Hi George, 

I’m not familiar with the method in that paper, but I know that "a Tweedie 
distribution is equivalent to the distribution obtained by summing a Poisson 
number of gamma random variables" (Foster & Bravington 2013) and there are a 
few methods available in R for estimating the Tweedie distribution (i.e. 
compound Poisson–gamma distribution). 

…but is the measurement for each reproductive event really continuous, e.g 
something like total clutch weight or volume?

cheers,
Mollie
   


> On 11Oct 2018, at 15:49, Glen,George <george.g...@ufl.edu> wrote:
> 
> Hi all,
> 
> I found this paper online 
> (https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4226152), which discusses a 
> method to model the sum of continuous random variables over a number of 
> events where the number of events is also a random variable. I was wondering 
> if anyone knew of specific examples using this approach to model reproductive 
> events in animal populations? Or if a robust modeling framework in R has been 
> constructed?
> 
> “What is best in mathematics deserves not merely to be learnt as a task, but 
> to be assimilated as a part of daily thought, and brought again and again 
> before the mind with ever-renewed encouragement.” Bertrand Russell
> 
> Graduate Assistant (PhD)
> Archie Carr Center for Sea Turtle Research
> Department of Biology
> University of Florida
> 
> Tel: (+1) 352-282-5616         Website: http://accstr.ufl.edu/
> Skype: geoglen12                  Email: 
> george.g...@ufl.edu<mailto:george.g...@ufl.edu>
> 
> 
> 
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