نتایج جستجو برای: fish pond

تعداد نتایج: 109840  

Journal: :Brazilian journal of biology = Revista brasleira de biologia 2011
G T Jerônimo G M Speck M M Cechinel E L T Gonçalves M L Martins

A total of 240 Nile tilapia were examined between April 2007 and March 2008, gathered from three different fish farms, 20 fish in each fish farm, in the four seasons of the year. Fish ponds were located in Joinville, Blumenau and Ituporanga, Santa Catarina state, Brazil and each pond had a different culture system. Prevalence, mean intensity, mean abundance and mean relative dominance were comp...

Journal: :International Journal of Systematic and Evolutionary Microbiology 2016

Journal: :IOP Conference Series: Materials Science and Engineering 2021

Journal: :INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY 2009

Journal: :Journal of Mechanical Engineering Research and Developments 2018

2015
Alexandra C. North David J. Hodgson Stephen J. Price Amber G. F. Griffiths Jacob Lawrence Kerby

Ranaviruses are causing mass amphibian die-offs in North America, Europe and Asia, and have been implicated in the decline of common frog (Rana temporaria) populations in the UK. Despite this, we have very little understanding of the environmental drivers of disease occurrence and prevalence. Using a long term (1992-2000) dataset of public reports of amphibian mortalities, we assess a set of po...

2001

Due to the increasing use of artificial aerators in fish ponds, and to the lack of studies on this subject, this work studied some of the aspects associated with their use. The influence of a diffuser type aerator (AR 120) on the biotic and abiotic variables was evaluated in a fish pond. Three points of the pond were marked for the taking of samples: 5, 10 and 23 m from the aerator. Samples wer...

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