caa a22 4500 606227490 CHVBK 20210128101158.0 cr unu---uuuuu 210128e20150301xx s 000 0 eng 10.1007/s10641-014-0325-9 doi (NATIONALLICENCE)springer-10.1007/s10641-014-0325-9 First documented spawning and associated habitat conditions for green sturgeon in the Feather River, California [Elektronische Daten] [Alicia Seesholtz, Matthew Manuel, Joel Van Eenennaam] California's Sacramento River mainstem was previously the only known spawning area for the Southern Distinct Population Segment of North American green sturgeon, Acipenser medirostris. Our study provides the first documentation of green sturgeon spawning in the Feather River, a major tributary of the Sacramento River. Egg mats were used to sample two lower Feather River sites from April 12 to July 7, 2011, and we collected 13 green sturgeon eggs at one of those sites. Developmental stages of the eggs ranged from early gastrulation (Stage 15) to post-neurulation (Stage 27), which led us to estimate that four independent spawning events occurred between June 12 and June 19. Spawning occurred after a flow increase while water temperatures were at an optimum (<17.5°C) for eggs. Results suggest that the area near Thermalito Afterbay Outlet may be important green sturgeon spawning habitat and that the lower Feather River has the potential to provide a second production area of Southern Distinct Population Segment green sturgeon. It should be noted that 2011 was a wet water year and supplemental sampling is needed to understand if water-year type affects green sturgeon usage of the lower Feather River. Given this new information, future management decisions and water management strategies for the Feather River system should take green sturgeon life-history needs into consideration. Springer Science+Business Media Dordrecht, 2014 Green sturgeon nationallicence Spawning nationallicence Developmental stage nationallicence Feather River nationallicence Artificial substrate nationallicence Seesholtz Alicia Department of Water Resources, 3500 Industrial Boulevard, 95691, West Sacramento, CA, USA aut Manuel Matthew Pacific States Marine Fisheries Commission, 460 Glen Drive, 95966, Oroville, CA, USA aut Van Eenennaam Joel University of California, Davis, 2409 Meyer Hall, One Shields Avenue, 95616, Davis, CA, USA aut Environmental Biology of Fishes Springer Netherlands 98/3(2015-03-01), 905-912 0378-1909 98:3<905 2015 98 10641 https://doi.org/10.1007/s10641-014-0325-9 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10641-014-0325-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Seesholtz Alicia Department of Water Resources, 3500 Industrial Boulevard, 95691, West Sacramento, CA, USA aut NATIONALLICENCE 700 1- Manuel Matthew Pacific States Marine Fisheries Commission, 460 Glen Drive, 95966, Oroville, CA, USA aut NATIONALLICENCE 700 1- Van Eenennaam Joel University of California, Davis, 2409 Meyer Hall, One Shields Avenue, 95616, Davis, CA, USA aut NATIONALLICENCE 773 0- Environmental Biology of Fishes Springer Netherlands 98/3(2015-03-01), 905-912 0378-1909 98:3<905 2015 98 10641