Energy Sources for Detritivorous Fishes in the Amazon

Araújo-Lima, Carlos A. R. M.; Forsberg, Bruce R.; Victória, Reynaldo Luiz; Martinelli, Luiz Antônio

doi:10.1126/science.234.4781.1256

Cited by 214 publications

(182 citation statements)

References 14 publications

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“…Similarity between Scientific Knowledge (tucunaré = tucC; tambaqui = tambC; pirapitinga = pirapC; piranha = piraC; pacu = pacC; matrinxã = matC; curimatã= curC; aruanã = aruC; acará-açú = açúC) and traditional knowledge of the fishermen (tucunaré = tucE; tambaqui = tambE; pirapitinga = pirapE; piranha = piraE; pacu = pacE; matrinxã = matE; curimatã = curE; aruanã = aruE; acará-açú = açúE) about the diet composition of Similarity between Scientific Knowledge during the drought season. Rankin-de-Mérona 2004), piranha has alimentary spectrum amplified, because its eat yonder fish also terrestrial arthropod occasionally, crustacean and vegetable material (Goulding 1980, Pouilly et al 2003, Mérona & Ranking-de-Mérona 2004, tambaqui and pacu consuming mainly fruits and seeds, leaves from the floodplain forest (Goulding 1980, Silva 1997, Mérona & Ranking-de-Mérona 2004; pirapitinga and matrinxã, yonder fruits and seeds also eats terrestrial and aquatic invertebrates (Goulding 1980, Mérona & Ranking-de-Mérona 2004; curimatã is detritivorous, feeds with detritus adding with microfaune, organic amorphous material or litter associated with sedimentary material (Araújo- Lima et al 1986, Mérona & Ranking-de-Mérona 2004. For the aruanã diet composition was different from the cited in the literature that lists the terrestrial invertebrates (insects) as the…”

Section: Discussionmentioning

confidence: 99%

Fish diet from Manacapuru Big Lake complex (Amazon): a approach starting from the traditional knowledge

Freitas

Soares

2010

Biota Neotrop.

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Abstract:In the Amazon fishing is one of the main economic activities and higher value to traditional riverine communities of the region. Considering this importance is to suppose that the riverine populations have knowledge about fish fauna explores for them, because their forming culture that maintain a strait relationship with natural resources. This study aim to elevate the traditional knowledge of the fishermen from the riverine communities in the Big Lake Complex about the fish alimentary diet caught for commercialization and consumption. This study was realized in the Manacapuru Big Lake Complex through interview jointed with 62 fishermen. The results presents a detailed knowledge about the tambaqui, tucunaré, pacu, acará-açú, curimatã, aruanã, matrinxã, piranha and pirapitinga fish feeding compatible with the laboratory analyzes and with the specifics literature. Finally the traditional ecological knowledge from the fishermen about the fish ecology in the Big Lake must be used as a subsidy study of lakes management, establishing in this way, an information resource for scientific works at the same time to minimize the cost with a long research. Resumo: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. Palavras-chaves: etnoictiologia, ecologia de peixes, pescadores, Amazônia, lagos de várzea. 40 Rebelo, S.R.M. et al.

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Section: Discussionmentioning

confidence: 99%

Fish diet from Manacapuru Big Lake complex (Amazon): a approach starting from the traditional knowledge

Freitas

Soares

2010

Biota Neotrop.

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“…Moreover, isotopic ratios of C 3 terrestrial plants usually are assessed from very limited samples of leaves or composite sample of tree parts without consideration of variation within and among species or tissue types within a single plant (e.g., Araujo-Lima et al 1986, Forsberg et al 1993. Very little is known on isotopic variation between vegetative and reproductive tissues, despite the importance of fruit as food for large suites of invertebrates and vertebrates in both temperate and tropical ecosystems (Jordano 2000).…”

Section: Introductionmentioning

confidence: 99%

Isotopic variation among Amazonian floodplain woody plants and implications for food-web research

Correa

Winemiller

2016

Biota Neotrop.

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Isotopic variation within food sources adds uncertainty to models intended to reconstruct trophic pathways. Understanding this variation is pivotal for planning sampling protocols for food-web research. This study investigates natural variation in C and N stable isotopes among plant species in two western Amazon flooded forests with contrasting watershed biogeochemistry (white-water vá rzea-forest and black-water igapó -forest 13 C values of leaves and fruits were not statistically different between the two sites despite regional differences in biogeochemistry and floristic composition. In contrast, mean d 15 N of leaves and fruits were significantly lower at the vá rzea than at the igapó site. The high floristic diversity of both forests was reflected in large within-site interspecific variation in both d 13 C and d 15 N. Paired comparisons revealed that d 13 C of wood and fruits and d 15 N of fruits were generally greater than values obtained for leaves from the same plant. The predicted contribution of different carbon sources to the consumer biomass changed between models as a function of source variability. We discuss implications of source variation for designing sampling protocols, interpreting isotopic signatures, and establishing trophic links between plants and consumers. Our findings highlight the importance of in situ sampling to establish reliable primary production baselines for local food webs. Keywords: Stable isotopes, Igapó, Várzea, Fruits, Food web, Mixing model. CORREA, S.B., WINEMILLER, K., CÁ RDENAS, D. Variación isotópica entre plantas leñosas de planicies de inundación del Amazonas e implicaciones para la investigación de red tróficas. Biota Neotropica. 16(2): e20150078. http://dx.doi.org/10.1590/1676-0611-BN-2015-0078Resumo: La variació n isotó pica dentro de fuentes alimenticias añ ade incertidumbre a los modelos destinados a reconstruir redes tró ficas. La comprensió n de esta variació n es fundamental para la planificació n de protocolos de muestreo para la investigació n de redes alimentarias. Este estudio investiga la variació n natural en isó topos estables de C y N entre especies de plantas en dos bosques inundables de la Amazonía noroccidental con biogeoquímica de cuenca contrastantes (vá rzea-bosques de aguas blanca e igapó -bosques de aguas negras). Nuestros objetivos fueron comparar las señ ales isotó picas de d 13 C y d 15 N de hojas y frutos entre bosques; evaluar la magnitud de la variació n en la composició n isotó pica de hojas (vá rzea: 28 spp., Igapó : 10 spp.) y frutas (vá rzea:. 22 spp, igapó : 22 spp.) a nivel local; determinar la variació n en la composició n isotó pica de madera, hojas y frutas dentro de una planta; y evaluar si la variació n inter-específica en los valores de d 13 C y d 15 N ejerce influencia sobre los resultados de modelos que predicen la contribució n de fuentes de alimentos terrestres a un consumidor acuá tico. Los valores promedio de d 13 C en hojas y frutos no fueron estadísticamente diferentes entre los dos tipos de bosque a pesar ...

