J. Figueiredo da Silva, and J. Figueiredo da Silva, and R. W. Duck, and T. S. Hopkins, and J. M. Anderson

The morphological and climatic conditions of the Atlantic coast of northern Portugal result in a prevailing upwelling circulation over the continental shelf. A submarine outfall releases wastewater into the ocean c. 3 km directly offshore (at ∼16 m water depth) from S. Jacinto, 5 km to the north of the inlet to the estuarine coastal lagoon system of the Ria de Aveiro. The buoyant plume has a distinctive reddish brown colour and is clearly visible at the water surface. The transport and dispersio...

S Dey, and D Bhattacharya, and S Roy, and S D Nadgir, and A Patil, and S D Kholkute

Shewanella algae is an emerging bacteria rarely implicated as a human pathogen. Previously reported cases of S. algae have mainly been associated with direct contact with seawater. Here we report the isolation of S. algae as the sole etiological agent from a patient suffering from acute gastroenteritis with bloody diarrhoea. The bacterium was identified by automated identification system and 16S rRNA gene sequence analysis. Our report highlights the importance of looking for the relatively rare ...

A. M. Huerta-Casas, and D. J. Webb

The transport and storage of heat by the ocean is of crucial importance because of its effect on ocean dynamics and its impact on the atmosphere, climate and climate change. Unfortunately, limits to the amount of data that can be collected and stored mean that many experimental and modelling studies of the heat budget have to make use of mean datasets where the effects of short term fluctuations are lost. <br><br> In this paper we investigate the magnitude of the resulting errors by making use o...

D. N. Arabelos, and D. Z. Papazachariou, and M. E. Contadakis, and S. D. Spatalas

The tides for the Mediterranean Sea are described through a high resolution model (MEDI10) developed by assimilation of tide-gauge data and T/P data into a barotropic ocean tide model. Tidal parameters from 56 coastal tide-gauge stations around the Mediterranean for eight principal constituents: M2, S2, N2, K2, K1, O1, P1 and Q1 and from 20 stations for M2, S2, K1, O1 are included in the model. TOPEX/Poseidon data with all corrections applied except for the ocean tides and bathymetry from TOPO 1...

Alexandre Leme Godoy-Santos, and Rafael Trevisan, and Túlio Diniz Fernandes, and Maria Cristina L. G. dos Santos

Yoshimine Ikeda

Um aspecto importante a ser apontado no presente trabalho ê o fato de se ter acompanhado de um modo ininterrupto, durante 10 dias, as anomalias nas distribuições das propriedades físicas da água do mar. Os resultados experimentais obtidos na região costeira a oeste de Cabo Frio durante esse pe ríodo mostraram a preponderância dos processos advectivos e difusivos que alteram a distribuição da temperatura e da salinidade na superfície do mar. Essa anomalia pode ser indicada por nuvens do tipo cúmu...

Luiz Diego Marestoni, and Carlos R Appoloni, and Jair Romeu Eichlt

In this paper we propose the concept of Minimum Level of Component Discrimination (NMDC) to determine the components discrimination in a biphasic mixture. A mathematical modeling followed by experimental corroboration illustrates the concept for different mixtures using transmission measurements of five lines from a 241Am source. Based on the simulations, minimum discrimination tables were done. These discrimination tables are the ideal theoretical predictions to lead experimental measurement, s...

R. A. Ibrayev, and E. Özsoy, and C. Schrum, and H. İ. Sur

A three-dimensional primitive equation model including sea ice thermodynamics and air-sea interaction is used to study seasonal circulation and water mass variability in the Caspian Sea under the influence of realistic mass, momentum and heat fluxes. River discharges, precipitation, radiation and wind stress are seasonally specified in the model, based on available data sets. The evaporation rate, sensible and latent heat fluxes at the sea surface are computed interactively through an atmospheri...

Rafael de Almeida Tubino, and Cassiano Monteiro-Neto, and Luiz Eduardo de S. Moraes, and Eduardo Tavares Paes

Artisanal fisheries in the coastal zone of Itaipu-RJ play an important role in the local market, but little is known about production and productivity of the fisheries. From April 2001 to March 2003, we monitored a total of 618 landings from the beach-seine (99), the gill nets ("corvineira" - 331, "linguadeira" - 40 and "rede alta" - 25), the hook and line (98), the squid jigging (17), and the spear fishing and trap fisheries (five and three, respectively). The total monitored production was 218...

