Results 31 to 40 of about 21,393 (266)
Identification and differential expression of piRNAs in the gonads of Amur sturgeon (Acipenser schrenckii) [PDF]
PeerJ, 2019 Objective Sturgeons are considered living fossils, and have a very high conservation and economic value. Studies on the molecular mechanism of sturgeon gonadal development and sex differentiation would not only aid in understanding vertebrate sex ...
Lihong Yuan +4 more
doaj +2 more sources
Progress in Fishery SciencesThe rare and endemic largemouth bronze gudgeon (Coreius guichenoti) inhabits the middle and upper reaches of the Yangtze River. It is a typical migratory river fish found in the vicinity of rapids.
Yu ZHAO +5 more
doaj +1 more source
Effects of different light intensities and photoperiods on growth, survival rate and yolk-sac volume changes of the Persian sturgeon (Acipenser persius) larvae [PDF]
بومشناسی آبزیان, 2016 The aim of this study was to assess the effect of different light intensities and photoperiods on growth, survival, and the yolk sac absorb of the Persian sturgeon, Acipenser persicus, larvae.
Rezvanollah Kazemi +4 more
doaj
Sensitivity of Lake Sturgeon population dynamics and genetics to demographic parameters [Powerpoint Slide] [PDF]
, 2007 Lake sturgeon Acipenser fulvescens restoration is a priority throughout the Great Lakes basin, where sturgeon have been reduced to less than 1% of historic levels due to habitat degradation, overharvest, and fragmentation of spawning populations.
Schueller, Amy M., Hayes, Daniel B.
core +1 more source
Scientific ReportsChinese sturgeon Dmrt gene family was identified and characterized for the first time. A total of 5 putative Dmrt genes were identified. The gene structure, conserved protein domain and the phylogenetic relationship of Dmrt gene family were ...
Yacheng Hu +8 more
doaj +1 more source
The Russian Academic journal, 2011 This article examines the miserable situation of destruction and Azov Seas Tsymlyansk in the last half century. Shows the history of the world's first preserved fish prostoranstva and lifestyle of the indigenous population of the Don - the Cossacks, who later became an example of environmental management.
openaire +1 more source
Business Strategy and the Environment, EarlyView.ABSTRACT The aim of this research is to verify whether institutional quality affects the relationship between green innovation and firm efficiency within the high‐tech manufacturing sectors. To estimate jointly the parameters of a stochastic frontier and the coefficients of a model explaining technical inefficiency, we employed the one‐step estimation ...
Mariarosaria Agostino +2 more
wiley +1 more source
Business Strategy and the Environment, EarlyView.ABSTRACT The growing frequency of global crises has intensified concerns regarding climate vulnerability and the resilience of global production systems. This study examines the heterogeneous effects of supply chain development and supply chain digitalisation on climate vulnerability across countries, while accounting for institutional and investment ...
Ziwei Li +4 more
wiley +1 more source
Business Strategy and the Environment, EarlyView.ABSTRACT Rare earth elements (REEs) are critical inputs for low‐carbon technologies, yet their supply chains remain highly concentrated and vulnerable. Although diversification is widely promoted as a strategy to enhance supply chain resilience, its feasibility in strategic material systems remains limited.
Klavdij Logožar
wiley +1 more source
Developmental Dynamics, EarlyView.Abstract Background Dentitions have diversified enormously during vertebrate evolution, involving reductions, modifications, or allocations to prey seizing and processing regions. A combination of ancient and novel features related to dental and oropharyngeal apparatuses is found in extant lineages of non‐teleost fishes, such as the gars.
Anna Pospisilova +4 more
wiley +1 more source