Trophic niche segregation among herbivorous serrasalmids from rapids of the lower Xingu River, Brazilian Amazon

Hydrobiologia ◽  
2018 ◽  
Vol 829 (1) ◽  
pp. 265-280 ◽  
Author(s):  
Marcelo C. Andrade ◽  
Daniel B. Fitzgerald ◽  
Kirk O. Winemiller ◽  
Priscilla S. Barbosa ◽  
Tommaso Giarrizzo
Keyword(s):  
Brazilian Amazon ◽  
Trophic Niche ◽  
Niche Segregation ◽  
Xingu River

scholarly journals Trends in climate extreme indices assessed in the Xingu river basin - Brazilian Amazon

2021 ◽  
Vol 31 ◽  
pp. 100306
Author(s):  
Edmundo Wallace Monteiro Lucas ◽  
Francisco de Assis Salviano de Sousa ◽  
Fabrício Daniel dos Santos Silva ◽  
Rodrigo Lins da Rocha Júnior ◽  
David Duarte Cavalcante Pinto ◽  
...  
Keyword(s):  
River Basin ◽  
Brazilian Amazon ◽  
Climate Extreme ◽  
Xingu River ◽  
Extreme Indices

scholarly journals Trophic niche segregation allows range‐extending coral reef fishes to co‐exist with temperate species under climate change

2019 ◽  
Vol 26 (2) ◽  
pp. 721-733 ◽  
Author(s):  
Kelsey M. Kingsbury ◽  
Bronwyn M. Gillanders ◽  
David J. Booth ◽  
Ivan Nagelkerken
Keyword(s):  
Climate Change ◽  
Coral Reef ◽  
Reef Fishes ◽  
Trophic Niche ◽  
Coral Reef Fishes ◽  
Temperate Species ◽  
Niche Segregation

A new Planothidium species (Achnanthidiaceae, Bacillariophyceae) from Xingu Ria, Amazon River basin, Brazil

Phytotaxa ◽  
2020 ◽  
Vol 477 (2) ◽  
pp. 194-204
Author(s):  
KRYSNA S. MORAIS ◽  
LÍVIA F. COSTA ◽  
CARLOS E. DE M. BICUDO ◽  
LUC ECTOR ◽  
CARLOS E. WETZEL
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
New Species ◽  
River Basin ◽  
Brazilian Amazon ◽  
Diatom Species ◽  
Amazon River Basin ◽  
Sediment Samples ◽  
Xingu River ◽  
Scanning Electron

A new Planothidium species was found in sediment samples (~4,000 yr BP) from the Xingu Ria (Xingu River), Brazilian Amazon. The new species morphology was analyzed using light and scanning electron microscopy. Planothidium xinguense sp. nov., is mainly characterized by its elliptical, slightly asymmetrical valves, with strongly marked short rostrate ends in the small specimens, while long and strongly rostrate apices are observable in the larger valves. The taxon belongs to the group of species bearing a cavum on the rapheless valves around the name “Planothidium rostratum sensu lato”. Morphology and ecology of the new species is compared with that of morphologically related taxa. Information of core chronology and the co-occurrence of other diatom species in the sample is also provided.

Relationship between body shape and trophic niche segregation in two closely related sympatric fishes

2008 ◽  
Vol 73 (4) ◽  
pp. 809-828 ◽  
Author(s):  
T. Russo ◽  
D. Pulcini ◽  
Á. O’Leary ◽  
S. Cataudella ◽  
S. Mariani
Keyword(s):  
Body Shape ◽  
Trophic Niche ◽  
Niche Segregation

Influence of Life History Traits on Trophic Niche Segregation between Two Similar SympatricTupinambisLizards

2015 ◽  
Vol 10 (2) ◽  
pp. 132-142 ◽  
Author(s):  
Guadalupe López Juri ◽  
Sergio Naretto ◽  
Ana Carolina Mateos ◽  
Margarita Chiaraviglio ◽  
Gabriela Cardozo
Keyword(s):  
Life History ◽  
Life History Traits ◽  
Trophic Niche ◽  
Niche Segregation

scholarly journals Saprophytic flies in impacted areas of the Belo Monte Dam, Pará, Brazil (Diptera: Mesembrinellidae, Neriidae, Ropalomeridae, and Sarcophagidae): community composition, abundance, and species richness

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Camila Lorena Damasceno Queiroz ◽  
Caroline Costa De-Souza ◽  
Hermes Fonseca de Medeiros ◽  
William Leslie Overal ◽  
Arleu Barbosa Viana-Junior ◽  
...  
Keyword(s):  
Species Richness ◽  
Community Composition ◽  
New Record ◽  
New Records ◽  
Brazilian Amazon ◽  
Species Accumulation Curves ◽  
Xingu River ◽  
Hydroelectric Dam ◽  
Accumulation Curves ◽  
Belo Monte

