A Brief Exposure to Magnetic Distortions During Embryonic Development May Compromise the Migration of Loggerhead Hatchlings

Michael Salmon

doi:10.2744/CCB-1369.1

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6 June 2019 A Brief Exposure to Magnetic Distortions During Embryonic Development May Compromise the Migration of Loggerhead Hatchlings

Michael Salmon

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Chelonian Conservation and Biology, 18(1):102-104 (2019). https://doi.org/10.2744/CCB-1369.1

Abstract

In a previous study it was shown that loggerhead (Caretta caretta) eggs exposed during embryonic development to a distorted magnetic field produced hatchlings incapable of using magnetic information for orientation or navigation. My study was done to determine if hatchlings could recover from those effects when magnetic distortions were confined to shorter time periods (the first, second, or last third of embryonic development). Under those conditions, I found that orientation still failed and conclude that even a relatively short exposure to field distortions might potentially incapacitate hatchlings that use magnetic cues during offshore migration.

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Michael Salmon "A Brief Exposure to Magnetic Distortions During Embryonic Development May Compromise the Migration of Loggerhead Hatchlings," Chelonian Conservation and Biology 18(1), 102-104, (6 June 2019). https://doi.org/10.2744/CCB-1369.1

Received: 29 November 2018; Accepted: 20 February 2019; Published: 6 June 2019

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