{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,1]],"date-time":"2026-10-01T13:04:11Z","timestamp":1790859851847,"version":"4.1.0"},"reference-count":38,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2003,6,26]],"date-time":"2003-06-26T00:00:00Z","timestamp":1056585600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"name":"FONDECYT","award":["1990528\/1999"],"award-info":[{"award-number":["1990528\/1999"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J. Exp. Zool."],"published-print":{"date-parts":[[2003,7]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>\n                    Naturalized brown trout populations in Chile are a valuable genetic resource with aquaculture potential. The oogenesis of a three\u2010year\u2010old brown trout cultured population was studied in southern Chile. Gonadosomatic index (GSI), oocyte growth, gonadal microscopic characteristics, and plasma levels of estradiol\u201317\u03b2 (E2), testosterone (T), and 17\u03b1\u2013hydroxyprogesterone (17\u03b1\u2013HP) were measured bimonthly for a nine\u2010month period before spawning. The maximum GSI level (22%) was similar to that described for other salmonids, although it was reached in May, more than one month before the population started spawning. Oocyte growth increases strongly from January when diameter reaches more than 1 mm. The vitellogenic period (six\u2010seven months) is consistent with the long vitellogenesis, described for salmonid females maturing at three years old. E2 shows a slow increase from November, reaching its peak value in March (65.2\u00b10.7 ng\/ml), during maximal vitellogenic activity. T increases as oogenesis progresses, reaching a maximum of 90\u00b120 ng\/ml during May, and falling considerably during ovulation. Following a typical pattern of progestogens in salmonid oogenesis, 17\u03b1\u2013HP stays at basal levels during most of oogenesis, but experiences a strong surge (2.0\u00b10.4 ng\/ml) just before ovulation.\n                    <jats:italic>J. Exp. Zool. 298A:60\u201366, 2003.<\/jats:italic>\n                    \u00a9 2003 Wiley\u2010Liss, Inc.\n                  <\/jats:p>","DOI":"10.1002\/jez.a.10278","type":"journal-article","created":{"date-parts":[[2003,6,30]],"date-time":"2003-06-30T06:02:24Z","timestamp":1056952944000},"page":"60-66","source":"Crossref","is-referenced-by-count":17,"title":["Oogenesis and plasma levels of sex steroids in cultured females of brown trout (\n                    <i>Salmo trutta<\/i>\n                    linnaeus, 1758) in Chile"],"prefix":"10.1002","volume":"298A","author":[{"given":"Francisco","family":"Estay","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andr\u00e9s","family":"D\u00edaz","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rodrigo","family":"Pedrazza","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nelson","family":"Colihueque","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2003,6,26]]},"reference":[{"key":"e_1_2_1_2_1","unstructured":"AdeR.1989.Trout and salmon handbook. 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Servicio Nacional de Pesca N\u00b06."}],"container-title":["Journal of Experimental Zoology Part A: Comparative Experimental Biology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1002%2Fjez.a.10278","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/jez.a.10278","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,11,17]],"date-time":"2023-11-17T01:46:44Z","timestamp":1700185604000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/jez.a.10278"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2003,6,26]]},"references-count":38,"journal-issue":{"issue":"1","published-print":{"date-parts":[[2003,7]]}},"alternative-id":["10.1002\/jez.a.10278"],"URL":"https:\/\/doi.org\/10.1002\/jez.a.10278","archive":["Portico"],"relation":{},"ISSN":["1548-8969","1552-499X"],"issn-type":[{"value":"1548-8969","type":"print"},{"value":"1552-499X","type":"electronic"}],"subject":[],"published":{"date-parts":[[2003,6,26]]}}}