Salah satu jenis udang yang saat ini gencar dibudidayakan adalah vaname (Litopenaeus vannamei). Segmentasi usaha pembenihan mempunyai peranan penting pada sektor budidaya perikanan disertai dengan perkembangan unit hatchery cenderung semakin meningkat. Kualitas benur merupakan faktor sangat berpengaruh terhadap keberhasilan segmentasi pembesaran sehingga perlu dilakukan suatu upaya dalam rangka...

We used genetic parentage analysis of 6200 potential parents and 5497 juvenile offspring to evaluate the relative reproductive success of hatchery and natural steelhead (Onchorhynchus mykiss) when spawning in the wild between 2008 and 2011 in the Wenatchee River, Washington. Hatchery fish originating from two prior generation hatchery parents had <20% of the reproductive success of natural orig...

Many sea turtle nesting colonies are in decline worldwide, and a common conservation practice maximizes hatchling production by translocating eggs from threatened nests to protective beach hatcheries. Typically, translocated eggs are ‘doomed’, or at risk of death due to tidal inundation, predation, or poaching. Sea turtles exhibit temperature-dependent sex determination. We determined how prima...

The aim of this work was to be informed and aware of the red tide conditions before the entering of algal blooms in seawater supply canals of the shrimp farm and hatchery complexes in Bushehr Province. Field investigations and monthly samplings have been carried out to determine environmental parameters, nutrients, chlorophyll&ndash;a and phytoplankton in the southern part of the input water ch...

Shrimp farming in New Caledonia typically uses a flow-through system with water exchange rates as a tool to maintain optimum hydrological and biological parameters for the crop. Moreover, the effluent shows hydrobiological characteristics (minerals, phytoplankton biomass and organic matter) significantly higher than that of the receiving environment. Separate surveys were carried out in a bay (...

Hormonal control of oocyte maturation in crustaceans is reviewed. The bihormonal control of egg maturation is accomplished by the inhibitory neuropeptides originating in the X-organ/sinus gland neurosecretory system and a host of stimulatory hormonal factors secreted from various sources. Among the gonad stimulatory hormones, steroids play a pivotal role in the control of molting and reproducti...

a r t i c l e i n f o Keywords: Alaska Crustacean Hatchery Large-scale culture Paralithodes camtschaticus Red king crab Juvenile red king crab (Paralithodes camtschaticus) mass rearing was conducted in Seward, Alaska, USA in a king crab stock enhancement feasibility study. Hatchery-raised juveniles were cultured from larvae of 12 ovigerous females collected from Bristol Bay, Alaska, USA. Juveni...

Pacific whiteleg shrimp is a cultivated commodity with the prospect of increasing market opportunities yearly. The increase in value line need for pacific consumption. impact an state income general. cultivation activities have been carried out on large and small scale. However, proper enlargement production techniques are needed to production. This study aims determine technique grow-out so th...

Abstract This investigation aimed to improve the hatchery seed production strategy in terms of chronologies embryonic and larval development as well hatching, growth survival rates, rearing water quality green tiger prawn, Penaeus semisulcatus by integration effects different temperatures (23 °C, 26 29 32 °C) probiotic additives. The best shortest stages were favor °C with probiotic. hatching r...

The present study focused on the evaluation of a nonspecific synergistic effect of biogenic silver nanoparticles (AgNPs) in combination with biosurfactants against environmental bacteria and fungi. The AgNPs were synthesized in the culture supernatants of the biosurfactant producer Bacillus subtilis grown in brewery effluent, molasses or Luria-Bertani media. Antibacterial activities were tested...