We assessed the influence of different organic matter (OM) inputs associated with terrigenous/freshwater allochthonous and sewage derive on bioturbation and irrigation potential community indices (BP_c and IP_c) of the soft-bottom macrofauna community. The macrofauna was sampled from two different sedimentary impacted areas, in front of the Po River Delta (northern Adriatic Sea) and sewage discharge diffusion zone (Gulf of Trieste). The highest values of BP_c and IP_c were observed at the northward sampling stations of the prodelta and the stations 25 m distance in front of the main sewage outfall. Species richness showed high values in the prodelta likely due to the OM positive effect from the delta, and it increased with increasing distance from the pipeline due to the effect of OM from the sewage discharge. The bioturbation indices differed due to the presence of surface deposit feeders and the injection depth (from 2 to 5 cm) with limited movement at the station located northwards in the prodelta and 25 m distance in the diffusion zone. We infer that the difference in bioturbation indices was likely due to the effects of grain-size composition and the degree of organic enrichment in both study areas.

Molecular parentage analysis is a powerful tool for reconstructing pedigrees and estimating genetic parameters in aquaculture species. It is based on the comparison of DNA marker genotypes between offspring and potential parents. This review provides a concise overview of molecular parentage analysis in aquaculture, covering its principles, methods, applications, challenges, and limitations. It describes common DNA markers, including microsatellites and single nucleotide polymorphisms (SNPs), used in parentage analysis and the criteria for their selection. The software and statistical methods for assigning parentage and evaluating the accuracy and power of the assignment are also discussed. This review demonstrates applications for estimating genetic parameters, investigating inbreeding, evaluating reproductive success, and improving selective breeding programs. In conclusion, while molecular parentage analysis is a valuable tool for improving genetic management in aquaculture, careful planning, implementation, and interpretation are essential.