To cite bycatch in publications use:

  Ward E, Jannot J (????). _bycatch: Estimation and expanded bycatch
  estimation using Bayesian models_. R package version 1.0.7,
  <https://github.com/ericward-noaa/bycatch>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {{bycatch}: Estimation and expanded bycatch estimation using Bayesian models},
    author = {Eric J. Ward and Jason. E. Jannot},
    note = {R package version 1.0.7},
    url = {https://github.com/ericward-noaa/bycatch},
  }