scholarly journals THE STATE OF ICHTHYOFAUNA IN THE BAY OF THE KIEV RESERVOIR EXPLOITED UNDER THE REGIME OF THE COMMODITY FISH FARM

2014 ◽  
pp. 16-25
Author(s):  
I. Buzevich ◽  
◽  
N. Rubtsova ◽  
R. Shevchenko ◽  
P. Dolgopol ◽  
...  
Keyword(s):  
2017 ◽  
Vol 62 (1) ◽  
Author(s):  
Tiago Milanin ◽  
Stephen D. Atkinson ◽  
Márcia R.M. Silva ◽  
Roberto G. Alves ◽  
Antônio A.M. Maia ◽  
...  

AbstractThe involvement of oligochaetes in the life cycles of fresh water myxozoan parasites in Brazil was investigated. Of 333 oligochaetes collected in a fish farm in the State of São Paulo, three (0.9%) released Aurantiactinomyxon type spores. From 86 worms collected in a fish farm in Mato Grosso do Sul State, 1 (0.9%) released actinospores with a novel morphology for which we propose the name Seisactinomyxon. Infected oligochaetes were identified by morphology: all belonged to family Naididae, with


2018 ◽  
Vol 26 (2) ◽  
pp. 205-208
Author(s):  
Jeffson Nobre PEREIRA ◽  
Germán Augusto Murrieta MOREY ◽  
José Celso de Oliveira MALTA

Branchiurans are parasites from the buccal cavity, gills, skin, and fins of various fish species. The Neotropical region has one of the highest diversity of branchiurans. On Arapaima gigas, only four species of branchiurans have been reported. The present study improves the knowledge on host and geographical range of Dolops striata. Fish were collected from a fish farm in the State of Pará, Brazil. All A. gigas were parasitized by Dolops striata, which were collected from the fins and body surface. This is the first record of D. striata in A. gigas. The high prevalence detected warns the possibility of an increase in the number of D. striata infesting A. gigas, which may cause some problems for fish-farmers.


2013 ◽  
Vol 84 (2) ◽  
pp. 637-649 ◽  
Author(s):  
Ma. Teresa Vega-Ramírez ◽  
Martha C. Moreno-Lafont ◽  
Ricardo Valenzuela ◽  
Roberto Cervantes-Olivares ◽  
J. Miguel Aller-Gancedo ◽  
...  

Author(s):  
T. A. Welton

Various authors have emphasized the spatial information resident in an electron micrograph taken with adequately coherent radiation. In view of the completion of at least one such instrument, this opportunity is taken to summarize the state of the art of processing such micrographs. We use the usual symbols for the aberration coefficients, and supplement these with £ and 6 for the transverse coherence length and the fractional energy spread respectively. He also assume a weak, biologically interesting sample, with principal interest lying in the molecular skeleton remaining after obvious hydrogen loss and other radiation damage has occurred.


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