G. Shaffer

The DCESS (Danish Center for Earth System Science) Antarctic Ice Sheet (DAIS) model is presented. Model hindcasts of Antarctic ice sheet (AIS) sea level equivalent are forced by reconstructed Antarctic temperatures, global mean sea level and high-latitude, ocean subsurface temperatures, the latter calculated using the DCESS model forced by reconstructed global mean atmospheric temperatures. The model is calibrated by comparing such hindcasts for different model configurations with paleoreconstru...

George B Mcmanus, and Donald eSchoener, and Katharine eHaberlandt

Simultaneous use of both heterotrophic and autotrophic metabolism (mixotrophy) is common among protists. Strombidium rassoulzadegani is a planktonic mixotrophic marine ciliate that saves chloroplasts from its algal food and obtains a nutritional subsidy via photosynthesis. Cultures from the northeast, northwest, and southwest Atlantic Ocean show similar numerical response parameters (maximum growth rate, food concentration at which growth is half its maximum, and threshold food concentration f...

Jürgen Hampel, and Cordula Kropp, and Michael M. Zwick

Dieser Artikel thematisiert die Nachhaltigkeit des autonomen Fahrens. Die Daten des TechnikRadars, einer für die deutsche Wohnbevolkerung repräsentativen Bevölkerungsumfrage, aktuell zur Digitalisierung, erlauben es, methodisch belastbar Aussagen uber die Wahrnehmung des autonomen Fahrens zu machen. Der Artikel fügt dem bislang vorrangig expertenbasierten Diskurs explizit die Stimme der Öffentlichkeit hinzu. Obwohl das System des autonomen Fahrens noch nicht hinreichend definiert ist, können fü...

Blaes AH, and Mulrooney DA, and Vogel RI, and Solovey A, and Hebbel R, and Peterson BA, and Neglia JP, and Biewen C, and Konety SH, and Duprez DA

Anne H Blaes,1 Daniel A Mulrooney,2 Rachel Isaksson Vogel,3 Anna Solovey,1 Robert Hebbel,1 Bruce A Peterson,1 Joseph P Neglia,4 Carter Biewen,5 Suma H Konety,6 Daniel A Duprez6 1Division of Hematology/Oncology, University of Minnesota, Minneapolis, MN, USA; 2St Jude Children&rsquo;s Research Hospital, Memphis, TN, USA; 3Division of Gynecology/Oncology, University of Minnesota, MN, USA; 4Department of Pediatrics, University of Minnesota, MN, USA; 5Division of Pediatrics, University of California ...

Meng Wang, and Sheng Li Hong, and Qing Miao, and Rong Bian Guang

Ship motion in the sea is a complex nonlinear kinematics. The hydrodynamic coefficients of ship model are very difficult to accurately determine. Establishing accurate mathematical model of ship motion is difficult because of changing random factors in the marine environment. Aiming at seeking a method of control to realize ship positioning, intelligent control algorithms are adopt utilizing operator's experience. Fuzzy controller and the neural network controller are respectively designed. Thro...

Bazyli Czeczuga, and Mirosława Orłowska, and Lucyna Woronowicz

In the waters (river, pond, lakes) of the north-eastern region of Poland the presence 16 rare and unknown from Poland species of the aquatic Hyphomycetes was noted.

Ricardo eBeiras

The environmental monitoring strategy termed ecosystem-based approach (EBA) underlines the obvious benefits of managing natural resources on a holistic level, and it is particularly invoked for the rational and sustainable management of aquatic resources. However, when coming to implement EBA into monitoring schemes, such as those derived from the implementation of the European legislation concerning water quality, difficulties inherent to the complex and dynamic nature of ecosystems arise, incl...

Ty James Samo, and Ty James Samo, and Steven eSmriga, and Steven eSmriga, and Francesca eMalfatti, and Francesca eMalfatti, and Byron Pedler Sherwood, and Byron Pedler Sherwood, and Farooq eAzam

Marine bacterial and archaeal communities control global biogeochemical cycles through nutrient acquisition processes that are ultimately dictated by the metabolic requirements of individual cells. Currently lacking, however, is a sensitive, quick, and quantitative measurement of activity in these single cells. We tested the applicability of copper (I)-catalyzed cycloaddition, or click, chemistry to observe and estimate single-cell protein synthesis activity in natural assemblages and isolates o...

