Being young in a changing world: how temperature and salinity changes interactively modify the performance of larval stages of the barnacle Amphibalanus improvisus
Nasrolahi, Ali, Pansch, Christian, Lenz, Mark and Wahl, Martin (2012) Being young in a changing world: how temperature and salinity changes interactively modify the performance of larval stages of the barnacle Amphibalanus improvisus Marine Biology, 159 (2). pp. 331-340. DOI 10.1007/s00227-011-1811-7.
Nasrolahi_et_al_2011.pdf - Published Version
The fate of key species, such as the barnacle Amphibalanus improvisus, in the course of global change is of particular interest since any change in their abundance and/or performance may entail community-wide effects. In the fluctuating Western Baltic, species typically experience a broad range of environmental conditions, which may preselect them to better cope with climate change. In this study, we examined the sensitivity of two crucial ontogenetic phases (naupliar, cypris) of the barnacle toward a range of temperature (12, 20, and 28°C) and salinity (5, 15, and 30 psu) combinations. Under all salinity treatments, nauplii developed faster at intermediate and high temperatures. Cyprid metamorphosis success, in contrast, was interactively impacted by temperature and salinity. Survival of nauplii decreased with increasing salinity under all temperature treatments. Highest settlement rates occurred at the intermediate temperature and salinity combination, i.e., 20°C and 15 psu. Settlement success of “naive” cyprids, i.e., when nauplii were raised in the absence of stress (20°C/15 psu), was less impacted by stressful temperature/salinity combinations than that of cyprids with a stress history. Here, settlement success was highest at 30 psu particularly at low and high temperatures. Surprisingly, larval survival was not highest under the conditions typical for the Kiel Fjord at the season of peak settlement (20°C/15 psu). The proportion of nauplii that ultimately transformed to attached juveniles was, however, highest under these “home” conditions. Overall, only particularly stressful combinations of temperature and salinity substantially reduced larval performance and development. Given more time for adaptation, the relatively smooth climate shifts predicted will probably not dramatically affect this species.
|Keywords:||Benthic Ecology; barnacle Amphibalanus improvisus; global change; AMPHITRITE DARWIN CIRRIPEDIA; BALANUS-AMPHITRITE; FOOD CONCENTRATION; SURFACE WETTABILITY; ELMINIUS-MODESTUS; NEW-ZEALAND; METAMORPHOSIS; SURVIVAL; THORACICA; ECOLOGY|
|Research affiliation:||OceanRep > The Future Ocean - Cluster of Excellence > FO-R08
OceanRep > The Future Ocean - Cluster of Excellence
OceanRep > GEOMAR > FB3 Marine Ecology > FB3-EOE-B Experimental Ecology - Benthic Ecology
|Projects:||BIOACID, Future Ocean|
|Date Deposited:||02 Nov 2011 08:59|
|Last Modified:||16 Feb 2017 10:38|
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