Results 21 to 30 of about 793 (179)
Joint effects of elevated copper and temperature in juvenile Tambaqui exposed in black and white waters of the Amazon. [PDF]
J Fish BiolAbstract This study aimed to investigate how exposure to elevated water temperature and metal concentration jointly affect the physiology of Amazonian fish. Aboard a research vessel in the Amazon, we evaluated the effects of water temperature (river T°C at 31.5°C and a + 4°C increase to 35.5°C) and of 3‐h copper (Cu) exposure (up to 600 μg/L) in ...
Crémazy A +6 more
europepmc +2 more sources
Dermocystidiosis induced by the parasite Dermocystidium sp. in the Paracheirodon axelrodi [PDF]
, 2018 The Rio Negro floodplain (tributary of the Amazon River) is a natural habitat of the cardinal tetra Paracheirodon axelrodi. In home aquaria, this species has high vulnerability to superficial infetions and is affected by the protist Dermocystidium ...
Andrés Laube, Pedro Fernando +5 more
core +7 more sources
Mechanisms of toxic action of copper and copper nanoparticles in two Amazon fish species: Dwarf cichlid (Apistogramma agassizii) and cardinal tetra (Paracheirodon axelrodi) [PDF]
Science of The Total Environment, 2018 Copper oxide nanoparticles (nCuO) are widely used in boat antifouling paints and are released into the environment, potentially inducing toxicity to aquatic organisms. The present study aimed to understand the effects of nCuO and dissolved copper (Cu) on two ornamental Amazon fish species: dwarf cichlid (Apistogramma agassizii) and cardinal tetra ...
Susana Braz‐Mota +5 more
openalex +5 more sources
Acta Scientiarum: Biological Sciences, 2009 Os estudos sobre a parasitofauna de peixes ornamentais cultivados são de grande relevância para o conhecimento das espécies de parasitos, permitindo interferência em sua proliferação para evitar epizootias e, consequentemente, perdas econômicas na ...
Marcos Tavares Dias +2 more
doaj +3 more sources
The pineal complex: a morphological and immunohistochemical comparison between a tropical (Paracheirodon axelrodi) and a subtropical (Aphyocharax anisitsi) characid species [PDF]
Journal of Morphology, 2016 ABSTRACTCardinal neon Paracheirodon axelrodi and bloodfin tetra Aphyocharax anisitsi are two species of characids with high trade value as ornamental fish in South America. Although both species inhabit middle water layers, cardinal neon exhibits a tropical distribution and bloodfin tetra a subtropical one.
Laura Rincón +6 more
openalex +4 more sources
Efecto del pH sobre la proporción oocitaria de Paracheirodon axelrodi, en cautiverio [PDF]
Orinoquia, 2014 Paracheirodon axelrodi es la especie de pez ornamental más comercializado y exportado en Colombia. Los individuos comercializados son extraídos del ambiente afectando las poblaciones, lo que ha llevado a realizar estudios relacionados con su biología reproductiva para el desarrollo de protocolos de reproducción en cautiverio.
Estefany Lizeth García Cruz +3 more
openalex +5 more sources
Acta Biológica Colombiana, 2022 El cardenal es el principal pez ornamental explotado en la región del Inírida. A partir de ejemplares colectados desde la actividad pesquera local, se obtuvo antecedentes de estructura talla y pesos, periodos reproductivos y longitud media de madurez ...
Milton Pedraza-Garcia +2 more
doaj +3 more sources
Revista de Biología Tropical, 2008 El pez dulceacuícola P. axelrodi es de gran importancia comercial en la Orinoquía Colombiana y a nivel mundial, pero carece de estudios acerca de su visión. Se utilizaron diez individuos, con longitud total promedio de 2.7 cm (SD= 0.2, n= 20). Se realizaron cortes a 8 μm y se tiρeron con H-E.
Mario O. Tovar +4 more
openalex +7 more sources
, 1984 This paper covers the ecological development of the major ornamental fish Paracheirodon axelrodi found in rain forest streams (almost "clear-water") in the region of the middle and upper Rio Negro.
Annibal, S., Geisler, R.
core +2 more sources