Results 1 to 10 of about 670 (178)
Confocal Identification of Immune Molecules in Skin Club Cells of Zebrafish (Danio rerio, Hamilton 1882) and Their Possible Role in Immunity [PDF]
Biology, 2022 The immune system of a fish has cellular and molecular defense mechanisms that are substantially retained throughout the evolution of vertebrates. The innate immune system provides biological processes, such as phagocytosis and mechanical barriers, to ...
Alessio Alesci +11 more
doaj +2 more sources
Early Biogeography of Otophysi Points to the Neotropics as the Cradle of Characiphysan Fishes. [PDF]
Ecol EvolOtophysan 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 +9 more
europepmc +2 more sources
Acta Amazonica, 2005 No presente trabalho é feito um levantamento dos casos de dimorfismo sexual em Siluriformes e Gymnotiformes. Este levantamento se restringe às formas Neotropicais, com ênfase mais especificamente, às da Amazônia.
Lúcia H. Rapp Py-Daniel +1 more
doaj +3 more sources
Caldasia, 2023 Chanos chanos es un pez óseo marino y estuarino, distribuido en las porciones tropicales de los océanos Índico y Pacífico. En noviembre de 2021 fue pescado un ejemplar de esta especie de unos 85 cm de longitud horquilla en la costa caribeña frente a San ...
Arturo Acero P. +2 more
doaj +1 more source
Oceanological and Hydrobiological Studies, 2023 The anatomy, growth, and differentiation of the dorsal fin spines of three catfish species collected from the Nile River and Lake Nasser. Egyptian waters are described, and terminology is suggested for their parts.
Farrag Mahmoud M. S. +2 more
doaj +1 more source
Morphology of the epidermis of the neotropical catfish Pimelodella lateristriga (Lichtenstein, 1823) with emphasis in club cells. [PDF]
PLoS ONE, 2012 The epidermis of Ostariophysi fish is composed of 4 main cell types: epidermal cells (or filament containing cells), mucous cells, granular cells and club cells. The morphological analysis of the epidermis of the catfish Pimelodella lateristriga revealed
Eduardo Medeiros Damasceno +4 more
doaj +1 more source
Heterogeneidade de hemoglobina nos peixes da Amazonia [PDF]
Acta Amazonica, 1978 Resumo Os padrões eletroforáticos de hemoglobinas de peixes da Amazônia foram descritos. Os peixes incluíram a pirambóia sul-americana, Lepidosiren paradoxa, quatro espécies de raias de água doce do género Potamotrygon e teleósteos sctinopterígeos de 77 ...
Unni E. H. Fyhn +5 more
doaj +1 more source
Zygoparity in Characidae - the first case of internal fertilization in the teleost cohort Otomorpha [PDF]
Neotropical Ichthyology, 2020 Most teleosts are externally fertilizing, with internal fertilization occurring as a relatively rare event. Until now, Euteleosteomorpha is the only teleost cohort known to undergo internal fertilization.
Clayton Kunio Fukakusa +2 more
doaj +1 more source
Neotropical Ichthyology, 2023 A new miniature tridentine catfish is described from the rio Purus drainage, Amazon basin, Brazil. It differs from all other tridentines in having several unique autapomorphies: conspicuous anteromedial protuberance in the snout; set of symphyseal ...
Alessio Datovo +5 more
doaj +1 more source
Development of the dorsal and anal fin in Kneria stappersii (Otomorpha: Gonorynchiformes)
Acta Zoologica, Volume 104, Issue 3, Page 287-295, July 2023., 2023 Abstract The order Gonorynchiformes was repeatedly studied to gain new insights into the evolution of its sister‐taxon, the Otophysi, the most successful freshwater fish taxon worldwide. Previous ontogenetic studies of gonorynchiforms mainly focused on the anterior vertebral column to investigate the evolutionary origin of the Weberian apparatus ...
Ann‐Katrin Koch +2 more
wiley +1 more source