Matches in SemOpenAlex for { <https://semopenalex.org/work/W656687771> ?p ?o ?g. }
- W656687771 abstract "Blue shrimp Litopenaeus stylirostris farming is a major and profitable activity of aquaculture industryin New Caledonia. However, it is facing two seasonal bacterial diseases, which decrease rearedshrimp yield and threaten the sustainability of the aquaculture development. As reported by theliterature, polyculture with fish would have the potential to decrease the impact of these kind ofdiseases, prevent the deterioration of the environment and to increase the production of the ponds. Thefeasibility of L. stylirostris and Siganus lineatus polyculture in earthen ponds was carried out in thisstudy. The main objectives were 1) to estimate the adaptive capacity and growth performance of S.lineatus, and the environmental variations in a closed culture system, 2) to estimate the technicalfeasibility of L. stylirostris and S. lineatus polyculture, and 3) to estimate the effects of L. stylirostrisand S. lineatus polyculture on zootechnical performances and pond ecology in comparison withmonoculture of these species.To answer to the first objective, Siganus lineatus (5.7g) was stocked at 7, 14 and 21 fish.m-2 in aclosed culture system. After 8 weeks of culture period, S. lineatus growth performance was similarbetween all densities. S. lineatus could well adapt and grow in a closed system, even at lowtemperature, ca. 20oC and high stocking density, 21 fish.m-2. High stocking density did not havenegative effects on S. lineatus growth performance, but could cause the environmental deteriorationdue to increased nutrient input and accumulated organic wastes in the culture system. Asconsequence, S. lineatus could die when water oxygen depleted to below 2 mg.L-1.To reach the second and the third objective, a second experiment showed that adding S. lineatus (25.5g) to L. stylirostris (2.9 g) culture system (15 shrimp.m-2) at 1.2 and 2.4 fish.m-2 did not affect L.stylirostris zootechnical performance during the first stage of the rearing. S. lineatus gained 100% ofsurvival and similar growth performance in all densities. The polyculture system increased totalcombined production by 47 – 106 % and reduced FCR by 31.6 – 47.7% compared with those inshrimp monoculture. The addition of S. lineatus to the culture system did not have significantlyeffects on the gross primary productivity, the respiration, the nutrient and particulates fluxes at thewater-sediment interface of the pond ecosystem.In a third experiment, using higher stocking biomasses of L. stylirostris (14 g) at 156 g.m-2 in apolyculture with S. lineatus (19 g) (80 g.m-2) and at 237 g.m-2 in shrimp monoculture, we observed ahigh shrimp mortality. Conversely, stocking biomasses of S. lineatus (19 g) at 155 g.m-2 in apolyculture with L. stylirostris (14 g) (81 g.m-2) and at 235 g.m-2 in monoculture resulted in increasesof S. lineatus biomasses. This study showed that polyculture using S. lineatus is able to reduce organicwastes and nutrient release by consumption uneaten feed and retention input nutrients in biomass thatcontribute to limit the impact of the pond ecosystem eutrophication.Results of stable isotope analyses showed that the used pellet feed was not a major carbon source, butwas an important nitrogen source for both L. stylirostris and S. lineatus. Natural biota, includingsediment organic matter and particulate organic matter, was a main carbon source and represented asa secondary nitrogen source for both species.It may be concluded that S. lineatus is a suitable candidate for commercial culture in bothmonoculture and polyculture with L. stylirostris in earthen pond. Polyculture should be a properapproach that could partly contribute to sustainable development of aquaculture, but needs specificresearch to optimize the trophic status of the reared species." @default.
- W656687771 created "2016-06-24" @default.
- W656687771 creator A5001558493 @default.
- W656687771 date "2014-07-21" @default.
- W656687771 modified "2023-09-23" @default.
- W656687771 title "Polyculture crevette Litopenaeus stylirostris (Stimpson, 1974) et poisson Siganus lineatus (Valenciennes, 1835) : faisabilité technique et effets sur le fonctionnement écologique des bassins d'élevage de crevettes" @default.
- W656687771 cites W1161316732 @default.
- W656687771 cites W1491619236 @default.
- W656687771 cites W1550205484 @default.
- W656687771 cites W1594207512 @default.
- W656687771 cites W1603372525 @default.
- W656687771 cites W1642724957 @default.
