Brooded coral larvae differ in their response to high temperature and elevated pCO2 depending on the day of release

摘要: To evaluate the effects of temperature and pCO2 on coral larvae, brooded larvae Pocillopora damicornis from Nanwan Bay, Taiwan (21°56.179′N, 120°44.85′E), were exposed to ambient (419–470 μatm) high (604–742 at ~25 ~29 °C in two experiments conducted March 2010 2012. Larvae sampled four consecutive lunar days (LD) synchronized with spawning following new moon, incubated treatments for 24 h, measured respiration, maximum photochemical efficiency PSII (F v/F m), mortality. The most striking outcome was a strong effect time (i.e., LD) performance: respiration affected by an LD × interaction 2012, as well 2012; F m (but not 2012); mortality 2010, There no main but depressed metabolic rate reduced Therefore, differences larval performance depended day release resulted varying susceptibility future predicted environmental conditions. These results underscore importance considering brood variation across when designing experiments. Subtle experimental outcomes between years suggest that transgenerational plasticity combination unique histories exposure physical conditions can modulate response climate change ocean acidification.