Monitoramento da Qualidade da Água de Criação de Peixes Ornamentais

2021 ◽  
Author(s):  
LÁZARO HENRIQUE PEREIRA ◽  
RAYLLA FERREIRA DE OLIVEIRA ◽  
LúCIO FRANKLIN DA NóBREGA SOUSA ◽  
JOSé ROBéRIO FERREIRA MENEZES
Keyword(s):  
Carassius Auratus ◽  
Pterophyllum Scalare

A piscicultura ornamental tem crescido bastante em muitos países e por conta do seu alto desenvolvimento houve a necessidade de garantir melhores condições na criação de peixes, pois há diversos fatores que são imprescindíveis para manutenção adequada da vida aquática. Com o objetivo de avaliar a qualidade da água de aquários domésticos, foram realizadas análises físico-químicas em três aquários com diferentes capacidades de armazenamento, que continham peixes das espécies: Carassius auratus e Pterophyllum scalare, através dos métodos: Potenciométrico para a determinação do pH, Nefelométrico para a turbidez, Espectrofotométrico - diazotação sulfanilamida para a concentração de nitrito, Espectrofotométrico - salicilato de sódio para o nitrato, Titulométrico / 4500 - C e Espectrofotométrico para amônia, Titulométrico - Complexação com EDTA - 2340 - C para a dureza total e dureza de cálcio e modificação da Azida referente a concentração de oxigênio dissolvido. Foi possível constatar que as concentrações de nitrito e nitrato estavam acima dos valores ideais e a elevada dureza presente no aquário de 30 litros é prejudicial aos peixes da espécie Pterophyllum scalare. Portanto, concluiu-se que é necessário a utilização de diversos parâmetros para caracterizar um ambiente biologicamente adequado, assim como o uso de filtros biológicos e oxigenação artificial para garantir uma melhor qualidade da água para criação peixes ornamentais. ,

scholarly journals Isolation of Tetrahymena pyriformis From Several Infected Pet Fish Species And a Regime For Its Treatment

2005 ◽  
Vol 29 (1) ◽  
pp. 190-195
Author(s):  
Omar Bassim Ahmed Al- Tayyar
Keyword(s):  
Methylene Blue ◽  
Water Temperature ◽  
Carassius Auratus ◽  
Poecilia Reticulata ◽  
Tetrahymena Pyriformis ◽  
Infected Fish ◽  
Mucus Hypersecretion ◽  
Goldfish Carassius Auratus ◽  
Poecilia Sphenops ◽  
Pterophyllum Scalare

Tetrahymena pyriformis has been firstly isolated from brood Goldfish(Carassius auratus) Common, Fantail, Ryukin, Veiltail and Moor, Black molly(Poecilia sphenops), Gourami (Trichogaster trichopterus), red Swordtail(Xiphophorus helleri), Guppy (Poecilia reticulata), deep Angelfish(Pterophyllum scalare) and brood Algae eater (Hypostomus plecostomus) inIraq. The infected fish suffered from mucus hypersecretion large hyperemicareas on the skin, and slight shedding of the scales. The incidence percentage ofinfection was 100 %. Rising water temperature was up to 29 – 30cْ for one timeand methylene blue was at a concentration of 5 ppm for 24 hours. Sodiumchloride at a concentration of 2 % for one minute and two minutes has noobvious effect on Tetrahymena pyriformis. Treatment with NaCl at theconcentration of 1% for 20 minutes for three consecutive days achieved the bestresults.

How do body and paired-fin positions affect the ability of three teleost fishes to maneuver around bends?

1999 ◽  
Vol 77 (2) ◽  
pp. 203-210 ◽  
Author(s):  
Amy J Schrank ◽  
Paul W Webb ◽  
Sarah Mayberry
Keyword(s):  
Carassius Auratus ◽  
Teleost Fishes ◽  
Body Depth ◽  
Minimum Width ◽  
Pectoral Fins ◽  
Confined Spaces ◽  
Goldfish Carassius Auratus ◽  
Pterophyllum Scalare ◽  
Deep Body ◽  
Silver Dollar

Deep-bodied fishes with an acanthopterygian fin distribution are traditionally considered more maneuverable than fishes with a fusiform body and less derived fin positions. One measure of fish maneuverability is the ability to make yawing turns. Goldfish (Carassius auratus), silver dollars (Metynnis hypsauchen), and angelfish (Pterophyllum scalare) were induced to swim through narrow tubes bent at angles of 0°, 45°, 90°, 135°, and 180°. These three species represent a range of body form and fin position from goldfish (fusiform body and less derived ventral placement of the paired fins) through silver dollar (deep body and the same fin positions as goldfish) to the acanthopterygian angelfish (deep body and lateral pectoral fins). The minimum width of tubes through which the fish could pass a bend increased with angle for all species and among species in the order goldfish < silver dollar < angelfish. Goldfish were consistently faster than angelfish, reflecting the routine use of body and caudal fin swimming, while angelfish routinely used median- and paired-fin swimming. Greater body depth and anterolateral pectoral fin positions were not associated with greater maneuverability. Goldfish were most adept at making yawing turns in confined spaces and in such circumstances were most maneuverable.

SEM of Hepatocytes and Biliary Passages in Goldfish Liver

1977 ◽  
Vol 35 ◽  
pp. 556-557
Author(s):  
Waykin Nopanitaya ◽  
Joe W. Grisham ◽  
Johnny L. Carson
Keyword(s):  
Carassius Auratus ◽  
Cell Layer ◽  
Three Dimensional ◽  
Cell Types ◽  
Biliary System ◽  
Fish Food ◽  
Commercial Fish ◽  
Goldfish Carassius Auratus ◽  
Commercial Fish Food

An interesting feature of the goldfish liver is the morphology of the hepatic plate, which is always formed by a two-cell layer of hepatocytes. Hepatic plates of the goldfish liver contain an infrequently seen second type of cell, in the centers of plates between two hepatocytes. A TEH study by Yamamoto (1) demonstrated ultrastructural differences between hepatocytes and centrally located cells in hepatic plates; the latter were classified as ductule cells of the biliary system. None of the previous studies clearly showed a three-dimensional organization of the two cell types described. In the present investigation we utilize SEM to elucidate the arrangement of hepatocytes and bile ductular cells in intralobular plates of goldfish liver.Livers from young goldfish (Carassius auratus), about 6-10 cm, fed commercial fish food were used for this study. Hepatic samples were fixed in 4% buffered paraformaldehyde, cut into pieces, fractured, osmicated, CPD, mounted Au-Pd coated, and viewed by SEM at 17-20 kV. Our observations were confined to the ultrastructure of biliary passages within intralobular plates, ductule cells, and hepatocytes.

Induction of Gynogenesis and Androgenesis in Goldfish Carassius auratus (var. oranda)

2001 ◽  
Vol 36 (3-4) ◽  
pp. 195-198 ◽  
Author(s):  
I Paschos ◽  
L Natsis ◽  
C Nathanailides ◽  
I Kagalou ◽  
E Kolettas
Keyword(s):  
Carassius Auratus ◽  
Goldfish Carassius Auratus
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