Grow-out culture of abaloneHaliotis tuberculata coccineaReeve, fed land-based IMTA produced macroalgae, in a combined fish/abalone offshore mariculture system: effect of stocking density

Abstract

Haliotis tuberculata coccinea has been identified as a target species for European aquaculture development, in order to fulfil the rising demand for abalone. The effects of different stocking densities on the growth performance, feed utilization and survival of two different initial size groups (30 and 40 mm) of abalones, during the final grow‐out to cocktail/market size (45–60 mm), were determined over a 6‐month period. Trials were performed in abalone cages installed in a commercial open‐sea cages fish farm. Animals were fed the red algae Gracilaria cornea and the green one Ulva rigida, both obtained from a land‐based integrated multi‐trophic aquaculture system. Survival rates were very high (94–98%) regardless the density employed. Sustained high linear growth was recorded both in shell and weight. However, a 17–19% reduction in weight gain was obtained by doubling the initial stocking density, suggesting a higher competition for space or food. Nevertheless, the high growth performance (70–94 μm day−1; 250–372% weight gain) and survival attained, even at high densities, denoted the suitability of the offshore mariculture system as well as the biofilter produced macroalgae for grow‐out culture of H. tuberculata coccinea that overall could reach cocktail/commercial size in only 18–22 months.

Interactive effects of family and stocking density on survival and growth of the sea urchin Strongylocentrotus intermedius

“…There was a clear trend of negative correlation between stocking density and body weight growth rate. This negative effect is consistent with many studies in aquatic animals (Dunham, Gurney-Smith, Plamondon, Yuan, & Pearce, 2013;Irwin et al, 1999;Lund, Steenfeldt, Herrmann, & Pedersen, 2013;Mgaya & Mercer, 1995;Pei, Dong, Wang, Tian, & Gao, 2012;Sookying, Silva, Davis, & Hanson, 2011;Viera, Gercende, Fernández Palacios, & Izquierdo, 2016), including sea urchins (Qi et al, 2016;Siikavuopio et al, 2007;Siikavuopio & James, 2011). Christiansen and Siikavuopio (2007) also reported that the growth rate of the sea urchin S. droebachiensis stocked at low density was not significantly affected by the stocking density.…”

Optimum Stocking Density of 3-year-old Pacific Abalone, Haliotis discus hannai Reared in Net Cage Culture

“…그러나 기존 연구는 치패와 중간육성 크기를 중심으 로 한 수용밀도 연구로 한정되어 있으며, 특히 해상가두리에서 는 북방전복이 최대 2년산까지의 적정 수용밀도만 보고되어 있어 (Yoon et al, 2004;Kim et al, 2014) Kim et al (1998; et al, 1988;Mgaya and Mercer, 1995;Capinpin et al, 1999;Yoon et al, 2003;Viera et al, 2014;Kim et al, 2013;. (Koike et al, 1979;Peck, 1983;Hadley and Manzi, 1984;Allan and Maguire, 1992;Parsons and Dadswell, 1992;Holliday et al, 1993;Mgaya and Mercer, 1995), 石田 ( and Mercer, 1995;Nie et al, 1996;Capinpin et al, 1999;Jarayabhand et al, 2010;Viera et al, 2014 …”

Native, invasive and cryptogenic Ulva species from the Israeli Mediterranean Sea: risk and potential

“…It is wellknown for forming free-floating "green tides" such as the blooms of U. prolifera that appear annually in the Yellow Sea and disrupted the 2008 Beijing Olympics sailing events (Li et al, 2016). Ulva provides services for the food industry (Rouxel et al, 2001) and is used in aquaculture of fish (Azaza et al, 2008) and marine invertebrates such as shrimps and abalone (Cruz-Suarez et al, 2010;Brito et al, 2013;Viera et al, 2016). Due to their high photosynthetic and growth rates (Longstaff et al, 2002;Figueroa et al, 2009), Ulva species are used as biofilters in integrated multi-trophic aquaculture systems to reduce organic loads from fish effluents (Bartoli et al, 2005;Korzen et al, 2016).…”