Temporal Variation in Population Genetic Structure of a Riverine African Cichlid Fish
2009; Oxford University Press; Volume: 101; Issue: 1 Linguagem: Inglês
10.1093/jhered/esp078
ISSN1465-7333
AutoresErika Crispo, Lauren J. Chapman,
Tópico(s)Fish Biology and Ecology Studies
ResumoPopulation genetic structure in a riverine cichlid fish was recharacterized 2 years after patterns had been first described. We found that genetic structure changed, as evidenced by changes in FST between years among sites, significant FST between years "within" sites, and a significant proportion of the genetic variation partitioned between years. Most striking, signatures of isolation by distance were eradicated between years. Our study highlights that point-in-time estimates of population genetic structure might not be valid over longer time periods, particularly in systems exposed to strong seasonal or interannual variation in abiotic conditions.
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