Please use this identifier to cite or link to this item: http://hdl.handle.net/10400.12/5908
Title: Effects of high pCO2 on early life development of pelagic spawning marine fish
Author: Faria, Ana Margarida
Filipe, Soraia
Lopes, Ana F.
Oliveira, Ana P.
Gonçalves, Emanuel João
Ribeiro, Laura
Keywords: Carbon dioxide
Growth rate
Hatching rate
Larval development
Otoliths
Survival rate
Issue Date: 2017
Publisher: Commonwealth Scientific and Industrial Research Organization Publishing
Citation: Marine and Freshwater Research, 68(11) Doi:10.1071/MF16385
Abstract: The present study investigated the effect of elevated pCO2 on the development of early stages of the pelagic spawning marine fish Solea senegalensis, Diplodus sargus and Argyrosomus regius. Eggs and larvae were reared under control (pH 8.0, ,570 matm) and two elevated pCO2 conditions (pH 7.8, ,1100 matm; pH 7.6, ,1900 matm) until mouth opening (3 days post-hatching). Egg size did not change with exposure to elevated pCO2, but hatching rate was significantly reduced under high pCO2 for all three species. Survival rate was not affected by exposure to increased pCO2, but growth rate was differently affected across species, with A. regius growing faster in the mid-level pCO2 treatment compared with control conditions. S. senegalensis and A. regius hatched with smaller yolk sacs under increased pCO2 but endogenous reserves of D. sargus were not affected. Otoliths were consistently larger under elevated pCO2 conditions for all the three species. Differences among egg batches and a significant interaction between batch and pCO2 suggest that other factors, such as egg quality, can influence the response to increased pCO2. Overall, the results support the occurrence of a species-specific response to pCO2, but highlight the need for cautious analysis of potential sensitivity of species from unreplicated observations.
Description: Número de acesso: WOS:000413690000014
Peer review: yes
URI: http://hdl.handle.net/10400.12/5908
DOI: 10.1071/MF16385
ISSN: 1323-1650
Appears in Collections:BMAR - Artigos em revistas internacionais

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