|
|
|
|
| |
|
|
| Gomes,Ana Lucia Silva; Costa,Jesaías Ismael da; Benetton,Maria Linda Flora de Novaes; Bernardino,Geraldo; Belem-Costa,Andrea. |
| ABSTRACT: The dinoflagellate Piscinoodinium pillulare is a parasite with low parasitic specificity and unspecific geographical distribution. This research reported a simple and practical method - the principle of spontaneous sedimentation - to identify the presence of P. pillulare during massive infestations which does not require using precision equipment. Agitation in water of the gill arches of infested fish will elicit, after a period of rest, recording the accumulation of trophonts in the bottom of flasks. The method was applied during outbreaks of P. pillulare in tambaqui, Colossoma macropomum and matrinxã, Brycon amazonicus, in fish farms of the Amazon region and proved to be effective. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fish parasite; Dinoflagellate; Piscinoodiniasis. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000700501 |
| |
|
|
| Moreira,Renata Guimarães; Mimura,Olga Martins; Lima,Rossana L.V. Andrade; Bernardino,Geraldo. |
| Body fluid ionic content of fishes varies with ambient. Variations in the plasmatic ionic concentration have also been related with sex or maturation cycle, once that reproduction modifies metabolic processes. In fishes, the gallbladder is an important osmoregulatory organ. So, the present work has been focused on the relation of plasmatic and biliar electrolytes with sex and maturation cycle, of the teleost fish Prochilodus scrofa at the resting and mature stages of gonadal cycle. The animals (28 males and 30 females) were collected at Cachoeira de Emas (Pirassununga, São Paulo) and they were fasted for three days before the experiments. Deteminations of Na+, K+, Mg++, and Ca++ were made by spectophotometry and Cl- by microtitulation. Comparisons of ionic... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Osteichthyes; Characiformes; Prochilodus scrofa; Bile; Plasma; Ionic content. |
| Ano: 1998 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751998000100019 |
| |
|
|
|
