Growth and pelagic larval duration of presettlement and newly settled neon damselfish, Pomacentrus coelestis, at multiple spatial scales
Kingsford, Michael, Smith, Felicity, and Flood, M.J. (2011) Growth and pelagic larval duration of presettlement and newly settled neon damselfish, Pomacentrus coelestis, at multiple spatial scales. Coral Reefs, 30 (1). pp. 203-214.
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Variation in planktonic larval duration (PLD) and growth of Pomacentrus coelestis was investigated on the southern Great Barrier Reef at multiple spatial scales. A tetracycline experiment, using presettlement fish, demonstrated that increments were formed daily. Variation in PLD was low between reef clusters (0%), reefs within clusters (0.4–8.5%) and sites within reefs (13.1%), but high among individuals within sites (86.5–91.5%); PLD ranged from 15 to 27 days. It was predicted that PLD would vary at greater spatial scales, but differences were low and a review of all studies on P. coelestis in tropical waters had a similar range of PLDs to our study. Contrary to a hypothesis that fish with slower growth would have longer PLDs, there was no significant relationship between mean presettlement increment width of otoliths and PLD for fish from the two reef clusters examined. There were, however, differences in presettlement growth rates between reef clusters (over 100 km apart) over the last 5–6 days of planktonic life. Warmer waters at the Swain Reefs (0.1–1°C) may have contributed to these differences in growth. Stochastic transport of larvae, habitat choice by presettlement fish in a reef mosaic, and variable conditions in the plankton may contribute to variation in PLD, presettlement growth and size-at-settlement in P. coelestis. We propose that prolonged periods of settlement choice may obscure simple relationships between PLD and size-at-settlement.
|Item Type:||Article (Refereed Research - C1)|
|Keywords:||Pomacentrus coelestis, spatial variation, pelagic larval duration, presettlement growth, habitat selection|
|FoR Codes:||06 BIOLOGICAL SCIENCES > 0602 Ecology > 060201 Behavioural Ecology @ 100%|
|SEO Codes:||97 EXPANDING KNOWLEDGE > 970106 Expanding Knowledge in the Biological Sciences @ 100%|
|Deposited On:||29 Feb 2012 10:12|
|Last Modified:||18 Oct 2013 01:26|
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