First maturity and spawning periodicity of hatchery‐origin pallid sturgeon in the upper Missouri River above Fort Peck Reservoir, Montana

2018 ◽  
Vol 35 (1) ◽  
pp. 138-148 ◽  
Author(s):  
Luke M. Holmquist ◽  
Christopher S. Guy ◽  
Anne Tews ◽  
Molly A. H. Webb
Keyword(s):  
Missouri River ◽  
Pallid Sturgeon ◽  
Spawning Periodicity ◽  
First Maturity

scholarly journals Poststocking Movements and Habitat Use of Hatchery-Reared Juvenile Pallid Sturgeon in the Missouri River below Fort Randall Dam, South Dakota and Nebraska

2006 ◽  
Vol 135 (6) ◽  
pp. 1499-1511 ◽  
Author(s):  
George R. Jordan ◽  
Robert A. Klumb ◽  
Greg A. Wanner ◽  
Wayne J. Stancill
Keyword(s):  
Habitat Use ◽  
South Dakota ◽  
Missouri River ◽  
Pallid Sturgeon

scholarly journals Ecological Requirements for Pallid Sturgeon Reproduction and Recruitment in the Lower Missouri River: A Research Synthesis 2005-08

2009 ◽  
Author(s):  
Aaron J. DeLonay ◽  
Robert B. Jacobson ◽  
Diana M. Papoulias ◽  
Darin G. Simpkins ◽  
Mark L. Wildhaber ◽  
...  
Keyword(s):  
Missouri River ◽  
Research Synthesis ◽  
Ecological Requirements ◽  
Pallid Sturgeon

Updated assessment of hatchery‐reared pallid sturgeon (Forbes & Richardson, 1905) survival in the lower Missouri River

2015 ◽  
Vol 32 (1) ◽  
pp. 3-10 ◽  
Author(s):  
K. D. Steffensen ◽  
L. A. Powell ◽  
S. M. Stukel ◽  
K. R. Winders ◽  
W. J. Doyle
Keyword(s):  
Missouri River ◽  
Pallid Sturgeon

Sexual Maturity, Spawning Periodicity and Fecundity of Obtuse Barracuda Sphyraena obtusata (Cuvier, 1829) along Karnataka Coast, Southeastern Arabian Sea

2021 ◽  
Author(s):  
M.M. Meshram ◽  
Mridula Rajesh ◽  
K.M. Rajesh ◽  
N.K. Suyan
Keyword(s):  
Gonadosomatic Index ◽  
Management Strategies ◽  
Gravimetric Method ◽  
Reproductive Traits ◽  
Breeding Period ◽  
Southeastern Arabian Sea ◽  
Spawning Periodicity ◽  
Gravid Females ◽  
First Maturity ◽  
Management And Conservation

Background: The success or failure of spawning in any population affects the fishery. Hence, studies on spawning, maturation, fecundity and length at first maturity become essential in drafting management strategies. The detailed information on reproductive traits of Sphyraena obtusata will be helpful in sustainable management and conservation in the study area. Methods: Three hundred and fifty five specimens of S. obtusata were collected fortnightly from Mangaluru and Malpe fishing harbors during August 2019 to March 2020. Maturity of gonads was examined by macroscopic and histological investigations. Spawning periodicity was worked out based on maturity stages and seasonal gonadosomatic index. Gravimetric method of analysis was employed to evaluate the fecundity from randomly collected samples of gravid females. Result: Overall sex ratio revealed that the population had significantly higher (p less than 0.05, X2 test) proportion of females than males. The length at 50% maturity (Lm50) for females and males was estimated at 21.1 and 21.5 cm respectively. The gonadosomatic index (GSI) and the availability of matured individuals for both the sexes in various percentage indicated a prolonged breeding period from October to March with peaks in November and December. The absolute fecundity varied from 91,942 eggs (20.0 cm TL) to 1,34,445 eggs (27.0 cm TL) with an average of 1,12,878 ± 2,984 hydrated oocytes per female.

scholarly journals Missouri River pallid sturgeon inventory.

1997 ◽  
Author(s):  
William M. Gardner ◽  
Keyword(s):  
Missouri River ◽  
Pallid Sturgeon

scholarly journals Ecological requirements for pallid sturgeon reproduction and recruitment in the Missouri River: annual report 2011

2014 ◽  
Author(s):  
Aaron J. DeLonay ◽  
Robert B. Jacobson ◽  
Kimberly A. Chojnacki ◽  
Mandy L. Annis ◽  
P. J. Braaten ◽  
...  
Keyword(s):  
Annual Report ◽  
Missouri River ◽  
Ecological Requirements ◽  
Pallid Sturgeon

scholarly journals Size-Dependent Trophic Patterns of Pallid Sturgeon and Shovelnose Sturgeon in a Large River System

2013 ◽  
Vol 4 (1) ◽  
pp. 41-52 ◽  
Author(s):  
William E. French ◽  
Brian D. S. Graeb ◽  
Katie N. Bertrand ◽  
Steven R. Chipps ◽  
Robert A. Klumb
Keyword(s):  
South Dakota ◽  
Trophic Position ◽  
Fork Length ◽  
Missouri River ◽  
River System ◽  
Large River ◽  
Diet Shift ◽  
Fish Prey ◽  
Shovelnose Sturgeon ◽  
Pallid Sturgeon

Abstract This study compared patterns of δ15N and δ13C enrichment of pallid sturgeon Scaphirhynchus albus and shovelnose sturgeon S. platorynchus in the Missouri River, United States, to infer their trophic position in a large river system. We examined enrichment and energy flow for pallid sturgeon in three segments of the Missouri River (Montana/North Dakota, Nebraska/South Dakota, and Nebraska/Iowa) and made comparisons between species in the two downstream segments (Nebraska/South Dakota and Nebraska/Iowa). Patterns in isotopic composition for pallid sturgeon were consistent with gut content analyses indicating an ontogenetic diet shift from invertebrates to fish prey at sizes of >500-mm fork length (FL) in all three segments of the Missouri River. Isotopic patterns revealed shovelnose sturgeon did not experience an ontogenetic shift in diet and used similar prey resources as small (<500-mm FL) pallid sturgeon in the two downstream segments. We found stable isotope analysis to be an effective tool for evaluating the trophic position of sturgeons within a large river food web.

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