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Sexual maturity in western Atlantic bluefin tuna.


ABSTRACT: We introduce a novel endocrine approach for assessing the unresolved matter of the timing of sexual maturation in western Atlantic bluefin tuna (ABFT), a highly migratory population whose status remains uncertain. Ratios of follicle stimulating hormone to luteinizing hormone, a sexual maturity indicator, in all ABFT ? 134 cm curved fork length (CFL) were <0.4, similar to Mediterranean spawners, indicating that western ABFT mature at considerably smaller sizes and at a much younger age than currently assumed (? 185 cm CFL).

SUBMITTER: Heinisch G 

PROVIDER: S-EPMC5384251 | biostudies-literature | 2014 Nov

REPOSITORIES: biostudies-literature

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Sexual maturity in western Atlantic bluefin tuna.

Heinisch Gilad G   Rosenfeld Hanna H   Knapp Jessica M JM   Gordin Hillel H   Lutcavage Molly E ME  

Scientific reports 20141128


We introduce a novel endocrine approach for assessing the unresolved matter of the timing of sexual maturation in western Atlantic bluefin tuna (ABFT), a highly migratory population whose status remains uncertain. Ratios of follicle stimulating hormone to luteinizing hormone, a sexual maturity indicator, in all ABFT ≥ 134 cm curved fork length (CFL) were <0.4, similar to Mediterranean spawners, indicating that western ABFT mature at considerably smaller sizes and at a much younger age than curre  ...[more]

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