Larval development of the barnacle Amphibalanus improvisus responds variably but robustly to near-future ocean acidification

摘要: Increasing atmospheric CO2 decreases seawater pH in a phenomenon known as ocean acidification. In two separate experiments we found that larval development of the barnacle Amphibalanus (Balanus) improvisus was not significantly affected by level reduced has been projected for next 150 years. After 3 and 6 days incubation, no consistent effects on developmental speed or size at 7.8 compared with control 8.1. 10 there were net changes survival overall larvae raised 7.6 8.0. all cases, however, significant variation responses between replicate batches (parental genotypes) larvae, some responding positively to pH. Our results suggest non-calcifying stages A. are generally tolerant near-future levels This result is line findings other species suggests barnacles do show greater sensitivity acidification early life history reported invertebrate species. Substantial genetic variability response low may confer adaptive benefits under future