TY - JOUR
T1 - Temperature and salinity interactively impact early juvenile development
T2 - A bottleneck in barnacle ontogeny
AU - Nasrolahi, Ali
AU - Pansch, Christian
AU - Lenz, Mark
AU - Wahl, Martin
N1 - Funding Information:
Acknowledgments The authors would like to thank Frank Melzner for his helpful advices and Tahereh Nasrolahi for her helps during first week of experiments. We thank two anonymous reviewers for their valuable comments and suggestions which improved this manuscript substantially. A. N. gratefully thanks the Ministry of Science, Research and Technology (MSRT) of Iran for awarding him a scholarship to pursue his education toward PhD.
Copyright:
Copyright 2013 Elsevier B.V., All rights reserved.
PY - 2013
Y1 - 2013
N2 - When juvenile mortality or juvenile growth is impacted by temperature and salinity, these factors have a substantial effect on recruitment success and population dynamics in benthic ecosystems. Using freshly settled cyprids of Amphibalanus improvisus, we investigated the combined effects of temperature (12, 20 and 28 °C) and salinity (5, 15 and 30 psu) on early juvenile stage performance. Mortality as well as size (basal diameter, dry weight, and ash-free dry weight) was monitored for a period of 40 days. Mortality was high (42-63 %) during the first week following attachment, regardless of the temperature and salinity treatments. Subsequently, mortality and size were interactively influenced by temperature and salinity. Highest mortality and lowest size of juveniles occurred at lowest temperature (12 °C) and salinity (5 psu). Apparently, low temperature (12 °C) narrowed the barnacles' salinity tolerance. Juvenile barnacles constructed more shell material compared to body mass at high temperature and high salinity, while a reverse situation was observed at low temperature and low salinity. Our results demonstrate that environmental changes can directly and/or indirectly alter patterns of survivorship and size. Warming and desalination as predicted for the Baltic Sea in the course of climate change may, however, act antagonistically and compensate each other's isolated effect on barnacles.
AB - When juvenile mortality or juvenile growth is impacted by temperature and salinity, these factors have a substantial effect on recruitment success and population dynamics in benthic ecosystems. Using freshly settled cyprids of Amphibalanus improvisus, we investigated the combined effects of temperature (12, 20 and 28 °C) and salinity (5, 15 and 30 psu) on early juvenile stage performance. Mortality as well as size (basal diameter, dry weight, and ash-free dry weight) was monitored for a period of 40 days. Mortality was high (42-63 %) during the first week following attachment, regardless of the temperature and salinity treatments. Subsequently, mortality and size were interactively influenced by temperature and salinity. Highest mortality and lowest size of juveniles occurred at lowest temperature (12 °C) and salinity (5 psu). Apparently, low temperature (12 °C) narrowed the barnacles' salinity tolerance. Juvenile barnacles constructed more shell material compared to body mass at high temperature and high salinity, while a reverse situation was observed at low temperature and low salinity. Our results demonstrate that environmental changes can directly and/or indirectly alter patterns of survivorship and size. Warming and desalination as predicted for the Baltic Sea in the course of climate change may, however, act antagonistically and compensate each other's isolated effect on barnacles.
UR - http://www.scopus.com/inward/record.url?scp=84876424360&partnerID=8YFLogxK
U2 - 10.1007/s00227-012-2162-8
DO - 10.1007/s00227-012-2162-8
M3 - Article
AN - SCOPUS:84876424360
SN - 0025-3162
VL - 160
SP - 1109
EP - 1117
JO - Marine Biology
JF - Marine Biology
ER -