A5055017064- Aquaculture Nutrition and Growth
- Marine Bivalve and Aquaculture Studies
- Aquaculture disease management and microbiota
- Invertebrate Immune Response Mechanisms
- Marine and fisheries research
- Crustacean biology and ecology
- Vibrio bacteria research studies
- Cephalopods and Marine Biology
- Physiological and biochemical adaptations
- Plant and soil sciences
- Environmental Toxicology and Ecotoxicology
- Algal biology and biofuel production
- Ocean Acidification Effects and Responses
- Marine Biology and Ecology Research
- Fish Biology and Ecology Studies
- High Altitude and Hypoxia
- Calcium Carbonate Crystallization and Inhibition
- Marine Biology and Environmental Chemistry
- Insect symbiosis and bacterial influences
- Wastewater Treatment and Nitrogen Removal
- Agricultural and Food Production Studies
- Silkworms and Sericulture Research
- Coral and Marine Ecosystems Studies
- Fish Ecology and Management Studies
- Soil Science and Environmental Management
Escuela Superior Politecnica del Litoral
2016-2025
Instituto de Investigacións Mariñas
2016
Instituto Nacional de Investigación en Salud Pública
2000
The tolerance of Litopenaeus vannamei larvae to increasing concentrations total ammonia nitrogen (TAN) using a short-term static renewal method at 26°C, 34 g L−1 salinity and pH 8.5 was assessed. median lethal concentration (24 h LC50) for TAN in zoea (1-2-3), mysis (1-2-3) postlarvae 1 were, respectively, 4.2-9.9-16.0; 19.0-17.3-17.5 13.2 mg L−1TAN (0.6-1.5-2.4; 2.8-2.5-2.6 1.9 NH3-N). LC50 values obtained this study suggest that zoeal post-larval stages are more sensitive 24 exposure than...
Some yeast strains have been proposed as probiotics to improve the health of cultured fish. Cobia is a tropical benthopelagic fish species with potential for marine aquaculture; however, one main limitations its large-scale production high mortality larvae. In this study, we evaluated probiotic autochthonous yeasts from intestines cobia. Thirty-nine isolates were recovered intestinal mucosa 37 adult healthy cobia by culture methods. Yeasts identified sequencing ITS and D1/D2 regions 28S rRNA...
Members of the bivalve molluscan family Spondylidae were very important elements in world view pre-Hispanic cultures America, and today remain as symbols culture heritage contemporary society. In recent decades, given importance they have for crafts jewelry, well fisheries gastronomy, their exploitation has caused a drastic decrease natural populations leading to restrictions fishing. present review, data about Spondylus species eastern Pacific Ocean, describing symbolism, taxonomy,...
The tropical rock oyster Striostrea prismatica is a commercially valuable bivalve mollusc found along the Pacific coast. A laboratory study was conducted to investigate broodstock acclimation at two temperatures (28.3 ± 0.9°C and 22.2 0.9°C) fed combined microalgae diet (Chaetoceros gracilis Isochrysis galbana 150 cells/µL/day 100 cells/µL/ day, respectively) for 7 wk, seven treatments stimulate spawning of individuals acclimated both temperatures. Treatments induce consisted 10°C...
Abstract Chemical and physical analyses were conducted on bottom soil samples from 74 brackish‐water ponds representing 40 shrimp farms in Ecuador. Most had soils with pH > 6 total carbon concentrations < 2.5%. Carbon was mostly organic form, for the average concentration of carbonate 0.06%. The C: N ratio 8 to 10 2.5% carbon. In built former mangrove areas, ratios 25 30. Ponds areas also tended be high sulfur low pH. Lack correlation between suggested that most inorganic presumably...
This study investigated the effect of intermittent feeding on water quality, occurrence skin parasites, feed consumption, and growth performance juveniles (102.7 ± 5.1 g) longfin yellowtail, Seriola rivoliana. Fish were exposed for 89 days to six different regimes: continuous daily fed one or twice a day (treatment 24R1 24R2); 2-day fasting refed once 1 48R1 48R2); 3-day 96R1 96R2). Water quality was not affected by strategies. Likewise, condition factor up 48 hr. On other hand, lowest...
The growth, survival and influence of environmental factors were analysed in two cohorts cultured Pteria sterna Ayangue Bay, Province Santa Elena, Ecuador (tropical Eastern Pacific). Juveniles representing I II (8.4 ± 0.54 5.0 0.17 mm dorso-ventral axis) deployed November 2015 February 2016, grown pearl nets suspended a long line for 12 10 months respectively. stocking density was monthly bi-monthly reduced during sampling individuals to determine growth shell axis, dry mass shell, soft...
The reproductive cycle of the rock oyster Striostrea prismatica was determined at two fishing areas, General Villamil and Ayangue (located on southern coast Ecuador), between May 2012 April 2013. Monthly sampling campaigns were performed both locations. tissues histologically examined to determine gonadal index (GI), oocyte development, follicular area coverage sex ratio. Surface seawater temperature, salinity chlorophyll a concentration measured during samplings. Our results show similar...
White spot syndrome virus (WSSV) is one of the most virulent pathogens cultured penaeid shrimp. Several control strategies are used commonly to mitigate economic losses caused by pathogen, such as application antiviral products at farm level. One practical method for screening potential anti-WSSV through challenge tests. Therefore, it essential develop simple, reproducible and effective bioassays able simulate specific mortality levels. The purpose this study was a simple bioassay that...
The bacterial community of the intestinal microbiota influences many host functions, and similar effects have been recently reported for fungal (mycobiota). Cobia is a tropical fish that has studied its potential in marine aquaculture. However, study underreported mycobiota not investigated. We analyzed gut profile present mucosa reared adult cobias fed two diets (frozen pieces (FFPs) formulated feed (FF)) 4 months by sequencing 16S rRNA (V3-V4) internal transcribed spacer-2 (ITS2) regions...