New nesting site for the expanding green, olive ridley and hawksbill turtle populations in Cabo Verde
2024
Martins, S. | Patino-Martínez, Juan | Fairweather, K. | Medinaa, María | Liria-Loza, A. | Jesús, A. | Veiga, J. da | Taxonera, A. | Monteiro, I. | Marco, Adolfo
Currently, some sea turtle populations are expanding their home range distribution toward higher latitudes at an unprecedented rate. These expansions are associated to factors such as climate change or and increased conservation efforts. Already home to one of the largest loggerhead turtle (Caretta caretta) rookeries in the world, the islands of Cabo Verde Archipelago have recorded sporadic nesting of green (Chelonia mydas), olive ridley (Lepidochelys olivacea) and hawksbill (Eretmochelys imbricata) turtles in recent years. Here, we present the compiled information on these sporadic nesting events that occurred between 2013 and 2022 and discuss possible causes for their occurrence. Throughout the study period, the green turtle was documented on 20 occasions, the olive ridley on 25 occasions and the hawksbill on three occasions. All nesting females were found untagged and were subsequently tagged. Nesting activities occurred on the islands of Santo Antão, Sal, Boa Vista and Maio, most of them within the Sea Turtle Natural Reserve in Boa Vista Island. We suggest introducing new conservation strategies targeting the green, olive ridley, and hawksbill turtles nesting in Cabo Verde. We further suggest the use of genetic studies to determine the population origins of these three species.
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