Oscar Barroso Vitorino Júnior, and Kelven Stella Lopes, and Fernando Mayer Pelicice

Brycon nattereri is a threatened fish species restricted to small headwater rivers of the Paraná, São Francisco and Tocantins rivers. This species has been extirpated from many sites, and little is known about its ecology. In this sense, the present study investigated temporal variations in the occurrence, abundance and length structure of B. nattereri in the Dois Irmãos river, a small headwater river from the Tocantins river basin. Samples were taken monthly between January and November of 2009...

J. Lehtiranta, and S. Siiriä, and J. Karvonen

Pairs of consecutive C-band synthetic-aperture radar (SAR) images are routinely used for sea ice motion estimation. The L-band radar has a fundamentally different character, as its longer wavelength penetrates deeper into sea ice. L-band SAR provides information on the seasonal sea ice inner structure in addition to the surface roughness that dominates C-band images. This is especially useful in the Baltic Sea, which lacks multiyear ice and icebergs, known to be confusing targets for L-band sea ...

Shuji eTsuji, and Teruko eYuhi, and Kazumi eFuruhara, and Shogo eOhta, and Yuto eShimizu, and Haruhiro eHigashida

Seven male children with autism spectrum disorder (ASD), aged 8 – 12 years, attending special education classrooms for ASD and disabled children, were assigned to receive touch therapy. Their mothers were instructed to provide gentle touch in the massage style of the International Liddle Kidz Association. The mothers gave massages to their child for 20 minutes every day over a period of 3 months followed by no massage for 4 months. To assess the biological effects of such touch therapy, saliva w...

A. C. Bliss, and M. R. Anderson

An updated version (Version 3) of the Snow Melt Onset Over Arctic Sea Ice from SMMR (Scanning Multichannel Microwave Radiometer) and SSM/I-SSMIS (Special Sensor Microwave/Imager-Special Sensor Microwave Imager/Sounder) Brightness Temperatures data set is now available. The data record has been reprocessed and extended to cover the years 1979–2012. From this data set, a statistical summary of melt onset (MO) dates on Arctic sea ice is presented. The mean MO date for the Arctic Region is 13 May (1...

Edivaldo Bento Normandes, and Rodrigo Egydio Barreto, and Robson Francisco Carvalho, and Helton Carlos Delicio

In this study was tested the effect of betaine on the growth performance of the piauçu fish. For this, twenty-one fish (mean &plusmn; SD: body weight: 14.9 &plusmn; 1.3 g) were randomly distributed in one out of three experimental treatments (n = 7 each; 1 fish/aquarium): without betaine added in the food (control); 3.6 g betaine/Kg of food; 7.1 g betaine/Kg of food. The fish were exposed to experimental conditions for 60 days. Fish presented significant growth throughout experimentation, but no...

Józef URBAŃSKI, and Wacław MORGAŚ, and Andrzej FELSKI

In this paper, there has been presented the today – development’s state of maritime navigation, main factors characterizing this stage of development and factors generating the current changes in all aspects of maritime navigation. There has been also made an attempt to show the most probable changes in maritime navigation that might be expected in the nearest future.

V. Kamphuis, and S. E. Huisman, and H. A. Dijkstra

To understand the three-dimensional ocean circulation patterns that have occurred in past continental geometries, it is crucial to study the role of the present-day continental geometry and surface (wind stress and buoyancy) forcing on the present-day global ocean circulation. This circulation, often referred to as the Conveyor state, is characterised by an Atlantic Meridional Overturning Circulation (MOC) with a deep water formation at northern latitudes and the absence of such a deep water for...

I. M. Mazzitelli, and M. Cassol, and M. M. Miglietta, and U. Rizza, and A. M. Sempreviva, and A. S. Lanotte

The diurnal evolution of a cloud free, marine boundary layer is studied by means of experimental measurements and numerical simulations. Experimental data belong to an investigation of the mixing height over inner Danish waters. The mixed-layer height measured over the sea is generally nearly constant, and does not exhibit the diurnal cycle characteristic of boundary layers over land. A case study, during summer, showing an anomalous development of the mixed layer under unstable and nearly neutr...

Klyus O. A.

Purpose: the algorithms have been defined and grounded that contain projecting operations for the formation and implementation of a programme aiming at the correction of psychophysical state of children in the process of physical education during the second year of studying at school. In the investigated was attended by 19 girls and 15 boys second class of experimental group and 30 girls and 30 boys in the control group. Results: it is shown that the increase in body weight of 2.4% in girls and ...

