Effects of Smart Position Only (SPOT) Tag Deployment on White Sharks Carcharodon carcharias in South Africa

Oliver J. D. Jewell, Michelle A. Wcisel, Enrico Gennari, Alison V. Towner, Marthan N. Bester, Ryan L. Johnson, Sarika Singh

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)

Abstract

We present 15 individual cases of sub-adult white sharks that were SPOT tagged in South Africa from 2003-2004 and have been re-sighted as recently as 2011. Our observations suggest SPOT tags can cause permanent cosmetic and structural damage to white shark dorsal fins depending on the duration of tag attachment. SPOT tags that detached within 12-24 months did not cause long term damage to the dorsal fin other than pigmentation scarring. Within 12 months of deployment, tag fouling can occur. After 24 months of deployment permanent damage to the dorsal fin occurred. A shark survived this prolonged attachment and there seems little compromise on the animal's long term survival and resultant body growth. This is the first investigation detailing the long term effects of SPOT deployment on the dorsal fin of white sharks.

Original languageEnglish
Article number27242
Number of pages4
JournalPLoS One
Volume6
Issue number11
DOIs
Publication statusPublished - 14 Nov 2011
Externally publishedYes

Fingerprint

Dive into the research topics of 'Effects of Smart Position Only (SPOT) Tag Deployment on White Sharks Carcharodon carcharias in South Africa'. Together they form a unique fingerprint.

Cite this