Results 191 to 200 of about 950,037 (232)
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Karyotypic evolution in Neotropical freshwater fish
2000The largest freshwater fish fauna of the world is found in the Neotropical region and includes 2500 to 2700 known species [1], and a total number of species that may actually reach 5000 [2]. Until the late seventies not much was known about the cytogenetic characteristics of these fish and the cytogenetic data available about the Neotropical fish fauna
Lurdes F. de Almeida-Toledo +2 more
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Genetic Resources of Freshwater Neotropical Fishes
2017South American rivers contain the most diverse, but also one of the more poorly known, freshwater fish faunas of the world. While significant progress is being made on understanding the systematics and taxonomy of Neotropical fish groups (Malabarba et al.
Alexandre W. S. Hilsdorf +1 more
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Fish farming as the main driver of fish introductions in Neotropical reservoirs
Hydrobiologia, 2014Several human activities may result in or facilitate species introductions. In aquatic environments, species introductions are often associated with the construction of dams. In this study, we use reservoirs of the Neotropical region as a model to determine the main causes of fish species introductions.
Jean C. G. Ortega +3 more
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Ascent of neotropical migratory fish in the Itaipu Reservoir fish pass
River Research and Applications, 2011AbstractThe Piracema Canal is a complex 10‐km fish pass system that climbs 120 m to connect the Paraná River to the Itaipu Reservoir along the Brazil–Paraguay border. The canal was constructed to allow migratory fishes to reach suitable habitats for reproduction and feeding in tributaries upstream from the reservoir.
Makrakis, S +4 more
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Vasotocinergic control of agonistic behavior told by Neotropical fishes
General and Comparative Endocrinology, 2019The hypothalamic neuropeptides of the vasopressin-oxytocin family (and their homologs for non-mammalian species) are key modulators of the Social Brain Network, acting via specific receptors reported in all the nuclei of this network. Different conclusive examples have proven the context-dependency actions of hypothalamic nonapeptides on social ...
Silva, Ana C., Pandolfi, Matias
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Regulation and stability in fish assemblages of neotropical floodplain lakes
Oecologia, 1994Neotropical floodplain lakes provide an excellent opportunity to examine the regulation and stability of fish assemblages. At low water, when lakes are separated, fish are concentrated in the lakes and are presumably subject to strong interspecific interactions that can shape assemblage structure. At high water, when the lakes and river channels become
Macro A, Rodríguez, William M, Lewis
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Gondwana and neotropical galaxioid fish biogeography
1984The galaxioids, Southern Hemisphere salmoniforms (i.e. Galaxiidae, Aplochitonidae, Retropinnidae and Pro-totroctidae), are found in Australia, New Zealand, New Caledonia, South America and South Africa, and include 4 families, 11 genera, and about 45 species.
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Genomic landscape of repetitive DNAs in Neotropical electric fishes
Molecular Genetics and GenomicsThe Neotropical electric fishes of the order Gymnotiformes, known for their unique electrogenic and electrosensory systems, provide exceptional models for investigating ecological and evolutionary questions. While their phylogenetic and cytogenetic diversity is well documented, information about the diversity and evolution of repetitive DNA in ...
Camila do Nascimento Moreira +4 more
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Cryopreserved Semen Motility of South American Neotropical Fish: A Meta-Analysis
Reviews in Fisheries Science and Aquaculture, 2022Danilo Streit +2 more
exaly
Heavy metals affecting Neotropical freshwater fish: A review of the last 10 years of research
Aquatic Toxicology, 2021Alessandro Paschoalini, Nilo Bazzoli
exaly