Results 61 to 70 of about 4,287 (220)

The ichthyofauna in the influence area of the Lajeado reservoir, Tocantins state, Brazil [PDF]

open access: yesCheck List, 2017
Five rivers and 13 streams in the influence area of the Lajeado reservoir (upper-middle Tocantins River) were sampled in 5 expeditions. A total of 194 fish species were recorded and with the Characiformes and Siluriformes predominant, following the ...
Renata Bartolette   +14 more
doaj   +3 more sources

Long‐term interventions by conservation and development projects support successful recovery of tropical peatlands in Amazonia

open access: yesPeople and Nature, Volume 7, Issue 4, Page 871-886, April 2025.
Abstract Rural communities in Amazonia rely on harvesting Mauritia flexuosa fruit, a dominant peatland palm, for their subsistence and income. However, these palms are felled to harvest the fruits, which has led to reduced resource availability due to the pressure exerted by the increasing fruit demand.
Eurídice N. Honorio Coronado   +24 more
wiley   +1 more source

Biologia reprodutiva de Heros efasciatus Heckel, 1840 (Pisces, Cichlidae) na Reserva de Desenvolvimento Sustentável Amanã-AM, visando seu manejo sustentável Reproductive biology of Heros efasciatus Heckel,1840 (Pisces, Cichlidae) in the Amanã Sustainable Reserve (Amazonas, Brazil), aiming at sustainable management of the species

open access: yesActa Amazonica, 2010
Com o principal objetivo de fornecer ferramentas para auxiliar na implementação do manejo sustentável de peixes ornamentais na Reserva de Desenvolvimento Sustentável Amanã, Amazonas, foi realizado o estudo da biologia reprodutiva de Heros efasciatus ...
Jana Menegassi del Favero   +2 more
doaj   +1 more source

Karyotype diversity between species of Crenicichla (Perciformes, Cichlidae) from different Brazilian hydrographic basins

open access: yesGenetics and Molecular Biology, 2019
Crenicichla is the largest genus in the Cichlidae family in South America. The genus includes 100 valid species that are popularly known in Brazil as jacundás or joaninhas and are widely distributed in rivers east of the Andes.
Larissa Bettin Pires   +3 more
doaj   +1 more source

Parasitic diversity of a wild Satanoperca jurupari population, an ornamental cichlid in the Brazilian Amazon [PDF]

open access: yesActa Amazonica, 2017
Assessment of biodiversity is fundamental for the understanding of ecological interactions, but fish parasites were neglected in biodiversity estimates for a long time.
Marcos TAVARES-DIAS   +3 more
doaj   +1 more source

Description of the reproductive behavior of Symphysodon aequifasciatus (Cichlidae) in captivity [PDF]

open access: yesActa Amazonica, 2016
ABSTRACT The blue discus (Symphysodon aequifasciatus) is often sold for ornamental purposes. It is a neotropical cichlid from South America, which is native to the rivers of the Amazon basin of Brazil, Peru and Colombia. The purpose of this study was to characterize the reproductive behavior of S.
MATTOS, Douglas da Cruz   +3 more
openaire   +5 more sources

Morphological diversity of the genus Telmatochromis from the Lake Tanganyika drainage with the description of a new riverine species and the generic reassignment of the Malagarasi River lamprologine

open access: yesJournal of Fish Biology, Volume 106, Issue 4, Page 1214-1230, April 2025.
Abstract The lamprologine cichlid genus Telmatochromis was long considered primarily lacustrine and endemic to Lake Tanganyika until an undescribed Telmatochromis species was reported from the Lufubu River (Lake Tanganyika drainage, Zambia). A phylogenomic study in 2021 confirmed the association of Telmatochromis sp.
Adrian Indermaur   +2 more
wiley   +1 more source

The influence of salinity increasing on the fish communities in the east of Al-Hammar marsh- southern Iraq

open access: yesالمجلة العراقية للاستزراع المائي, 2019
The study included the effect of the advancement of the saline front on the composition of the fish catchment of the East Hamar marsh for the period from January 2018 to December 2018.
Ghassan, A. Al-Najjar
doaj   +1 more source

Robust Sensory Traits Across Light Habitats: Visual Signals but Not Receptors Vary in Centrarchids Inhabiting Distinct Photic Environments

open access: yesMolecular Ecology, Volume 34, Issue 8, April 2025.
ABSTRACT Visual communication in fish is often shaped by their light environment, which influences both sensory (e.g., eye size, opsin gene expression) and signalling traits (e.g., body reflectance). This study explores the phenotypic variation in the visual communication traits of six species of centrarchids (Centrarchidae) inhabiting two contrasting ...
César Bertinetti   +3 more
wiley   +1 more source

A new species of Gymnogeophagus from the río Negro and río Tacuarí basins, Uruguay (Teleostei: Perciformes)

open access: yesNeotropical Ichthyology
The new cichlid species Gymnogeophagus tiraparae is described from the río Negro and río Tacuarí basins (Uruguay). The new species is distinguished from other Gymnogeophagus species by the unique presence of the following characters: adipose hump on head
Iván González-Bergonzoni   +2 more
doaj   +1 more source

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