Luis TroccoliUniversidad de Oriente | UDO · Aquaculture
Luis Troccoli
Dr
About
135
Publications
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Introduction
Marine Biologist, with a Degree in Biology, Mention in Marine Biology. M. Sc in Marine Sciences and Doctorate in Marine Science. Currently Professor of the Faculty of Marine Sciences, Santa Elena Peninsula State University since January 2018. Professor with 33 years of activity continues as a research professor at the University of Oriente, Venezuela. (Currently in Retired condition). Twice (2014-2015) and (2015-2016) linked as Prometheus in the National Fisheries Institute of Ecuador. 87 public
Additional affiliations
January 2018 - May 2020
Universidad Estatal Península de Santa Elena
Position
- Professor
June 1981 - present
November 2015 - November 2016
Instituto Nacional de la Pesca, Ecuador
Position
- Investigador Prometeo, Senescyt
Education
August 1997 - August 2001
Cinvestav. IPN. Ciencias del Mar
Field of study
March 1986 - November 1989
Universidad de Oriente, Instituto Oceanográfico de Venezuela
Field of study
- Marine Sciences
April 1976 - June 1981
Universidad de Oriente, Venezuela
Field of study
- Marine Sciences
Publications
Publications (135)
La zona costera de la provincia de El Oro-Ecuador, forma parte del estuario del golfo de Guayaquil, ecosistema
de alta productividad pesquera, en el que convergen corrientes y masas de agua que lo hacen muy fértil y con una gran diversidad
de organismos, entre los cuales se encuentra el microfitoplancton; por ello se determinaron sus cambios estruc...
Temora is a representative genus of Calanoida copepods and is abundant in tropical pelagic ecosystems. The abundance of males, females, and sex ratio of the species of the Temoridae family and their relationship with environmental variables were studied in Mochima National Park between
The depth culture influence (4, 8, and 16 m) and periods (upwelling and non-upwelling) on growth and survival of the pearl oyster Pinctada imbricata during 10 months in the southeastern Caribbean Sea (Cariaco Gulf) were evaluated. Monthly records were taken of survival, body growth, and fouling organisms of the pearl oyster, as well as weekly sampl...
RESUMEN Diferentes índices son utilizados para evaluar el estado trófico de las aguas marinas costeras, lo que a menudo proporciona resultados diferentes para el mismo sistema acuático. El objetivo de este trabajo fue evaluar el estado trófico de las aguas de la ensenada de Turpialito (golfo de Cariaco) en Venezuela, mediante la aplicación de tres...
Cladocerans in coastal environments occupy a predominant place in the pelagic food web after copepods. The
composition, abundance and vertical distribution of Cladocera were evaluated in the Guaracayal depression,
Gulf of Cariaco, Venezuela. Sampling was carried out bimonthly between April 2012 and April 2013. Water
samples were collected with a...
Fatty acids play a fundamental role in the ecology and growth of many invertebrates, such as filter-feeder bivalve. To guarantee adequate nutrition during transfer from the nursery to the natural environment, we studied the survival, growth and fatty acid (FA) profile of Crassostrea rhizophorae oyster spat fed with seven microalgae combinations of...
El fitoplancton es un indicador de los procesos en los cuerpos de agua.
Desde mayo a noviembre de 2018, en el estero Salado de Guayaquil, se
efectuaron muestreos superficiales de fitoplancton, clorofila a, mediciones
de temperatura, salinidad y pH superficial. Así también se recolectaron
muestras de agua para los análisis de nutrientes inorgáni...
This study evaluated the performance of P. sterna under suspended culture at three depths (2, 6, and 10 m). Juveniles (dorso-ventral length 42.6±0.94 mm) were placed in enclosures suspended on a long line in Palmar (Ecuador) from October 2018 to October 2019. The antero-posterior axis of the shells, the shell, softs tissues, and biofouling masses,...
The determination of the carbon system in coastal areas provides insight
into the atmosphere-ocean carbon flux. Biweekly samples were
collected from October 2018 to December 2019 at four depths (surface,
4, 8 and 16 m), in an area dedicated to mithilid seed production in the
Gulf of Cariaco, Venezuela. Measurements of temperature, salinity, pH,
nut...
