Access the full text.
Sign up today, get DeepDyve free for 14 days.
C. Peterson, P. McIntyre (1998)
Ontogenetic diet shifts in Roeboides affinis with morphological comparisonsEnvironmental Biology of Fishes, 53
L. Useche, P. Cala, R. Hurtado (1993)
Sobre la ecología de Brycon siebenthalae y Mylossoma duriventris (Piscis: Characidae), en el río Cafre, OrinoquiaCaldasia, 17
K. Drewe, M. Horn, K. Dickson, A. Gawlicka (2004)
Insectivore to frugivore: ontogenetic changes in gut morphology and digestive enzyme activity in the characid fish Brycon guatemalensis from Costa Rican rain forest streamsJournal of Fish Biology, 64
J Carolsfeld, B Harvey, C Ross, A Baer (2003)
Migratory Fishes of South America
MP Godoy (1975)
Peixes do Brasil: subordem Characoidei, bacia do Rio Mogi Guassu
V. Pillar, L. Orlóci (1996)
On randomization testing in vegetation science: multifactor comparisons of relevé groupsJournal of Vegetation Science, 7
A. Magurran (1990)
Ecological Diversity and Its MeasurementBiometrics, 46
R. Reis, S. Kullander, C. Ferraris (2003)
Check list of the freshwater fishes of South and Central America
RH Lowe-McConnell (1964)
The fishes of the Rupununi savanna district of British Guiana, Pt. 1. Groupings of fish species and effects of seasonal cycles on the fishZoological Journal of the Linnean Society, 45
M. Horn (1989)
Biology of marine herbivorous fishesOceanography and Marine Biology, 27
R. Lowe (1964)
The fishes of the Rupununi savanna district of British Guiana, South AmericaPart 1. Ecological groupings of fish species and effects of the seasonal cycle on the fishZoological Journal of the Linnean Society, 45
R. Barthem, M. Ribeiro, M. Petrere (1991)
Life Strategies of some Long-Distance Migratory Catfish in Relation to Hydroelectric Dams in the Amazon BasinBiological Conservation, 55
F. Lima, M. Albrecht, C. Pavanelli, Volney. Vono (2008)
Threatened fishes of the world: Brycon nattereri Günther, 1864 (Characidae)Environmental Biology of Fishes, 83
M Petrere, MCLB Ribeiro (1994)
The impact of a large tropical hydroelectric dam: the case of Tucuruí in the middle river TocantinsActa Limnologica Brasiliensis, 5
B. Mérona, R. Vigouroux, V. Horeau (2003)
Changes in food resources and their utilization by fish assemblages in a large tropical reservoir in South America (Petit-Saut Dam, French Guiana)Acta Oecologica-international Journal of Ecology, 24
K. Winemiller (1990)
Spatial and Temporal Variation in Tropical Fish Trophic NetworksEcological Monographs, 60
K. Winemiller (1989)
Ontogenetic diet shifts and resource partitioning among piscivorous fishes in the Venezuelan ilanosEnvironmental Biology of Fishes, 26
VP Pillar (1999)
MULTIV, software para análise multivariada e testes de aleatorização
K. Winemiller (1989)
Patterns of variation in life history among South American fishes in seasonal environmentsOecologia, 81
F. Lima (2004)
Brycon gouldingi, a new species from the rio Tocantins drainage, Brazil (Ostariophysi: Characiformes: Characidae), with a key to the species in the basinIchthyological Exploration of Freshwaters, 15
I. Cowx (1994)
Rehabilitation of freshwater fisheries
R Margalef (1983)
Limnología
JR Cânepa (1988)
Comportamento alimentario del “sábalo cola roja” Brycon erythropterum (Pisces: Characidae)Boletin de Lima, 59
RH Lowe-McConnell (1987)
Ecological Studies in Tropical Fish Communities
A. Begossi, F. Braga (1992)
Food taboos and folk medicine among fishermen from the Tocantins River (Brazil), 12
H. Sioli (1990)
Amazônia : fundamentos da ecologia da maior região de florestas tropicais
AEAM Vazzoler (1996)
Biologia reprodutiva de peixes Teleósteos: teoria e prática
K. Winemiller, E. Pianka (1990)
Organization in Natural Assemblages of Desert Lizards and Tropical FishesEcological Monographs, 60
D. Kramer, M. Bryant (1995)
