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  • 1
    Online Resource
    Online Resource
    Dinâmica populacional de Triportheus albus, T. angulatus e T. auritus (CHARACIFORMES: CHARACIDAE) em lagos da Amazônia Central
    FapUNIFESP (SciELO) ; 2010
    In:  Biota Neotropica Vol. 10, No. 3 ( 2010-09), p. 177-181
    Details
    In: Biota Neotropica, FapUNIFESP (SciELO), Vol. 10, No. 3 ( 2010-09), p. 177-181
    Abstract: In the Amazon the fishing is considered an important source of income and animal protein for the people in the region. Among the different fish species that landed in the market and fairs stand out Triportheus albus, T. angulatus and T. auritus. Considering the reduction of some fish stocks in the region, both the quantity and the size of some species, the research proposes to determine the growth parameters, mortality and length-weight relation of these species in floodplain lakes, Manacapuru, AM. The parameters were estimated by analyzing the length frequency distribution with the help of the routine "scan of values of k" method ELEFAN I program FISAT II. The values for each species were: T. albus L∞ = 24.68 cm, k = 0.86/year, Ø '= 2.71, A0.95 = 3.48 years, Mp = 1.76/year, Mt = 0.85/year, Pt = 0.0398I Cp2.6303; T. angulatus L∞ = 26.78 cm, k = 0.77/year, Ø '= 2.74, A0.95 = 3.89 years, Mp = 1.60/year, Mt = 0.76/year, Pt = 0.0294 I Cp2.8599 and T. auritus L∞ = 27.83 cm, k = 0.65/year, Ø '= 2.70, A0.95 = 4.68 years, Mp = 1.40/year, Mt = 0.63/year and Pt = 0.0542I Cp2.5094. These species showed rapid growth, high mortality, low life expectancy and short life cycle. It is suggested the parameters population should be continuously monitored to be used as a tool in the stock analysis.
    Type of Medium: Online Resource
    ISSN: 1676-0603
    URL: Article
    DOI: 10.1590/S1676-06032010000300020
    Language: Unknown
    Publisher: FapUNIFESP (SciELO)
    Publication Date: 2010
    detail.hit.zdb_id: 2145494-2
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  • 2
    Online Resource
    Online Resource
    Length-weight relationship and condition factor of eight fish species from the upper Araguari River, State of Amapá, Brazil
    Universidade Estadual de Maringa ; 2019
    In:  Acta Scientiarum. Biological Sciences Vol. 41 ( 2019-11-01), p. e46666-
    Details
    In: Acta Scientiarum. Biological Sciences, Universidade Estadual de Maringa, Vol. 41 ( 2019-11-01), p. e46666-
    Abstract: The present study estimated parameters of the length-weight relationship (LWR) and allometric condition factor for eight fish species from the upper Araguari River, in the State of Amapá, Brazil. A total of 615 fish of eight species were analyzed: Acestrorhynchus falcatus, A. falcirostris, Ageneiosus inermis, Hemiodus unimaculatus, Hoplias aimara, Myloplus asterias, M. ternetzi and Tometes trilobatus. The allometric condition factor varied from 0.742 to 1.435. The coefficient of allometry ranged from 2.723 to 3.225. The coefficient of determination (R2) of the LWR ranged from 0.742 to 0.985. This is the first estimate of the length-weight relationship for fish from the Araguari River and the first record of these parameters for Myloplus ternetzi and Tometes trilobatus.
