scholarly journals Warming advances virus population dynamics in a temperate freshwater plankton community

2020 ◽  
Vol 5 (4) ◽  
pp. 295-304 ◽  
Author(s):  
Thijs Frenken ◽  
Corina P. D. Brussaard ◽  
Mandy Velthuis ◽  
Ralf Aben ◽  
Garabet Kazanjian ◽  
...  
Keyword(s):  
Population Dynamics ◽  
Plankton Community ◽  
Virus Population ◽  
Freshwater Plankton

scholarly journals Warming advances top-down control and reduces producer biomass in a freshwater plankton community

Ecosphere ◽  
2017 ◽  
Vol 8 (1) ◽  
pp. e01651 ◽  
Author(s):  
Mandy Velthuis ◽  
Lisette N. de Senerpont Domis ◽  
Thijs Frenken ◽  
Susanne Stephan ◽  
Garabet Kazanjian ◽  
...  
Keyword(s):  
Plankton Community ◽  
Top Down ◽  
Freshwater Plankton

scholarly journals Virulence and competitiveness of Cydia pomonella granulovirus mutants: parameters that do not match

2005 ◽  
Vol 86 (10) ◽  
pp. 2731-2738 ◽  
Author(s):  
Hugo M. Arends ◽  
Doreen Winstanley ◽  
Johannes A. Jehle
Keyword(s):  
Population Dynamics ◽  
Cydia Pomonella ◽  
Virus Production ◽  
Virus Population ◽  
Naturally Occurring ◽  
Direct Competition ◽  
Virus Genotypes ◽  
Occlusion Bodies ◽  
Budded Virus ◽  
Cydia Pomonella Granulovirus

The LD50, median survival time (ST50) and virus production are virulence parameters that are commonly used to describe the biological characteristics of viruses. In this study, these parameters were determined for Cydia pomonella granulovirus (CpGV-M) and two naturally occurring mutants (CpGV-MCp4 and -MCp5) that carry Tc1-like insect transposable elements. The three virus genotypes were similar in their LD50, ST50 and virus production. However, the mutant genotypes MCp4 and MCp5 were very effectively out-competed by CpGV-M in direct competition experiments, where Cydia pomonella larvae were co-infected with known ratios of occlusion bodies or budded virus of CpGV-M and one of the two mutants. It was demonstrated that MCp5 and MCp4 could not be sustained in the virus population when the progeny viruses of different co-infections were used as inocula to infect next passage larvae. These results show that the virulence parameters LD50, ST50 and virus production alone do not adequately reflect the competitiveness of the virus and are thus not suitable to describe virus population dynamics.

scholarly journals Virus population dynamics during infection

2017 ◽  
Vol 23 ◽  
pp. 82-87 ◽  
Author(s):  
Enzo Z Poirier ◽  
Marco Vignuzzi
Keyword(s):  
Population Dynamics ◽  
Virus Population

Research on the Physiological Basis of Population Dynamics in Relation to Ecotoxicology

1987 ◽  
Vol 19 (11) ◽  
pp. 21-37 ◽  
Author(s):  
S A. L. M. Kooijman ◽  
A. O. Hanstveit ◽  
N. van der Hoeven
Keyword(s):  
Population Dynamics ◽  
Simulation Studies ◽  
Nutrient Budgets ◽  
Physiological Basis ◽  
Computer Simulation Studies ◽  
Freshwater Plankton ◽  
The Relationship ◽  
Insight Into ◽  
Made In

One of the main obstacles that hampers ecotoxlcology is the poor insight into the relationship between physiological and population dynamics. The role of laboratory experiments, modeling, mathematical analysis and computer simulation studies is discussed in research aiming at this relation. Energy and nutrient budgets of organisms are found to be of vital importance. This paper evaluates the progress that has been made in concrete efforts to work out energy and nutrient budgets for simple freshwater plankton systems stressed by toxic chemicals with different modes of action.

The Impact of Eskoba®, a Glyphosate Formulation, on the Freshwater Plankton Community

2014 ◽  
Vol 86 (12) ◽  
pp. 2294-2300 ◽  
Author(s):  
U. Reno ◽  
M.F. Gutierrez ◽  
L. Regaldo ◽  
A.M. Gagneten
Keyword(s):  
Plankton Community ◽  
Glyphosate Formulation ◽  
Freshwater Plankton ◽  
The Impact
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