Intestine length in the fishes of a tropical stream: 2. Relationships to diet — the long and short of a convoluted issueEnvironmental Biology of Fishes, 42
AA Agostinho, AEAM Vazzoler, SM Thomaz (1995)
Limnology in Brazil
JLC Novaes, EP Caramaschi, KO Winemiller (2004)
Feeding of Cichla monoculus Spix, 1829 (Teleostei: Cichlidae) during and after reservoir formation in the Tocantins river, Central BrazilActa Limnologica Brasiliensis, 16
R. Lowe‐Mcconnell (1987)
Ecological studies in tropical fish communities: Frontmatter
H. Jager, J. Chandler, Ken Lepla, W. Winkle (2004)
A Theoretical Study of River Fragmentation by Dams and its Effects on White Sturgeon PopulationsEnvironmental Biology of Fishes, 60
FCT Lima, RMC Castro (2000)
Brycon vermelha, a new species of characid fish from the Rio Mucuri, a coastal river of eastern Brazil (Ostariophysi: Characiformes)Ichthyological Exploration of Freshwaters, 11
R. Svanbäck, L. Persson (2004)
Individual diet specialization, niche width and population dynamics: implications for trophic polymorphismsJournal of Animal Ecology, 73
J. Holmquist, J. Schmidt-Gengenbach, B. Yoshioka (1998)
High Dams and Marine‐Freshwater Linkages: Effects on Native and Introduced Fauna in the CaribbeanConservation Biology, 12
B. Mérona, G. Santos, R. Almeida (2001)
Short Term Effects of Tucuruí Dam (Amazonia, Brazil) on the Trophic Organization of Fish CommunitiesEnvironmental Biology of Fishes, 60
R Filippo, EL Gomes, J Lenz-César, CBP Soares, CFS Menezes (1999)
Ecologia de reservatórios: estrutura, função e aspectos sociais
M. Power (2001)
Prey exchange between a stream and its forested watershed elevates predator densities in both habitats.Proceedings of the National Academy of Sciences of the United States of America, 98 1
M. Horn (1997)
Evidence for dispersal of fig seeds by the fruit-eating characid fish Brycon guatemalensis Regan in a Costa Rican tropical rain forestOecologia, 109
NA Menezes (1969)
The food of Brycon and three closely related genera of the tribe AcestrorhynchiniPapéis Avulsos de Zoologia, 22
D. Bolnick, R. Svanbäck, R. Svanbäck, J. Fordyce, Louie Yang, Jeremy Davis, C. Hulsey, M. Forister (2002)
The Ecology of Individuals: Incidence and Implications of Individual SpecializationThe American Naturalist, 161
RO Anderson, RM Neumann (1996)
Fisheries Techniques
J. Tundisi, M. Straškraba (1999)
Theoretical reservoir ecology and its applications
M. Albrecht, É. Caramaschi (2003)
Feeding Ecology of Leporinus friderici (Teleostei; Anostomidae) in the Upper Tocantins River, Central Brazil, before and after Installation of a Hydroelectric PlantStudies on Neotropical Fauna and Environment, 38
M. Ribeiro, M. Petrere, A. Juras (1995)
Ecological integrity and fisheries ecology of the Araguaia-Tocantins river basin, BrazilRegulated Rivers-research & Management, 11
E Zaniboni-Filho, EK Resende (1988)
Anatomia de gônadas, escala de maturidade e tipo de desova da matrinchã, Brycon cephalus (Günther, 1869) (Teleostei: Characidae)Revista Brasileira de Biologia, 48
P. Fearnside, M. Goulding (1981)
The Fishes and the Forest: Explorations in Amazonian Natural HistoryBioScience
Evanilde Cecilio, A. Pereira, C. Sakuragui (2004)
Effect of size on the energy acquired in species of the fish from a neotropical reservoir, BrazilEnvironmental Biology of Fishes, 71
J Burcham (1988)
Fish communities and environmental characteristics of two lowland streams in Costa RicaRevista de Biología Tropical, 36
S. Banack, M. Horn, A. Gawlicka (2002)
Disperser‐ vs. Establishment‐Limited Distribution of a Riparian Fig Tree (Ficus insipida) in a Costa Rican Tropical Rain Forest1Biotropica, 34
J. Carolsfeld, B. Harvey, C. Ross, A. Baer (2004)
Migratory fishes of South America. Biology, fisheries and conservation status.
