Results 11 to 20 of about 14,323 (223)

Threshold responses of floating meadow fish communities to floodplain forest cover in the lower Amazon River. [PDF]

Conserv Biol
Abstract Forest cover is positively associated with fish biomass and fisheries yield in the Amazon River floodplain, and many species enter flooded forests to feed, spawn, or seek refuge from predation. Floating macrophyte beds, known as floating meadows, in Amazon floodplains support high fish diversity and serve as nursery habitat for many fishes of ...
Grinstead S, Arantes CC, Winemiller KO, Kelso-Winemiller LC, de Oliveira JA, Petrere M, Freitas CEC.   +6 more
europepmc   +2 more sources

Hydrological Connectivity Enhances Fish Biodiversity in Amazonian Mining Ponds: Insights From eDNA and Traditional Sampling. [PDF]

Mol Ecol
ABSTRACT Artisanal and small‐scale gold mining (ASGM) expansion in the Madre de Dios region of the Peruvian Amazon has transformed primary forests into a novel wetland complex of thousands of abandoned mining ponds. Despite their ecological relevance, post‐mining recovery of these systems remains understudied, particularly regarding fish biodiversity ...
Timana-Mendoza C, Reyes-Calderón A, Venail P, Britzke R, Santa-Maria MC, Araújo-Flores JM, Silman M, Fernandez LE.   +7 more
europepmc   +2 more sources

Early Biogeography of Otophysi Points to the Neotropics as the Cradle of Characiphysan Fishes. [PDF]

Ecol Evol
Otophysan fishes represent 70% of living freshwater fishes with 12,000 species. Relationships among their four orders were explored through a dense taxonomic sampling including 529 complete mitochondrial genomes and 4 nuclear genes for 324 species.
Lenglin A, Hidalgo M, Miranda G, De la Sota A, Caminade P, Belkhir K, Otero O, Antoine PO, Garcia-Davila C, Hubert N.   +9 more
europepmc   +2 more sources

A Global Account of Established Non-Native Fish Species. [PDF]

Glob Chang Biol
This study compiles the most complete global database of non‐native fish species that have successfully established themselves in new freshwater and marine environments. It documents 1535 species across 193 countries, identifies their main introduction routes—such as aquarium trade, aquaculture, and artificial waterways—and highlights that many ...
Haubrock PJ, Novello M, Abreo NA, Błońska D, Sampaio Franco AC, Soto I, Castaldelli G, Katsanevakis S, Kouba A, Balzani P, Kurtul I, Tarkan AS, Briski E, Britton R.   +13 more
europepmc   +2 more sources

Caudal Spotting in the Beacon Fish (Hemigrammus ocellifer Characidae) [PDF]

Journal of Heredity, 2002
The beacon fish (Hemigrammus ocellifer) exhibits two phenotypes associated with spotting at the base of the caudal fin, with fish either possessing (H. o. ocellifer) or lacking (H. o. falsus) a prominent red spot in this region. Segregation patterns observed from the progenies of 15 different crosses support a hypothesis that caudal spotting in this ...
Jack S. Frankel
openalex   +3 more sources

The Complete Mitogenome of Amazonian Hyphessobrycon heterorhabdus (Characiformes: Characidae) as a Valuable Resource for Phylogenetic Analyses of Characidae

Fishes, 2023
Hyphessobrycon heterorhabdus (Ulrey, 1894), popularly known as ‘Flag Tetra’ in English speaking countries, belongs to the genus Hyphessobrycon of the family Characidae, and is widely present in the eastern Amazon basin. Here, using Illumina sequencing, we report the complete mitogenome sequence of H. heterorhabdus. Overall, the mitogenome has 17,021 bp,
Luciano Fogaça de Assis Montag, Ricardo Koroiva, Ândrea Ribeiro-dos-Santos, Leandro Magalhães, Giovanna C. Cavalcante, Caio S. Silva, Sávio Guerreiro, Daniel H. F. Gomes, Jorge E. S. de Souza, Sandro J. de Souza, Lidia Brasil Seabra, Maria Dayanne Lima de Lucena, Erival Gonçalves Prata, Izabella Cristina da Silva Penha, Thaisa Sala Michelan, Raphael Ligeiro, Leandro Juen   +16 more
openaire   +2 more sources

Linking anatomical and histological traits of the digestive tract to resource consumption and assimilation of omnivorous tetra fishes. [PDF]

Ecol Evol
This study investigates digestive traits and dietary patterns in omnivorous tetra fishes from the Iguaçu River basin, known for high endemism. The researchers found that while the tetra fishes shared histological structures, anatomical differences in digestive traits correlated with distinct dietary preferences.
Neves MP, Amorim JPA, Delariva RL, Kratina P, Fialho CB.   +4 more
europepmc   +2 more sources

On the habitat and isolation of Gymnocharacinus bergi (Osteichthyes: Characidae) [PDF]

Environmental Biology of Fishes, 1995
Gymnocharacinus bergi is a rare Paranensean fish which is the only characiform almost lacking scales in the adult. It is endemic and the only species in a peculiar spot — a tributary of the Valcheta creek — in the Somuncura plateau in northern Patagonia, Argentina, over 300 km from the nearest place with a paranensean fish fauna.
Menni, Roberto Carlos, Gómez, Sergio E.
openaire   +1 more source

Sperm phylogeny of Characidae (Teleostei, Characiformes)

Zoologica Scripta, 2022
AbstractThe phylogeny of the very diverse Neotropical fish family Characidae has been the subject of several recent contributions based on morphological characters, molecular data or both in combined analyses. In cases of conflict between these kinds of data, resolution by combined analyses most often tends to agree with the molecular evidence, given ...
Juan Marcos Mirande, Clarianna M. Baicere‐Silva, Júlio C. O. Santana, Irani Quagio‐Grassiotto   +3 more
openaire   +2 more sources

Biologia do saguirú (Characidae, Curimatinae) [PDF]

Memórias do Instituto Oswaldo Cruz, 1938
In Brazil all the fishes belonging to the sub-family Curimatinae are called « saguirú ». The present work gives a biological study of the Curimatus elegans Steind., a small fish without any economical importance, which is to be found along the whole brazilian coast, down till Paraguay.
Azevedo, P. de, Dias, M. Vianna, Vieira, B. Borges   +2 more
openaire   +3 more sources