Se analizó la abundancia y distribución de los copépodos pelágicos en relación con la capa hipóxica en la depresión de Guaracayal, Golfo de Cariaco, Venezuela. Se realizaron muestreos biológicos y ambientales bimestrales durante un ciclo anual (abril 2012-abril 2013). Las muestras de agua fueron recolectadas con botella Niskin (5 L) a 5, 25, 45 y 7...
The bioeconomy as a new
economic model offers potential opportunities
for economic revival in post-pandemic times; in
the face of continuing challenges and needs to
be met within multiple sectors, including sensitive
sectors such as food and health, the generation
of new opportunities is a priority. Coastal marine
resources have been continu...
ABSTRACT: The spatial and temporal distribution of the ichthyoplankton of the caño Manamo, identifying the spawning areas. Ichthyoplankton samples were collected bimonthly from December 2010 to October 2011, along the caño at seven stations, covering the upper, middle, lower delta regions, and the marine-estuarine. The stations were sectorized acco...
In caño Manamo delta of the Orinoco was studied of the ichthyoplankton the abundance and spatial and temporal distribution, establishing relationships between the eggs and fish larvae with some physicochemical variables. Ichthyoplankton samples collected from December 2010 until October 2011, in six workstations, covering the region of the delta up...
Spatio-temporal variations in the occurrence, abundance and distribution of diatoms (April 2008 to March 2010) have been studied from the coastal and near-shore waters along the Karachi coast, northern Arabian Sea. Pakistani coastal waters appear to receive nutrient-rich waters during winter (NEM) and thus showed diatom peaks during NE monsoon. A t...
Las XLIV Jornadas Nacionales de Biología, fueron las primeras Jornadas enteramente virtuales, el evento contó con la participación de 114 asistentes, seis charlas magistrales y 60 ponentes de prestigiosas instituciones nacionales y extranjeras. Fue organizado por la Sociedad Ecuatoriana de Biología y la Pontificia Universidad Católica del Ecuador.
El fitoplancton es un indicador excelente de la calidad del agua y de la condición del ambiente. Con la finalidad de identificar las especies de microalgas indicadoras de las condiciones hidrográficas de la zona marina y costera de una playa ubicada en la zona central de Venezuela y la variabilidad espacial y temporal de su estructura comunitaria,...
Dentro del zooplancton, los copépodos son uno de los principales consumidores de fitoplancton. Por tanto, estos organismos son potenciales consumidores de las especies de dinoflagelados que producen toxinas. En este sentido, se estudiaron los efectos de las floraciones de algas nocivas (FAN) sobre los copépodos de la zona oriental del golfo de Cari...
In the Caribbean Sea, the winged oyster Pteria colymbus represents a promising resource for food and pearl production. The goal of the present study was to determine the influence of environmental variables generated by the seasonal coastal upwelling on the fatty acid profile (FAP) of the winged oyster Pteria colymbus. Changes in fatty acid (FA) le...
RESUMEN: Mediante técnicas de microscopía electrónica de barrido y microscopía óptica, se llevó a cabo un estudio taxonómico de dinoflagelados planctónicos del orden Dinophysales de las costas orientales de Venezuela (Sur del Mar Caribe). El orden estuvo representado por las familias Amphisoleniaceae, Oxyphysaceae y Dinophysiaceae, siendo esta últi...
Resumen: En las comunidades zooplanctónicas, la sinergia entre los factores ambientales y biológicos puede favorecer la presencia y/o ausencia de ciertas especies o grupos taxonómicos. Se analizó la abundancia, composición general y variación temporal del zooplancton en dos ambientes neríticos (ensenada de Turpialito e islotes Los Lobos) del norori...
RESUMEN: El fitoplancton es una comunidad biótica que junto al fitobentos constituyen la base de las tramas tróficas acuáticas, siendo responsables de la mayor parte de la producción primaria oceánica. Conocer su composición permite complementar las evaluaciones de calidad del agua, ya que son indicadores excelentes de las condiciones ambientales....
Se estudió la variación espacial y temporal del micro y mesozooplancton en la parte interna de la bahía de Mochima en época de sequía, se efectuaron muestreos diarios empleando una bomba de succión, a intervalos de 6 horas (04:00, 10:00, 16:00 y 22:00) durante una semana, a tres profundidades (0, 5 y 10 m). Se midieron variables hidrológicas e hidr...