Abstract: The present study aims to document the community composition, abundance, and species richness of saprophytic fly species (Mesembrinellidae, Neriidae, Ropalomeridae, and Sarcophagidae) of the Volta Grande region of the Xingu River, a poorly sampled area impacted by the Belo Monte hydroelectric dam. Five collecting trips were carried out between 2014 and 2016, when traps baited with fermenting bananas were used. A total of 154 specimens, three genera, and six species were collected of Mesembrinellidae; 196 specimens, three genera, and seven species of Neriidae; 272 specimens, three genera, and six species of Ropalomeridae; and 624 specimens, 22 species and 10 genera of Sarcophagidae. Species accumulation curves for all families except Sarcophagidae demonstrated a strong tendency towards stabilization, showing that sampling efforts were sufficient to record most of the targeted species. Laneela perisi (Mariluis, 1987) (Mesembrinellidae) is a new record for the state of Pará. Among Ropalomeridae, Apophorhynchus amazonensisPrado, 1966, is a new record for Pará. Among Sarcophagidae, Helicobia aurescens (Townsend, 1927) is newly recorded from the Brazilian Amazon, and Ravinia effrenata (Walker, 1861) and Titanogrypa larvicida (Lopes, 1935) are new records for Pará.

Passiflora echinasteris: a new species of subgenus Passiflora, series Serratifoliae (Passifloraceae) from the Brazilian Amazon

Phytotaxa ◽  
2015 ◽  
Vol 208 (2) ◽  
pp. 170 ◽  
Author(s):  
Ana Kelly Koch ◽  
André Luiz De Rezende Cardoso ◽  
Anna Luiza Ilkiu-Borges
Keyword(s):  
New Species ◽  
Related Species ◽  
Brazilian Amazon ◽  
Xingu River ◽  
Secondary Vegetation ◽  
Brazilian Species ◽  
A New Species

Passiflora echinasteris from a secondary vegetation area on the Great Curve of the Xingu River, in the Brazilian Amazon, is newly described. It belongs to the series Serratifoliae with three other Brazilian species. The new species is illustrated and its affinities with related species are discussed, and a key to the Brazilian species of the series is provided.

scholarly journals New records of Boana icamiaba (Anura: Hylidae) in the Brazilian Amazon rainforest

Caldasia ◽  
2019 ◽  
Vol 41 (2) ◽  
pp. 442-444
Author(s):  
Samuel F. Dos Anjos ◽  
Wanne S. S. Wronski ◽  
Marcos Penhacek ◽  
Janaina Da Costa Noronha ◽  
Karll C. Pinto ◽  
...  
Keyword(s):  
New Records ◽  
Brazilian Amazon ◽  
Amazon Rainforest ◽  
Mato Grosso ◽  
Xingu River ◽  
Anuran Species ◽  
Northern Brazil

Boana icamiaba is an Amazonian anuran species reported for sites in the mid-lower Madeira-Rio Tapajós River and lower Tapajós-Rio, and Xingu River interfluves – municipalities of Juruti, Altamira, Santarém, and Itaituba, state of Pará, northern Brazil. We provided the first records of Boana icamiaba for the states of Mato Grosso and Rondônia, central and northern Brazil, which enlarges the knowledge on its distribution in approximately 470 km southmost and circa 886 km southwestmost from the nearest previously recorded locality. 

scholarly journals Coexistence of Two Closely Related Cyprinid Fishes (Hemiculter bleekeri and Hemiculter leucisculus) in the Upper Yangtze River, China

Diversity ◽  
2020 ◽  
Vol 12 (7) ◽  
pp. 284
Author(s):  
Wen Jing Li ◽  
Xin Gao ◽  
Huan Zhang Liu ◽  
Wen Xuan Cao
Keyword(s):  
Yangtze River ◽  
Morphological Analysis ◽  
Species Coexistence ◽  
Spatial Dimension ◽  
Trophic Niche ◽  
Niche Segregation ◽  
Upper Yangtze River ◽  
Cyprinid Fishes ◽  
Morphological Differences ◽  
The Upper Yangtze River

Species coexistence is one of the most important concepts in ecology for understanding how biodiversity is shaped and changed. In this study, we investigated the mechanism by which two small cyprinid fishes (H. leucisculus and H. bleekeri) coexist by analyzing their niche segregation and morphological differences in the upper Yangtze River. Morphological analysis indicated that H. leucisculus has posteriorly located dorsal fins, whereas H. bleekeri has a more slender body, bigger eyes, longer anal fin base, and a higher head. Niche segregation analysis showed spatial and trophic niche segregation between these two species: on the spatial scale, H. leucisculus was more widely distributed than H. bleekeri, indicating that H. leucisculus is more of a generalist in the spatial dimension; on the trophic scale, H. bleekeri had a wider niche than H. leucisculus. Therefore, these two species adopt different adaptation mechanisms to coexist

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