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Residency and diel movement patterns of the endangered scalloped hammerhead Sphyrna lewini in the Revillagigedo National Park
Author(s) -
AldanaMoreno Alejandro,
HoyosPadilla E. Mauricio,
GonzálezArmas Rogelio,
GalvánMagaña Felipe,
Hearn Alex,
Klimley A. Peter,
Winram William,
BecerrilGarcía Edgar Eduardo,
Ketchum James T.
Publication year - 2020
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/jfb.14239
Subject(s) - diel vertical migration , endangered species , fishery , pelagic zone , biology , national park , oceanography , ecology , geology , habitat
This study is the first description of the residency and diel movements of Sphyrna lewini at the Revillagigedo National Park, Mexico. Eleven adult scalloped hammerheads of total length 200–300 cm were monitored using acoustic telemetry during 2013–2015 at four sites at San Benedicto Island. Diel and residency patterns were described based on 58,055 detections by four autonomous receivers. The sharks displayed high daytime residency in two of the four sites, with movements away into the pelagic environment at night. This study generates a baseline for effective monitoring to improve the conservation and management of an iconic but endangered species at this marine reserve.