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| Oliveira,Ricardo Luís Mendes de; Santos,Leilane Bruna Gomes dos; Silva Neto,Nelson Gomes da; Silva,Scarlatt Paloma Alves da; Silva,Felipe dos Santos; Melatti,Enrique; Cavalli,Ronaldo Olivera. |
| ABSTRACT The effects of feeding rate and feeding frequency on the growth of laboratory-reared common snook (Centropomus undecimalis) were evaluated. Juveniles with mean±SD weight of 2.55±0.48 g and total length of 6.81±0.48 cm were divided into groups of 20 fish and reared in 30 polyethylene tanks of 50 L for 60 days. The experimental design was a 3 × 3 factorial with three feeding frequencies (F2, F4, and F6: two, four, and six daily meals, respectively), three feeding rates (R1, R2.5, and R4: 1.0, 2.5, and 4.0%/day of fish biomass, respectively), and three replicates, totaling nine treatments (F2R1, F2R2.5, F2R4; F4R1, F4R2.5, F4R4; F6R1, F6R2.5, and F6R4). The external control consisted of four meals a day offered to apparent satiety (F4S). Every 15... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aquaculture; Feeding; Feed management; Marine fish farming. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982019000100152 |
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| Vaz,Luciano Jensen; Wasielesky Jr.,Wilson; Cavalli,Ronaldo Olivera; Peixoto,Silvio; Santos,Marcos Henrique Silva; Ballester,Eduardo. |
| Technology for the culture of the pink shrimp Farfantepenaeus paulensis in low-cost cages and pen enclosures was developed together with artisanal fishermen of the Patos Lagoon estuary, southern Brazil. Although the production of postlarvae (PL) under laboratory conditions is well documented, survival and growth during the nursery phase cages and pen enclosures in the nature has not yet been analyzed. Therefore, the present study compared survival and growth of F. paulensis postlarvae reared either in cages or pens. Six cages (2.0 ´ 2.0 ´ 1.4 m) of PVC-coated polyester with a mesh size of 1.5 mm were stocked with 800 PL26 each. To assess the effect of the substrate, a 10 cm layer of sand was added to three of these cages to simulate a pen enclosure. No... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Penaeidae; Aquaculture; Shrimp farming; Nursery. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162004000300016 |
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| Peixoto,Sílvio; Cavalli,Ronaldo Olivera; Wasielesky Junior,Wilson. |
| The present study analyzed the reproduction of wild-caught Penaeus paulensis in relation to its molt cycle. The experimental design consisted of two treatments (continuous water flow and batch renewal) with two replicates. The stocking density in experimental tanks (1.50 x 0.96m) was approximately 7 animals/m², resulting in 4 males (23.9 ± 2.3 g) and 6 females (52.0 ± 5.5 g) per tank. Shrimp had their uropods cut for individual marking and female maturation was induced through the unilateral eyestalk-ablation. The intermolt period of females and males (17.4 ± 3.2 and 17.8 ± 4.6 days, respectively), number of days between molting and the first spawn (6.9 ± 2.8 days) and number of spawns in the intermolt period (1.4 ± 0.5), presented no significant... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Molt; Maturation; Penaeid. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132003000200020 |
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| Cavalli,Ronaldo Olivera; Wasielesky Jr,Wilson; Peixoto,Silvio; Poersch,Luís Henrique da Silva; Santos,Marcos Henrique Silva; Soares,Roberta Borda. |
| The shrimp Farfantepenaeus paulensis is considered a suitable species for culture in the Patos Lagoon estuary, southern Brazil, where its catch has been decreasing in the last few years. Considering the potential of estuarine areas for shrimp farming, the application of low-cost structures to culture shrimp, such as the pen enclosures, is being proposed as an alternative source of income for artisanal fishermen and farmers living near Patos Lagoon. From an economical standpoint, these alternative systems present several advantages over the traditional pond-based culture systems since land, water pumping and artificial aerations are not required, high natural productivity is available and inexpensive materials are employed in the construction of grow-out... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Shrimp farming; Alternative culture; Pen enclosure; Farfantepenaeus paulensis. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000500016 |
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| Peixoto,Sílvio; Cavalli,Ronaldo Olivera; Wasielesky,Wilson. |
| This paper describes the latest developments on maturation and reproduction of Farfantepenaeus paulensis in captivity, with special reference to the studies conducted during the last decade at the Laboratory of Mariculture, University of Rio Grande in southern Brazil, aiming to improve the future outlook for a sustainable nauplii production of F. paulensis. Particular emphasis has been given on the reproductive cycle, ovarian maturation, maturation and spawning systems, artificial insemination, broodstock reproductive performance and maintenance of captive broodstock. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Reproduction; Maturation; Farfantepenaeus paulensis; Penaeid. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000800016 |
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| Abe,Marcos Paulo; Fróes,Charles Nunes; Prentice-Hernández,Carlos; Wasielesky Júnior,Wilson; Cavalli,Ronaldo Olivera. |
| Foi avaliada a substituição da farinha de peixe (FP) por farelo de soja (FS) em dietas práticas na sobrevivência e crescimento do camarão-rosa Farfantepenaeus paulensis. Seis dietas isoprotéicas e isoenergéticas, contendo diferentes proporções de FP e FS, foram fornecidas aos camarões durante 28 dias. Os níveis de substituição da FP por FS foram 0 (controle), 12, 24, 36, 48 e 60%. Pós-larvas com peso inicial de 1,22mg (± 0,44) foram distribuídas ao acaso em tanques com 40L de água. A sobrevivência variou entre 70 e 80%, não apresentando diferenças (P>0,05). O peso final variou (P<0,05) de 20,84 a 27,37mg, e a taxa de crescimento específico (TCE) ficou entre 9,1 e 10,7% dia-1. A dieta com 60% de substituição da FP resultou no maior ganho de peso,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Camarão; Nutrição; Proteína; Ingredientes; Formulação de dietas. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782008000100035 |
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