaw bones are fused in N. fasciatus and rotate about a single fixed joint, like the lower jaws of most other suction feeding fishes. We suggest that this vertical inversion of the jaw protrusion mechanism for ventrally directed suction-feeding on benthic prey is a likely exaptation, as the IMJ is used for biting in related taxa. This work highlights the ability of novelties to facilitate ecological specialization by enabling new functional capabilities.<\/jats:p>","DOI":"10.1093\/icb\/icae097","type":"journal-article","created":{"date-parts":[[2024,7,3]],"date-time":"2024-07-03T12:32:55Z","timestamp":1720009975000},"page":"729-741","source":"Crossref","is-referenced-by-count":2,"title":["Suction Feeding Turned on Its Head: A Functional Novelty Facilitates Lower Jaw Protrusion"],"prefix":"10.1093","volume":"64","author":[{"given":"Christopher M","family":"Martinez","sequence":"first","affiliation":[{"name":"Department of Ecology and Evolutionary Biology, University of California , Irvine, CA 92697 ,","place":["USA"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rizelle Mae M","family":"Mazon","sequence":"additional","affiliation":[{"name":"Department of Ecology and Evolutionary Biology, University of California , Irvine, CA 92697 ,","place":["USA"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Melanie L J","family":"Stiassny","sequence":"additional","affiliation":[{"name":"Department of Ichthyology, American Museum of Natural History , 200 Central Park West , New York, NY 10024,","place":["USA"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"286","published-online":{"date-parts":[[2024,7,4]]},"reference":[{"key":"2024092712593596500_bib1","article-title":"Geomorph: software for geometric morphometric analyses","author":"Adams","year":"2021"},{"key":"2024092712593596500_bib2","doi-asserted-by":"crossref","first-page":"437","DOI":"10.1016\/j.jbiomech.2005.12.004","article-title":"Quantifying biomechanical motion using procrustes motion analysis","volume":"40","author":"Adams","year":"2007","journal-title":"J Biomech"},{"key":"2024092712593596500_bib3","doi-asserted-by":"crossref","first-page":"43","DOI":"10.1111\/j.1469-7998.1967.tb02865.x","article-title":"The functions and mechanisms of the protrusible upper jaws of some acanthopterygian fish","volume":"151","author":"Alexander","year":"1967","journal-title":"J Zool"},{"key":"2024092712593596500_bib4","doi-asserted-by":"crossref","first-page":"e77269","DOI":"10.1371\/journal.pone.0077269","article-title":"Are characiform fishes Gondwanan in origin? 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