A5042302534- Marine and fisheries research
- Fish biology, ecology, and behavior
- Ichthyology and Marine Biology
- Fish Biology and Ecology Studies
- Coral and Marine Ecosystems Studies
- Coastal and Marine Management
- Marine Biology and Ecology Research
- Isotope Analysis in Ecology
- Marine and coastal ecosystems
- Fish Ecology and Management Studies
- Hydropower, Displacement, Environmental Impact
- Tailings Management and Properties
- Aquatic life and conservation
- Parasite Biology and Host Interactions
- Marine Ecology and Invasive Species
- Aquaculture Nutrition and Growth
- Aquatic Ecosystems and Phytoplankton Dynamics
- Water Quality and Pollution Assessment
- Mine drainage and remediation techniques
- Marine animal studies overview
- Marine Bivalve and Aquaculture Studies
- Coastal wetland ecosystem dynamics
- Cephalopods and Marine Biology
- Microplastics and Plastic Pollution
- Physiological and biochemical adaptations
Universidade Federal do Rio de Janeiro
2014-2024
Scientific Electronic Library Online
2014
Universidade Federal de São Carlos
2005
The Santos Basin (SB) is the main petroliferous basin in Brazilian continental margin and one of most studied marine areas Brazil. However, historical data suggest that new efforts should be carried out to acquire quantitative biological data, especially deep sea, establish baseline essential ocean variables different ecosystems for future monitoring programs. energy company Petrobras planned executed 24 oceanographic cruises over a period 2 years assess benthic (SANSED cruise) pelagic...
Studies were carried out to find qualitative and quantitative temporal variations in fish larvae relate seasonal, diurnal tidal cycles the density of larvae. Sampling was performed at one station, during two three-day periods September 1995 March 1996. Samples collected ebb flood tides,in oblique hauls using a bongo net 500 µm mesh size. A total 42 taxa identified. The families Engraulidae (Cetengraulis edentulus, Anchoa lyolepis) Clupeidae (Harengula jaguana) had high mean densities...
A baía de Guanabara é um dos ecossistemas tropicais mais eutrofizados do mundo. Sua hidrobiologia varia segundo tutor temporal definido pelo verão chuvoso e duplo gradiente espacial, vertical horizontal condicionado pela influência da maré efluentes continentais. O impacto antrópico manifesta-se nas áreas internas por elevados teores em amônia (? 650 mM) fósforo 308 mM ) baixa transparência (
Studies on the vertical distribution of larval fish in water masses along Brazilian coast are very rare. The present study aimed to identify occurring surface (1 m) layer and at depth four Campos Basin, southeastern Brazil: South Atlantic Central Water (SACW) (250 m), Antarctic Intermediate (AAIW) (800 Upper Circumpolar Deep (UCDW) (1,200 North (NADW) (2,300 m). Material used this was obtained 2009 through nocturnal horizontal stratified hauls using a Multinet (500 μm mesh size) during both...
This study analyzes the occurrence and distribution of lanternfish (Myctophidae) larvae along Brazilian coast (12-22ºS) between 200 m surface. Three cruises were conducted during spring/1998, winter/1999 autumn/2000. A total 3,394 identified representing 27 species Lepidophanes guentheri (Goode & Bean, 1896) was most abundant. Most taxa in postflexion stage. Myctophid more numerous winter. distributed widely from 12-22ºS, including some seamounts, occurred mainly outside 1,000 isobath....
The structure and seasonal dynamics of larvae the Gobiidae family in Mucuri Estuary (Bahia, Brazil) were studied for nine consecutive years. Sampling was conducted at three stations lower estuary channel, between 2002 2010, relation to season, day night tidal variations. A total 5802 larvae, representing 15 taxa (12 species morphotypes), collected during this time. highest mean ± s.d. density fish 54·7 79·8 100 m(-3), recorded flood tide sampling. Ctenogobius boleosoma most abundant (68%),...
Although leptocephali are very conspicuous in plankton samples little is known about their occurrence and distribution along the Brazilian coast. Therefore, present study aimed to identify pattern eastern coast, which limited north by Real River (12°S) south São Tomé Cape (23°S). Samples were collected during three oceanographic cruises conducted on October–December 1998, May–July 1999 March–May 2000. Samplings done using a bongo net with mesh apertures of 330 500 µm. The was towed obliquely...
A study was conducted over eight consecutive days in February 2010 which daily variations the vertical distributions of heterotrophic bacteria, mesozooplankton and ichthyoplankton at 1–1200 m South-western Atlantic Ocean were investigated. Diurnal nocturnal samples collected an oceanographic station four regional depths: Tropical Water (TW) (1 m), South Central (SACW) (250 Antarctic Intermediate (AAIW) (800 m) Upper Circumpolar Deep (UCDW) (1200 m). Bacterial, larval fish densities...
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Two larval Symphysanodon, collected off the coast of Rio de Janeiro, southern Brazil (at 22º32’50.0” S, 040º04’09.0” W), beyond 1,000 m isobath, are first specimens monotypic family Symphysanodontidae to be reported from western South Atlantic Ocean. We unable assign larvae a described species and entertain idea that Brazilian material may represent an undescribed species.
This work aimed to know the tolerance mechanisms through salinity variation by Na+ K+ - ATPase and Mg++ enzymes encountered in gills of Poecilia vivipara. In field, presence this species was observed salinities 0 28‰. laboratory, these fish were maintained aquarium with mean 30‰ positive responses obtained. Some adult specimens, collected a lagoon Coqueiros Beach, utilized as matrixes. experiments specimens used those born test aquarium. For each studied three replicates made for one. The...
There are still only a few studies related to Bregmacerotidae larvae in Brazil, although these frequently collected oceanic ichthyoplankton samples. Thus this study analyzes the occurrence and abundance of Bregmaceros along Brazilian central coast describes larval characteristics. During three oceanographic cruises samples were between Real River (12°S) São Tomé Cape (22°S). Oblique hauls conducted from maximum depth 200 m, using bongo nets 330- 500-μm mesh size. Among 951 bregmacerotids...
This study aims to describe the spatial and temporal distribution patterns of Gobiidae larvae at a tropical estuarine system in south-east Brazil (Macaé). The samples were collected six stations, through oblique hauls using bongo net (330 µm mesh size), coupled flowmeter, during night ebb flood tides March, July October 2006 February 2007. In Macaé River estuary was total 1,234 larvae, representing nine taxa. highest densities occurred river mouth tide rainy season. most abundant groups...
This study describes the morphology, morphometry and meristic characters of larval juvenile Tatia intermedia collected in middle Tocantins River some its tributaries. Six larvae T. were examined they have a moderately elongate body, head slightly dorso-ventrally depressed with convex snout, small round eyes subterminal mouth. In five stages observed, eye are relatively smaller than stage snout remains mouth becomes terminal.
In November 2015, the Fundão dam located in southeast Brazil collapsed, releasing approximately 50 million cubic meters of slurry contaminated with metals into Doce River, reaching marine coastal area. The main objective this study was to analyze effect mud plume after collapse on abundance, composition, and diversity ichthyoplankton during monitoring period one year. We also aimed verify impact River discharge, meteoceanographic events, environmental factors abundance fish eggs larvae....