Adriana Rodríguez

• PhD
• Professor (Associate) at University of Magdalena

We investigated the growth, preferences, and thermal resistance of the sea cucumber Isostichopus isabellae to understand its thermal biology. Sixty individuals were kept in tanks at two temperatures (23 °C and 26 °C) for 30 days to determine their favorable maintenance temperature. Their survival rates and specific growth rates were measured to est...

Recientemente muchos investigadores han realizado estudios relacionados con la nutricion de las especies acuícolas, para poder reemplazar parcial o totalmente la fuente de proteína que comunmemte se utiliza en las formulaciones nutricionales una amplia gama de materias primas tanto de origen vegetal como de origen animal, han sido evaluadas las cua...

En los últimos años se ha evidenciado un notable aumento en las poblaciones de la medusa Lychnorhiza aff. lucerna en el departamento del Magdalena, lo que ha tenido un impacto en la pesca artesanal y el turismo. El conocimiento que se tiene sobre la biología básica de estos organismos sigue siendo limitado, por lo que se hace necesario profundizar...

The marine copepods culture has been considered a great resource for feeding in marine aquaculture. Oithona is the most abundant genus in the oceans and that is why they are the largest contributors of live prey in fish larvae. The present study aimed to identify the influence of temperature and salinity on the population growth of Oithona sp. unde...

Compendio sobre especies de peces cultivados el Iberoamérica.

El Consejo Superior de Investigaciones Científicas (CSIC) es el mayor organismo público de investigación en España y el tercero en Europa. Tiene como misión el fomento, la coordinación, el desarrollo y la difusión de la investigación científica y tecnológica de carácter multidisciplinar. Su fin último es contribuir al avance del conocimiento y al d...

Aquaculture offers solutions to meet the growing global demand for fish, and reports from the UN-FAO indicate that aquaculture production in Latin America (LA) has grown at rates above the world average in recent years. One of the major constraints in the diversification of LA aquaculture is the control of reproduction in several popular native fis...

Colombia presenta una gran diversidad de peces, la cual es el sustento de numerosas comunidades costeras, cuyos productos se destacan por poseer una variedad de propiedades nutricionales. Aunque, la actividad relacionada con la pesca y la acuicultura no ha recibido el impulso suficiente para potenciarse y para que además de su significativo aporte...

Isostichopus badionotus and Isostichopus sp. are two holothuroids exploited in the Caribbean region of Colombia. Until recently, they were considered a single species. During one year, 222 individuals of Isostichopus sp. and 114 of I. badionotus were collected in two bays of the Santa Marta region to study their reproductive biology and collect inf...

Isostichopus sp. is a variety of Isostichopus badionotus, proposed as a new species, which has been intensely fished in the Colombian Caribbean, arousing interest for its aquaculture. This study evaluated the effect of two culture densities (1–3 larvae ml−1), two temperatures (23°C and 26°C) and two microalgae diets (Isochrysis galbana, Chaetoceros...

Isostichopus sp. is a variety of Isostichopus badionotus, proposed as a new species, which has been intensely fished in the Colombian Caribbean, arousing interest for its aquaculture. This study evaluated the effect of two culture densities (1–3 larvae ml−1), two temperatures (23°C and 26°C) and two microalgae diets (Isochrysis galbana, Chaetoceros...

El Análisis demuestra que existen varias especies de peces marinos reproducidas de forma constante, con tal éxito, que les ha permitido producciones de juveniles a escalas “industriales”. Destacan con desove natural: el pargo Lutjanus guttatus (Costa Rica y México), la Seriola rivoliana (México y Ecuador), el lenguado Paralichthys adspersus (Chile)...

This study investigated the presence of microplastics (MPs) in the gastrointestinal tracts of four fish species from the estuarine Ciénaga Grande de Santa Marta (CGSM) in northern Colombia. Of the 140 fish purchased at a local market, 17 (12.1%) were found to contain MPs as confirmed by FT-IR analysis. Among the four different species, Mugil incili...

