The Russian sturgeon (Acipenser gueldenstaedtii) species is in high demand owing to its valuable caviar. Therefore, it danger of extinction. Since the reaches sexual maturity late life cycle, this has a economic cost for farmers. However, can be reduced with an environmentally friendly system called biofloc technology. This study compared growth performance and health indicators groups using di...

Aim. The aim of this study was to conduct an analysis long‐term changes in the number sturgeon populations and its relationship with fishing regime current state Ural River basin, as well develop measures for conservation restoration their resources. Discussion. Six species inhabit waters basin: Huso huso Linnaeus, 1758; Acipenser gueldenstaedtii Brandt & Ratzeburg, 1833; persicus Borodin, ...

Abstract Sturgeon populations are declining worldwide and the target of extensive conservation efforts. Addressed in several pieces legislation, sturgeons have received considerable attention as flagship or umbrella species. Despite need for a better understanding distribution population status, use traditional sampling methods failed past, thereby hampering reliable assessments, prerequisite c...

The associations were quantified between daily and interannual variation in the timing of a closed population of lake sturgeon Acipenser fulvescens migration and arrival at spawning sites with stream environmental and lunar covariates. Spawning data were gathered from 1262 fish in Black Lake, Michigan 2001 to 2008 and by video monitoring 2000 to 2002. Sex-specific variation in responses to exte...