    Type of Medium: Online Resource
    ISSN: 1807-863X , 1679-9283
    URL: Article
    DOI: 10.4025/actascibiolsci.v41i1.46666
    Language: Unknown
    Publisher: Universidade Estadual de Maringa
    Publication Date: 2019
    detail.hit.zdb_id: 2449349-1
    SSG: 7,36
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  • 3
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    Online Resource
    〈b〉Assembléias de peixes associadas às macrófitas aquáticas em lagos de várzea do baixo rio Solimões〈/b〉〈br〉doi: 10.5007/2175-7925.2010v23n1p131
    Universidade Federal de Santa Catarina (UFSC) ; 2011
    In:  Biotemas Vol. 23, No. 1 ( 2011-04-26)
    Details
    In: Biotemas, Universidade Federal de Santa Catarina (UFSC), Vol. 23, No. 1 ( 2011-04-26)
    Type of Medium: Online Resource
    ISSN: 2175-7925 , 2175-7925
    URL: Article
    DOI: 10.5007/2175-7925.2010v23n1p131
    Language: Unknown
    Publisher: Universidade Federal de Santa Catarina (UFSC)
    Publication Date: 2011
    detail.hit.zdb_id: 2190474-1
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  • 4
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    Conhecimento dos pescadores artesanais sobre a composição da dieta dos pacus (Characiformes: Serrasalmidae) na Floresta Nacional do Amapá, rio Araguari, Amapá, Brasil
    Universidade Federal de Santa Catarina (UFSC) ; 2016
    In:  Biotemas Vol. 29, No. 2 ( 2016-05-11), p. 101-
    Details
    In: Biotemas, Universidade Federal de Santa Catarina (UFSC), Vol. 29, No. 2 ( 2016-05-11), p. 101-
    Abstract: http://dx.doi.org/10.5007/2175-7925.2016v29n2p101O conhecimento ecológico tradicional (CET) dos pescadores é uma ferramenta importante para obtenção de informações ecológicas sobre o ambiente que vem sendo cada vez mais utilizada na conservação dos recursos naturais. Nesse contexto, o referido trabalho descreve o CET do pescador sobre a composição da dieta e local de pesca dos pacus (Characiformes: Serrasalmidae) Myloplus sp., Myloplus asterias, Myloplus ternetzi, Tometes trilobatus, Prosomyleus rhomboidalis e Mylesinus paraschomburgkii na Floresta Nacional do Amapá (FLONA-AP). Para a coleta das informações, foram realizadas entrevistas semiestruturadas (n=20 pescadores) e turnê-guiada. Segundo os pescadores, os pacus se alimentam de frutos/sementes, fragmentos vegetais, insetos e perifíton. No inverno, consomem frutos/sementes e fragmento de vegetais. No verão, além de frutos/sementes e fragmentos de vegetais, foi observada presença de perifíton e insetos. Comparando-se as informações dos pescadores com a literatura científica, observam-se similaridades para o período de inverno. Mas, no verão, os pescadores relatam a ingestão de perifíton e invertebrados não mencionados na literatura. Os locais de pesca são caracterizados como sazonais: no inverno a pesca ocorre nos varjões e, no verão, nas pedreiras e calha principal do rio. Os pescadores possuem um conhecimento detalhado sobre a alimentação dos pacus e o grau de refinamento do conhecimento é fundamental para a conservação na FLONA-AP.
    Type of Medium: Online Resource
    ISSN: 2175-7925 , 0103-1643
    URL: Article
    DOI: 10.5007/2175-7925.2016v29n2p101
    Language: Unknown
    Publisher: Universidade Federal de Santa Catarina (UFSC)
    Publication Date: 2016
    detail.hit.zdb_id: 2190474-1
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  • 5
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    Online Resource
    〈b〉Population dynamics of the yellow piranha 〈i〉Serrasalmus spilopleura〈/i〉 Kner, 1858 (Characidae, Serrasalminae) in Amazonian floodplain lakes〈/b〉 - doi: 10.4025/actascibiolsci.v35i3.15749
    Universidade Estadual de Maringa ; 2013
    In:  Acta Scientiarum. Biological Sciences Vol. 35, No. 3 ( 2013-08-01)
    Details
    In: Acta Scientiarum. Biological Sciences, Universidade Estadual de Maringa, Vol. 35, No. 3 ( 2013-08-01)
    Type of Medium: Online Resource
    ISSN: 1807-863X , 1679-9283
    URL: Article
    DOI: 10.4025/actascibiolsci.v35i3.15749
    Language: Unknown
    Publisher: Universidade Estadual de Maringa
    Publication Date: 2013
    detail.hit.zdb_id: 2449349-1
    SSG: 7,36
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  • 6
