title: Adverse effects of ocean acidification on early development of squid (Doryteuthis pealeii).
abstract: Anthropogenic carbon dioxide (CO2) is being absorbed into the ocean, altering seawater chemistry, with potentially negative impacts on a wide range of marine organisms. The early life stages of invertebrates with internal and external aragonite structures may be particularly vulnerable to this ocean acidification. Impacts to cephalopods, which form aragonite cuttlebones and statoliths, are of concern because of the central role they play in many ocean ecosystems and because of their importance to global fisheries. Atlantic longfin squid (Doryteuthis pealeii), an ecologically and economically valuable taxon, were reared from eggs to hatchlings (paralarvae) under ambient and elevated CO2 concentrations in replicated experimental trials. Animals raised under elevated pCO2 demonstrated significant developmental changes including increased time to hatching and shorter mantle lengths, although differences were small. Aragonite statoliths, critical for balance and detecting movement, had significantly reduced surface area and were abnormally shaped with increased porosity and altered crystal structure in elevated pCO2-reared paralarvae. These developmental and physiological effects could alter squid paralarvae behavior and survival in the wild, directly and indirectly impacting marine food webs and commercial fisheries.
authors.affiliation: School of Biology, Medical and Biological Sciences Building, University of St Andrews, St Andrews, Fife, United Kingdom.
authors.forename: Maxwell B
authors.initials: MB
authors.lastname: Kaplan
authors.forename: T Aran
authors.initials: TA
authors.lastname: Mooney
authors.forename: Daniel C
authors.initials: DC
authors.lastname: McCorkle
authors.forename: Anne L
authors.initials: AL
authors.lastname: Cohen
mesh_terms: D000818:Animals; D002245:Carbon Dioxide / Q000737:chemistry / Q000494:pharmacology*; D049832:Decapodiformes / Q000033:anatomy & histology / Q000187:drug effects* / Q000254:growth & development; D020387:Food Chain; D006863:Hydrogen-Ion Concentration; D007814:Larva / Q000033:anatomy & histology / Q000187:drug effects* / Q000254:growth & development; D009792:Oceans and Seas; D012098:Reproduction / Q000187:drug effects; D012623:Seawater / Q000737:chemistry*
chemical_list: D002245:Carbon Dioxide