Misidentification of istiophorid billfishes by fisheries observers raises uncertainty over stock status

We investigated whether commercially landed black marlin Istiompax indica were being misidentified by fisheries observers operating throughout the Pacific Ocean. Of 83 samples reported by observers as I. indica, 77% were genetically identified to be blue marlin Makaira nigricans and 2% to be striped...

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Bibliographic Details
Published inJournal of fish biology Vol. 93; no. 2; pp. 415 - 419
Main Authors Williams, Samuel M., Pepperell, Julian G., Bennett, Michael, Ovenden, Jennifer R.
Format Journal Article
LanguageEnglish
Published Oxford, UK Blackwell Publishing Ltd 01.08.2018
Wiley Subscription Services, Inc
Subjects
Animals
Fish
Fisheries
Istiompax indica
Kajikia audax
Makaira nigricans
marlin
misreporting
Observers
Pacific Ocean
Perciformes - classification
Perciformes - genetics
Ratios
Stock assessment
sustainability
Uncertainty
misreporting
Makaira nigricans
Kajikia audax
Istiompax indica
sustainability
marlin
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Summary:We investigated whether commercially landed black marlin Istiompax indica were being misidentified by fisheries observers operating throughout the Pacific Ocean. Of 83 samples reported by observers as I. indica, 77% were genetically identified to be blue marlin Makaira nigricans and 2% to be striped marlin Kajikia audax. The high rate of misidentification by observers places considerable uncertainty over historic catch ratios of Indo‐Pacific marlin and stock assessments relying on the validity of these data.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:0022-1112
1095-8649
DOI:10.1111/jfb.13738