{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,20]],"date-time":"2026-02-20T23:42:04Z","timestamp":1771630924790,"version":"3.50.1"},"reference-count":25,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2020,9,10]],"date-time":"2020-09-10T00:00:00Z","timestamp":1599696000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/501100000646","name":"Japan Society for the Promotion of Science London","doi-asserted-by":"publisher","award":["Grant\u2010in\u2010Aid for Challenging Exploratory Research"],"award-info":[{"award-number":["Grant\u2010in\u2010Aid for Challenging Exploratory Research"]}],"id":[{"id":"10.13039\/501100000646","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Anat Histol Embryol"],"published-print":{"date-parts":[[2021,1]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p><jats:italic>Xenotoca eiseni<\/jats:italic> is a viviparous teleost belonging to the family Goodeidae. Here, we report histological observations of the reproductive organs in an adult male, an adult female, a pregnant female with intraovarian embryo and an extracted embryo of <jats:italic>X.\u00a0eiseni<\/jats:italic>. High\u2010resolution images of haematoxylin\u2013eosin\u2010stained sagittal sections revealed the detailed structure of gonads, gametes and reproductive components of the mother\u2013embryo relationship. In the male, mature spermatozoa in the epididymis formed sperm packages. In the female, oogenesis proceeded asynchronously in the ovarian wall, and various stages of oocytes were observed in single ovary. In both sexes, genital openings were located between the anus and anal fin. Developing embryos were observed in an ovary of the pregnant female. Fine structures of components of the mother\u2010to\u2010embryo nutrient supply, ovarian septum and trophotaenia were observed in the pregnant ovary. An immature gonad prior to gamete formation was identified in the extracted embryo. With the aim of supporting the development and extension of studies on this viviparous teleost, we have shared our histological images as raw data in an open online archive, the 'NAGOYA repository (<jats:ext-link xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" xlink:href=\"http:\/\/hdl.handle.net\/2237\/00032456\">http:\/\/hdl.handle.net\/2237\/00032456<\/jats:ext-link>)'. Our goal is a comprehensive understanding of the viviparous system in fish using both histological observation and molecular biology methods including genomics and proteomics.<\/jats:p>","DOI":"10.1111\/ahe.12614","type":"journal-article","created":{"date-parts":[[2021,1,22]],"date-time":"2021-01-22T22:50:21Z","timestamp":1611355821000},"page":"161-168","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Histological observation of the reproductive system in a viviparous teleost <i>Xenotoca eiseni<\/i> Rutter 1896 (Cyprinodontiformes: Goodeidae)"],"prefix":"10.1111","volume":"50","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0138-5366","authenticated-orcid":false,"given":"Atsuo","family":"Iida","sequence":"first","affiliation":[{"name":"Department of Animal Sciences Graduate School of Bioagricultural Sciences Nagoya University  Nagoya Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jumpei","family":"Nomura","sequence":"additional","affiliation":[{"name":"Department of Animal Sciences Graduate School of Bioagricultural Sciences Nagoya University  Nagoya Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3936-7737","authenticated-orcid":false,"given":"Eiichi","family":"Hondo","sequence":"additional","affiliation":[{"name":"Department of Animal Sciences Graduate School of Bioagricultural Sciences Nagoya University  Nagoya Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2020,9,10]]},"reference":[{"key":"e_1_2_9_2_1","doi-asserted-by":"publisher","DOI":"10.1177\/003591576806111P202"},{"key":"e_1_2_9_3_1","doi-asserted-by":"publisher","DOI":"10.1002\/jmor.20272"},{"key":"e_1_2_9_4_1","doi-asserted-by":"publisher","DOI":"10.1152\/physrev.00040.2011"},{"key":"e_1_2_9_5_1","first-page":"147","volume-title":"Viviparous fishes","author":"Greven H.","year":"2005"},{"key":"e_1_2_9_6_1","doi-asserted-by":"publisher","DOI":"10.1002\/jmor.1051560306"},{"key":"e_1_2_9_7_1","first-page":"33","article-title":"Uptake of ferritin by the trophotaeniae of the goodeid fish, Ameca splendens Miller and Fitzsimons 1971 (Teleostei, Cyprinodontiformes)","volume":"42","author":"Grosse\u2010Wichtrup L.","year":"1985","journal-title":"Cytobios"},{"key":"e_1_2_9_8_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1439-0531.2011.01862.x"},{"key":"e_1_2_9_9_1","doi-asserted-by":"publisher","DOI":"10.1073\/pnas.1913012116"},{"key":"e_1_2_9_10_1","doi-asserted-by":"publisher","DOI":"10.1038\/srep07855"},{"key":"e_1_2_9_11_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00227-010-1616-0"},{"key":"e_1_2_9_12_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.cbpa.2018.01.006"},{"key":"e_1_2_9_13_1","doi-asserted-by":"publisher","DOI":"10.1002\/jez.1402360207"},{"key":"e_1_2_9_14_1","doi-asserted-by":"publisher","DOI":"10.1002\/jmor.1051970206"},{"key":"e_1_2_9_15_1","volume-title":"Ecology and evolution of livebearing fishes (Poeciliidae)","author":"Meffe G. 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