Results 11 to 20 of about 2,997 (135)
Biota Colombiana, 2017 La fecundidad relativa en peces es la estimación de la cantidad de ovocitos de una hembra por desove. Este aspecto se investigó en especímenes topotipos de Grundulus quitoensis de la laguna altoandina El Voladero, Ecuador.
Jonathan Valdiviezo-Rivera +3 more
doaj +5 more sources
Neuroanatomical diversity in Teleocichla with new volumetric and histological insights into the encephalon of Teleocichla monogramma Kullander 1988. [PDF]
Anat Rec (Hoboken)Abstract Teleocichla comprises small cichlids that inhabit the rapid streams of Amazonian rivers; however, there has been limited research on their encephalon morphology. This study examined the neuroanatomy of four species, focusing on volumetric measurements of their encephalon subregions, and providing a histological description of the encephalon of
Leão-Reis R +4 more
europepmc +2 more sources
Effects of Glyphosate on the Planktonic Microbiota: An Experimental Approach. [PDF]
Environ ToxicolABSTRACT Glyphosate is one of the most widely used herbicides in the world, including in Brazil, and its dispersion through habitats and surface waters can impact entire aquatic ecosystems. However, experimental studies evaluating the effects of pesticides on whole planktonic communities, considering attributes such as richness, density and composition—
Progênio M +7 more
europepmc +2 more sources
La pesca comercial y el estudio de la fauna marina en la Argentina, 1890-1930
História, Ciências, Saúde: Manguinhos, 2014 Este trabajo examina la relación entre el desarrollo de la pesca comercial marítima y el estudio de la fauna marina en la Argentina de fines del siglo XIX y las primeras décadas del siglo XX.
Susana V. Garcia
doaj +1 more source
Revista Peruana de Biología, 2017 Thorichthys panchovillai, new species, is described, from distinctive of the tributaries of the River Coatzacoalcos basin, Mexico. The new species is diagnosed by a set of characters: dorsal fin rays XVI, 8 – 9; anal fin rays VII, 6 – 7; pectoral fin ...
Luis Fernando Del Moral-Flores +2 more
doaj +1 more source
Cryptic diversity and recent diversification in the Pyrrhulina australis species complex (Characiformes, Lebiasinidae) revealed by mitochondrial DNA. [PDF]
J Fish BiolAbstract Pyrrhulina australis Eigenmann & Kennedy, 1903, is widely distributed across the main hydrographic basins of South America. The taxonomic integrity of this species is nevertheless challenged by the lack of clear diagnostic characters, its marked geographic variation and the morphological overlap with its congeners. In this context, the present
Souza TB +6 more
europepmc +2 more sources
Global Ecology and Conservation, 2023 The peace process in Colombia allowed biodiversity experts to visit unexplored regions in the tropical Andes mountains. The diversity of fish species and characteristics of the aquatic environments (creeks, streams, and river channels) in which they live
Daniel Restrepo-Santamaria +5 more
doaj +1 more source
Inventario rápido de la ictiofauna en la cuenca del Bajo Pachitea, Perú
Revista Peruana de Biología, 2013 El presente trabajo informa sobre la diversidad de peces en la Cuenca del Bajo Pachitea. En julio de 2005 un inventario rápido en 31 estaciones (14 ríos, 13 quebradas y 4 lagunas) fue realizado.
Vanessa E. Palacios +2 more
doaj +1 more source
Estudio preliminar de ictioplancton de la Amazonia peruana con énfasis en la familia Pimelodidae
Revista Peruana de Biología, 2013 En el presente trabajo se informa y describen las larvas de peces presentes en la naciente del río Madre de Dios, con énfasis en la familia Pimelodidae. Las colectas se realizaron entre noviembre y diciembre de 2004, utilizando una red de ictioplancton
María Rojas +3 more
doaj +1 more source
Acta Zoológica Lilloana, 2023 El gobio Shimofuri (Tridentiger bifasciatus) es originario de la costa noroeste del Pacífico de Asia. Este pez fue registrado como especie exótica en 1985 en California, EE.
Sergio Bogan
doaj +1 more source