El bagre marino Ariopsis seemanni es aprovechado como pez de consumo en la alimentación de pescadores y pobladores de la región pacifica colombiana y como pez ornamental (5 a 10 cm -longitud total), a nivel comercial nacional e internacional. En Colombia esta especie ha sido priorizada en la agenda nacional de investigación en acuicultura de 2011-2...

Isostichopus sp. (Aspidochirotida: Stichopodidae) are sea cucumbers widely distributed in the Caribbean Sea. Amongst them, Isostichopus badionotus is one of the most harvested species. It shows a wide range of morphotypes widespread in the Caribbean region including different habitats (muddy, sandy and rocky bottoms, and sea grass beds). In Colombi...

Isostichopus sp. (Aspidochirotida: Stichopodidae) are sea cucumbers widely distributed in the Caribbean Sea. Amongst them, Isostichopus badionotus is one of the most harvested species. It shows a wide range of morphotypes widespread in the Caribbean region including different habitats (muddy, sandy and rocky bottoms, and sea grass beds). In Colombi...

Surface morphological structure of the body, and radial organs in sea cucumbers Isostichopus sp. aff badionotus, Isostichopus badionotus morphotype I and I. badionotus morphotype II were characterized by histological techniques. The three morphotypes studied demonstrated differences between them in gross morphology and in the distribution of body f...

Reproductive dysfunction ✓ Difficult to standardize the reproduction in the lab. ✓ Aggression between individuals. Research plans ✓ Broodstock nutrition. ✓ We propose C. dimerus as a Neotropical cichlid fish model for studies in neuroendocrinology, behaviour, toxicology and growth. We focused in the importance to count with a native model for these...

Sea cucumbers are common foods in Asian culture. They are commonly eaten as dry-salted. Thus, a dry-salting protocol for cucumbers includes the processes of: gutting, cooking, salting, drying and packing. Drying trials were conducted at 50˚C and 60˚C in an oven and air-dried, with no difference (P > 0.05) in yield observed between them. Protein con...

The sea cucumber family Stichopodidae is distributed throughout the Caribbean Sea. Isostichopus species are widespread in the entire Caribbean region, but little is known about the biology of this native species, especially on the Colombian coast. This study presents a description of the gametogenesis, natural spawning, and embryonic and larval dev...

Incluye bibliografía e índice

Oral Conference - WAS`2014. Advances on sea cucumber aquaculture

The knowledge of the chemical composition of invertebrates as sea cucumber contributes to improving our understanding of these living organisms. This study compared the chemical composition of wild sea cucumber Isostichopus sp., between February 2013 and January 2014. Sea cucumbers were captured by hand by artisanal fishermen and transported alive...

Sea cucumbers have an important ecological role in the marine environment because they are able to process organic and inorganic matter, which contributes to the oxygenation and energy transfer in the ecosystem. In general, there is a lack of knowledge on the basic morphology of native species of sea cucumber and the function of vital organs. The a...

Ninety-nine swordspine snook Centropomus ensiferus (9.80 ± 0.3 g, mean ± SE) were studied in order to evaluate the influence of salinity on physiological properties under rearing conditions. Growth performance, survival rates, and ion concentrations (Na+, K+, Cl−) as well proximal composition were measured over 76 days. Fish were exposed to three e...

The sea cucumber Stichopus sp. is a species that inhabits the Colombian Caribbean, and little is known about their reproductive behaviour under controlled laboratory conditions. During 2012 and 2013, from July to October, spontaneous spawning and spermiation events took place in the Aquaculture Laboratory of the Universidad del Magdalena (Santa Mar...

Se identificaron las comunidades bacterianas y fúngicas asociadas a la piel y al tracto digestivo de Isostichopus badionotus, con el objetivo de evaluar las posibles relaciones antagónicas entre éstas. Para tal fin, se realizaron frotis superficiales a nivel de la epidermis y el tracto digestivo, los cuales se sembraron en medios de cultivo específ...

Sea cucumbers are invertebrates that have been marketed legally and illegally for years in Colombia. Little is known of these species, and there is hardly any biological, ecological or market information on the population of the species under commercial exploitation. We present information on the sea cucumbers of the Caribbean coast of Colombia, wi...