Shimei eWu, and Ge eLiu, and Ge eLiu, and Ge eLiu, and Weihua eJin, and Weihua eJin, and Pengyuan eXiu, and Pengyuan eXiu, and Pengyuan eXiu, and Chaomin eSun, and Chaomin eSun

Pseudomonas aeruginosa is a well-known pathogenic bacterium that forms biofilms and produces virulence factors, thus leading to major problems in many fields, such as clinical infection, food contamination and marine biofouling. In this study, we report the purification and characterization of an exopolysaccharide EPS273 from the culture supernatant of marine bacterium Pseudomonas stutzeri 273. The exopolysaccharide EPS273 not only effectively inhibits biofilm formation but also disperses prefor...

Haimanti Biswas, and Debasmita Bandyopadhyaya

The effects of iron availability on pigment signature and biogenic silica production were investigated for the first time in the coastal diatom Chaetoceros gracilis (isolated from the SW coast of the Bay of Bengal, India). Results revealed that increase in iron supply considerably increases chlorophyll a based specific growth rates, whereas, it decreases the values of diatoxanthin index and photoprotective to light harvesting pigment ratios. It is likely that, under iron stress C. gracilis activ...

Antonio eTrincone

It is difficult to overvalue the importance of polysaccharides for the great number of applicative fields in which they appeared. Oligosaccharides are relatively short compounds that are prepared from the longer polysaccharides or could also be found as such in nature. The potential in bioactivity of marine polysaccharides is still considered under-exploited and these molecules, including the derived oligosaccharides, are an extraordinary source of chemical diversity. Sustainable ways to access ...

Leonard Tah, and Goore Bi Gouli, and Kouassi Sebastino Da Costa

Nowadays, the successful management of small scale fisheries requires the use of biometric data collected in the field, in order to transform them into suitable indicators. The present study describes the lengthweight relationships for 36 freshwater fish species from two tropical reservoirs Ayame I and Buyo, in Côte d’Ivoire. The main objective of the study was to provide a length weight key for a wide range of freshwater fish species from these tropical reservoirs exploited by the inland fisher...

A. Gori, and C. Orejas, and T. Madurell, and L. Bramanti, and M. Martins, and E. Quintanilla, and P. Marti-Puig, and C. Lo Iacono, and P. Puig, and S. Requena, and M. Greenacre, and J. M. Gili

Submarine canyons are known as one of the seafloor morphological features where living cold-water coral (CWC) communities develop in the Mediterranean Sea. We investigated the CWC community of the two westernmost submarine canyons of the Gulf of Lions canyon system: the Cap de Creus Canyon (CCC) and Lacaze-Duthiers Canyon (LDC). Coral associations have been studied through video material recorded by means of a manned submersible and a remotely operated vehicle. Video transects have been conducte...

Jean-Luc Bouchereau, and Paulo T. Chaves, and Jean-Jacques Albaret

An inventory of the maximum length (ML) reached by 57 species of fishes living in the mangrove of Guaratuba, Brazil, was undertaken with an aim to evaluate the relationship between the ecosystem and the size of individuals. For each of these species, the maximum length found in the region were compared with those available in existing literature. The majority of populations presented individuals whose length reached at least 40% than the known maximum length for the species, although only 19.3% ...

S. ORFANIDIS, and P. PANAYOTIDIS, and N. STAMATIS

A model to estimate the ecological status and identify restoration targets of transitional and coastal waters was developed. Marine benthic macrophytic species (seaweeds, seagrasses) were used to indicate shifts in the aquatic ecosystem from the pristine state with late-successional species (Ecological State Group I) to the degraded state with opportunistic (ESG II) species. The first group comprises species with a thick or calcareous thallus, low growth rates and long life cycles (perennials), ...

Anna eCabre, and David eShields, and Irina eMarinov, and Tihomir eKostadinov

We use a novel satellite time series of size-partitioned phytoplankton biomass to construct and analyze classical and novel seasonality metrics. Biomass is computed from SeaWiFS ocean color data using retrievals of the particle size distribution with the KSM09 algorithm and existing allometric relationships to convert volume to carbon. The phenological metrics include the peak blooming date, bloom strength, shape of the seasonal cycle, and reproducibility of the seasonal cycle. We compare the se...