Los copépodos son el grupo más numeroso del zooplancton en los sistemas costeros tropicales; ellos se ven afectados principalmente
por los gradientes de salinidad, como ocurre en el sector oriental del golfo de Cariaco. El propósito de este estudio fue estudiar las
variaciones temporales y espaciales de la estructura de la comunidad de copépodos du...
En comunidades de la costa central de Venezuela, ocurren intoxicaciones masivas, que ocasionan mortandad de peces y efectos sobre la salud de personas y animales domésticos. Para entender la dinámica de estos fenómenos, se requiere conocer la estructura comunitaria del fitoplancton durante los eventos. Con apoyo de la comunidad, se captaron muestra...
The United States is a major world producer and consumer of copper and its compounds. Most of the copper produced is used to manufacture electrical equipment, pipe, and machinery. Copper compounds are also used in agricultural fertilizers, in veterinary and medical products, in the food industry, and as a preservative of wood and other materials. C...
The Chongon Colonche Mountain Range is located within the Tumbes-Choco-Magdalena region, known for its high diversity and endemism, which faces deforestation and presents biological information gaps as conservation problems. The composition, structure and diversity of the woody flora were determined in two localities, Loma Alta and Dos Mangas, thro...
Aquatic chemistry has become a rewarding and substantial area of research that is attracting many scientists. Its literature has changed from a compilation of composition tables to studies of chemical reactions that take place within aquatic environments. Given that the rivers deliver to the world’s oceans most of their dissolved and particulate co...
Aquatic chemistry has become a rewarding and substantial area of research that is attracting many scientists. Its literature has changed from a compilation of composition tables to studies of chemical reactions that take place within aquatic environments. Given that the rivers deliver to the world’s oceans most of their dissolved and particulate co...
The objective was to analyze the composition, structure and floristic diversity of Loma Alta at three altitudes (164, 300, and 466 m asl) following the Gentry method. We registered 283 species, with Fabaceae (26 spp.) being the most specious family; of these, 101 spp. (36%) are endemic and 87 spp. (31%) belong to some conservation status (including...
Invasive species are of signifi cant concern, especially in mega-diverse countries, because they cause negative
eff ects such as loss of native biodiversity, ecological alterations, disease spread, and impacts on economic development and
human health. In mainland Ecuador, information on invasive invertebrates in marine ecosystems is scarce. The obj...
Macrocystis pyrifera is ecologically and commercially important seaweed; therefore, it is a well-studied species in terms of its morphology, geographical distribution and its economic uses in Perú. However, research on its genetic structure is scarce. A recent study conducted along the Southeastern coast of the Pacific, concluded that Macrocystis h...
Introducción:
La Reserva Marina El Pelado es una importante área protegida de la costa ecuatoriana debido a la conectividad que tiene con otras áreas marinas protegidas.
Objetivo:
Identificar patrones de variación espacial en la estructura comunitaria del macrobentos de fondos someros.
Materiales y Métodos:
Se muestrearon diez sitios en la zona c...
The National Committee for the Study of the El Niño Phenomenon of Ecuador (ERFEN-Ecuador), has developed two cruises in September 2016 and October 2017. The study area includes the Equatorial Front from continental Ecuador to Galapagos (2 ° N to 3 ° S) subdivided into 4 sections (92 °, 89 °, 86 ° and 82 ° W). The environmental parameters, such as t...
Macrocystis pyrifera is ecologically and commercially important seaweed; therefore, it is a well-studied species in terms of its morphology, geographical distribution and its economic uses in Perú. However, research on its genetic structure is scarce. A recent study conducted along the Southeastern coast of the Pacific, concluded that Macrocystis h...
Coastal phytoplankton is affected by natural and anthropic processes. To analyze the influence of some of these processes, the spatial and temporal distribution of phytoplankton in the Gulf of Cariaco, Sucre state, was evaluated. Samples (0-10 m) were collected with Niskin bottles (5 L) in seven stations between February 2014 and January 2015. Tran...
The study of zooplankton in the coastal zone is fundamental to understand ecological processes. The coastal zone Arapito - Santa Fe, located in the Mochima National Park, Sucre state, Venezuela, is considered an area of great natural importance and therefore the study on zooplankton was carried upon. For this reason, the composition and community s...
