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| Purcell, S; Patrois, Jacques; Fraisse, N. |
| The co-culture of juvenile sea cucumber Holothuria scabra (Jaeger), or 'sandfish', with juvenile blue shrimp Litopenaeus stylirostris (Stimpson) was tested by growing groups in co-culture and monoculture for 3 weeks in tanks with enriched sand substratum. Feed was supplied on trays, accessible only to shrimp. Survival of shrimp and sandfish was high in all treatments (73-100%). Growth of shrimp did not differ between monoculture and co-culture, but sandfish grew significantly slower in co-culture (P=0.03), although their sand burying and surface foraging were apparently unaffected by shrimp (P=0.76). However, shrimp increased the levels of total ammonia-N in tanks, which related inversely with sandfish growth (P=0.04). Conversely, sandfish did not appear... |
| Tipo: Text |
Palavras-chave: Burying behaviour; Ammonia; Sandfish; Holothurian; Polyculture. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/publication-1356.pdf |
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| Bell, J; Agudo, N; Purcell, S; Blazer, P; Simutoga, M; Pham, Dominique; Della Patrona, Luc. |
| We examined the potential for producing the large numbers of sandfish (Holothuria scabra) needed for restocking programmes by co-culturing juveniles with the shrimp Litopenaeus stylirostris in earthen ponds. Our experiments in hapas within shrimp ponds were designed to detect any deleterious effects of sandfish on shrimp, and vice versa. These experiments showed that a high stocking density of juvenile sandfish had no significant effects on growth and survival of shrimp. However, survival and growth of sandfish reared with shrimp for 3 weeks were significantly lower than for sandfish reared alone. Increased stocking density of shrimp also had a significant negative effect on survival and/or growth of sandfish. A grow-out trial of juvenile sandfish in... |
| Tipo: Text |
Palavras-chave: Shrimp; Sea cucumbers; Sandfish; Pond culture; Predation; Co culture. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-3590.pdf |
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