Cléo Dilnei de Castro Oliveira, and Ricardo Silva Absalão

A review is made of the members of Lyonsiellidae present on the continental slope (750-2000 m) of Campos Basin (22°S), off south-eastern Brazil. A total of six taxa are recognized. Two taxa were previously unknown to science (Lyonsiella pipoca n. sp., described herein, and Policordia sp.). Lyonsiella frielei and Policordia gemma are recorded from Brazilian waters for the first time. Lyonsiella abyssicola is distributed throughout the Atlantic Ocean, but the present record fills a gap in its dist...

Mohammad Reza Shushizadeh, and Azar Mostoufi, and Abdol-azim Behfar, and Minoo Heidary

Marine sponge/oxalic acid was found to be an efficient catalyst for the imino Diels–Alder reaction of synthesized N-aryl-substituted aldimines and various alkenes to provide 1,2-dihyro and 1,2,3,4-tetrahydro-quinolines using 1,7-sigmatropic rearrangement with induction of chirality. Mild reaction conditions, simple experimental procedure, good yields of products, and optical active induction render this new method attractive for 1,7-sigmatropic rearrangement of imino Diels–Alder reaction.

Anton Chichvarkhin

The coast of northern Primorye region, north of Peter the Great Bay has been sparsely studied in regards to its molluscan fauna, with just a few works reviewing the distribution of local mollusks. This work presents a survey of the shallow water heterobranch sea slugs currently occurring around Kievka Bay to Oprichnik Bay, Russia. Thirty-nine species of sea slugs were found in this study and the new species Cadlina olgae sp. nov., described herein. Most (24) of the species occurring in the area ...

Ozherelieva Zoya, and Prudnikov Pavel, and Bogomolova Natalia

Sea buckthorn (Hippophae rhamnoides L.) genotypes of different ecological and geographical origins were tested. Frost hardiness extent was determined during winter by artificial freezing, which allowed identify varietal differences in frost hardiness of buds and tissues of sea buckthorn shoots. In order to identify differences in adaptation to low temperature we determined the fractional composition of water in annual shoots; and proline and malone dialdehyde concentration and total amylase acti...

T. Chikashige, and M. Iwasaka

In this study, a new method was investigated to form light-reflecting dots at the micrometer scale using the magnetic orientations of biogenic guanine crystals obtained from fish skin and scales. The crystal platelets, possessing average dimensions of 5 μm×20 μm×100 nm, were dispersed in water and observed during exposure to vertical magnetic fields up to 5 T. The magnetic field direction was parallel to Earth’s gravity, and allowed the narrowest edges of the crystals to be observed at the micro...

F. G. ARAÚJO, and L. N. SANTOS

Spatial distribution of fish assemblages in Lajes Reservoir, a 30 km² impoundment in Rio de Janeiro State (Lat. 22º42'-22º50'S; Long. 43º53'-44º05'W) was assessed to detect patterns of available habitat use by the fish. A standardized monthly sampling program was carried out from January to December 1994 at three zones of the reservoir (upper, near tributary mouths; middle; and lower, near the dam). Fishes were caught by gillnets, (50 m long, 3 m height), with mesh ranging having from 25 to 45 m...

Raquel Coelho Loures, and Paulo Santos Pompeu

Damming rivers to generate hydroelectric energy causes a series of changes in the environment, including impacts on the ichthyofauna. Knowledge of the fish community immediately downstream from a hydroelectric dam can help to reduce the negative effects of dam operation, such as fish entrance into the draft tube during turbines maintenance. We evaluated the temporal variation in fish community composition and abundance, near Três Marias Hydroelectric Dam (TMD), and its relationship with abiotic ...

Mohamed Ali Deyab, and Fatma Mohamed Elnabawy Ward

Objective: To study ecological parameters and biochemical composition of brown seaweed, Turbinaria ornata (T. ornata) collected from Hurghada shores, Red Sea coast of Egypt during September, October and November, 2015. Methods: T. ornata and its associated seaweeds were collected, identified and their abundances were estimated. Water of collection site was analyzed physicochemically as well as qualitative and quantitative analyses of phytoplankton. T. ornata was analyzed for protein, total ...

Safina Kousar and Muhammad Javed

Various environmental pollutants, including metals can cause toxicological effects on aquatic animals especially fish species. Laboratory experiments were conducted to determine acute toxicity and bioaccumulation patterns of arsenic (As), nickel (Ni) and zinc (Zn) in 150-day old fish species (Labeo rohita, Cirrhina mrigala, Catla catla and Ctenopharyngodon idella), separately, in glass aquaria under constant water temperature (30oC), total hardness (300 mg L-1) and pH (7.5). Catla catla showed s...

