TY - JOUR
T1 - Enhanced Growth Rates of the Mediterranean Mussel in a Coastal Lagoon Driven by Groundwater Inflow
AU - Andrisoa, Aladin
AU - Lartaud, Franck
AU - Rodellas, Valentí
AU - Neveu, Ingrid
AU - Stieglitz, Thomas C.
N1 - Funding Information:
This research was supported by the French National Research Agency (ANR) through ANR @RAction chair medLOC (ANR-14-ACHN-0007-01 – project leader TS). AA was partially supported by Labex OT-Med (ANR-11-LABEX-0061), and VR acknowledges support from the European Union’s Horizon 2020 Research and Innovation Program under the Marie Skłodowska-Curie Grant Agreement No 748896.
Publisher Copyright:
© Copyright © 2019 Andrisoa, Lartaud, Rodellas, Neveu and Stieglitz.
Copyright:
Copyright 2019 Elsevier B.V., All rights reserved.
PY - 2019/12/3
Y1 - 2019/12/3
N2 - Groundwater discharge is today recognized as an important pathway for freshwater, nutrients and other dissolved chemical substances to coastal systems. While its effect on supporting primary production in coastal ecosystems is increasingly recognized, its impact on growth of animals at higher trophic level (primary and secondary consumers) is less well documented. Here, we investigate the impact of groundwater discharge on the growth of the Mediterranean mussel (Mytilus galloprovincialis) in a coastal lagoon. Growth rates and condition index (tissue weight/shell weight) of mussels growing at groundwater-exposed sites and at a control site in Salses-Leucate lagoon (France) were measured. The mussels in this lagoon produce circadian (daily rhythm) growth increments in their shell, as opposed to semi-diurnal increments in tidally influenced systems. Mussels from groundwater-influenced sites have higher growth rate and condition index compared to those from a control site. Importantly, growth rates from groundwater-influenced sites are amongst the highest rates reported for the Mediterranean region (41 ± 9 μm d–1). The higher growth rates at groundwater-influenced sites are likely a consequence of both the higher winter temperatures of lagoon water as a result of groundwater discharging with relatively constant temperatures, and the groundwater-driven nutrient supply that increase the food availability to support mussel growth. Overall, this study demonstrates that groundwater discharge to Mediterranean lagoons provides favorable environmental conditions for fast growth of mussels of high commercial-quality.
AB - Groundwater discharge is today recognized as an important pathway for freshwater, nutrients and other dissolved chemical substances to coastal systems. While its effect on supporting primary production in coastal ecosystems is increasingly recognized, its impact on growth of animals at higher trophic level (primary and secondary consumers) is less well documented. Here, we investigate the impact of groundwater discharge on the growth of the Mediterranean mussel (Mytilus galloprovincialis) in a coastal lagoon. Growth rates and condition index (tissue weight/shell weight) of mussels growing at groundwater-exposed sites and at a control site in Salses-Leucate lagoon (France) were measured. The mussels in this lagoon produce circadian (daily rhythm) growth increments in their shell, as opposed to semi-diurnal increments in tidally influenced systems. Mussels from groundwater-influenced sites have higher growth rate and condition index compared to those from a control site. Importantly, growth rates from groundwater-influenced sites are amongst the highest rates reported for the Mediterranean region (41 ± 9 μm d–1). The higher growth rates at groundwater-influenced sites are likely a consequence of both the higher winter temperatures of lagoon water as a result of groundwater discharging with relatively constant temperatures, and the groundwater-driven nutrient supply that increase the food availability to support mussel growth. Overall, this study demonstrates that groundwater discharge to Mediterranean lagoons provides favorable environmental conditions for fast growth of mussels of high commercial-quality.
KW - coastal lagoon
KW - condition index
KW - groundwater discharge
KW - growth rate
KW - Mediterranean mussel
KW - Mytilus galloprovincialis
UR - http://www.scopus.com/inward/record.url?scp=85076996871&partnerID=8YFLogxK
U2 - 10.3389/fmars.2019.00753
DO - 10.3389/fmars.2019.00753
M3 - Artículo
AN - SCOPUS:85076996871
VL - 6
M1 - 753
ER -