{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,10]],"date-time":"2026-02-10T19:13:13Z","timestamp":1770750793588,"version":"3.50.0"},"reference-count":47,"publisher":"Cambridge University Press (CUP)","issue":"3","license":[{"start":{"date-parts":[[2025,8,19]],"date-time":"2025-08-19T00:00:00Z","timestamp":1755561600000},"content-version":"unspecified","delay-in-days":79,"URL":"https:\/\/www.cambridge.org\/core\/terms"}],"content-domain":{"domain":["cambridge.org"],"crossmark-restriction":true},"short-container-title":["Zygote"],"published-print":{"date-parts":[[2025,6]]},"abstract":"<jats:title>Summary<\/jats:title>\n                  <jats:p>In this study, we describe the ovarian structure and oogenesis up to the final maturation of oocytes of Hypancistrus seideli. A total of sixty females were used for gonadal analysis and subsequently submitted to light and scanning electron microscopy analyses. Four maturation stages were defined: immature, maturing, mature, and spawned. The oocytes were classified into four stages (I\u2013IV), and the presence of atretic oocytes and post-ovulatory follicles was demonstrated. During oocyte development, changes were observed in color, size, and shape, as well as in the formation of the follicular complex. These results may support reproductive management in captivity, since the species has great commercial importance in the international ornamental fish market and lacks established reproductive protocols in aquaculture. To our knowledge, this is the first morphological characterization of oogenesis in this species, providing original and detailed data that may contribute to the development of captive breeding protocols and to reducing pressure on natural stocks.<\/jats:p>","DOI":"10.1017\/s0967199425100087","type":"journal-article","created":{"date-parts":[[2025,8,19]],"date-time":"2025-08-19T06:16:59Z","timestamp":1755584219000},"page":"179-185","update-policy":"https:\/\/doi.org\/10.1017\/policypage","source":"Crossref","is-referenced-by-count":1,"title":["Ovarian structure and oogenesis in King Tiger Pleco, L333,\n                    <i>Hypancistrus seideli<\/i>\n                    , (Siluriformes: Loricariidae) from the Amazon region"],"prefix":"10.1017","volume":"33","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2296-0902","authenticated-orcid":false,"given":"Ivana Kerly da Silva","family":"Viana","sequence":"first","affiliation":[{"name":"Institute of Biological Sciences, Federal University of Par\u00e1"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Iann Leonardo Pinheiro","family":"Monteiro","sequence":"additional","affiliation":[{"name":"Federal University of Par\u00e1"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ryuller Gama","family":"Abreu","sequence":"additional","affiliation":[{"name":"Institute of Biological Sciences, Federal University of Par\u00e1"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Maria Auxiliadora Pantoja","family":"Ferreira","sequence":"additional","affiliation":[{"name":"Institute of Biological Sciences, Federal University of Par\u00e1"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Leandro Melo de","family":"Sousa","sequence":"additional","affiliation":[{"name":"Federal University of Par\u00e1"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rossineide Martins da","family":"Rocha","sequence":"additional","affiliation":[{"name":"Institute of Biological Sciences, Federal University of Par\u00e1"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"56","published-online":{"date-parts":[[2025,8,19]]},"reference":[{"key":"S0967199425100087_ref27","doi-asserted-by":"publisher","DOI":"10.2960\/J.v33.a2"},{"key":"S0967199425100087_ref50","doi-asserted-by":"publisher","DOI":"10.1016\/j.heliyon.2023.e16204"},{"key":"S0967199425100087_ref12","doi-asserted-by":"publisher","DOI":"10.1111\/azo.12378"},{"key":"S0967199425100087_ref38","unstructured":"Roman, A.P.O. 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Universidade Federal do Par\u00e1, Graduate Program in Aquatic Ecology and Fishing, Bel\u00e9m, Par\u00e1, Brazil."