An estimate of the number of white sharks interacting with ecotourism in Guadalupe Island

Written By Karina Busto
Pectoral_Depression_White_Sharks_Guadalupe_Island_.jpg

An estimate of the number of white sharks Carcharodon carcharias interacting with ecotourism in Guadalupe Island

Edgar Eduardo Becerril-García, Edgar Mauricio Hoyos-Padilla, Omar Santana-Morales, Miguel A. Gutiérrez-Ortiz, Arturo Ayala-Bocos, Felipe Galván-Magaña

Journal of Fish Biology (2020)

DOI: https://doi.org/10.1111/jfb.14540

Abstract

The aim of the present study is to provide an estimate of the number of white sharks Carcharodon carcharias that seasonally interact with ecotourism boats in Guadalupe Island using Schnabel's mark–recapture method and 6316 records of white sharks during 2012–2014. The results of the estimation highlight an abundance of 78 white sharks 95% C.I. (62.1, 105.6) interacting with ecotourism. The regulations regarding the number of tourists, boats and the monitoring of white sharks should be assessed to improve management decisions regarding the conservation and sustainable use of this threatened species.

Keywords: Abundance estimation, conservation, ecotourism, sustainable management, vulnerable species


Karina Busto
Previous

Habitat suitability of Rhincodon typus in three localities of the Gulf of California
Next

Ontogenetic differences in muscle fatty acid profile of white sharks