Ground Ulva solution (GUS): A promising metamorphosis cue for Paracentrotus lividus larviculture

Carbonara, Stefano; D’Adamo, Raffaele; Novelli, Andréa; Pelosi, Sergio; Fabbrocini, Adele

doi:10.1016/j.aquaculture.2018.03.044

Cited by 5 publications

(3 citation statements)

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“…As sea water conditioned by the presence of conspecific adult specimens fed on Ulva spp. has been found to induce metamorphosis in P. lividus larvae (Gosselin & Jangoux, ), in our previous experiments (Carbonara et al, ) we assumed that grazed algal fragments release dissolved chemical cues, in accordance with what reported for other sea urchin species (Swanson et al, ). Therefore, in order to mimic the decomposing algal conditions arising from the sea urchins’ grazing activity, we ground Ulva spp.…”

Section: Discussionsupporting

confidence: 85%

“…Paracentrotus lividus embryos were obtained as described in Carbonara, D'Adamo, Novelli, Pelosi, and Fabbrocini (). Briefly, fertilization was carried out in a 20 L plastic bucket containing 15 L of FSW (sperm‐egg ratio 15,000:1; 200 eggs/ml).…”

Section: Methodsmentioning

confidence: 99%

“…Ground Ulva solution (GUS) was used as a metamorphosis‐inducing factor, having been found to give similar metamorphosis rates to Corallina ‐conditioned sea water (Carbonara et al, ), widely employed as a settlement inducer for P. lividus larvae (Grosjean et al, ; De La Uz et al, ; Vaïtilingon, Morgan, Grosjean, Gosselin, & Jangoux, ).…”

Section: Methodsmentioning

confidence: 99%

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Increasing the stocking density in Paracentrotus lividus larviculture: Effects on survival and metamorphosis rates

Carbonara¹,

D’Adamo

Novelli³

et al. 2019

Aquac Res

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The development of sustainable methods for sea urchin juvenile production is currently constrained by high mortality rates during larval growth and the high costs of larval rearing systems management. With the aim of developing a method for the production of juveniles of the purple sea urchin Paracentrotus lividus in a medium‐scale recirculating system, the present study focused on the effects of high stocking densities on larval growth. Plutei larvae were reared at three different densities (up to 7 ind/ml) in a semi‐static culture system. Larval survival and metamorphosis success were evaluated in order to identify the most effective density range. The highest metamorphosis rates (80%–95%) were obtained at 4 and 7 larvae/ml. These results are comparable with (and in some cases higher than) those reported for the same species at much lower larval densities. In conclusion, the rearing conditions tested here show for the first time that a significantly higher (4 ind/ml) stocking density than those of traditional P. lividus rearing methods (based on large volumes and low densities) can be adopted, thus supporting the feasibility of an increase in the final output of competent larvae with no increase in rearing volumes.

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Section: Discussionsupporting

confidence: 85%

Section: Methodsmentioning

confidence: 99%