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Made available in DSpace on 2020-12-12T01:55:38Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-05-15 Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) In the integrated culture of pelagic fishes and benthic prawns, a large quantity of nutrients and energy remain in the pond bottom after harvest. This study assessed whether the inclusion of an iliophagus species, such as curimbata (Prochilodus lineatus), can take advantage of those resources and improves yield and diet use efficiency in tambaqui (Colossoma macropomum) and Amazon river prawn (Macrobrachium amazonicum) integrated aquaculture. A completely randomized experiment was designed with two treatments, and five replicates each of integrated systems: tambaqui and Amazon river prawn (TP) and tambaqui, Amazon river prawn, and curimbata (TPC). Ten 0.01-ha earthen ponds were used as experimental unities. Juveniles of tambaqui (3.93 ± 1.63 g) and Amazon river prawn (0.02 ± 0.02 g) were stocked in all ponds at a density of 3 and 11 individuals per m−2, respectively. Five ponds, selected at random, were also stocked with curimbata (3.11 ± 2.61 g) at a density of 5 individuals per m−2. Tambaqui was fed twice a day with an extruded commercial diet (32% crude protein) to apparent satiation. The prawn and curimbata were not fed. The experiment lasted 53 days. The presence of curimbata did not affect tambaqui performance, whereas reduced the production of prawn in ~25%. The inclusion of curimbata increased total species yield by ~35% (from 734 to 991 kg.ha−1) and decreased FCR by ~31% (from 0.61 to 0.42). These results indicate that a mud-feeder like curimbata can take advantage of the large quantity of nutrients and energy deposited in the bottom of freshwater pond aquaculture. UNESP - São Paulo State University Aquaculture Center and CNPq, Via Paulo Donato Castelane s/n UFRPE – Rural Federal University of Pernambuco Department of Fisheries and Aquaculture, Rua Dom Manuel de Medeiros s/n, Dois Irmãos UNESP - São Paulo State University Aquaculture Center and CNPq, Via Paulo Donato Castelane s/n CAPES: 001

Made available in DSpace on 2020-12-12T01:43:00Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-02-01 Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) The aim of this study was to evaluate the feasibility of producing the Amazon river prawn (Macrobrachium amazonicum) with tambaqui (Colossoma macropomum) in integrated multi-trophic aquaculture (IMTA) systems. An experiment was carried out in a completely randomized design with four treatments (types of production systems) and three replicates per treatment (ponds): prawn monoculture (30 prawns. m−2); fish monoculture (3 fish. m−2); IMTA with prawns and fish free-swimming in the same pond (30 prawns. m−2 and 3 fish. m−2); and IMTA with prawns free-swimming and fish in cages placed inside the ponds (30 prawns. m−2 free-swimming and 40 fish. m−3 in net cages). Prawns and tambaqui in the monocultures received commercial pelleted diets, whereas only the tambaqui received the pelleted diet in the integrated cultures. The experiment lasted 5.7 months. Both the prawns and the fish developed well in stagnant ponds while using nutrient-rich water. The mean final body mass, final body length and productivity of the prawns in the monoculture were higher than those of the prawns in the IMTAs. No significant differences were observed for the survival of the prawns and the tambaqui between treatments, and for the mean final mass of the tambaqui between the monoculture and the IMTA systems. Prawn growth and yield were similar whether the tambaqui was reared free-swimming or in cages. Therefore, the prawns and the tambaqui are compatible for IMTA. Yield in IMTA was ∼0.6 t ha−1 prawns, 5 t ha−1 tambaqui in free-swimming and 3 t ha−1 in net-cages. In conclusion, the culture of Amazon river prawn and tambaqui in IMTA is technically feasible in the first grow-out phase of the tambaqui. This system is flexible and permits different management strategies according to the target markets for each species. UNESP - São Paulo State University Aquaculture Center, Via Paulo Donato Castelane s/n IFFR - Federal Institute of Education Science and Technology of Roraima - Campus Amajari, Rodovia Antonino Menezes da Silva, Km 03 UNESP - São Paulo State University Aquaculture Center, Via Paulo Donato Castelane s/n CNPq: 140306/2013 FAPESP: 2010/51271-6