MADURACIÓN Y REPRODUCCIÓN EN CAUTIVERIO DEL CAMARÓN BLANCO Litopenaeus schmitti BURKENROAD EN CUBA./ Maturation and reproduction in captivity of the white shrimp Litopenaeus schmitti Burkenroad in Cuba.
Bibliographic record
Abstract
La experiencia cubana en la camaronicultura como industria comenzó en 1987 con el camarón blanco Litopenaeus schmitti, especie autóctona cuya producción de semilla llegó a alcanzar 2338 t en el año 2000. Para hacer posible el programa de la camaronicultura en Cuba, fue necesario realizar estudios básicos y aplicados que permitieran el cultivo a escala comercial. En este artículo se presenta una recopilación de los principales resultados obtenidos durante más de veinte años de investigaciones. Entre los primeros logros obtenidos estuvieron la inducción de la maduración, la reproducción y el desove en condiciones de cautiverio y posteriormente el cierre del ciclo de cultivo. Colateralmente tomando como patrón a poblaciones silvestres se estudiaron las variaciones bioquímicas asociadas a la maduración ovárica de las hembras, obteniendo así información de utilidad para la selección de dietas, tanto frescas como balanceadas. Los resultados de aplicación inmediata se relacionaron con la búsqueda de indicadores de calidad de los reproductores asociados con la calidad y cantidad de células espermáticas, la composición bioquímica de los tejidos y efectores de la respuesta inmune innata. La caracterización morfológica del pedúnculo ocular y la localización del complejo neurosecretor órgano x-glándula sinusal posibilitaron realizar estudios de sus neuropéptidos hormonales, relacionados con el control endocrino de la reproducción en crustáceos decápodos. El conjunto de resultados que se muestran en esta revisión contribuyó a la obtención de una tecnología original para lograr la reproducción de L.schmitti en ciclo cerrado en Cuba y sentó las bases para a partir del año 2003 adecuar e implantar dicha tecnología en el cultivo de Litopenaeus vannamei. ABSTRACT Cuban experience in shrimp farming as an industry started in 1987 with the white shrimp Litopenaeus schmitti, an autochthonous specie whose seed production reached 2338 t in 2000. For making possible the program of shrimp farming in Cuba, it was required to carry out basic and applied studies that would allowed commercial scale cultivation. This article proposes a compilation of the main results obtained during more than twenty years of research in this matter. Among the first achievements were the induction of maturation, reproduction and spawning in captivity conditions and then the closure of the production cycle. Collaterally, taking wild populations as a standard, studies of biochemical variations associated with the ovarian maturation of the females were performed, yielding useful information to select diets, both fresh and pelleted. Results of immediate application were correlated with the search of quality indicators in the breeders associated with the sperm quantity and quality, the biochemical composition of the tissues and effectors of the innate immune response. The morphological characterization of the eyestalk and the localization of the neurosecretory complex Organ X-Sinus gland made it possible to perform studies of its hormonal neuropeptides associated to the endocrine control of reproduction in decapod crustaceans. The set of results displayed in this review contributed to reaching an original technology to achieve the reproduction of L. schmitti in a closed cycle in Cuba and established the foundations for starting in 2003 to adapt and implement this technology in L. vannamei.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".