Journal article
Effects of elevated temperature on larval settlement and post-settlement survival in scleractinian corals, Acropora solitaryensis and Favites chinensis
Marine Biology, Vol.152(5), pp.1181-1185
2007
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Source: InCites
Abstract
<p>We examined the effects of elevated temperature under different exposure periods on larval settlement and post-settlement survival in scleractinian corals, <em>Acropora solitaryensis</em> and <em>Favites chinensis</em>. In the first experiment with the subtropical coral, <em>A. solitaryensis</em>, the numbers of larvae settling and those dead were examined daily for 5 days at 20, 23 (ambient), 26 and 29°C conditions. Larval settlement of <em>A. solitaryensis</em> was initially greater at higher temperature conditions, but the peak in number of settled larvae shifted from 29 to 26°C by day 5, due to ca. 90% post-settlement mortality at 29°C condition. In order to determine the effects under short-term exposure, larvae of <em>F. chinensis</em> were exposed to 27 (ambient), 31 or 34°C only for one hour in the second experiment. The number of larvae settling for 24 h after the exposure and their survivorship over subsequent week was monitored in the ambient temperature condition. Larvae of <em>F. chinensis</em> exhibited greater settlement at higher temperature treatments and constantly low post-settlement mortalities (< ca. 17%) in all temperature treatments, resulting in the highest number of settled larvae at 34°C treatment. These results suggested two different effects of elevated temperature on the early stages of recruitment process of scleractinian corals; (1) the positive effect on larval settlement and (2) the negative effect on post-settlement survival under prolonged exposure.</p>
Details
- Title
- Effects of elevated temperature on larval settlement and post-settlement survival in scleractinian corals, Acropora solitaryensis and Favites chinensis
- Creators
- Yoko Nozawa - Biological Institute on KuroshioPeter Lynton Harrison - Southern Cross University
- Publication Details
- Marine Biology, Vol.152(5), pp.1181-1185
- Identifiers
- 4205; 991012822141402368
- Academic Unit
- Faculty of Science and Engineering; Science; National Marine Science Centre; School of Environment, Science and Engineering
- Resource Type
- Journal article