Figure: Seasonal distribution of
Calanus finmarchicus (Planque et al., 1997)
A: NE Atlantic
B: Southern parts of NW
Atlantic
C: Labrador Sea
Regional variation of abundance
q Low
abundance during winter. cV copepodites migrate to
deeper water to constitute the
overwintering stock.
q Low
levels of molecular genetic diversity; genetic
bottleneck with 75% range reduction and
latitudinal displacement in last glacial
maximum (Bucklin and Wiebe, 1998).
