{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,26]],"date-time":"2026-02-26T15:12:04Z","timestamp":1772118724099,"version":"3.50.1"},"reference-count":24,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[2023,4,6]],"date-time":"2023-04-06T00:00:00Z","timestamp":1680739200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Journal of Morphology"],"published-print":{"date-parts":[[2023,5]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>\n                    This work reports on the structural characteristics of the respiratory gas bladder of the osteoglossiform fish\n                    <jats:italic>Heterotis niloticus<\/jats:italic>\n                    . The bladder\u2010vertebrae relationships are also analyzed. A slit\u2010shaped orifice in the mediodorsal pharyngeal wall is surrounded by a muscle sphincter and serves as a glottis\u2010like opening to the gas bladder. The dorsolateral internal surface of the gas bladder is lined by a parenchyma of highly vascularized trabeculae and septa displaying an alveolar\u2010like structure. The trabeculae contain, in addition to vessels, numerous eosinophils probably involved in immune responses. The air spaces are endowed with a thin exchange barrier indicating a good potential for respiratory gas exchange. The ventral wall of the gas bladder is a well\u2010vascularized membrane that exhibits an exchange barrier in the luminal face and an inner structure dominated by the presence of a layer of richly innervated smooth muscle. This is suggestive of an autonomous adjustability of the gas bladder ventral wall. The trunk vertebrae show large transverse processes (parapophyses) and numerous surface openings that lead into intravertebral spaces that become invaded by the bladder parenchyma. Curiously, the caudal vertebrae show a regular teleost morphology with neural and hemal arches, but have similar surface openings and intravertebral pneumatic spaces. The African Arowana hence rivals the freshwater butterfly fish\n                    <jats:italic>Pantodon<\/jats:italic>\n                    in its exceptional role of displaying postcranial skeletal pneumaticity outside of Archosauria. The possible significance of these findings is discussed.\n                  <\/jats:p>","DOI":"10.1002\/jmor.21584","type":"journal-article","created":{"date-parts":[[2023,3,28]],"date-time":"2023-03-28T14:16:16Z","timestamp":1680012976000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["The gas bladder of\n                    <i>Heterotis niloticus<\/i>\n                    (Cuvier, 1829)"],"prefix":"10.1002","volume":"284","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9543-2444","authenticated-orcid":false,"given":"Jos\u00e9 M.","family":"Icardo","sequence":"first","affiliation":[{"name":"Department of Anatomy and Cell Biology, Faculty of Medicine University of Cantabria Santander Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alessio","family":"Alesci","sequence":"additional","affiliation":[{"name":"Department of Chemical, Biological, Pharmaceutical and Environmental Sciences University of Messina Messina Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Michal","family":"Kuciel","sequence":"additional","affiliation":[{"name":"Poison Information Centre Jagiellonian University Medical College Cracow Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Krystyna","family":"Zuwala","sequence":"additional","affiliation":[{"name":"Department of Comparative Anatomy, Faculty of Biology, Institute of Zoology and Biomedical Research Jagellonian University Cracow Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Maria C.","family":"Guerrera","sequence":"additional","affiliation":[{"name":"Department of Veterinary Sciences, Polo Universitario dell'Annunziata University of Messina Messina Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Giacomo","family":"Zaccone","sequence":"additional","affiliation":[{"name":"Department of Biomedical and Dental Sciences and Morphofunctional Imaging, Polo Universitario dell'Annunziata University of Messina Messina Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2023,4,6]]},"reference":[{"key":"e_1_2_9_2_1","volume-title":"A textbook of histology","author":"Bloom W.","year":"1994"},{"key":"e_1_2_9_3_1","first-page":"259","article-title":"Remarkable changes in the vertebrae of perciform fish Scombrolabrax with notes on its anatomy and systematics","volume":"28","author":"Bond C. 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