Physical and hormonal examination of Missouri River shovelnose sturgeon reproductive stage: a reference guide
- 23 July 2007
- journal article
- Published by Hindawi Limited in Journal of Applied Ichthyology
- Vol. 23 (4) , 382-401
Abstract
From May 2001 to June 2002 Wildhaber et al. (2005) conducted monthly sampling of Lower Missouri River shovelnose sturgeon (Scaphirhynchus platorynchus) to develop methods for determination of sex and the reproductive stage of sturgeons in the field. Shovelnose sturgeon were collected from the Missouri River and ultrasonic and endoscopic imagery and blood and gonadal tissue samples were taken. The full set of data was used to develop monthly reproductive stage profiles for S. platorynchus that could be compared to data collected on pallid sturgeon (Scaphirhynchus albus). This paper presents a comprehensive reference set of images, sex steroids, and vitellogenin (VTG, an egg protein precursor) data for assessing shovelnose sturgeon sex and reproductive stage. This reference set includes ultrasonic, endoscopic, histologic, and internal images of male and female gonads of shovelnose sturgeon at each reproductive stage along with complementary data on average 17-β estradiol, 11-ketotestosterone, VTG, gonadosomatic index, and polarization index.Keywords
This publication has 15 references indexed in Scilit:
- Estimation of gonad volume, fecundity, and reproductive stage of shovelnose sturgeon using sonography and endoscopy with application to the endangered pallid sturgeonJournal of Applied Ichthyology, 2007
- Determination of sex and maturity in Acipenser stellatus by using ultrasonographyJournal of Applied Ichthyology, 2002
- Plasma sex steroids and vitellogenin levels in stellate sturgeon (Acipenser stellatus Pallas) during spawning migration in the Danube RiverJournal of Applied Ichthyology, 2002
- Histopathological assessment of gonadal tissue in wild fishesFish Physiology and Biochemistry, 2002
- Life history and status of the shovelnose sturgeon, Scaphirhynchus platorynchusEnvironmental Biology of Fishes, 1997
- An overview of AcipenseriformesEnvironmental Biology of Fishes, 1997
- Vitellogenin Induction and Reduced Serum Testosterone Concentrations in Feral Male Carp (Cyprinus carpio) Captured near a Major Metropolitan Sewage Treatment PlantEnvironmental Health Perspectives, 1996
- Sturgeons and Paddlefishes: Threatened Fishes in Need of ConservationConservation Biology, 1993
- Sturgeon Fishes1993
- Gonadal morphology, enzyme histochemistry and plasma steroid levels during the annual reproductive cycle of male and female brown bullhead catfish, Ictalurus nebulosus LesueurJournal of Fish Biology, 1987