Growth and viability of hatchery‐reared Argyrosomus japonicus released into open and semi‐closed systems

Abstract

Hatchery-reared Argyrosomus japonicus (Temminck & Schlegel) were released into estuaries of varying habitat between 1996 and 2004, and growth and recruitment to the fishery evaluated. Fish stocked earlier in summer had significantly faster growth rates (P < 0.01), and post-stocking mortality ranged from 1.1% to 11.

Generalized Predatory Impact Model: A Numerical Approach for Assessing Trophic Limits to Hatchery Releases and Controlling Related Ecological Risks

“…The model provides a starting point for estimating release sizes, and the accuracy of the predictions can be validated by both experimental work and reviewing the results from trial releases. These pilot-scale releases are ideally conducted in a targeted fashion based on a solid understanding of species biology and ecosystem characteristics (e.g., Taylor et al, 2013), which will help to ensure that species requirements are met by the stocked system and improve the survival of stocked fish (Taylor et al, 2009).…”

“…These species were chosen because they occupy a similar trophic position but differ in growth, fishing impact, and ecosystem, and there were sufficient existing data to parameterize the model. Simulations for mulloway were performed using temperature measurements and primary productivity estimates in the Georges River, Sydney, Australia, an estuary that has previously been stocked with mulloway (Taylor et al, 2009). Average annual temperatures and associated variance were measured in the river using temperature loggers (Hobo Pendant) from November 2007 to November 2008.…”

“…The species inhabits inshore and near-shore areas (Taylor et al, 2006b), is fast growing, matures from 51 cm total length (TL), and is currently classified as overfished in New South Wales (Silberschneider et al, 2009). Research into the development of stock enhancement for the species has been underway across several estuaries (Taylor et al, 2009). Common snook (Centropomus undecimalis; hereafter referred to as snook) are a coastal warm-water fish of economic importance, which commonly associate with shoreline habitat (Peters et al, 1998).…”

Prawn hatchery modifications and adaptions for temperate marine fish culture in northern NSW, Australia

“…In Australia (Taylor et al, 2005), and more recently NSW, there has been growing interest in the release of marine fish into estuaries or impoundments (dams or lakes) to enhance wild stocks and recreational fishing (Taylor et al, 2009 (Pollock, 1982) and Australian bass (Fielder and Heasman, 2010), the dusky flathead and sand whiting are reported to spawn during summer in NSW (Burchmore et al, 1988;Gray and Barnes, 2008), allowing for the potential hatchery production of two or more species over an extended period. These species also have potential for aquaculture because of their market place acceptance, economic value and their ability to tolerate wide variations in both salinity and temperature (Taylor et al, 2005).…”

Marine Stock Enhancement, Restocking, and Sea Ranching in Australia: Future Directions and a Synthesis of Two Decades of Research and Development

“…Fish grew at around 1 mm d −1 regardless of season, and recaptured fish were successfully identified as released individuals by OTC marks in the otoliths of these fish. The initial releases in Smiths Lake were replicated in 2003 and 2004 with little success and negligible recruitment to the fisheries (Taylor 415 and Piola, 2008;Taylor et al, 2009). The factors contributing to the poor performance of releases in coastal lagoons included poor survival and high emigration, largely caused by the lack of key habitat for juveniles available in coastal lagoons (Taylor, 2007).…”