Temperature and salinity interactively impact early juvenile development: a bottleneck in barnacle ontogeny.

Nasrolahi, Ali, Pansch, Christian , Lenz, Mark and Wahl, Martin (2013) Temperature and salinity interactively impact early juvenile development: a bottleneck in barnacle ontogeny. Marine Biology, 160 (5). pp. 1109-1117. DOI 10.1007/s00227-012-2162-8.

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Abstract

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.

Document Type: Article
Additional Information: WOS:000318002900006
Keywords: Temperature, salinity, Baltic Sea, climate change, Amphibalanus improvises; EARLY POSTSETTLEMENT MORTALITY; BENTHIC MARINE-INVERTEBRATES; BALANUS-AMPHITRITE; INTERTIDAL BARNACLE; MYTILUS-EDULIS; SEMIBALANUS-BALANOIDES; DELAYED METAMORPHOSIS; TEMPORAL VARIATION; GROWTH; SETTLEMENT
Research affiliation: OceanRep > The Future Ocean - Cluster of Excellence > FO-R08
OceanRep > The Future Ocean - Cluster of Excellence
Kiel University
OceanRep > GEOMAR > FB3 Marine Ecology > FB3-EOE-B Experimental Ecology - Benthic Ecology
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.1007/s00227-012-2162-8
ISSN: 0025-3162
Projects: Future Ocean
Date Deposited: 21 Dec 2012 09:28
Last Modified: 29 Jun 2018 10:43
URI: http://oceanrep.geomar.de/id/eprint/19895

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