{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,13]],"date-time":"2026-05-13T19:41:21Z","timestamp":1778701281226,"version":"3.51.4"},"reference-count":36,"publisher":"Cambridge University Press (CUP)","issue":"2","license":[{"start":{"date-parts":[[2023,1,9]],"date-time":"2023-01-09T00:00:00Z","timestamp":1673222400000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/www.cambridge.org\/core\/terms"}],"content-domain":{"domain":["cambridge.org"],"crossmark-restriction":true},"short-container-title":["Zygote"],"published-print":{"date-parts":[[2023,4]]},"abstract":"<jats:title>Summary<\/jats:title><jats:p>This study aimed to evaluate the ploidy and survival of larvae resulting from crosses between tetraploid females and diploid males of yellowtail tetra <jats:italic>Astyanax altiparanae<\/jats:italic>, both females (three diploids and three tetraploids) and males (<jats:italic>n<\/jats:italic> = 3 diploids). Breeders were subjected to hormonal induction with pituitary gland extract from common carp fish (<jats:italic>Cyprinus carpio<\/jats:italic>). Females received two doses at concentrations of 0.3 and 3.0 mg\/kg <jats:sup>\u22121<\/jats:sup> body weight and at intervals of 6 h. Males were induced with a single dose of 3.0 mg\/kg <jats:sup>\u22121<\/jats:sup> applied simultaneously with the second dose in females. Oocytes from each diploid and tetraploid female were fertilized with semen from the same male, resulting in two crosses: cross 1 (diploid male and diploid female) and cross 2 (diploid male and tetraploid female). The procedures were performed with separate females (diploid and tetraploid) and diploid males for each repetition (<jats:italic>n<\/jats:italic> = 3). For ploidy determination, 60 larvae from each treatment were analyzed using flow cytometry and cytogenetic analyses. As expected, flow cytometry analysis showed that progenies from crosses 1 and 2 presented diploid and triploid individuals, respectively, with a 100% success rate. The same results were confirmed in the cytogenetic analysis, in which the larvae resulting from cross 1 had 50 metaphase chromosomes and those from cross 2 had 75 chromosomes. The oocytes have a slightly ovoid shape at the time of extrusion. Diploid oocytes had a size of 559 \u00b1 20.62 \u03bcm and tetraploid of 1025.33 \u00b1 30.91 \u03bcm. Statistical differences were observed between eggs from crosses 1 and 2 (<jats:italic>P<\/jats:italic> = 0.0130). No significant differences between treatments were observed for survival at the 2-cell stage (<jats:italic>P<\/jats:italic> = 0.6174), blastula (<jats:italic>P<\/jats:italic> = 0.9717), gastrula (<jats:italic>P<\/jats:italic> = 0.5301), somite (<jats:italic>P<\/jats:italic> = 0.3811), and hatching (<jats:italic>P<\/jats:italic> = 0.0984) stages. In conclusion, our results showed that tetraploid females of the yellowtail tetra <jats:italic>A. altiparanae<\/jats:italic> are fertile, present viable gametes after stripping and fertilization using the \u2018dry method\u2019, and may be used for mass production of triploids. This is the first report of these procedures within neotropical characins, and which can be applied in other related species of economic importance.<\/jats:p>","DOI":"10.1017\/s0967199422000569","type":"journal-article","created":{"date-parts":[[2023,1,9]],"date-time":"2023-01-09T08:22:44Z","timestamp":1673252564000},"page":"123-128","update-policy":"https:\/\/doi.org\/10.1017\/policypage","source":"Crossref","is-referenced-by-count":1,"title":["All-triploid offspring in the yellowtail tetra <i>Astyanax altiparanae<\/i> Garutti &amp; Britski 2000 (Teleostei, Characidae) derived from female tetraploid \u00d7 male diploid crosses"],"prefix":"10.1017","volume":"31","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5486-1007","authenticated-orcid":false,"given":"Andreoli Correia","family":"Alves","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"George Shigueki","family":"Yasui","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0515-3431","authenticated-orcid":false,"given":"Nivaldo Ferreira","family":"do Nascimento","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Paulo S\u00e9rgio","family":"Monzani","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5120-448X","authenticated-orcid":false,"given":"Jos\u00e9 Augusto","family":"Senhorini","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Matheus","family":"Pereira dos Santos","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"56","published-online":{"date-parts":[[2023,1,9]]},"reference":[{"key":"S0967199422000569_ref5","doi-asserted-by":"publisher","DOI":"10.1111\/raq.12092"},{"key":"S0967199422000569_ref28","doi-asserted-by":"publisher","DOI":"10.1016\/j.theriogenology.2017.12.013"},{"key":"S0967199422000569_ref21","doi-asserted-by":"publisher","DOI":"10.1111\/j.1749-7345.2005.tb00135.x"},{"key":"S0967199422000569_ref27","doi-asserted-by":"publisher","DOI":"10.1016\/j.aquaculture.2009.04.036"},{"key":"S0967199422000569_ref29","first-page":"101","article-title":"Production of all female rainbow trout, Oncorhynchus mykiss (Pisces, Salmonidae). 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