scholarly journals COMPOSITION OF THE ICHTHYOFAUNA OF THE IGARAPÉ PRAQUIQUARA, CASTANHAL, EASTERN AMAZON

2019 ◽  
Vol 28 (1) ◽  
pp. 1-17
Author(s):  
Rafael Anaisce das CHAGAS ◽  
Mara Rúbia Ferreira BARROS ◽  
Wagner César Rosa dos SANTOS ◽  
Alan Patrick Souza MIRANDA ◽  
Renata Franco dos SANTOS ◽  
...  

In the Amazon basin it is distributed the greatest diversity of freshwater fish in the world, but presents less than half of the species described and/or with little knowledge about its biology and distribution. This work presents the composition of the ichthyofauna Igarapé Praquiquara, located in the municipality of Castanhal, belonging to the Northeast Atlantic Hydrographic Region, Brazil, through collections were conducted in the years 2014 and 2015. A total number of 1,073 fish were sampled, belonging to five orders, 16 families, 35 genus and 42 species. Characiformes and Perciformes were the most predominant orders, Cichlidae and Characidae were the most abundant families, and Bryconops giacopinni, Cyphocharax gouldingi, Astyanax sp., Geophagus proximus and Satanoperca jurupari the most abundant species. Igarapé Praquiquara is composed of species with moderate commercial interest for commercial aquariums, with the presence of species cultivated in other regions. A structural analysis of the igarapé fish community is recommended in order to identify which factors are responsible for the composition of the ichthyofauna present, as well as the influence of the dam on the dispersion, distribution and reproduction of species.

Author(s):  
Adrián Bertorello

RESUMENEl trabajo examina críticamente la afirmación central de la hermenéutica de Paul Ricoeur, a saber, que el soporte material de la escritura es el rasgo determinante para que una secuencia discursiva sea considerada como un texto. La escritura cancela las condiciones fácticas de la enunciación y crea, de este modo, un ámbito de sentido estable en el que se puede validar una concepción de la subjetividad que está implicada en las dos estrategias de lecturas (el análisis estructural y la apropiación), esto es, un sujeto pasivo que se constituye por la idealidad del significado. Asimismo, el trabajo intentará precisar una serie de ambigüedades en el uso que Ricoeur hace del «ser en el mundo» para sostener la referencialidad del discurso.PALABRAS CLAVETEXTO, ESCRITURA, REFERENCIA, SUBJETIVIDAD, MUNDOABSTRACTThis paper critically examines the main assertion of Paul Ricoeur´s hermeneutics, i.e., that the material base of writing is the determining feature to consider a discursive sequence as a text. Writing cancels the factual conditions of enunciation and creates, in this way, a background of stable meaning where it is possible to validate a conception of subjectivity implicated in the two reading strategies (the structural analysis and the appropriation), i.e., a passive subject constituted by the ideality of meaning. Likewise, this paper aims to clarify some ambiguities in the way Ricoeur uses the «beings in the world» to support the discourse referentiality.KEY WORDSTEXT, WRITING, REFERENCE, SUBJECTIVITY, WORLD


2019 ◽  
Vol 31 (4) ◽  
pp. 241-248
Author(s):  
Su-Hyang Yoo ◽  
Yun Jeong Cho ◽  
Cheol Woo Park ◽  
Jong Wook Kim ◽  
Jae Goo Kim ◽  
...  

2007 ◽  
Vol 67 (3) ◽  
pp. 433-445 ◽  
Author(s):  
ML. Petesse ◽  
M. Petrere Jr. ◽  
RJ. Spigolon

The temporal succession of fish communities allows evaluating the environmental conditions and the adaptation capacity of the fish species to anthropogenic stress in reservoirs. The fish community at Barra Bonita reservoir was sampled in two different periods of the year (dry and rainy) and in three different areas of the reservoir (fluvial, transition, and lentic). The species list was compared to another four lists, trying to detect the transformations of the fish community for the last 15 years. In order to evaluate the adaptation of the present fish community to the hydraulic management of reservoir, the trophic and reproductive structures were studied. Temporal succession analysis shows little change in fish richness of the communities. The number of fish species varies between 23 and 39 for a total of 68 registered species. From this, 27 can be considered constant, 14 accessory and 27 accidental; the main differences observed were for Anostomidae, Loricariidae and Characidae families. In relation to the hydraulic management, we found a fish community stabilized and adapted to environmental stress. This is characterized by the dominance of small-sized fish species of opportunistic diet and high reproductive compensation (r-strategists). The overlap of biological cycles of the most abundant species with the reservoir level fluctuations points to the period from September to March-April as critical for reproductive success and only the species with partial reproductive strategy or parental care are best succeeded. These results, interpreted in the context of the reservoir aging process, indicate that Barra Bonita reservoir is entering a transition phase, between the colonization and aging stages.


2017 ◽  
Vol 39 (2) ◽  
Author(s):  
MARCOS SILVEIRA WREGE ◽  
IVAN DAGOBERTO FAORO ◽  
FLÁVIO GILBERTO HERTER ◽  
CRISTINA PANDOLFO ◽  
IVAN RODRIGUES DE ALMEIDA ◽  
...  

ABSTRACT Pear is among the fruits of major commercial interest in the world and one of the most imported in Brazil. Brazilian production is very small and the fruit quality is low, due to production problems. The success of culture in the country, among other factors, may be linked to the choice of cultivars, pollinating and rootstocks better adapted to local conditions, and thus depend on the particulars of an agricultural zoning. The aim of this study was to identify, in southern Brazil, homogeneous climatic zones with potential for growing of European and Asian pears, through climate risk studies. The regions were defined by the seasonal availability of chilling hours (<7.2 °C) accumulated during the period from May to September and the monthly risk of drought. The analysis allowed the recognition of four homogeneous areas for the production of pears in southern Brazil.


