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Interactive effects of temperature and food availability on the growth of Arctica islandica (Bivalvia) juveniles
Ballesta-Artero, I.; Janssen, R.; Van der Meer, J.; Witbaard, R. (2018). Interactive effects of temperature and food availability on the growth of Arctica islandica (Bivalvia) juveniles. Mar. Environ. Res. 133: 67-77. https://dx.doi.org/10.1016/j.marenvres.2017.12.004
In: Marine Environmental Research. Applied Science Publishers: Barking. ISSN 0141-1136, more
Peer reviewed article  

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Author keywords
    Bivalve; Shell and tissue growth; Temperature; Phytoplankton concentration; Siphon activity; Sclerochronology

Authors  Top 
  • Ballesta-Artero, I., more
  • Janssen, R.
  • Van der Meer, J., more
  • Witbaard, R., more

Abstract
    The interest in Arctica islandica growth biology has recently increased due to the widespread use of its shell as a bioarchive. Although temperature and food availability are considered key factors in its growth, their combined influence has not been studied so far under laboratory conditions. We tested the interactive effect of temperature and food availability on the shell and tissue growth of A. islandica juveniles (9–15 mm in height) in a multi-factorial experiment with four food levels (no food, low, medium, and high) and three different temperatures (3, 8, 13 °C). Shell and tissue growth were observed in all treatments, with significant differences occurring only among food levels (2-way ANOVA; P-value < 0.05). Siphon activity (% open siphons), however, was affected by temperature, food, and the interaction between them (2-way ANOVA; P-value < 0.05). Siphon observations, as indication of feeding activities, played a key role to better understand the growth variation between individuals.

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