The complete mitochondrial genome of the hybrid of Pagrus major (♀) × Acanthopagrus schlegelii (♂).

The complete mitochondrial sequence of the hybrid from red bream (Pagrus major ♀) × black porgy (Acanthopagrus schlegelii ♂) was firstly determined by using the PCR-based method. The total length of the mitogenome genes of the hybrid was 17 028 bp in accordance with red bream, and it contained 13 protein-coding genes, 22 transfer RNA genes, two ribosomal RNA genes and one control regions. Compared with the complete mitochondrial genome of its parents, the results showed that the hybrid of P.

Performance evaluation of wastewater treatment using horizontal subsurface flow constructed wetlands optimized by micro-aeration and substrate selection.

The effects of micro-aeration and substrate selection on domestic sewage treatment performance were explored using three pairs (with or without micro-aeration) of horizontal subsurface flow (HSSF) constructed wetlands (CWs) filled with zeolite, ceramsite or quartz granules. The individual and combined effects of micro-aeration and substrate selection on the purification performance of the experimental-scale HSSF CWs were evaluated. The results showed that micro-aeration significantly increased the treatment efficiencies for chemical oxygen demand, total nitrogen, total phosphorus (TP), ortho-phosphate (PO4(3-)-P) and ammonium nitrogen (NH4+-N) using HSSF CWs, while the substrate selection significantly affected the TP, PO4(3-)-P and NH4+-N removal efficiencies (p<0.