Abstract
Since viruses are able to influence the trophic status and community structure they should be accessed and accounted in ecosystem functioning and management models. So, this work met a set of biological, chemical and physical time series in order to explore the correlations with marine virioplankton community across different trophic gradients. The case studied is the Arraial do Cabo upwelling system, northeast of Rio de Janeiro State in Southeast coast of Brazil. The main goal is to evolve three type of artificial neural network (ANN) by genetic algorithm (GA) optimization to predict virioplankton abundance and dynamic. The input variables range from the abundance of phytoplankton, bacterioplankton and its ratios acquired by one in situ and another ex situ flow cytometers. These data were collected with weekly frequency from August 2006 to June 2007. Our results show viruses being highly correlated to their host, and that GA provided an efficient method of optimizing ANN architectures to predict the virioplankton abundance. The RBF-NN model presented the best performance to an accuracy of 97% for any period in the year. A discussion and ecological interpretations about the system behavior is also provided.
Highlights
Nowadays, viruses are considered ubiquitous, active and ecologically important members of microbial communities influencing biogeochemical cycles, community composition and horizontal gene transfer [1,2,3]
Our results show viruses being highly correlated to their host, and that genetic algorithm (GA) provided an efficient method of optimizing artificial neural network (ANN) architectures to predict the virioplankton abundance
A temperate phage genome is integrated into the host chromosome where it is carried in a dormant form for several generations until induction of the lytic cycle, which happens due to environmental factors
Summary
Viruses are considered ubiquitous, active and ecologically important members of microbial communities influencing biogeochemical cycles, community composition and horizontal gene transfer [1,2,3]. In the lytic cycle for instance, the phage genome replicates immediately after infection and release progeny during lysis of the host cell. A temperate phage genome is integrated into the host chromosome where it is carried in a dormant form (prophage) for several generations until induction of the lytic cycle, which happens due to environmental factors. In nature, both cycles happen simultaneously [27,28], turning infection and viral production a nonlinear process and its distribution strongly reflects in hosts [29]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of Intelligent Learning Systems and Applications
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
