Results 71 to 80 of about 412 (157)

The Flooding Gradient Affects Seed Dispersal by Fruit‐Eating Fishes in Amazonian Whitewater Floodplain Forests

Biotropica, Volume 58, Issue 3, May 2026.
This research approaches the interaction between frugivorous fish and the flooded forests in the central Amazon. We evaluated the fruit consumption by fish and the seed dispersal potential along the flood gradient. We tested the hypothesis that the role of fish as seed dispersers varies between low várzea (LV) and high várzea (HV) forests.
Gilvan Costa, Sandra Bibiana Correa, Florian Wittmann, Jochen Schöngart, Maria Teresa Fernandez Piedade, Efrem Jorge Ferreira, Leonardo Maltchik   +6 more
wiley   +1 more source

A new Myleus species (Characiformes: Serrasalmidae) from the Rio Tapajós basin, Brazil

Journal of Fish Biology, 2018
Myleus pachyodus, a new serrasalmid species, is described from the Rio Teles Pires and Rio Jamanxim, both tributaries of the Rio Tapajós in Mato Grosso and Pará states, Brazil. The new species differs from all congeners by having a remarkable ontogenetic thickening of the teeth shifting from slender incisiform in juveniles to thick bulky teeth at ...
Andrade, M. C., /Jégu, Michel, Buckup, P. A., Netto-Ferreira, A. L.   +3 more
openaire   +3 more sources

Zingiber officinale (Ginger), Curcuma longa (Turmeric) and Cymbopogon nardus (Lemon Grass) Essential Oils Have Anti‐Dactylogyrideans Potential in Colossoma macropomum Cuvier 1816 (Tambaqui)

Aquaculture, Fish and Fisheries, Volume 5, Issue 6, December 2025.
ABSTRACT Essential oils are composed of secondary metabolites derived from medicinal plants and have bioactive properties, such as antiparasitic activity. This study investigated the in vitro anti‐dactylogyridean efficacy of the Zingiber officinale, Curcuma longa and Cymbopogon nardus essential oils, as well as the acute toxicity for Colossoma ...
João G. R. Luz, Dara A. P. Lacerda, Eloísa F. L. Corrêa, Gabriel F. Araújo, Rafaela F. Araújo, Francisco C. M. Chaves, Marcos Tavares‐Dias   +6 more
wiley   +1 more source

Small fish, large variation: Morphological diversity of Weberian apparatus in Noturus catfishes and ecological implications

The Anatomical Record, Volume 308, Issue 12, Page 3069-3081, December 2025.
Abstract The Weberian apparatus is a hearing specialization unique to the otophysan fishes, and an unexpected degree of morphological variation exists in species of the Noturus catfishes. Our aim in this study is to investigate relationships between morphological variations and ecology that may drive this variation.
J. C. Hoeflich, Juan Liu
wiley   +1 more source

Amazonian fish migration as a social–cultural–ecological process

People and Nature, Volume 7, Issue 12, Page 3297-3312, December 2025.
Abstract In this study, we highlight the rich perspectives and explanations of fish migration held by Indigenous groups across the Amazon. We present the aspects of Indigenous cosmological stories, drawing from our exploratory review of cultural ethnographies and grey literature, as well as the authors' own experiences. We ask, how do Amazonian peoples
LuLu Victoria‐Lacy, Thiago B. A. Couto, Natalia C. Piland, Jesús Dámaso, Stephannie Fernandes, Simone Athayde, Elizabeth P. Anderson   +6 more
wiley   +1 more source

The phylogenetic position of Anacanthorus (Monogenea, Dactylogyridae) parasitizing Brazilian serrasalmids (Characiformes)

Parasite, 2019
Anacanthorus (Anacanthorinae) is one of the most speciose and common genera of neotropical monogeneans, yet there are still many gaps in our knowledge concerning their diversity and phylogeny.
Moreira Juliana, Luque José L., Šimková Andrea   +2 more
doaj   +1 more source

Seasonal Forest Resources Support Fish Biomass in Floodplain Lakes of an Amazonian Tributary

Freshwater Biology, Volume 70, Issue 11, November 2025.
ABSTRACT The Flood Pulse Concept is a foundational ecological theory that emphasizes the critical role of lateral connectivity between a river channel and its floodplain. Many tropical rivers inundate the surrounding floodplain in the flood stage, thereby receiving large amounts of terrestrial organic matter that can be decomposed by microbes and ...
Timothy D. Jardine, Francisco Villamarín, Joseph E. Hawes, Joao Campos‐Silva, Cristina M. Jacobi, Stephen Srayko, Alexander Pelletier, William E. Magnusson   +7 more
wiley   +1 more source

Tometes camunani (Characiformes: Serrasalmidae), a new species of phytophagous fish from the Guiana Shield, rio Trombetas basin, Brazil

Neotropical Ichthyology
A new species of Serrasalmidae, Tometes camunani, is described from the upper drainages of the rio Trombetas basin, Pará State, Brazil. The new species is distinguished from its congeners by having neurocranium with a slight concavity at the level of the
Marcelo C. Andrade, Tommaso Giarrizzo, Michel Jegu   +2 more
doaj   +1 more source

Seleção de presas emalhadas em redes de espera por piranhas, Serrasalmus spilopleura e S. marginatus (Pisces, Serrasalmidae)

Acta Scientiarum: Biological Sciences, 2008
A freqüência de ataque de piranhas aos peixes emalhados foi analisada a partir de capturas mensais utilizando redes de espera, expostas durante 24 horas, com despescas a cada 8 horas, no período de junho de 1987 a maio de 1988, em lagoas, canais e rios ...
Carlos Sérgio Agostinho, Elineide Eugenio Marques   +1 more
doaj   +1 more source

Isonebula clavuslongus n. sp. (Isopoda: Cymothoidae) parasitizing Myloplus ternetzi (Norman, 1929), a fish of the family Serrasalmidae, in the Brazilian Amazon region [PDF]

Anais da Academia Brasileira de Ciências
Crustaceans of the family Cymothoidae are important components of the invertebrate fauna of marine and freshwater environments. The genus Isonebula Taberner, 1977, has only two described species (Isonebula maculatus (Taberner, 1977) and Isonebula ...
MARCOS SIDNEY B. OLIVEIRA, ANDRÉ M. ALVES, ELVIS S. LIMA, EDSON A. ADRIANO, MARCOS TAVARES-DIAS   +4 more
doaj   +1 more source