Estimates of roadkill rates varied greatly across species (median=0.05
ind./km/year, SD=5.89 ind./km/year), with several taxa, particularly
birds and reptiles, estimated to suffer high mortality rates in
Galápagos and Napo (Table 2; Appendix 1). Although most roadkilled
species were categorized as Least Concern by the IUCN Red List (IUCN,
2022), six species were found in a category of conservation concern, and
two as Data Deficient (Table 3). While roadkill rates for these
threatened species are not very high, due to their vulnerability, road
mortality could pose a threat to their persistence. Although the tapeti
(Sylvilagus brasiliensis ), considered as Endangered, was reported
in four studies with a median roadkill rate of 0.028 ind./km/year
(range=0.008-0.79), it is possible that these records correspond to
other Sylvilagus species, as the IUCN restricts the distribution
of S. brasiliensis to Pernambuco-Brazil (IUCN, 2022).
Table 2 . Top ten most roadkilled wildlife in Ecuador as
reported in systematic surveys. We report taxonomic information (class,
order and species name), IUCN Red List status, the number of studies in
which that species was recorded, the estimated standardized roadkill
rate (if a species was detected in more than one study, we report its
highest rate), and the province for the reported roadkill rate.