A quantitative ethnozoological assessment of traditionally used animal-based therapies in the tropical island of Mauritius

There is currently a dearth of documentation on the use of animal-based therapies (ABT) in Mauritius. This study was therefore designed to gather primary folk knowledge on the different ABT used by Mauritians. Failure to document such knowledge can results in losses in both the use of such remedies and in the scientific documentation of the cultural traditions of animals used in the treatment and/or management of human diseases. The aim of the study is to collect, analyze, document and disseminate ABT from the tropical island of Mauritius used against common human ailments.Data was collected following interviews from key informants (n=126) and reported diseases and health complications were classified in 14 categories. Eight quantitative indexes such as informant consensus factor (FIC), fidelity level (FL), relative frequency of citation (RFC), relative importance (RI), cultural importance index (CII), index of agreement on remedies (IAR), cultural agreement index (CAI) and ethnofaunistic index (EFI) were used to analyze the reported animal species.A total of 31 animal species belonging to 12 taxonomic groups were documented to be used in traditional medicine by Mauritians. ABT were prepared from whole animals or their body parts or products extracted from them such as: butter, meat, milk, bones, horn, musk, skin, fin, honey, mucus, eggs and legs. The most encountered taxonomic group was Actinopterygii (7 species). According to EFI, 3.34% of the indigenous fauna in Mauritius were used in the treatment and/or management of different ailments. The highest FIC value (0.98) was cited for endocrine, nutritional and metabolic disorders which included diabetes and gangrene. Rattus rattus scored the highest FL (100%) for the ailment category injury and poisons of external cause; Bos taurus had the highest RI value (2.00) due to its versatility, had the highest frequency of citation (RFC=0.49), the highest cultural importance (CII=0.84) and the highest CAI value (0.77). According to IAR, Salmo salar (IAR=1.00) had the highest agreement among the informants for being used for the same medicinal purpose. Furthermore, no side effects have been reported from the use of ABT.Our study revealed that Mauritians possesses valuable knowledge on a plethora of ABT. It is believed that the present documentation will serve to record this vanishing knowledge before it is eroded completely from the island and to the scientific community. It is also anticipated that the present documentation will be fundamental to protect traditional knowledge, for the conservation and sustainable use of the rich biodiversity of Mauritius for future generations and to ensure Mauritius׳s sovereign rights over its genetic resources and utilization by first documenting them. In addition, further experimental investigations are required to elucidate the pharmacological properties of the reported medicinal fauna of Mauritius