Gr. Piscimar

Havana, Cuba

Gr. Piscimar

Havana, Cuba
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Alvarez-Lajonchere L.,Gr. Piscimar | Cittolin G.,Jl. Drupadi n 23
Aquacultural Engineering | Year: 2014

The importance, main development phases, and start-up procedures for a new marine fish hatchery are presented. General guidelines, start-up preparation phasing, and operations are explained. Specific detailed descriptions are given for equipment conditioning and commissioning of seawater pumping systems including a direct seawater intake and wells with sub-sand pre-filtration extraction systems. © 2014 .

Alvarez-Lajonchere L.,Gr. Piscimar | Ibarra-Castro L.,Research Center En Alimentacion sarrollo A C
Aquaculture | Year: 2013

A five-phase method for the evaluation and selection of tropical marine fish for intensive culture is proposed and the application of the first four phases is presented for the Caribbean region. In phase-1, an initial list of 50 species was prepared from 2175 present in the Western Central Atlantic, based on their commercial importance, and certain relevant biological features. Phase 2 includes economic and technological development considerations. Eleven preselected, four non-preselected, and six traditionally cultivated species (controls) were evaluated in phase-3 using a score and weighting factor method with four categories, established according to the point score. Species preselection by environment and culture system (phase-4) was carried out according to estimated performance at the site and culture system under Caribbean conditions, as well as the species' tolerance to environmental factors and the total score obtained as final criteria. To be finally selected, species must be subject to practical pilot-scale (phase 5) trials with technical, financial and ecological feasibility analyses. Yellowtail amberjacks, Seriola spp., and cobia, Rachycentron canadum, ranked first for open water cage and supra-littoral tank culture. Ranking in the second category were Florida pompano, Trachinotus carolinus, pompano, Trachinotus falcatus, and common snook, Centropomus undecimalis, which were selected for ponds and floating cages on estuarine and coastal waters, and Nassau grouper, Epinephelus striatus and mutton snapper, Lutjanus analis, which were selected for cages on coastal or offshore clear waters. Two of the exotic tropical species: barramundi, Lates calcarifer and mangrove red snapper, Lutjanus argentimaculatus, as well as one of the subtropical control species: red drum, Sciaenops ocellatus, were highly scored and ranked in the first two priority categories, thereby confirming the effectiveness of the selection method applied. © 2013 Elsevier B.V.

Alvarez-Lajonchere L.,Gr. Piscimar | Cittolin G.,Aquaculture private consultant
Aquacultural Engineering | Year: 2013

The most important operational maintenance, cleaning and disinfection routines are described on daily, weekly, per cycle and annual frequencies, considering facilities and equipment. Basic aspects of control, vigilance, automatic alarm systems, and preventive maintenance programs are briefly discussed. The importance, characteristic and functions of the plant maintenance manager and his assistants are highlighted, and the difficulties that can arise in some farms due to mistakes or when ignoring these aspects are analyzed. © 2013 Elsevier B.V.

Ibarra-Castro L.,Research Center en Alimentacion y Desarrollo | Gutierrez-Sigeros I.,UJAT | Alvarez-Lajonchere L.,Gr. Piscimar | Durruty-Lagunes C.V.,National Autonomous University of Mexico | Sanchez-Zamora A.,National Autonomous University of Mexico
Revista de Biologia Marina y Oceanografia | Year: 2015

The first experiments in maturation, spawning and larval rearing of spotted seatrout Cynoscion nebulosus in Sisal, Mexico were conducted. Sexual maturation and spontaneous spawning in wild captured fish after 20 months in captivity were obtained. In a spawning period of 88 days, 28 spawns were observed, of which 17 were viable. In total 28 × 106 eggs were collected, 70% of viability and 91% of fertilization was observed. The spawned eggs had mean diameter of 710 ± 8 μm with an oil droplet of 199 ± 9 μm. The percentage hatching of viable eggs was 96% and larval survival at 48 h after hatching was 79%. At 48 h post-hatch (PH), no traces of yolk and only traces of the oil droplet were observed. The most appropriate period for first feeding period is between 30 and 42 h PH, after which the mean survival decreases sharply to 9.3 ± 4.4% and 11.3 ± 4.8% at 54 h PH and 66 h PH, respectively. The larval rearing was done in 2 tanks, 4-m3 with an initial density of 75 viable eggs L-1(95.6% fertilization, hatching 97.7% and 88.8% survival at 48 h). Survivals were 0.4 and 1.2% at 26 days, with 1011 and 2903 juveniles harvested, with wet weights of 0.13 ± 0.04 g and 0.16 ± 0.03 g and total lengths of 25.3 ± 2.6 mm and 27.4 ± 1.9 mm respectively. Final densities and biomasses were 0.25 and 0.50 juveniles L-1 and 0.03 and 0.08 kg m-3, respectively. © 2015, Universidad de Valparaiso. All rights reserved.

Alvarez-Lajonchere L.,Gr. Piscimar | Ibarra-Castro L.,Research Center en Alimentacion y Desarrollo
Journal of the World Aquaculture Society | Year: 2012

Growth rate is one of the main biological criteria for selecting tropical marine fishes for intensive culture. Relationships of maximum observed length (MOL), length at first sexual maturity, growth performance index (Φ′), and juvenile absolute growth rate during nursery with growth rate during grow-out periods were studied and their equations were calculated for 30 tropical or subtropical marine fish species. All equations were positive and their correlation coefficients were significant (P < 0.01). Three nomographs were made to obtain gross estimates of probable growth rates on intensive fish culture using the above relationships. Species with MOL of 100 cm or larger, length at first sexual maturity of 35 cm or more, Φ′ of 2.90 or more, and growth during the nursery period of or above 0.3 g/d, would be expected to have growth rates of at least 2 g/d during the grow-out period. These criteria could help to identify species with best potential for intensive cultivation as a first step before a full evaluation and selection process is carried out. © Copyright by the World Aquaculture Society 2012.

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