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    Reprodução da piranha-amarela Serrasalmus spilopleura Kner, 1858, em lagos de várzea, Amazonas, Brasil
    FapUNIFESP (SciELO) ; 2011
    In:  Biota Neotropica Vol. 11, No. 2 ( 2011-06), p. 97-102
    Details
    In: Biota Neotropica, FapUNIFESP (SciELO), Vol. 11, No. 2 ( 2011-06), p. 97-102
    Abstract: Serrasalmus spilopleura (piranha) is a source of animal protein for marginal populations, it is occasionally sold in markets and fairs in the region. Considering the scarcity of information on reproduction of fish in floodplain lakes, the study proposes to investigate the average size at first maturity and spawning season of S. spilopleura lakes Jaitêua-São Lourenço, Manacapuru, AM. Also related are the abiotic factors (water level and depth) and biotic (condition factor) with the spawning season. 232 females were captured from August 2006 to June 2007, using gill net, and in the laboratory were used for biometrics and identification of the maturation stages. The spawning season of the females was established through the temporal distribution of relative frequency in different maturation stages and relative condition factor, Kn = Pt/aCp b, where: Kn = relative condition factor; Pt = total weight; Cp = standard length, a and b = constants obtained from regression between weight and length. And, to check for correlation between condition factor and with the spawning season depth of the lakes, we used the Spearman correlation coefficient of the 5% significance level. The amplitude of the standard length of specimens ranged 7-22 cm. Correlation analysis between Kn and spawning season (r s= 0.58, p 〈 0.05) was positive, i.e. the spawning season corresponded to the higher Kn, suggesting that an indicator of spawning season of S. spilopleura. There was a negative correlation between the depth and Kn (r s = -0.66, p 〈 0.05) and between depth and spawning season (r s = -0.25, p 〈 0.05). The estimated L50 corresponded to 13.0 ± 0.09 cm and 17.0 ± 0.02 cm L100, S. spilopleura develops its complex reproductive cycle in the lake of Grand Lake Manacapuru, and based on indicators of reproduction, spawning season and relative condition factor, spawning begins in December, early on the rising extending to February, mid-rising, which coincided with the rise of water level of the Solimões-Amazon River and deep lakes.
    Type of Medium: Online Resource
    ISSN: 1676-0603
    URL: Article
    DOI: 10.1590/S1676-06032011000200011
    Language: Unknown
    Publisher: FapUNIFESP (SciELO)
    Publication Date: 2011
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  • 7
    Online Resource
    Online Resource
    Fish diet from Manacapuru Big Lake complex (Amazon): a approach starting from the traditional knowledge
    FapUNIFESP (SciELO) ; 2010
    In:  Biota Neotropica Vol. 10, No. 3 ( 2010-09), p. 39-44
    Details
    In: Biota Neotropica, FapUNIFESP (SciELO), Vol. 10, No. 3 ( 2010-09), p. 39-44
    Abstract: No Amazonas a pesca é uma das principais atividades econômicas e de maior valor tradicional para as comunidades ribeirinhas da região. Estas têm conhecimentos sobre a bioecologia dos peixes que exploram, pois praticam a atividade pesqueira diariamente, o que torna esse conhecimento fortalecido ao longo das gerações. O estudo tem por objetivo verificar se o conhecimento tradicional dos pescadores ribeirinhos, sobre a dieta alimentar de tambaqui, tucunaré, pacu, acará-açú, curimatã, aruanã, matrinxã, piranha e pirapitinga, é similar com aquele levantado em laboratório. Para tal, foram realizados em comunidades dos lagos Jaitêua e São Lourenço no complexo Lago Grande de Manacapuru, no período agosto de 2006 a outubro de 2008, questionários sobre os alimentos dos peixes, aplicados a 62 pescadores. O estudo aponta um detalhado conhecimento dos pescadores acerca da alimentação dos 9 tipos de peixes que são similares, no período de cheia, com os resultados obtidos em laboratório e em pesquisas literárias durante esta investigação. O estudo conclui que o conhecimento dos pescadores do Lago Grande é de fundamental importância para o entendimento da biologia pesqueira e podem ser usados como subsídios para políticas de manejo da pesca em lagos de várzeas quando agregados ao conhecimento científico.
