Arsenio . Jose Areces

The study aimed at identifying possibilities for dwellers of the predominantly poor regions along the Caribbean coast in Costa Rica to utilize beach-cast Sargassum spp. as alternative source of income. Activities concerning the collection and processing of pelagic Sargassum spp. could happen on a small scale. The use as food human involved many pre...

Al evaluarse la calidad del agua afectada por vertimientos de nutrientes en áreas costeras, es posible en primer término: delimitar los impactos que sobre la flora y la fauna circundante tienen los flujo extra y continuado de muchos elementos y, en segundo lugar; _. y no menos importante es establecer las políticas de manejo que se derivan de la ac...

Un metal como el zinc, constituyente habitual de los ambientes marinos y estuarinos, cuando es introducido en cantidades adicionales asociado a los desechos industriales o aguas residuales trae alteraciones en los ciclos biogeoquímicos. Su potencial toxicidad puede interferir en la ecología de un entorno particular. En una ensenada contaminada...

Herbivores can drastically alter the morphology of macroalgae by directly consuming tissue and by inflicting structural wounds. Macroalgae host abundant and diverse epibiont communities , the dynamics of which tend to be mostly unknown in space and time. As the cultivation of macroalgae gains momentum worldwide, it is key to measure how epibionts c...

Las técnicas de cultivos para las algas marinas más productivas están muy estandarizadas; sobre todo en aquellas especies que tienen una larga trayectoria en su domesticación. Sin embargo, a pesar que Alsidium triquetrum es una agarófita de comprobada importancia en la industria farmacológica, su cultivo y manejo no han sido abordados con claridad...

Recent advances in molecular biology make it possible to sequence not only genes or genomes, but also to understand codon dynamics. For the organelle genes of these organisms, a small set of preferred codons are used for encoding proteins. For the first time, this paper treats the divergence of synonymous codon usage and its bias in the rbcL gene w...

Recent advances in molecular biology make it possible to sequence not only genes or genomes, but also to understand codon dynamics. For the organelle genes of these organisms, a small set of preferred codons are used for encoding proteins. For the first time, this paper treats the divergence of synonymous codon usage and its bias in the rbcL gene w...

Antecedentes: Desde 2011, las costas de América del Norte, México y el Caribe han experimentado un aumento inusual en la llegada de Sargassum de arribazón. Como consecuencia, se han generado acumulaciones masivas de especies holopelágicas del género Sargassum en áreas costeras del Caribe que amenazan la biodiversidad local y desencadenan pérdidas e...

The knowledge of the nutritional requirements and their relation to the physiology of marine algae growth is key to incorporate new species into aquaculture , whose dynamics tend to be largely unknown. The use of Alsidium triquetrum in the pharmacological industry depends on its availability in the natural environment, occasionally scarce. As macro...

Las algas marinas se corresponden con un grupo muy diverso y son tan importantes para nuestro mundo marino, como son las plantas para el ambiente terrestre. El género Sargassum es uno de los grupos más destacados dada su abundancia en la zona costera del Caribe de Costa Rica. Tratado desde el punto de vista anatómico en la presente se abordan: aspe...

Background: Since 2011, the coasts of North America, Mexico, and the Caribbean have experienced an unusual increase in the arrival of Sargassum. As a consequence of this massive accumulations of Sargassum holopelagic species in Caribbean Sea have been generated and that threaten local biodiversity and trigger economic losses associated with beach...

Ninguna de las dos especies del género Alsidium C. Agardh presentes en la plataforma insular cubana, A. triquetrum (S. G. Gmelin) Trevisan y A. seaforthii (Turner) J. Agardh, se habían estudiado a fondo como recurso antes de 1985. A pesar de que varios autores cubanos sugirieron el uso de A. triquetrum como fuente de agar, ambas especie apenas habí...