E. Greathouse, C. Pringle, W. McDowell, J. Holmquist (2006)
Indirect upstream effects of dams: consequences of migratory consumer extirpation in Puerto Rico.Ecological applications : a publication of the Ecological Society of America, 16 1
D. Vázquez, D. Simberloff (2002)
Ecological Specialization and Susceptibility to Disturbance: Conjectures and RefutationsThe American Naturalist, 159
K. Kubitzki, Albrecht Ziburski (1994)
Seed dispersal in flood plain forests of AmazoniaBiotropica, 26
S. Gerking (1994)
Feeding Ecology of Fish
W. Matthews (1998)
Patterns in Freshwater Fish Ecology
CJ Krebs (1989)
Ecological Methodology
J. Zuanon, G. Santos, E. Ferreira (2009)
Peixes comerciais de Manaus
Aea Vazzoler (1996)
M. , Biologia da Reprodução de Peixes Teleósteos. Teoria e Prática. Maringá: EDUEM/SBI. 169 pp.
Brycon gouldingi and B. falcatus were the most abundant and widespread of five species of the genus captured in a sampling study encompassing 5 years (1995–2000) in the upper Rio Tocantins, where the river was impounded by the Serra da Mesa hydroelectric dam. Given that impoundments constitute a disturbance to which species will show demographic and biological responses, we assessed such responses of these two omnivorous fishes, whose genus is regarded as vulnerable to impoundments. Both species increased greatly in numbers during the initial reservoir filling period. Brycon gouldingi had higher abundance values than B. falcatus in all sampling months, except in the pre-impoundment period. Both species showed a significant weight increment relative to body length during the time they remained in the reservoir. No reproductive individuals of B. gouldingi were recorded in the study area, but those few of Brycon falcatus were found in both wet and dry seasons, suggesting a more opportunistic strategy of reproduction. Both species were omnivorous and overlapped broadly in diet. The proportions of dietary items, however, varied in relation to fish size class and water dynamics (lotic versus lentic sites). Terrestrial arthropods composed a larger proportion of the diet of smaller-sized individuals and those from lentic sites, whereas seeds and fruits contributed more to the diet of both larger-sized individuals and those from lotic environments. Except for fish and aquatic heteropterans, which were consumed mainly in the reservoir, all other food items were allochthonous, indicating the dependence of these two species of Brycon on the terrestrial environment. The two species responded similarly to the alterations imposed by the impoundment of the upper Tocantins, although reproduction/recruitment pattern was slightly different between species. As observed in other regions of Brazil, impoundments and deforestation appear to produce negative cumulative effects on species of Brycon. These impacts call for greater efforts to conserve and manage members of this diverse and widespread genus.
Hydrobiologia – Springer Journals
Published: Feb 26, 2009
Read and print from thousands of top scholarly journals.
Already have an account? Log in
Bookmark this article. You can see your Bookmarks on your DeepDyve Library.
To save an article, log in first, or sign up for a DeepDyve account if you don’t already have one.
Copy and paste the desired citation format or use the link below to download a file formatted for EndNote
Access the full text.
Sign up today, get DeepDyve free for 14 days.
All DeepDyve websites use cookies to improve your online experience. They were placed on your computer when you launched this website. You can change your cookie settings through your browser.