{"pk":62881,"title":"A Qualitative Comparison of Spawning Behavior between Cultured and Wild Delta Smelt (Hypomesus transpacificus)","subtitle":null,"abstract":"For many imperiled species, comparisons between wild and cultured populations are invaluable for informing conservation measures, though opportunities to do so may be rare. In this study, we asked whether spawning between and among wild and cultured Delta Smelt varies in terms of behavior or resulting egg fertilization success. We conducted two laboratory experiments in which we allowed wild females to spawn with wild males (wild × wild) and cultured females to spawn with wild males (cultured × wild). Due to small sample sizes, we qualitatively compared our results to published studies of all cultured Delta Smelt (cultured × cultured). Across all three groups, Delta Smelt exhibited spawns that were similar in sequence and manner, varied widely in diel timing, and occurred predominantly between a single female and one or two males. Egg fertilization success was higher in wild × wild trials than in cultured × wild ones, but both fell within the wide range observed among cultured × cultured fish. Thus, spawning was generally similar between cultured and wild Delta Smelt, whether they were in same- or mixed-origin groups. These findings provide rare insight into the spawning behavior of wild Delta Smelt and inform ongoing conservation efforts.","language":"en","license":{"name":"Creative Commons Attribution 4.0","short_name":"CC BY 4.0","text":"Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.\n\nNo additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.","url":"https://creativecommons.org/licenses/by/4.0"},"keywords":[{"word":"spawning, Delta Smelt, behavior, reproduction, cultured, hatchery"}],"section":"Research Article","is_remote":true,"remote_url":"https://escholarship.org/uc/item/5f4431hs","frozenauthors":[{"first_name":"Yi-Jiun Jean","middle_name":"","last_name":"Tsai","name_suffix":"","institution":"Fish Conservation and Culture Laboratory Department of Biological and Agricultural Engineering\nUniversity of California, Davis\nDiscovery Bay, CA 94505 USA","department":""},{"first_name":"Samantha","middle_name":"N.","last_name":"Chase","name_suffix":"","institution":"Fish Conservation and Culture Laboratory Department of Biological and Agricultural Engineering\nUniversity of California, Davis\nDiscovery Bay, CA 94505 USA","department":""},{"first_name":"Evan","middle_name":"W.","last_name":"Carson","name_suffix":"","institution":"US Fish and Wildlife Service\nSan Francisco Bay-Delta Fish and Wildlife Office\nSacramento, CA 95814 USA","department":""},{"first_name":"Leanna","middle_name":"","last_name":"Zweig","name_suffix":"","institution":"US Fish and Wildlife Service\nSan Francisco Bay-Delta Fish and Wildlife Office\nSacramento, CA 95814 USA","department":""},{"first_name":"Tien-Chieh","middle_name":"","last_name":"Hung","name_suffix":"","institution":"Fish Conservation and Culture Laboratory Department of Biological and Agricultural Engineering\nUniversity of California, Davis\nDiscovery Bay, CA 94505 USA","department":""}],"date_submitted":"2023-08-28T08:46:12-07:00","date_accepted":"2023-08-28T08:46:12-07:00","date_published":"2023-09-25T00:00:00-07:00","render_galley":null,"galleys":[{"label":"","type":"pdf","path":"https://journalpub.escholarship.org/jmie_sfews/article/62881/galley/48566/download/"}]}