O presente trabalho é parte do reconhecimento da biodiversidade de algas marinhas bentônicas do arquipélago cubano, como forma de contribuição aos estudos taxonômicos dos espécimes do gênero Chondria C. Agardh (Ceramiales, Rhodophyta) de Cuba. O gênero Chondria foi descrito por C. Agardh em 1817 e é caracterizado pelo talo polissifônico, constituíd...

We report the first screening for antioxidant activity (AOX) of three dominant seaweeds from low intertidal reefs of Brazil. Sargassum furcatum, Bryothamnion triquetrum, and Osmundaria obtusiloba were extracted with dichloromethane and methanol (2:1), and AOX was measured by five UV-vis microplate spectrophotometric methods: DPPH (2,2-diphenyl-1-pi...

RESUMEN Se presenta el inventario taxonómico actualizado del macrofitobentos de la zona litoral somera del municipio Playa, La Habana, Cuba. Se realizaron recolectas mensuales en cinco sitios con diferente grado de afectación antrópica entre los años 2011 y 2014. Se muestreó en la zona sublitoral hasta 2 m de profundidad, mediante buceo en apnea. F...

Functional principal component analysis (FPCA) is a technique which has been gaining power in applications by means of getting acquainted with its scope and the possibilities of interpretation of complex data. A direct generalization of FPCA is the Multiple Functional Principal Component Analysis (MFPCA) which deals with multiple time series. The a...

Based on the principle that sets out sustainable development as the ability of the human system has been developed to meet the needs of current generations without compromising the resources and opportunities for growth and development of future generations. The fishery for spiny lobster (Panulirus argus)was exa-mined. The development of good gover...

The spiny lobster (Panulirus argus,Latreille, 1804) fishery in the gulf of Batabanó represents about the 75 % of the annual Cuban production. The gradual deterioration of habitats quality, due to the action of environ-mental variables, has directly reflected on the extent and nature of benthic marine habitats modifying fishing and nursery areas of...

Background: As part of the monographic studies on the Laurencia complex (Rhodomelaceae, Rhodophyta) from Cuba, detailed taxonomic research was carried out on Laurencia coelenterata, a diminutive species collected in Santiago de Cuba, in the eastern Cuban archipelago. The vegetative and reproductive features of the species clearly belong to the genu...

O crescente grau de urbanização da costa brasileira, sobretudo na região Nordeste, promove vários impactos nas comunidades marinhas. Esses impactos influenciam diretamente os organismos que habitam a região entremarés dos recifes costeiros. Este estudo descreve as respostas das comunidades bentônicas a diferentes graus urbanização em cinco recifes...

The potential risks of cultivating carrageenophyte genera for commercial purposes in the circumtropical belt are debated. However, species introductions of two such genera, Kappaphycus Doty and Eucheuma J. Agardh, have been reported in 30 different locations in this region over the last 30 years. On several occasions, these introductions did not ad...

Una de las características más importantes que presentan los sistemas socio-ecológicos es la llamada resiliencia, la cual está relacionada con la magnitud de las fuerzas o presiones que un sistema puede absorber, siendo por lo tanto capaz de auto-organizarse y mejorar su capacidad de adaptación. En el presente trabajo son analizadas las característ...

The Intergovernmental Panel for Climate Change (IPCC) reports that Global Environmental Changes (GEC) are occurring quicker than at any other time over the last 25 million years and impacting upon marine environments (Bellard et al., 2012). There is overwhelming evidence showing that GEC are affecting both the quality and quantity of the goods and...

It was assessed the possibility of segregating four species of the Laurencia Lamouroux sensu lato complex present in the Cuban shelf, using twelve macro-anatomic descriptors, some of them of meristic type, and applying descriptive statistics, the Pearson linear correlation coefficient and three multivariate techniques: K-means Clustering, Canonical...

