Investigations Concerning Maximization of Cobia (Rachycentron candadum) Hatchery Production Including Incorporation of Microbial Management

摘要: As concerns regarding the growing human population, rising seafood demand, and up to present limited success of fisheries management intensify, aquaculture is increasingly posited as a means more efficiently produce commodities. However, expansion raises contentious issues itself. The current study addresses number these in attempts improve hatchery production related activities. Investigation less-harmful chemotherapeutants for disease reduction at egg stage could lead improved microbial management, increased survival during early larval stages, efficacy bacterial probiotic incorporation, reductions transfer between hatcheries locations. Attempts surface sterilize disinfect cobia Rachycentron canadum eggs with 3 2% hydrogen peroxide solutions significantly reduced through yolk-sac larvae stage. Furthermore, timing treatment application differing stages development was found impact survival, highlighting importance this compounding factor. Bacterial probiotics can remediate water quality, reduce target host stress, population growth rates live feed organisms. Two following studies investigated benefits incorporation Bacillus spp. blend During closed container mock shipment yellowfin tuna Thunnus albacares larvae, significant total ammonia nitrogen resultant from were observed. dissolved oxygen utilization might have resulted stress reduction, suggested by non-significant lower degree breakdown osmoregulation larvae. Incorporation within rotifer Brachionus plicatilis cultures higher daily mean populations, variability among replicates, non-coincident logistic regressions which yielded system carrying capacities. Broodstock should not only maximize quantity reproductive output, but quality well. Significant increases diameter increasing broodstock female age detected, well decreasing salinity. Confirmation potentially energy stores larger when produced older females, demonstrated other species, warranted. find parameters would sustainability via reducing demand wild-collected Artemia economic efficiency. Gaps knowledge achieving goal continue exist, conclusions drawn analysis multiple scale trials indicate temperatures 29-31 °C survival. Improvement sampling design data increase statistical rigor…