Results 81 to 90 of about 3,343 (212)

Impacts of Hydroelectric Dams on Amazonian Fisheries: Assessing Functional Attributes in the Madeira River

River Research and Applications, Volume 41, Issue 7, Page 1493-1502, September 2025.
ABSTRACT The Madeira River is one of the main tributaries of the Amazon Basin, supporting over 1300 known fish species. Fisheries in this region play a critical role for riverine populations, serving as a primary source of income and sustenance. In 2011, the construction of the Jirau and Santo Antônio hydroelectric dams (HEDs) was completed along the ...
Ana Laura Monteiro de Souza, Rogério Fonseca, Rangel Eduardo Santos, Raniere Garcez Costa Sousa, Felipe Micali Nuvoloni, Isys Nathyally de Lima Silva, Karen Sayuri Takano, Fabrício Berton Zanchi   +7 more
wiley   +1 more source

Impact assessment of the introduction of Cichla kelberi in a large Neotropical reservoir and its lateral lagoons (Upper Paraná River Basin, Brazil)

Brazilian Journal of Biology
This study aimed to understand how the introduction of Cichla kelberi in Rosana Reservoir (Paranapanema River) affected the native ichthyofauna. Data on the structure of the small fish fauna assemblage were obtained before and after the introduction of ...
M. Ferrareze, M. G. Nogueira
doaj   +1 more source

Aspek Reproduksi Ikan Nilem, Osteochilus Vittatus (Valenciennes, 1842) Di Danau Sidenreng, Sulawesi Selatan [Reproductive Biology of Bonylip Barb, Osteochilus Vittatus (Valenciennes, 1842) in Sidenreng Lake, South Sulawesi] [PDF]

, 2010
Studi tentang aspek reproduksi ikan nilem, Osteochilus vittatus (Valenciennes, 1842), telah dilakukan pada bulan Ma-ret-Juni 2009 di Danau Sidenreng yang meliputi nisbah kelamin, tingkat kematangan gonad (TKG), indeks kematangan gonad (IKG), fekunditas ...
Omar, S. B. (Sharifuddin)
core  

A New Species of River Dolphin from Brazil or:How Little Do We Know Our Biodiversity [PDF]

, 2014
True river dolphins are some of the rarest and most endangered of all vertebrates. They comprise relict evolutionary lineages of high taxonomic distinctness and conservation value, but are afforded little protection.
AJ Drummond, Anthony R. Martin, AWF Edwards, B Rannala, C Araújo, C De Muizon, D Falush, D Falush, D Posada, DA Baum, DA Earl, DE Rosen, E Banguera-Hinestroza, E Werle, EM Latrubesse, F Rossetti D de, G Pilleri, H Akaike, H Hamilton, I Cassens, Izeni Pires Farias, J Cracraft, J Messing, J Rach, J Thioulouse, J-F Renno, JAA Nylander, JAA Nylander, JI Davis, JK Pritchard, JP Huelsenbeck, JP Huelsenbeck, JP Huelsenbeck, JT Viltrup, K Tamura, KC Nixon, KR Paithankar, L Excoffier, LG Barnes, M Caldwell, M Jakobsson, MC Brandley, N Espurt, N Hubert, NA Rosenberg, Nicole Dutra, NV Ivanova, PE Rosel, PL Gibbard, RR Reeves, S Holm, Samuel T. Turvey, ST Turvey, TA Castoe, Tomas Hrbek, Vera Maria Ferreira da Silva, VMF Da Silva, W Gravena, Waleska Gravena, Y Xiong   +59 more
core   +6 more sources

Evidence for a natural hybrid of peacock bass (Cichla monoculus vs Cichla temensis) based on esterase electrophoretic patterns.

Genetics and molecular research : GMR, 2005
Esterase (Est) and esterase-D (Est-D) electrophoretic patterns identified by starch gel electrophoresis of skeletal muscle protein extracts of 184 specimens of three species of peacock bass, locally known as tucunares (Cichla monoculus, C. temensis and Cichla sp), plus four specimens of a supposed hybrid (C. monoculus vs C.
Teixeira, Aylton Saturnino, Oliveira, Suzana da Silva de   +1 more
openaire   +1 more source

Growth of the Cichla temensis Humboldt, 1821 (Perciformes: Cichlidae) from the middle rio Negro, Amazonas, Brazil

Neotropical Ichthyology
This study aimed to estimate age and growth of the peacock bass Cichla temensis from the rio Negro (Brazilian Amazonia) by analyzing scale annuli. Specimens were captured between October 2011 and September 2012 in the main channel of the river and in ...
Caroline Pereira Campos, Carlos Edwar de Carvalho Freitas, Sidineia Amadio   +2 more
doaj   +1 more source

Influence of body weight/age on the food intake, growth and conversion efficiency of Gambusia affinis [PDF]

, 1977
On a restricted food supply of Tubifex tubifex (2h/day) the fish consumed only 69.5 mg dry food/g live fish/day and grew only to 25.6 mg live body weight by the 30th day of it's age, while those fed ad libitum consumed 94.7 mg/g/day and attained a body ...
Ravichandra Reddy, S., Shakuntala, K.
core   +1 more source

Phylogeography of Cichla (Cichlidae) in the upper Madera basin (Bolivian Amazon)

Molecular Phylogenetics and Evolution, 2006
The Cichlidae family is one of the most specious andecologically diverse groups of freshwater Wshes inhabitingthe tropical zone (Winemiller et al., 1997). Recentlyassessed using molecular data, the phylogeny of cichlidWshes supports a monophyletic origin for the South Ameri-can faunas and further suggests higher evolutionary ratesamong many Neotropical
/Renno, Jean-François, /Hubert, Nicolas, /Torrico, Juan-Pablo, /Duponchelle, Fabrice, /Nunez, Jesus, Davila, C.G., Willis, S.C., Desmarais, E.   +7 more
openaire   +3 more sources

Uso do microcrustáceo branchoneta (Dendrocephalus brasiliensis) na ração para tucunaré

Revista Brasileira de Saúde e Produção Animal, 2005
O tucunaré (Cichla ocellaris) é um peixe amazônico ictiófago, que tem grande valor comercial. Essa espécie normalmente não aceita alimentos secos. Esse experimento foi conduzido com o objetivo de avaliar o uso da branchoneta (Dendrocephalus brasiliensis),
E. P. Socorro, J A. M. Silva, R L. Carneiro, R. C. B. Albinati, A. P. Neves   +4 more
doaj  

Ecological studies on some lakes of the Amazon valley

, 1967
Of the three types of lakes studied, clear water, white water, and brown water, the white water lakes are the only ones to have a reasonable autochtonous production of organic matter. Owing probably to the lack of mineral salts, the primary production is
Marlier, G.
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