IMIS | Flanders Marine Institute
 

Flanders Marine Institute

Platform for marine research

IMIS

Publications | Institutes | Persons | Datasets | Projects | Maps
[ report an error in this record ]basket (0): add | show Printer-friendly version

Population genetic structure of protected allis shad (Alosa alosa) and twaite shad (Alosa fallax)
Jolly, M.T.; Aprahamian, M.W.; Hawkins, S.J.; Henderson, P.A.; Hillman, R.; Maoiléidigh, N.O.; Maitland, P.S.; Piper, R.; Genner, M.J. (2012). Population genetic structure of protected allis shad (Alosa alosa) and twaite shad (Alosa fallax). Mar. Biol. (Berl.) 159(3): 675-687. hdl.handle.net/10.1007/s00227-011-1845-x
In: Marine Biology. Springer: Heidelberg; Berlin. ISSN 0025-3162, more
Peer reviewed article  

Available in Authors 

Keyword
    Marine

Authors  Top 
  • Jolly, M.T.
  • Aprahamian, M.W.
  • Hawkins, S.J.
  • Henderson, P.A.
  • Hillman, R.
  • Maoiléidigh, N.O.
  • Maitland, P.S.
  • Piper, R.
  • Genner, M.J.

Abstract
    Determining the magnitude of homing behaviour within migratory fish species is essential for their conservation and management. We tested for population genetic structuring in the anadromous alosines, Alosa alosa and A. fallax fallax, to establish fidelity of stocks to spawning grounds in the United Kingdom and Ireland. Considerable genetic differences were present among populations of both species, suggesting strong fidelity to breeding grounds and compatible with homing to natal origins. Moreover, the genetic structure of A. fallax fallax showed a clear pattern of isolation-by-distance, consistent with breeding populations exchanging migrants primarily with neighbouring populations. Spatial genetic differences were on average much greater than temporal differences, indicating relatively stable genetic structure. Comparing anadromous A. fallax fallax populations to the landlocked Killarney shad subspecies, A. fallax killarnensis (Ireland), demonstrated a long history of separation. These results demonstrating regional stock structure within the British Isles will inform practical management of stocks and their spawning habitats.

All data in IMIS is subject to the VLIZ privacy policy Top | Authors