Production traits and fertility of reciprocal hybrids between Argopecten irradians irradians and A.i.concentricus

The two bay scallop subspecies,Argopecten irradians irradians(NN)and A.i.concentricus(SS),are fast growing and major cultured bivalves in China.However,their relatively small sizes and decreasing production traits caused by long-term inbreeding have been major concerns to the industry in the last two decades.Hybridization between the two bay scallop subspecies may provide a new approach to breed a new variety with superior production traits for the industry.For this end,in this study,we hybridized the two bay scallop subspecies in order to obtain a new strain that incorporates the genes of both subspecies.No significant difference was found in fertilization rate,hatching rate and metamorphosis rate between the purebred and crossbred cohorts(NN♀×SS♂,denoted as NS;SS♀×NN♂,denoted as SN).Both mating strategy(intra-vs.inter-population crosses)and egg origin had significant effects on growth and survival at the larval stage.Heterosis was observed in the crossbred and was more pronounced in older stages.Genetic diversity of the reciprocal hybrids,especially that of SN,was increased compared with the purebred cohorts.Almost all hybrids were completely fertile and able to reproduce by selffertilization or by backcrossing with either parent.Apparently,male sterile individuals whose gonads were fully occupied by the ovary part at mature stage were found in the hybrids for the first time.The hybrids,especially SN,may provide precious germplasm resources for the production of ternary hybrids with the Peruvian scallop,A.purpuratus.

Numerical Examination of Free Convection Flow of Casson Ternary Hybrid Nanofluid across Magnetized Stretching Sheet Impacted by Newtonian Heating

In current study,the influence of magnetic field(MHD)on heat transfer of natural convection boundary layer flow in Casson ternary hybrid nanofluid past a stretching sheet is studied using numerical simulation.The Newtonian heating boundary conditions that depend on the temperature and velocity terms are taken into this investigation.The particular dimensional governing equations,for the studied problem,are converted to the system of partial differential equations utilizing adequate similarity transformation.Consequently,the system of equations is numerically solved using well-known Kellar box numerical techniques.The obtained numerical results are in excellent approval with previous literature results.The existence of types for composite ternary nanoparticles,which as alumina Al2O3,copper oxide CuO,and silver Ag or copper Cu,as well as water H2O which is considered an essential fluid,are examined.The physical features,such as temperature,velocity,local skin friction coefficient,and local Nusselt number are explored with the variation of MHD Casson ternary hybrid nanofluids parameters and displayed graphically and tabularly in the present study.The numerical outcomes exhibit that when the conjugate parameter values rise,the temperature and local Nusselt number increase,however they decrease as the Casson parameter is reduced.

Highly ordered Janus CdS-Au-TiO_(2) Z-scheme structure with high efficiency in photocatalysis

Precise structural control had attracted tremendous interest in nanosynthesis due to its great importance in tailoring the physical properties of nanomaterials.Here we report the synthesis of highly ordered Cd S-Au-TiO_(2) ternary Janus structure via templateprotected sequential growth and conversion method.Arising from the integration of the rectification effect of Au-CdS and AuTiO_(2) Schottky barriers,the Janus configuration of the Cd S-TiO_(2) domains,the plasmonic effect of Au nanosphere,and the Zscheme charge transportation,the Cd S-Au-TiO_(2) Janus structure showed high efficiency in the model photocatalytic degradation of methyl orange(MO)dye.Importantly,the well-defined structural order allowed the identification of the correlation between the structure and the catalytic performance.We believe that the synthetic control and the mechanism insights would help the design and synthesis of sophisticated nanostructures,and would eventually promote their applications in photocatalysis fields.