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Elevated temperature elicits greater effects than decreased pH on the development, feeding and metabolism of northern shrimp (Pandalus borealis) larvae
- Source :
- Marine Biology. August 1, 2013, Vol. 160 Issue 8, p2037, 12 p.
- Publication Year :
- 2013
-
Abstract
- Climate models predict that the average temperature in the North Sea could increase 3-5°C and surface-waters pH could decrease 0.3-0.5 pH units by the end of this century. Consequently, we investigated the combined effect of decreased pH (control pH 8.1; decreased pH 7.6) and temperature (control 6.7°C; elevated 9.5°C) on the hatching timing and success, and the zoeal development, survival, feeding, respiration and growth (up to stage IV zoea) of the northern shrimp, Pandalus borealis. At elevated temperature, embryos hatched 3 days earlier, but experienced 2-4% reduced survival. Larvae developed 9 days faster until stage IV zoea under elevated temperature and exhibited an increase in metabolic rates (ca 20%) and an increase in feeding rates (ca 15-20%). Decreased pH increased the development time, but only at the low temperature. We conclude that warming will likely exert a greater effect on shrimp larval development than ocean acidification manifesting itself as accelerated developmental rates with greater maintenance costs and decreased recruitment in terms of number and size.<br />Introduction Ocean acidification (OA) has been shown to alter calcification, metabolism and the developmental trajectories and survival of marine invertebrates (Doney et al. 2009; Byrne 2011; Byrne 2012). As development, [...]
Details
- Language :
- English
- ISSN :
- 00253162
- Volume :
- 160
- Issue :
- 8
- Database :
- Gale General OneFile
- Journal :
- Marine Biology
- Publication Type :
- Academic Journal
- Accession number :
- edsgcl.341935363
- Full Text :
- https://doi.org/10.1007/s00227-012-2072-9