Results 11 to 20 of about 39,651 (306)

Fish die-off in river and reservoir: A review on anoxia and gas supersaturation

Neotropical Ichthyology, 2021
Albeit massive fish mortality has an extraordinary visual impact and is certainly a fatality, we still have rudimentary understanding on how addressing this problem in the Neotropical region. The processes that lead to fish die-off events are complex and
Angelo Antonio Agostinho, Diego Correa Alves, Luiz Carlos Gomes, Rosa Maria Dias, Miguel Petrere Jr, Fernando Mayer Pelicice   +5 more
doaj   +1 more source

CRATER LAKE COLONIZATION BY NEOTROPICAL CICHLID FISHES [PDF]

Evolution, 2012
Volcanic crater lakes are isolated habitats that are particularly well suited to investigating ecological and evolutionary divergence and modes of speciation. However, the mode, frequency, and timing of colonization of crater lakes have been difficult to determine.
Elmer, Kathryn R., Fan, Shaohua, Meyer, Axel, Lehtonen, Topi K.   +3 more
openaire   +4 more sources

Phagocytotic activity and gene expression of leukocytes isolated from Astyanax lacustris

Brazilian Journal of Biology, 2023
The constant intensification of aquaculture has considerable increased the stress levels of farmed fish and, consequently, the number and intensity of diseases outbreaks. Thus, studies on fish immune response, especially regarding the interaction of fish
N. Levy-Pereira, M. M. Carriero, S. R. L. Maganha, C. M. Meira, T. M. Lázaro, N. R. A. Rocha, A. A. M. Maia, G. Wiegertjes, A. M. Fernandes, R. L. M. Sousa   +9 more
doaj   +1 more source

Genomic Resources for Salminus brasiliensis

Frontiers in Genetics, 2022
The Neotropical region bears the most diverse freshwater fish fauna on the planet and is the stage for dramatic conservation struggles. Initiatives aiming for conservation of a single emblematic fish, a flagship species, to which different onlookers ...
Raissa Cristina Dias Graciano, Rafael Sachetto Oliveira, Isllas Miguel Santos, Gabriel M. Yazbeck, Gabriel M. Yazbeck   +4 more
doaj   +1 more source

Impact of a large dam on reproduction of a non-migratory teleost species, Acestrorhynchus lacustris (Characiformes: Acestrorhynchidae) [PDF]

Brazilian Journal of Biology, 2021
The release of water from the reservoir hypolimnion, lower concentration of oxygen and the anthropogenic regulation of the river flow, could affect the reproduction of fish, especially migratory species.
R. Z. Gomes, A. L. Paschoalini, A. A. Weber, K. B. Santiago, E. Rizzo, N. Bazzoli   +5 more
doaj   +1 more source

Autonomous detection of neotropical sciaenid fishes [PDF]

Proceedings of Meetings on Acoustics, 2012
Sciaenid passive acoustics are a demonstrated valuable tool for fisheries management. In spite of this, an efficient software tool to detect and identify fish sounds is not currently available. Such tool would be useful for autonomous recognition and array methodologies.
Sebastian Ruiz-Blais, Mario R. Rivera-Chavarria, Arturo Camacho   +2 more
openaire   +1 more source

Fish Viscera Silage: Production, Characterization, and Digestibility of Nutrients and Energy for Tambaqui Juveniles

Fishes, 2023
Fish viscera can be an important source of protein and energy for aquafeed, and its use contributes to circular aquaculture. The aim of this study was to produce acid and fermented silage from fish viscera to determine their nutritional value and the ...
Thiago Macedo Santana, Francisco de Matos Dantas, Driely Kathriny Monteiro Dos Santos, Juliana Tomomi Kojima, Yugo Moraes Pastrana, Rogério Souza De Jesus, Ligia Uribe Gonçalves   +6 more
doaj   +1 more source

Functional responses to deforestation in fish communities inhabiting neotropical streams and rivers

Ecological Processes, 2023
Background Deforestation is a widespread disturbance for neotropical freshwater ecosystems. While biodiversity declines have been associated with deforestation, its functional consequences for stream and river fish faunas remain poorly understood.
Isabel Cantera, Céline Jézéquel, Tony Dejean, Jérôme Murienne, Régis Vigouroux, Alice Valentini, Sébastien Brosse   +6 more
doaj   +1 more source

Comparative Chromosome Maps of Neotropical Rodents Necromys lasiurus and Thaptomys nigrita (Cricetidae) Established by ZOO-FISH [PDF]

, 2011
This work presents chromosome homology maps between Mus musculus (MMU) and 2 South American rodent species from the Cricetidae group: Necromys lasiurus (NLA, 2n = 34) and Thaptomys nigrita (TNI, 2n = 52), established by ZOO-FISH using mouse chromosome ...
Diaz GB, D’Élia G, D’Élia G, Engelbrecht A, Fagundes V, Ford CE, Gallardo MH, Geise L, Hass I, I. Hass, I.J. Sbalqueiro, Matsubara K, Matsubara K, Musser GG, Nakamura T, R.F. Artoni, Rambau RV, Reig OA, Romanenko SA, S. Müller, Sbalqueiro IJ, Seabright M, Silva MJ, Smith MF, Smith MF, Stanyon R, Ventura K, Ventura K, Yang F   +28 more
core   +1 more source

A case of intersex occurrence in Steindachneridion parahybae (Steindachner, 1877) (Siluriformes: Pimelodidae) under captivity condition: A cytogenetic and morphological study [PDF]

, 2016
Poco se sabe sobre la biología reproductiva de Steindachneridion parahybae , una especie de teleósteo gonocorístico en peligro de extinción que habita la cuenca del río Paraíba do Sul y en éste trabajo se describe por primera vez la aparición de ...
Caneppele, Danilo, Honji, Renato Massaaki, Lo Nostro, Fabiana Laura, Moreira, Renata G., Pandolfi, Matias   +4 more
core   +2 more sources