- W656687771 cites W186554426 @default.
- W656687771 cites W1965231227 @default.
- W656687771 cites W1973334142 @default.
- W656687771 cites W1973696996 @default.
- W656687771 cites W1982389495 @default.
- W656687771 cites W1984007290 @default.
- W656687771 cites W1991927637 @default.
- W656687771 cites W1993129329 @default.
- W656687771 cites W1997430228 @default.
- W656687771 cites W1997980987 @default.
- W656687771 cites W2001103177 @default.
- W656687771 cites W2002403365 @default.
- W656687771 cites W2006245552 @default.
- W656687771 cites W2008293492 @default.
- W656687771 cites W2012584464 @default.
- W656687771 cites W2019807560 @default.
- W656687771 cites W2020276724 @default.
- W656687771 cites W2021134311 @default.
- W656687771 cites W2029523864 @default.
- W656687771 cites W2031087536 @default.
- W656687771 cites W2032747869 @default.
- W656687771 cites W2034397021 @default.
- W656687771 cites W2039881054 @default.
- W656687771 cites W2041111865 @default.
- W656687771 cites W2042486354 @default.
- W656687771 cites W2042723522 @default.
- W656687771 cites W2049767272 @default.
- W656687771 cites W2051200550 @default.
- W656687771 cites W2052487312 @default.
- W656687771 cites W2055957490 @default.
- W656687771 cites W2058866528 @default.
- W656687771 cites W2058947033 @default.
- W656687771 cites W2062668390 @default.
- W656687771 cites W2062728971 @default.
- W656687771 cites W2072562195 @default.
- W656687771 cites W2073947474 @default.
- W656687771 cites W2074009354 @default.
- W656687771 cites W2080411282 @default.
- W656687771 cites W2080674494 @default.
- W656687771 cites W2085943787 @default.
- W656687771 cites W2089934110 @default.
- W656687771 cites W2095421820 @default.
- W656687771 cites W2099742196 @default.
- W656687771 cites W2103256695 @default.
- W656687771 cites W2110162474 @default.
- W656687771 cites W2120322614 @default.
- W656687771 cites W2122754148 @default.
- W656687771 cites W2132328497 @default.
- W656687771 cites W2136519478 @default.
- W656687771 cites W2141899433 @default.
- W656687771 cites W2146041392 @default.
- W656687771 cites W2147021195 @default.
- W656687771 cites W2147255965 @default.
- W656687771 cites W2148638891 @default.
- W656687771 cites W2153164489 @default.
- W656687771 cites W2169721174 @default.
- W656687771 cites W2172142245 @default.
- W656687771 cites W2183207769 @default.
- W656687771 cites W2294008548 @default.
- W656687771 cites W2463171996 @default.
- W656687771 cites W781034271 @default.
- W656687771 hasPublicationYear "2014" @default.
- W656687771 type Work @default.
- W656687771 sameAs 656687771 @default.
- W656687771 citedByCount "0" @default.
- W656687771 crossrefType "dissertation" @default.
- W656687771 hasAuthorship W656687771A5001558493 @default.
- W656687771 hasConcept C141896089 @default.
- W656687771 hasConcept C153279818 @default.
- W656687771 hasConcept C18903297 @default.
- W656687771 hasConcept C2909208804 @default.
- W656687771 hasConcept C505870484 @default.
- W656687771 hasConcept C68701300 @default.
- W656687771 hasConcept C86803240 @default.
- W656687771 hasConcept C86909935 @default.
- W656687771 hasConceptScore W656687771C141896089 @default.
- W656687771 hasConceptScore W656687771C153279818 @default.
- W656687771 hasConceptScore W656687771C18903297 @default.
- W656687771 hasConceptScore W656687771C2909208804 @default.
- W656687771 hasConceptScore W656687771C505870484 @default.
- W656687771 hasConceptScore W656687771C68701300 @default.
- W656687771 hasConceptScore W656687771C86803240 @default.
- W656687771 hasConceptScore W656687771C86909935 @default.
- W656687771 hasLocation W6566877711 @default.
- W656687771 hasOpenAccess W656687771 @default.
- W656687771 hasPrimaryLocation W6566877711 @default.
- W656687771 isParatext "false" @default.
- W656687771 isRetracted "false" @default.