TY - JOUR
T1 - High densities of stalked barnacle larvae (Pollicipes pollicipes) inside a river plume
AU - Höfer, Juan
AU - Muñiz, Carlota
AU - Weidberg, Nicolás
AU - García-Flórez, Lucía
AU - Acuña, José Luis
N1 - Publisher Copyright:
© The Author 2016. Published by Oxford University Press.
PY - 2017/3/1
Y1 - 2017/3/1
N2 - The pelagic phases of the commercially important stalked barnacle, Pollicipes pollicipes (Cirripedia: Scalpellomorpha), still remain a knowledge gap due to the extreme paucity of these larvae in the plankton. During four cruises at the Nalón River mouth (Spain, Southern Bay of Biscay) high densities of these larvae were consistently found inside the river plume. Surface currents, hydrographic conditions and meroplankton distributions were measured during each cruise by means of several GPS-tracked drifters, a CTD probe and a surface floating bongo net. Surface abundance of P. pollicipes larvae reached densities over 300 individuals per cubic meter within the plume and only 24 outside, and were strongly and positively correlated with chlorophyll a concentrations. Larvae were probably gathered and entrained into the river plume by offshore convergent currents. We conclude that river plumes might act as nurseries for P. pollicipes larvae due to their enhanced food supply and their mechanistic effect of aggregation.
AB - The pelagic phases of the commercially important stalked barnacle, Pollicipes pollicipes (Cirripedia: Scalpellomorpha), still remain a knowledge gap due to the extreme paucity of these larvae in the plankton. During four cruises at the Nalón River mouth (Spain, Southern Bay of Biscay) high densities of these larvae were consistently found inside the river plume. Surface currents, hydrographic conditions and meroplankton distributions were measured during each cruise by means of several GPS-tracked drifters, a CTD probe and a surface floating bongo net. Surface abundance of P. pollicipes larvae reached densities over 300 individuals per cubic meter within the plume and only 24 outside, and were strongly and positively correlated with chlorophyll a concentrations. Larvae were probably gathered and entrained into the river plume by offshore convergent currents. We conclude that river plumes might act as nurseries for P. pollicipes larvae due to their enhanced food supply and their mechanistic effect of aggregation.
KW - Bay of Biscay
KW - Pollicipes pollicipes
KW - convergent current
KW - meroplankton
KW - river plume
UR - http://www.scopus.com/inward/record.url?scp=85016952779&partnerID=8YFLogxK
U2 - 10.1093/plankt/fbw093
DO - 10.1093/plankt/fbw093
M3 - Article
AN - SCOPUS:85016952779
VL - 39
SP - 316
EP - 329
JO - Journal of Plankton Research
JF - Journal of Plankton Research
SN - 0142-7873
IS - 2
ER -