García-Cortés, B. (Blanca)

Kasapidis, P.

Magoulas, A.

Mejuto-García, J. (Jaime)

Valeiras, J. (Julio)

This paper presents an analysis of the genetic and growth patterns of six swordfish specimens
recaptured with traditional tags at North Atlantic, Indian and Pacific oceans. The period of
time between tagging and recapture ranged from 5 months to 5 years. This recaptured fish
together with 1148 additional samples from Atlantic, Mediterranean, Pacific and Indian stocks,
were genotyped for ten microsatellite markers and analysed using a Bayesian cluster analysis.
The results suggested the presence of three main populations, in Mediterranean, Atlantic and
Indo-Pacific Ocean. The recaptured individuals could be genetically assigned to their
population of origin. The age estimation of those specimens by interpretation of ring deposition
patterns in the second anal spine agree with expected ages by other authors with slight
differences. The examination of genetic data in combination with tagging-recapture information
may facilitate the study of aspects related to individual and stock specific growth and elucidate
the patterns of ring formation on the hard parts (spines). It would be advisable to enhance the
tag-recapture protocols of swordfish and to include the routine sampling of tissues and hard
parts in all the recaptures made by the different fleets.N

Kasapidis, Panagiotis

Valeiras, Julio

García-Cortés, Blanca

Mejuto-García, Jaime

Digital.CSIC

Genetic and growth profiles of several specimens of swordfish (Xiphias gladius) tagged and recaptured in the Atlantic, Indian and Pacific Oceans

Kasapidis, P. (Panagiotis)

Repositorio Institucional Digital del IEO

Genetic and growth profiles of several specimens of swordfish (Xiphias gladius) tagged and recaptured in the Atlantic, Indian and Pacific Oceans

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Digital.CSIC

Repositorio Institucional Digital del IEO