How can I italicize donut labels on a piedonut chart?

What I need is to place the "donut" labels with reference to the "Epecie" variable in italics. I have tried several methods without good results.

This is my code:

require(ggplot2)
require(moonBook)
require(webr)
library(ggpubr)

attach(datapecespv)
PieDonut(datapecespv, aes(pies = Ictiofauna, donuts = Especie), explode = 0, selected = c(1, 3), labelposition = 0, explodeDonut = T, pieLabelSize = 5, donutLabelSize = 3.6, pieAlpha = 0.8, donutAlpha = 0.9, family =  getOption("Bookman", "italic"))

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