Painted goby larvae under high-CO2 fail to recognize reef sounds

Castrol, Joana M., Amorim, M. Clara P., Oliveira, Ana P., Goncalves, Emmanuel J., Munday, Philip L., Simpson, Stephen D., and Faria, Ana M. (2017) Painted goby larvae under high-CO2 fail to recognize reef sounds. PLoS One, 12 (1). e0170838. pp. 1-16.

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Abstract

Atmospheric CO2 levels have been increasing at an unprecedented rate due to anthropogenic activity. Consequently, ocean pCO(2) is increasing and pH decreasing, affecting marine life, including fish. For many coastal marine fishes, selection of the adult habitat occurs at the end of the pelagic larval phase. Fish larvae use a range of sensory cues, including sound, for locating settlement habitat. This study tested the effect of elevated CO2 on the ability of settlement-stage temperate fish to use auditory cues from adult coastal reef habitats. Wild late larval stages of painted goby (Pomatoschistus pictus) were exposed to control pCO(2) (532 mu atm, pH 8.06) and high pCO(2) (1503 mu atm, pH 7.66) conditions, likely to occur in nearshore regions subjected to upwelling events by the end of the century, and tested in an auditory choice chamber for their preference or avoidance to nighttime reef recordings. Fish reared in control pCO(2) conditions discriminated reef soundscapes and were attracted by reef recordings. This behaviour changed in fish reared in the high CO2 conditions, with settlement- stage larvae strongly avoiding reef recordings. This study provides evidence that ocean acidification might affect the auditory responses of larval stages of temperate reef fish species, with potentially significant impacts on their survival.

Item ID: 50750
Item Type: Article (Research - C1)
ISSN: 1932-6203
Additional Information:

This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Funders: Fundacao para a Ciencia e a Tecnologia (FCT)
Projects and Grants: FCT Project ACIDLARVAE PTDC/MAR-EST/4627/2012, FCT postdoc Grant SFRH/BPD/68673/2010, FCT strategic project UID/MAR/04292/2013
Date Deposited: 20 Sep 2017 11:36
FoR Codes: 06 BIOLOGICAL SCIENCES > 0602 Ecology > 060205 Marine and Estuarine Ecology (incl Marine Ichthyology) @ 50%
06 BIOLOGICAL SCIENCES > 0699 Other Biological Sciences > 069902 Global Change Biology @ 50%
SEO Codes: 96 ENVIRONMENT > 9603 Climate and Climate Change > 960399 Climate and Climate Change not elsewhere classified @ 50%
97 EXPANDING KNOWLEDGE > 970106 Expanding Knowledge in the Biological Sciences @ 50%
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