    Type of Medium: Online Resource
    ISSN: 1676-0603
    URL: Article
    DOI: 10.1590/S1676-06032010000300003
    Language: Unknown
    Publisher: FapUNIFESP (SciELO)
    Publication Date: 2010
    detail.hit.zdb_id: 2145494-2
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  • 8
    Online Resource
    Online Resource
    Alimentação de Triportheus angulatus (Spix & Agassiz, 1829) no lago Camaleão, Manaus, AM, Brasil
    FapUNIFESP (SciELO) ; 2004
    In:  Acta Amazonica Vol. 34, No. 4 ( 2004-12), p. 653-659
    Details
    In: Acta Amazonica, FapUNIFESP (SciELO), Vol. 34, No. 4 ( 2004-12), p. 653-659
    Abstract: Periodical flooding cause strong modifications in Central Amazonian floodplain. Periodical rising and decreasing of the water level influences abiotic and biotic factors of the aquatic environments. During the flooding season, there is a high feed availability, in contrast with dry season in which feed availability is at the lowest level. Limnological parameters also change seasonally. Oxygen concentrations vary both daily and seasonally, sometimes even showing hypoxic conditions. Despite these alterations, floodplain lakes are inhabited by several fish species, having the most diverse and abundant fish fauna among the Amazonian environments. This study focused on Triportheus angulatus feeding in temporal distribution in order to understand the influences of hydrological changes on individual size, diet composition and feeding even in low oxygen concentrations. In rising waters season, small individuals are predominant while the decreasing and the dry seasons there are mostly larger ones. There is a seasonal change on diet composition and this is related to feed type that is more available: during the rising, fishes eat mainly insects and zooplankton; in the flood season and drying season, seeds and fruits are predominant, and at the dry season they eat mainly insects. Feed ingestion was higher in the rising waters and mostly in the flood, and it was lower in the drying season. Feeding activity was not related with oxygen concentrations.
    Type of Medium: Online Resource
    ISSN: 0044-5967
    URL: Article
    DOI: 10.1590/S0044-59672004000400017
    Language: Unknown
    Publisher: FapUNIFESP (SciELO)
    Publication Date: 2004
    detail.hit.zdb_id: 2088290-7
    SSG: 12
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  • 9
    Online Resource
    Online Resource
    O Departamento Peixe/Pesca
    FapUNIFESP (SciELO) ; 1981
    In:  Acta Amazonica Vol. 11, No. 1 suppl 1 ( 1981-03), p. 81-87
    Details
    In: Acta Amazonica, FapUNIFESP (SciELO), Vol. 11, No. 1 suppl 1 ( 1981-03), p. 81-87
    Abstract: SUMMARY This paper concerns about the historic of the Fish/Fishery Department development at INPA — Instituto Nacional de Pesquisas da Amazônia. Now a day, this Department is formed by six divisions. The Division of Fishery do the evaluation of the fish stock ay using catch and landing data, field observations on catch methods, behaviour of fishing fleet, etc... The Division of Fish Biology takes place on systematic characterization of amazonian fish species, the study of food and feeding habits and reproduction according to the annual water level cycling, the differences on fish fauna related to the main types of water, as well as parasitology and icthyopathology. The Division of Aquatic Ecology analyses the limnological data of lakes and rivers of the amazonian region related to different types of water; special attention has been given to aquatic macrophites and its potential utilization in agriculture as fertilizer and cattle food. The Division of Fish Technology analyses the chemical composition of regional fishes, it develops preservation methods like as salting, drying and curing as well as quality control standards. The Division of Fish Culture develops culture methods of regional fishes, the study of natural and artificial ways of reproduction and experiments with different food formulations. The Division of Aquatic Mammals studies the biology, ecology and physiology of peixe-boi (manatee) and two species of river dolphins.
    Type of Medium: Online Resource
    ISSN: 0044-5967
    URL: Article
    DOI: 10.1590/1809-43921981111s081
    Language: Unknown
    Publisher: FapUNIFESP (SciELO)
    Publication Date: 1981
    detail.hit.zdb_id: 2088290-7
    SSG: 12
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  • 10
    Online Resource
    Online Resource
    Aspectos ecológicos (alimentação e reprodução) dos peixes do igarapé do Porto, Aripuanã, MT ()
    FapUNIFESP (SciELO) ; 1979
    In:  Acta Amazonica Vol. 9, No. 2 ( 1979-06), p. 325-352
    Details
    In: Acta Amazonica, FapUNIFESP (SciELO), Vol. 9, No. 2 ( 1979-06), p. 325-352
    Abstract: Summary In this paper feeding habits and reproduction of pbout 20 species of fishes collected at igarapé do Porto, Aripuanã, MT, during the beginning of high water season, are discussed Based on the data obtained from analysis of stomach and intestinal contents, comments are made on food habits, food preferences, and distribution of the fish in the biotopes studies According to these data it was possible to situate the species in the different trophic levels recognized within each biotope. Included also are some observation concerning the breeding season of the species studies.
    Type of Medium: Online Resource
    ISSN: 0044-5967
    URL: Article
    DOI: 10.1590/1809-43921979092325
    Language: Unknown
    Publisher: FapUNIFESP (SciELO)
    Publication Date: 1979
    detail.hit.zdb_id: 2088290-7
    SSG: 12
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