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“…Phytoplankton is one of the main energy sources of autotrophic energy for the ichthyofauna in various tropical fluvial ecosystems (Araujo-Lima et al, 1986;Hamilton et al, 1992;Forsberg et al, 1993). It is the same with Central Amazon floodplains where phytoplankton represents a great part of the carbon content of the main species of commercial fish, both in adult (Forsberg et al, 1993;Benedito-Cecilio et al, 2002) and larval stages (Leite et al, 2002) despite making up only 2 % of the regional primary production (Melack and Forsberg, 2001).…”

Section: Introductionmentioning

confidence: 99%

Seasonal Variation in the Distribution and Isotopic Composition of Phytoplankton in an Amazon Floodplain Lake, Brazil

2014

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Variación estacional de la distribución y composición isotópica del fitoplancton en un lago de inundación en la Amazonia, Brasil PEDRO ABSTRACTTo evaluate the seasonal variation and isotopic composition of phytoplankton, water samples were collected monthly between October 2007 and November 2008 in Lake Catalão, a floodplain lake at the confluence between rivers Negro and Amazon. Analyses of total chlorophyll concentration and δ 13 C and δ 15 N isotopic abundances were made from particulate size fractions of 30-60, 10-30 and <10 µm in the littoral, pelagic, and floating meadows regions. Chlorophyll concentration was found to be inversely associated to lake depth, and high concentrations of chlorophyll in the floating meadows zone were significant. The fraction <10 µm was the most abundant representing in average more than 40 % of the particulate matter. The δ 13 C values were relatively constant during the study (-25.1 ‰ ~ -34.0 ‰), whereas the δ 15 N values showed strong variability (15.6 ‰ 2 .4 ‰), which has been attributed to the resuspension of sediments during mixing of the water column. Mixing associated to the sudden drop in temperature during the rising water period was an important event in the trophic and isotopic dynamics of the lake. Variations in chlorophyll content were generally associated with the dilution process, in which concentration was inversely correlated to the water level, whereas abundance was directly correlated to the water level.Keywords: Amazon, floodplain lake, size-fractionated phytoplankton, stable isotopes. RESUMENCon el propósito de evaluar la variación estacional de la abundancia isotópica (δ 13 C e δ 15 N) del fitoplancton, muestreos mensuales fueron realizados entre octubre de 2007 y noviembre de 2008 en el lago Catalão, un lago de inundación en la zona de confluencia de los ríos Negro y Solimões, ubicado frente a la ciudad de Manaus (AM, Brasil). Análisis de la clorofila total y evaluaciones de la abundancia natural de δ 13 C y δ15N fueron realizados en las fracciones partículadas de 30-60, 10-30 y <10 µm en las zonas litoral, pelágica y de macrófitas acuáticas. La concentración de clorofila presentó una relación inversa con la profundidad del lago, siendo relevantes las altas concentraciones encontradas dentro del tapete de macrófitas acuáticas. La fracción <10µm fue la que presentó la mayor concentración de clorofila, representando más del 40% del material particulado. Los valores de δ 13 C fueron relativamente constantes durante el período de estudio (-25,1 ‰ ~ -34 ‰), mientras que la abundancia natural de δ 15 N presentó una amplia variación (15,6 ‰ ~ -2,4 ‰), que fue atribuida al proceso de resuspensión de los sedimentos en los procesos de mezcla de la columna de agua. En este contexto, el fenómeno de la mezcla asociada con Artículo de investigaciónACTA BIOLÓGICA COLOMBIANA Acta biol. Colomb., 19(2):291-304, mayo -agosto de 2014 -291 la friaje durante el período de aguas altas, fue un evento importante en la dinámica trófica e isotópica del lago. En general las vari...

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Energy Sources for Detritivorous Fishes in the Amazon

Cited by 214 publications

References 14 publications

Fish diet from Manacapuru Big Lake complex (Amazon): a approach starting from the traditional knowledge

Fish diet from Manacapuru Big Lake complex (Amazon): a approach starting from the traditional knowledge

Isotopic variation among Amazonian floodplain woody plants and implications for food-web research

Seasonal Variation in the Distribution and Isotopic Composition of Phytoplankton in an Amazon Floodplain Lake, Brazil

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