Laurencia caduciramulosa and L. minuscula (Ceramiales, Rhodophyta) are reported for the first time from the Cuban archipelago based on materials collected from the north-western coast of Cuba (Havana and Rincón de Guanabo). The specimens of these two species, both characterized by a markedly reduced size, were collected twice, in April 2006 and Jun...

The Gulf of Batabano is an important region of the Cuban shelf, which environmental conditions are aim of several ecological assessments. In order to contribute to the characterization of their benthic communities, the structure of the macrofauna in sediments of this shallow-water ecosystem was determined. Higher diversity and abundance of macrofau...

Benthos samples in the Gulf of Batabanó (Cuba) were evaluated to explore if reported reduced lobster and finfish catches over the past two decades may be (at least partially) related to community changes and loss of benthic habitats of the gulf. Data was obtained from cruises carried out during the periods 1981-85 and 2003-04 covering the whole gul...

Se presenta un inventario de especies de macroalgas y angiospermas marinas del Archipiélago Sabana-Camagüey (ASC). Se identificaron 379 taxones infragenéricos: 177 Rhodophyta, 49 Ochrophyta, 147 Chlorophyta y seis Magnoliophyta. El acumulado de especies representó el 78% de las conocidas para Cuba hasta 2005, lo que muestra la alta diversidad de ma...

Se identificaron 5 Hábitats Bentónicos del Golfo de Batabanó en Cuba, teniendo en cuenta el sustrato y la vegetación submarina (pastos marinos y macroalgas), mediante la clasificación supervisada de cinco imágenes del sensor Enhanced Thematic Mapper Plus (ETM+), del satélite LANDSAT-7. Se obtuvieron un total de 45 estaciones de muestreo o campos de...

The inventory of macroalgae and marine angiosperms species of the Sabana-Camagüey Archipelago (ASC) is presented. 379 infrageneric taxa: 177 Rhodophyta, 49 Ochrophyta, 147 Chlorophyta and six Magnoliophyta were identified. The species of macroalgae accumulated represents the 78% of the species known for Cuba until 2005, what demonstrates the high d...

A national scale analysis to identify potential areas desirable for a system of Marine Protected Areas (MPAs), and to assess the coverage of the existing MPA sites on the shelf of Cuba was undertaken using the Decision Support Tool MARXAN. Two major goals were set for identification of new areas: first, they should be representative to Cuba's coast...

INTRODUCCIÓN El género Laurencia fue establecido por Lamouroux en 1813 a partir de la segregación de siete especies del género Fucus, y la descripción de L. intricata como un nuevo miembro para la ciencia de este recién creado taxón. El género, sensu lato, cuenta hoy en día con no menos de 156 especies conocidas. Debido a su importancia ecológica y...

An inventory of the macrophytobenthos from soft bottoms of the northern coast of the Matanzas province, Cuba, is presented. A total of 163 species was obtained: 77 red algae (Rhodophyta), 12 brown algae (Phaeophyta), 70 green algae (Chlorophyta) and 4 seagrasses (Magnoliophyta). In comparison with a phycological survey carried out in 1989, 114 spec...

Salinity and temperature effects on the growth rate of Bryothamnion triquetrum, a red algae widespread in Caribbean basin, was evaluated in a range limited by naturally extreme values of these factors in the species biotope. The tropical behavior fo this species was corroborated experimentally. In the range of salinities between 27 and 43 ‰ the ter...

Eleven in situ culture trials with the agarophyte Bryothamnion triquetrum were carried out during one year, using two fastening methods: rope fixation and free floating pieces inside net bags. Feasibility of farming this species has been shown when it is cultivated during short periods of time in summer. Polypropylene nets used as mechanical suppor...

RESUMEN Se exponen los resultados de un taller de trabajo llevado a cabo con el fin de generar la documentación básica requerida para la implementación del proceso de la GIZMC en el Golfo de Batabanó, Cuba. En este esfuerzo colectivo participaron 21 expertos con experiencia y competencia en el diagnóstico y la gestión ambiental. En el transcurso de...