Igor Glavičić, and Dejan Paliska, and Alen Soldo, and Marcelo Kovačić

The present study provides the first quantitative assessment of cryptobenthic fish species diversity and abundance on hard bottoms below 20 m depth by examining Mediterranean underwater reefs with deep vertical cliffs. Quantitative sampling was performed at depths down to about 45 m and yielded 220 cryptobenthic and 61 epibenthic individuals belonging to 21 species, showing that the cryptobenthic fishes highly outnumbered the epibenthic individuals. The study highlights the high diversity and ab...

Cesar K. Grisolia, and Carla L. G. Rivero, and Fernando L. R. M. Starling, and Izabel C. R. da Silva, and Antonio C. Barbosa, and Jose G. Dorea

Lake Parano&#225; is a tropical reservoir for the City of Brasilia, which became eutrophic due to inadequate sewage treatment associated with intensive population growth. At present, two wastewater treatment plants are capable of processing up to 95% of the domestic sewage, thereby successfully reducing eutrophization. We evaluated both genotoxic and cytotoxic parameters in several fish species ( Geophagus brasiliensis , Cichla temensis , Hoplias malabaricus , Astyanax bimaculatus lacustres , Or...

Paolo Barresi

Aim of this paper is to investigate the traditional technologies of lifting and sea transport of large stone blocks (time spent for sea transport, ways of charging and stewing large stone pieces, number of people engaged) with evidence from 18th and 19th century Italy, as a key to understand ancient Roman practices. I shall use data from reconstruction of the 5th century Christian basilica of St. Paul at Rome, burnt in 1823, where new granite shafts, mainly from Italian quarries, replaced the Ro...

J. ARAGAY, and D. VITALES, and A. GÓMEZ GARRETA, and M. A. RIBERA SIGUAN, and F. STEEN, and O. DE CLERCK, and T. GARNATJE, and J. RULL LLUCH

Dictyota cyanoloma, a distinctive brown algal species characterized by a blue-iridescent margin, was recently reported as an introduced species in the Mediterranean Sea (Steen et al., 2016) but little is known about its distribution dynamics, morphological plasticity and genetic structure. In the present integrative study, we evaluate its past and present occurrence along the Mediterranean Iberian coast, assess the species’ phenology in Palamós (Girona, Spain) and analyze the haplotype diversity...

Ndifreke E. Udonwa, and Abraham N. Gyuse, and Aniekan J. Etokidem

Background: Malaria prevention and treatment constitute an unbearable economic burden to most African countries, especially south of the Sahara, where about 500 million cases occur annually. The problem of malaria among adolescents has largely been overshadowed by the huge burden of the disease among young children. Attention to malaria among adolescents has also been diverted by the huge burden of HIV/AIDS among adolescents. Some surveys reveal a lack of knowledge and many misconceptions about ...

N. Kalivitis, and I. Stavroulas, and A. Bougiatioti, and G. Kouvarakis, and S. Gagné, and H. E. Manninen, and M. Kulmala, and N. Mihalopoulos

Measurements of atmospheric ions in the size range 0.8–42 nm were conducted at the environmental research station of the University of Crete at Finokalia from April 2008 to April 2009 in the frame of the EUCAARI project. Both positive and negative atmospheric ions were found to have a clear annual cycle, with minimum concentrations in summer. Their concentrations were found to vary with the prevailing meteorology and the abundance of aerosol particles in the atmosphere. High concentrations of io...

Luís Henrique de Aquino Moreira, and Fábio Hideki Yamada, and Tiago Lopes Ceschini, and Ricardo Massato Takemoto, and Gilberto Cezar Pavanelli

The study analyzed 84 specimens of Metynnis lippincottianus (Cope, 1870) (Characidae) from two environments with different degrees of impact due to a hydroeletric plant; 44 hosts from the upper Parana river floodplain (low degree of impact) and 40 from Paranapanema tributaries (Corvo and Guairacá rivers, high degree of impact). The prevalence found, among the total collected fishes, was 77.4%. One digenetic species, Dadayus pacupeva, and four nematodes, Spinoxyuris oxydoras, Contracaecum sp. (la...