},{"key":"S0967199425100087_ref52","doi-asserted-by":"publisher","DOI":"10.1126\/science.aac7082"},{"key":"S0967199425100087_ref51","doi-asserted-by":"publisher","DOI":"10.1093\/icb\/21.2.325"},{"key":"S0967199425100087_ref54","doi-asserted-by":"publisher","DOI":"10.1590\/1982-0224-2024-00080"},{"key":"S0967199425100087_ref6","doi-asserted-by":"publisher","DOI":"10.1002\/jmor.21440"},{"key":"S0967199425100087_ref4","doi-asserted-by":"publisher","DOI":"10.1089\/zeb.2015.1213"},{"key":"S0967199425100087_ref17","doi-asserted-by":"publisher","DOI":"10.1111\/jfb.15139"},{"key":"S0967199425100087_ref7","doi-asserted-by":"publisher","DOI":"10.3391\/bir.2016.5.3.09"},{"key":"S0967199425100087_ref25","doi-asserted-by":"publisher","DOI":"10.1111\/jfb.13735"},{"key":"S0967199425100087_ref39","doi-asserted-by":"publisher","DOI":"10.1080\/23308249.2015.1053560"},{"key":"S0967199425100087_ref13","doi-asserted-by":"publisher","DOI":"10.1590\/S1679-62252010000400008"},{"key":"S0967199425100087_ref34","doi-asserted-by":"publisher","DOI":"10.1111\/are.15047"},{"key":"S0967199425100087_ref48","doi-asserted-by":"publisher","DOI":"10.1038\/s41598-018-32117-7"},{"key":"S0967199425100087_ref53","doi-asserted-by":"publisher","DOI":"10.7755\/FB.116.2.4"},{"key":"S0967199425100087_ref23","doi-asserted-by":"publisher","DOI":"10.1002\/jmor.10931"},{"key":"S0967199425100087_ref30","first-page":"71","article-title":"Gonadal maturation and histological observations of S. curvifrons in River Jhelum Kashmir","volume":"53","author":"Qadri","year":"2019","journal-title":"Indian Journal of Animal Research"},{"key":"S0967199425100087_ref28","doi-asserted-by":"publisher","DOI":"10.1002\/9781119259886.ch1"},{"key":"S0967199425100087_ref41","first-page":"e61","article-title":"Histological evidence of multiple spawning in wild female Japanese eel anguilla japonica","volume":"60","author":"Shimizu","year":"2021","journal-title":"Zoological Studies"},{"key":"S0967199425100087_ref44","doi-asserted-by":"publisher","DOI":"10.1007\/s10641-017-0604-3"},{"key":"S0967199425100087_ref40","first-page":"170","article-title":"Histological observations on the oocyte development in the Picnic seabream, Acanthopagrus berda (Forssk\u00e5l 1775)","volume":"51","author":"Shilta","year":"2022","journal-title":"Indian Journal of Geo Marine Sciences"},{"key":"S0967199425100087_ref37","first-page":"218","article-title":"Reproductive biology of Pseudotocinclus tietensis (Siluriformes: Loricariidae: Hypoptopomatinae), a threatened fish species","volume":"5","author":"Rodrigues-Filho","year":"2017","journal-title":"International Journal of Aquatic Biology"},{"key":"S0967199425100087_ref15","doi-asserted-by":"publisher","DOI":"10.1007\/s10641-014-0256-5"},{"key":"S0967199425100087_ref33","volume-title":"The Physiology of Fishes","author":"Redding","year":"1993"},{"key":"S0967199425100087_ref42","doi-asserted-by":"publisher","DOI":"10.1016\/j.gecco.2021.e01570"},{"key":"S0967199425100087_ref45","doi-asserted-by":"publisher","DOI":"10.1111\/j.1095-8649.2000.tb00275.x"},{"key":"S0967199425100087_ref46","doi-asserted-by":"publisher","DOI":"10.1016\/j.aaf.2020.09.004"},{"key":"S0967199425100087_ref22","doi-asserted-by":"publisher","DOI":"10.5296\/ast.v8i2.17102"},{"key":"S0967199425100087_ref47","doi-asserted-by":"publisher","DOI":"10.1134\/S0032945222010027"},{"key":"S0967199425100087_ref11","first-page":"193","article-title":"Fecundity of the Hypostomus affinis (Siluriformes, Loricariidae) in the Lajes Reservoir, Rio de Janeiro, Brazil","volume":"50","author":"Duarte","year":"2002","journal-title":"Revista de Biologia Tropical"},{"key":"S0967199425100087_ref9","doi-asserted-by":"publisher","DOI":"10.1002\/jmor.20945"},{"key":"S0967199425100087_ref19","doi-asserted-by":"publisher","DOI":"10.1111\/jfb.12432"},{"key":"S0967199425100087_ref43","first-page":"178","article-title":"Studies on gonad histology and length at first maturity of the rainbow trout Oncorhynchus mykiss Walbaum, 1792 (Salmoniformes: Salmonidae) from Kashmir","volume":"49","author":"Wali","year":"2022","journal-title":"Indian Journal of Ecology"},{"key":"S0967199425100087_ref29","doi-asserted-by":"publisher","DOI":"10.1017\/S0967199409990165"},{"key":"S0967199425100087_ref18","doi-asserted-by":"publisher","DOI":"10.1002\/9781118752739"},{"key":"S0967199425100087_ref20","unstructured":"Live Aquaria. 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