2017 ◽  
Vol 75 (1) ◽  
pp. 30-35 ◽  
Author(s):  
Sven Horvatić ◽  
Zoran Marčić ◽  
Milorad Mrakovčić ◽  
Perica Mustafić ◽  
Ivana Buj ◽  
...  

Abstract Orsinogobius croaticus is a freshwater fish with a small and limited distribution range in the Adriatic basin in Croatia and Bosnia-Herzegovina, where it inhabits cold karstic rivers and springs. The main threats to its populations include habitat fragmentation, declining habitat quality and the introduction of alien species. Conservation recommendations are proposed to improve effective habitat preservation and to expand the knowledge about this species.


2018 ◽  
Vol 2 (1) ◽  
pp. 41
Author(s):  
Dharma Satrya HD

<p>This paper discusses Kiki Sulistyo’s strategy for reaching position in Indonesia literary field. This research applied phenomenology and structural analysis method. Data were gathered by interview and objectification from social structure. The style of the writers’ poems and his consciousness toward Lombok were analyzed by phenomenology. The research result shows that Lombok literary field is denoted as the economy upside. Kiki Sulistyo denounces the world economy, thus moving within the production of a restricted arena. Kiki Sulistyo created literature as a movement, so he formed <em>Akar Pohon</em> community. Through this community, he generates a young poet and simultaneously undertakes a project of publishing works. Two anthologies of poetry he published brought him to the position of a legitimate poet. The legitimacy is given by poets, literary scholars, and institutions</p>


2004 ◽  
Vol 64 (3a) ◽  
pp. 501-510 ◽  
Author(s):  
F. K. Siqueira-Souza ◽  
C. E. C. Freitas

The fish community of the Solimões floodplain lakes was studied by bimonthly samples taken from May 2001 to April 2002. These were carried out at lakes Maracá (03º51'33"S, 62º35'08,6"W), Samaúma (03º50'42,1"S, 61º39'49,3"W), and Sumaúma and Sacambú (03º17'11,6"S and 60º04'31,4"W), located between the town of Coari and the confluence of the Solimões and Negro rivers. Collections were done with 15 gillnets of standardized dimensions with several mesh sizes. We collected 1,313 animals distributed in 77 species, belonging to 55 genera of 20 families and 5 orders. Characiformes was the most abundant Order, with a larger number of representatives in the Serrasalmidae and Curimatidae. The most abundant species in the samplings were Psectrogaster rutiloides (132 individuals), Pigocentrus nattereri (115 individuals), and Serrasalmus elongatus (109 individuals). Lakes Samaúma, Sacambú, and Sumaúma were adjusted to logarithmic and lognormal series. The diversity exhibited an inverse gradient to the river flow, showing the highest diversity at Lake Sumaúma, followed by Samaúma, Sacambú, and Maracá. Species richness estimated through the jackknife technique ranged from 78 to 107 species.


2008 ◽  
Vol 80 (2) ◽  
pp. 291-300 ◽  
Author(s):  
Mauricio Almeida-Gomes ◽  
Davor Vrcibradic ◽  
Carla C. Siqueira ◽  
Mara C. Kiefer ◽  
Thaís Klaion ◽  
...  

We studied the herpetofaunal community from the Atlantic forest of Morro São João, in Rio de Janeiro State, Brazil, and present data on species composition, richness, relative abundance and densities. We combined three sampling methods: plot sampling, visual encounter surveys and pit-fall traps. We recorded sixteen species of amphibians and nine of reptiles. The estimated densities (based on results of plot sampling) were 4.5 ind/100 m2 for amphibians and 0.8 ind/100 m² for lizards, and the overall density (amphibians and lizards) was 5.3 ind/100 m². For amphibians, Eleutherodactylus and Scinax were the most speciose genera with three species each, and Eleutherodactylus binotatus was the most abundant species (mean density of 3.0 frogs/100 m²). The reptile community of Morro São João was dominated by species of the families Gekkonidae and Gymnophtalmidae (Lacertilia) and Colubridae (Serpentes). The gymnophtalmid lizard Leposoma scincoides was the most abundant reptile species (mean density of 0.3 ind/100 m²). We compare densities obtained in our study data with those of other studied rainforest sites in various tropical regions of the world.


<em>Abstract</em>.—The objective of this study is to describe the distribution patterns of abundance and biomass, on a geographic and bathymetric basis, of the main macrourid species of Mozambique waters. Catch data from a demersal trawl survey (<EM>MOZAMBIQUE 07</EM>) were analyzed. The survey covered the continental shelf and upper-middle slope from 17°00’S to 26°50’S and from 100–700 m depth. Fourteen macrourid species were collected from 200 m and deeper. The most abundant species and the highest in biomass were <em>Coelorinchus braueri</em>, <em>C. trunovi, C. denticulatus</em>, <em>Ventrifossa nasuta</em>, and <em>Malacocephalus laevis</em>. Only those five species were analyzed in detail. The occurrence and yields by geographic and bathymetric range of these main species seem to reveal the existence of some species-specific preference for determinate depth ranges and/or geographic areas. Preanal length-weight relationships were estimated for <em>C. braueri, C. trunovi, </em>and <em>V. nasuta</em>: <em>a</em>= 0.00071; 0.00020; 0.00080; <em>b</em>= 2.50; 2.80; 2.76 and <em>r</em><sup>2</sup>= 0.93; 0.97; 0.78, respectively.


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