Objective: Considering the high use of pesticides in Colombia and the harmful effects resulting from exposure to these substances on human health and the environment, a study for the determination of biomarkers of exposure and effect of pesticides in population of the banks of the Río Bogotá in Suesca, the levels of pesticides in river water sample...

The aim of the study was to determine the effect of two photoperiod regimes under artificial conditions on growth performance and survival in the European eel Anguilla anguilla during the transition from glass eel to elver. The fish were held in 12-h-light:12-h-dark (12L:12D) and in continuous darkness (DD) in fed and fast trials lasting 80 days. F...

Heavy metal accumulation of lead (Pb), chromium (Cr), and cadmium (Cd) in the muscle of the catfish Eremophilus mutisii was studied in 47 specimens, captured by anglers in the Bogotá River at two sampling sites (Chocontá and Suesca) during May-October 2005. Water samples were processed for physicochemical and metal analyses. Metal accumulation in m...

The effects of food deprivation and environmental salinity (Anguilla anguilla during the transition from glass eel to elver, were evaluated. Fasted elvers kept in fresh water were able to withstand starvation for >60 days, while those in brackish environments (salinity 10 and 20) reached the level of irreversible starvation at 37 and 35 days, respe...

We aimed to identify the optimal salinity for the acclimation and early weaning of European glass eels and elvers using growth performance, survival indices and tissue morphology, as well as evaluate the effects of three different diets (hake roe, a semimoist compound diet and a dry pelleted commercial compound feed) on the nutritional condition an...

We studied the recovery dynamics of physiological and tissue stress indicators after an acute nitrite intoxication episode (9.3 mM NO2−N for 18 h) in Siberian sturgeon yearlings (82±2 g). Nitrite intoxication resulted in a significant accumulation of the toxicant in the skeletal musculature, gills, liver, and blood plasma, provoking a severe methae...

At hatching, Siberian sturgeon larvae (Acipenser baerii) possess an undifferentiated lens and retina. The eye begins to differentiate at 3 days post-hatch (d. p. h.), and an external layer of cylindrical epithelium, rudimentary retina with some melanosomes, as well as simple tissue which constituted the crystalline lens, could be distinguished. Sev...

Exposure of Siberian sturgeon (Acipenser baeri) yearlings (172.0+/-18 g; mean+/-S.D.) to several NO(2)(-)-N concentrations (0, 25, 130, 180 and 275 mg/l) was studied for 72 h in static tests. At 72 h, the median-lethal concentration of NO(2)(-)-N was 130 mg/l in water with high chloride content (130.5 mg/l). Nitrite exposure produced high levels of...

The osmoregulation capabilities of juvenile Siberian sturgeon exposed to three experimental osmolalities (22, 250 and 387 mOsmol kg−1) were studied over a 45-day period. Growth performance, haematological parameters, ion concentrations, gill and spiral valve Na+-K+-ATPase activities, as well as gill and spiral valve histology, were measured. At the...

The most relevant changes in Acipenser baeri eye organization were detected between hatching and 5 days post hatch. At this age, the eye had an anterior chamber, lens, iris, choroid gland, scleral cartilage, cornea and a vitreous chamber lined by the retina (with two photoreceptors: rods and single cones).

Peripheral blood samples from five adult specimens of rainbow trout (Oncorhynchus mykiis) from an introduced population cultured in the Neusa's Experimental Fish Hatchery (73°38′28″ W; 5°8′30″ N) were studied with the electron microscope. The blood was fixed in 3% buffered glutaraldehyde, followed by 1% buffered osmium tetraoxide, dehydrated in asc...

Histological development of the digestive tract of Siberian sturgeon during early life stages (1–21 days post hatch) was studied using light microscopy. At hatching, the digestive tract is represented by a gastric cavity filled with yolk and lined by endodermal cells, and a partially differentiated hindgut; and does not communicate with the exterio...

Thirty-five normal, adult specimens of the rainbow trout Oncorhynchus mykiss (Richardson, 1836) cultured in the Neusa Fishculture Station (73 degrees 38'28" W; 5 degrees 8'30" N) were studied to establish normal blood values; the hematopoietic tissues (pronefros, spleen and thymus), and other organs such as the stomach were also structurally studie...