The abundance and spatial-temporal distribution of ichthyoplankton in Manamo Creek, Orinoco Delta establishing relationships between the eggs and fish larvae with some physicochemical variables in samples collected from December 2010 to October 2011 at six workstations recorded that the ichthyoplankton community was formed by Engraulidae (90%); Clu...
Aquatic chemistry has become a rewarding and substantial area of research that is attracting many scientists. Its literature has changed from a compilation of composition tables to studies of chemical reactions that take place within aquatic environments. Given that the rivers deliver to the world’s oceans most of their dissolved and particulate co...
El río Manzanares tiene una relación histórica con la ciudad de Cumaná, ya sea por su papel
ecológico, cultural y económico pero también por los impactos ambientales que han afectado negativamente el estado de conservación de este hidrosistema. Se efectuó una actualización de la información sobre el estado de conservación del río Manzanares y sus t...
ABSTRACT
The Gulf of Guayaquil is the main tropical estuary of the Southeast Pacific, has ecological and economic importance. Its oceanographic variability
is regulated by seasonal fluctuations in wet and dry seasons. The study area is a fixed station northeast of Santa Clara Island in the Gulf of
Guayaquil, in a water column (0-75m), with a monthl...
En la provincia del Guayas se encuentra la mayor población urbana del Ecuador con 3 645 483 habitantes y durante la última década el crecimiento urbano se ha concentrado en el cantón Durán. En ese sentido, las actividades antrópicas se han derivado en urbanismo, al desarrollo agrícola y el industrial, por lo que se han alterado las condiciones norm...
The CARIACO (Carbon Retention in a Colored Ocean) Ocean Time-Series Program station, located at 10.50°N, 64.66°W, observed biogeochemical and ecological processes in the Cariaco Basin of the southwestern Caribbean Sea from November 1995 to January 2017. The program completed 232 monthly core cruises, 40 sediment trap deployment cruises, and 40 micr...
RESUMEN Los índices de estado trófico son importantes herramientas usadas en ecología para establecer clasificaciones tróficas, ya que son robustos y proveen información apropiada para implementar criterios de manejo de la zona costera. Con el objetivo de diagnosticar el estado trófico de una laguna costera tropical hipersalina denominada Las Marit...
Se analizó la composición y abundancia del zooplancton de la laguna El Morro en la isla de Margarita, Venezuela, durante el periodo de surgencia (marzo-mayo 2011) y de relajación (junio-agosto 2011). Las muestras fueron recolectadas en 6 estaciones de las diferentes zonas de la laguna. Se realizaron calados con una red de plancton de 333 µm durante...
The nitrogen and phosphorus enrichment is
the main responsible for changes in the trophic status of
coastal lagoons. Hence, we have evaluated the distribution
of these nutrients, chlorophyll a and variables that
directly affect them (temperature, salinity and dissolved
oxygen), in the hypersaline coastal lagoon Las Marites,
located in Margarita Isl...
Urban growth in coastal areas has led to eutrophication, which in turn has caused the accumulation of organic in
the estuarine system of the gulf of Guayaquil. In this scenario trophic status was determined using the Karydis
index in three zones established according to hydrographic affinity one mile from the coastal margin of the
province of El Or...
El desarrollo poblacional alrededor de los ecosistemas costeros puede generar el deterioro de los mismos. En esta investigación se analiza el crecimiento poblacional en las adyacencias de la laguna de Las Marites, isla de Margarita, Venezuela y sus posibles implicaciones en la calidad del agua, a partir de los censos poblacionales oficiales. Se obs...
El desarrollo poblacional alrededor de los ecosistemas costeros puede generar su deterioro. En esta investigación se analiza el crecimiento poblacional en las adyacencias de la laguna de Las Marites, isla de Margarita, Venezuela y sus posibles implicaciones en la calidad del agua, a partir de los censos poblacionales oficiales. Se observó un increm...
Cambios estructurales del mesozooplancton en relación a las condiciones hidrográficas en el golfo de Cariaco, Venezuela Structural changes of mesozooplankton in relation to hydrographic conditions in the Gulf of Cariaco, Venezuela Resumen Se realizó el análisis de la variación temporal y espacial del mesozooplancton con respecto a su abundancia y c...
