Results 41 to 50 of about 19,200 (226)
Journal of Fish Biology, EarlyView.Abstract Among the few species of Microcambeva reported as occurring in more than one hydrographic basin, M. ribeirae has been previously listed from both the Ribeira de Iguape and the Guaraqueçaba basins. However, morphological and molecular analyses revealed that the specimens from Guaraqueçaba represent a new species, which is described in this ...
Lucas S. de Medeiros +6 more
wiley +1 more source
Molecular phylogeny of thorny catfishes (Siluriformes: Doradidae)
Molecular Phylogenetics and Evolution, 2013 Doradidae is a monophyletic catfish family endemic to continental South America, and composed of 93 valid species here placed in 31 genera. Existing phylogenetic hypotheses for Doradidae are derived from comprehensive analyses of morphological data, and a single molecular-based study on a limited subset of taxa.
Arce H., Mariangeles +3 more
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An analysis of Nigerian freshwater fishes: those under threat and conservation options [PDF]
, 2005 The study assessed qualitatively the threat status of all nigerian freshwater fishes using such criteria as rarity, size at maturity, mode of reproduction, human population density, habitat degradation, pollution and range of each species among others ...
Bankole, N.O., Olaosebikan, B.D.
core
Fish guild structure along longitudinally determined ecological zonation of Teesta, an Eastern Himalayan River in West Bengal, India [PDF]
, 2013 The Eastern Himalaya Biodiversity Hotspot contains exceptional freshwater biodiversity and ecosystems that are of vital importance to local and regional livelihoods, but these are under threat from the developmental and anthropogenic pressures arising ...
Chakrabarty, M., Homechaudhuri, S.
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Journal of Fish Biology, EarlyView.Abstract Invasive alien species (IAS) pose a significant threat to biodiversity, particularly when endowed with high ecological and reproductive plasticity. The African catfish, Clarias gariepinus, is one such species, widely recognized for its ability to colonize and establish in diverse tropical ecosystems.
Michelle Torres Dumith +1 more
wiley +1 more source
Checklist of catfishes, recent and fossil (Osteichthyes: Siluriformes), and catalogue of siluriform primary types [PDF]
Zootaxa, 2007 A checklist of Recent and fossil catfishes (Order Siluriformes) is presented, summarizing taxonomic literature published through 2005. From 4624 nominal species group names and 810 genus group names, 3093 species are recognized as valid, and are distributed among 478 genera and 36 families.
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Redescription of Hypoptopoma inexspectata (Holmberg, 1883), with notes on its anatomy (Siluriformes: Loricariidae). [PDF]
, 2001 Hypoptopoma inexspectata is diagnosed and redescribed based on the examination of additional material and comparison with its congeners. This poorly known hypoptopomine species is distributed in the Paraguay and Paraná river draínages.
Aquino, Adriana E. +1 more
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Journal of Fish Biology, EarlyView.Abstract Two new species of whiptail catfish, Loricaria (Siluriformes: Loricariidae), were discovered in the Munim and Itapecuru river basins, Maranhão State, northeastern Brazil, through an integrative taxonomic approach combining morphology and mitochondrial DNA.
Ananda. C. Serejo‐Saraiva +4 more
wiley +1 more source
Cytogenetic analysis of five Hypostomus species (Siluriformes, Loricariidae) [PDF]
Genetics and Molecular Biology, 2011 In this work, we analyzed the karyotypes of five Hypostomus species. Hypostomus cf. heraldoi, from the Mogi-Guaçu River, had 2n = 72 chromosomes, with a nucleolar organizer region (NOR) in one chromosomal pair. Hypostomus regani, from the Mogi-Guaçu River had 2n = 72 chromosomes with NORs in two chromosomal pairs.
Martinez, Emanuel Ricardo Monteiro +3 more
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Bony fish genomes: Status and gaps
Journal of Fish Biology, EarlyView.Abstract Bony fish constitute an exceptionally species‐rich group of aquatic vertebrates, comprising more than 95% of all living fish. The adaptive processes on the diversity of environments they inhabit make them a highly diverse group from taxonomic, morphological and evolutionary standpoints.
Noelia Pérez‐Pereira +3 more
wiley +1 more source