Morphologic and trophic diversity of fish assemblages in rapids of the Xingu River, a major Amazon tributary and region of endemism

@article{ZuluagaGmez2016MorphologicAT,
  title={Morphologic and trophic diversity of fish assemblages in rapids of the Xingu River, a major Amazon tributary and region of endemism},
  author={Mario Alejandro Zuluaga-G{\'o}mez and Daniel B. Fitzgerald and Tommaso Giarrizzo and Kirk O. Winemiller},
  journal={Environmental Biology of Fishes},
  year={2016},
  volume={99},
  pages={647-658}
}
Increasing hydropower expansion in hyper-diverse tropical river basins is currently threatening aquatic biodiversity on an unprecedented scale. Among the largest and most controversial of these projects is the Belo Monte Hydroelectric Complex being constructed on the Xingu River, a major Amazon tributary in Brazil. Despite the potentially large impacts, almost no baseline ecological data are available for the river’s diverse ichthyofauna. This study uses ecomorphology and stable isotope… 
Trophic niche segregation among herbivorous serrasalmids from rapids of the lower Xingu River, Brazilian Amazon
TLDR
Investigation of the trophic ecology of juveniles and adults of three serrasalmids common in rapids of the Xingu River suggests that either food resources are not limiting, or niches are partitioned by other means.
Diet and trophic structure of the fish assemblage in the mid-course of the Teles Pires River, Tapajós River basin, Brazil
TLDR
The results corroborate the hypothesis that the fish fauna of large, clear water rivers can be sustained by autochthonous resources, and contributes to understanding some determinants of fish production in large Neotropical rivers.
Factors determining the structure of fish assemblages in Tarumã River, Jaru Biological Reserve, Machado River drainage, northern Brazil
ABSTRACT Few studies on fish assemblages and relations with environmental factors in aquatic systems in southeastern Amazonia have been carried out when compared to other areas in the Amazon.
Fish communities critically depend on forest subsidies in small neotropical streams with high biodiversity value
Trophic support of species‐rich tropical fish communities remains uncertain in small forest streams where dense and constant canopy cover strongly limits the solar radiation available to aquatic
Contribution of C and C autotrophic sources for juvenile Characiformes in the 3 4 aquatic herbaceous plants in the Solimões River , Central Amazon , Brazil
Biota Amazônia ISSN 2179-5746 Understanding the factors that control production of commercially important fishes in the Amazon are necessary to effectively manage fisheries resources in the region.
Fish fauna in tributaries of the Suiá-Miçú River (upper Xingu river basin), in the Cerrado-Amazon transition zone, eastern state of Mato Grosso, Brazil
Studies on the fish fauna of the Xingu river basin are mainly concentrated in the main channel of the river or its large tributaries, due to requirements all faunal surveys in hydroelectric power
Biotelemetry reveals migratory behaviour of large catfish in the Xingu River, Eastern Amazon
TLDR
Evidence of migratory behaviour for large catfish within the Xingu River is shown, emphasizing the influence of the hydrologic cycle on their movements.
Body shape separates guilds of rheophilic herbivores (Myleinae: Serrasalmidae) better than feeding morphology
TLDR
Under a phylogenetic framework, micro-computed tomography scanning is used to compare functional feeding traits among 26 species of serrasalmids and compared body shape between pacus using geometric morphometrics to identify potential locomotor adaptations for rheophily, suggesting body shape has more important ties to diet.
‘Taking Fishers’ Knowledge to the Lab’: An Interdisciplinary Approach to Understand Fish Trophic Relationships in the Brazilian Amazon
Trophic levels can be applied to describe the ecological role of organisms in food webs and assess changes in ecosystems. Stable isotopes analysis can assist in the understanding of trophic
...
1
2
...

References

SHOWING 1-10 OF 64 REFERENCES
Population-Level Metrics of Trophic Structure Based on Stable Isotopes and Their Application to Invasion Ecology
TLDR
New metrics derived from stable isotope data are applied to provide quantitative measures of trophic diversity within populations or species to test the hypothesis that sympatric invaders belonging to the same functional feeding group occupy a smaller isotopic niche than their allopatric counterparts.
Ecomorphological Diversification in Lowland Freshwater Fish Assemblages from Five Biotic Regions
TLDR
The analysis supports the thesis that species interactions are important determinants of community morphological features, particularly in species-rich tropical regions and interprets evidence of greater niche diversification at lower latitudes within a habitat type as being derived primarily from the influence of competition and predation.
REVIEW OF THE GEOGRAPHIC DISTRIBUTION OF FISH FAUNA OF THE XINGU RIVER BASIN, BRAZIL
This study is a comprehensive review of fish fauna data for the Xingu River system. Information was compiled from seven field surveys (conducted between 2001 and 2002), bibliographic references, and
Trophic diversity in the evolution and community assembly of loricariid catfishes
TLDR
Phylogenetic regression of assemblage centroid-standardized vectors revealed that loricariid genera with allopatric distributions in disjunct river basins partition basal resources in an evolutionarily conserved manner concordant with patterns of jaw morphological specialization and with evolutionary diversification via ecological radiation.
Stable isotope‐based community metrics as a tool to identify patterns in food web structure in east African estuaries
TLDR
Stable isotope-based Bayesian community-wide metrics are used to investigate patterns in trophic structure in five estuaries that differ in size, sediment yield and catchment vegetation cover in Mozambique and Kenya and the Rianila, and there was seasonality in troPHic structure at Ambila and Betsiboka, as Trophic diversity increased and trophi redundancy decreased from the prewet to the postwet season.
Evolutionary convergence in Neotropical cichlids and Nearctic centrarchids: evidence from morphology, diet, and stable isotope analysis
TLDR
Consistent patterns of ecomorphological convergence in these two perciform groups provide strong evidence for adaptation involving constrains in functional morphology associated with feeding.
Life in the Fast Lane: A Review of Rheophily in Freshwater Fishes
TLDR
A patch dynamics model of how longitudinal shifts in geomorphological and ecological processes from small headwater torrents to large river rapids may differentially affect gene flow among, and evolutionary specialization within, resident rheophilic fish populations is presented.
Functional diversity and trait–environment relationships of stream fish assemblages in a large tropical catchment
SUMMARY 1. The species composition of stream fish assemblages changes across the longitudinal fluvial gradient of large river basins. These changes may reflect both zonation in species distributions
INTERCONTINENTAL CONVERGENCE OF STREAM FISH COMMUNITY TRAITS ALONG GEOMORPHIC AND HYDRAULIC GRADIENTS
Community convergence across biogeographically distinct regions suggests the existence of key, repeated, evolutionary mechanisms relating community characteristics to the environment. However,
...
1
2
3
4
5
...