Detection of the elusive Dwarf sperm whale (Kogia sima) using environmental DNA at Malpelo island (Eastern Pacific, Colombia) - Université de Montpellier Accéder directement au contenu
Article Dans Une Revue Ecology and Evolution Année : 2021

Detection of the elusive Dwarf sperm whale (Kogia sima) using environmental DNA at Malpelo island (Eastern Pacific, Colombia)

Andrea Polanco Fernandez
  • Fonction : Auteur
Giomar H. Borrero-Perez
  • Fonction : Auteur
Maria Mutis Martinezguerra
  • Fonction : Auteur
Alice Valentini
Tom B. Letessier
  • Fonction : Auteur
Florine Hadjadj
  • Fonction : Auteur
Sandra Bessudo
  • Fonction : Auteur
Felipe Ladino
  • Fonction : Auteur

Résumé

Monitoring large marine mammals is challenging due to their low abundances in general, an ability to move over large distances and wide geographical range sizes. The distribution of the pygmy (Kogia breviceps) and dwarf (Kogia sima) sperm whales is informed by relatively rare sightings, which does not permit accurate estimates of their distribution ranges. Hence, their conservation status has long remained Data Deficient (DD) in the Red list of the International Union for Conservation of Nature (IUCN), which prevent appropriate conservation measures. Environmental DNA (eDNA) metabarcoding uses DNA traces left by organisms in their environments to detect the presence of targeted taxon, and is here proved to be useful to increase our knowledge on the distribution of rare but emblematic megafauna. Retrieving eDNA from filtered surface water provides the first detection of the Dwarf sperm whale (Kogia sima) around the remote Malpelo island (Colombia). Environmental DNA collected during oceanic missions can generate better knowledge on rare but emblematic animals even in regions that are generally well sampled for other taxa.
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hal-03413614 , version 1 (17-12-2021)

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Jean-Baptiste Juhel, Virginie Marques, Andrea Polanco Fernandez, Giomar H. Borrero-Perez, Maria Mutis Martinezguerra, et al.. Detection of the elusive Dwarf sperm whale (Kogia sima) using environmental DNA at Malpelo island (Eastern Pacific, Colombia). Ecology and Evolution, 2021, ⟨10.1002/ece3.7057⟩. ⟨hal-03413614⟩
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