The hydrological balance and the flow of materials in the coastal lagoons are strongly dependent on the exchange with other bodies of water. The evaluation of these exchanges is an important tool for the management of these ecosystems. This study aimed to estimate the interaction between a tropical coastal lagoon, Las Marites, located in Margarita...
En el golfo de Guayaquil se concentra la mayor actividad pesquera y acuícola del Ecuador; sin embargo, la carga de nutrientes provenientes de actividades antrópicas, afectaría la calidad del agua y diversidad de recursos pesqueros. Con el propósito de determinar el estado trófico de la zona costera y estuario interior, se recolectaron muestras de a...
The nitrogen and phosphorus enrichment is the main responsible for changes in the trophic status of coastal lagoons. Hence, we have evaluated the distribu-tion of these nutrients, chlorophyll a and variables that directly affect them (temperature, salinity and dissolved oxygen), in the hypersaline coastal lagoon Las Marites, located in Margarita Is...
The study is about the composition, abundance and distribution of potentially toxic dinoflagellates were studied in two sandy beaches of the island of Margarita (SE Caribbean
An analysis of the temporal and spatial variation of the mesozooplankton with respect to its abundance and
composition was carried out in the eastern zone of the Gulf of Cariaco, Venezuela. Monthly samples were
collected (June 2009 to May 2010) from nine stations distributed in three zones. A standard plankton net of
333 μm was used. Temperature, s...
The present study examines the influence that environmental variables exerted on changes in condition index (CI), shell height (SH—dorsal-ventral axis) and soft tissue mass increments (STM) of the winged oyster Pteria colymbus in suspended culture during periods of upwelling (December to April) and non-upwelling (August to November) in the Cariaco...
The carbon regeneration in the water column of the Cariaco Basin (Venezuela) was investigated using a regression model of total alkalinity (TA) and the concentration of total inorganic carbon (TCO2). Primary productivity (PP) was determined from the inorganic carbon fraction assimilated by phytoplankton and the variation of the 22 and 23ºC isotherm...
The Manzanares River is one of the most important bodies of water in northeastern Venezuela. However, avast influx of industrial and domestic sewage from farm and urban dwellings enters the river without much control by thepertinent authorities. To ascertain the environmental quality of the river 45 sampling sites were set throughout the areacompri...
Con la finalidad de estudiar la respuesta ambiental del mesozooplancton en el golfo de Cariaco, se analizó la biomasa, composición y abundancia en octubre 2010 (época de relajación) y abril 2012 (época de surgencia). Las muestras fueron recolectadas en 19 estaciones a todo lo largo del golfo. Se realizaron calados oblicuos con una red bongo durante...
Alkaloids, polyphenols, cyanogenic glycosides and saponins are among the main chemical compounds synthesized by plants but not considered essential for their basic metabolism. These compounds have different functions in plants, and have been recognized with medicinal and pharmacological properties. In this research, concentrations of the mentioned...
The sardine (Sardinella aurita) is a species that has been
exploited artisanally for 74 years in areas near the coasts of the
states of Sucre and Nueva Esparta, Venezuela, where biological
productivity is generally high due to upwelling events. Like all
coastal pelagic resources, sardines present seasonal
fluctuations in its biomass, due to biologi...
La sardina (Sardinella aurita) es una especie que se explota artesanalmente desde hace 74 años en zonas cercanas a las costas de los estados Sucre y Nueva Esparta, Venezuela, donde la productividad biológica es generalmente alta debido a eventos de surgencia. Como todos los recursos pelágicos costeros, la sardina presenta fluctuaciones estacionales...
The specie Perna viridis is native to the Indo-Pacific region and introduced in 1993 in the Venezuelan coast of Trinidad from exotic species. This research aimed to differentiate morphologically and genetically modified organisms of this invasive species from five areas in the northeastern coast of Venezuela. The trends of morphological variation a...
La ostra perla es un bivalvo muy abundante en las costas nororientales de América del Sur, formando densos bancos en el Mar Caribe, donde es explotada para su comercialización, siendo un recurso valioso en el nororiente de Venezuela. Con la finalidad de aportar información sobre Pinctada imbricata en la laguna de La Restinga, se estimó el crecimien...
