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According to British and French shipping records, plantation records from the British colony of Trinidad and the French colony of St Domingue (present-day Haiti), it appears that the gender ratio of slaves from different regions of Africa varied greatly between 1715 and 1813. On average, there were 163 and 179 males for every 100 females across British and French shipping routes respectively; a significant drop can be observed in the average gender ratios between the shipping routes and the respective colonies. Although this was not always the case when the figures are broken down by region of origin, and the difference in the years (particularly in the British data) should not be ignored, this data does reflect the fact that male slaves had a much higher mortality rate during seasoning (i.e. adjusting to slavery and the new climate).