Evidence of deep genetic divergence between populations of an important recreational fishery species, Lichia amia L. 1758, around southern Africa

R. Henriques, W. M. Potts, W. H. H. Sauer, P. W. Shaw*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

33 Citations (SciVal)

Abstract

Lichia amia is an important coastal recreational fishery species with a cosmopolitan distribution in the eastern Atlantic. In southern Africa, it is distributed from southern Angola to northern KwaZulu-Natal in South Africa. A recent biological survey revealed differences between Angolan and South African individuals suggesting that they may represent separate stocks. As fishery management decisions should be based on accurate knowledge of population structure, an initial survey of the genetic substructuring of L. amia was conducted on samples collected in southern Angola and South Africa. Assessment of genetic diversity and population structure was conducted using a fragment of the mitochondrial Control Region. Obtained genetic diversity levels were within the expected range for marine teleosts (h = 0.867, pi = 0.007), and two deeply divergent (southern Angolan and South African) populations were identified (average phi(ST) = 0.78) across the Benguela Current system. These results suggest that Angolan and South African L. amia should be managed as two independent stocks. This work represents the first assessment of population genetic substructuring across the Benguela Current of a valuable coastal fishery resource, and has application for future fisheries management.

Original languageEnglish
Pages (from-to)585-591
Number of pages7
JournalAfrican Journal of Marine Science
Volume34
Issue number4
Early online date14 Dec 2012
DOIs
Publication statusPublished - 2012

Keywords

  • DIPLODUS-SARGUS
  • PHYLOGEOGRAPHY
  • SPECIATION
  • genetic diversity
  • DIVERSITY
  • leervis
  • mtDNA
  • population structure
  • MEDITERRANEAN SEA
  • MITOCHONDRIAL-DNA VARIATION
  • fisheries management
  • PLEISTOCENE CLIMATE
  • EVOLUTION
  • ATLANTIC BLUEFIN TUNA
  • MARINE

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