Effects of elevated pCO2 on reproductive properties of the benthic copepod Tigriopus japonicus and gastropod Babylonia japonica

Kita, Jun; Kikkawa, Takashi; Asai, Takamasa; Ishimatsu, Atsushi

doi:10.1016/j.marpolbul.2013.06.026

Cited by 26 publications

(26 citation statements)

References 18 publications

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“…A pH value of 5.53 causes mortality in 50 % of benthic copepods. About 77 % of adult benthic copepods survived at pH 5.70, supporting the outcome of a previous study (Kita et al 2013). The LpH 50 values of Manila clam and Venus clam were 5.48 and 5.45, respectively.…”

Section: Lph 50 Valuessupporting

confidence: 88%

“…Acute and chronic lethal effects of nauplii on adult benthic copepods (Tigriopus japonicus or Tigriopus sp.) by elevated CO 2 occur at pH values ranging from 5.70 to 5.85, as demonstrated by Kita et al (2013) and this study. Delays in hatching, spawning, and development and immobilization of benthic copepods occur at pH values ranging from 6.04 to 6.31 (Kita et al 2013; this study).…”

Section: Comparison To Previous Studiessupporting

confidence: 84%

“…The immobilization of benthic copepods was explained by metabolic suppression related to CO 2 narcosis, which has been previously observed in CO 2 -tolerent species as a means of adapting to CO 2 -rich environments (Kita et al 2013;Seibel and Walsh 2003). These results indicate that benthic copepods are adversely affected by the acidic seawater (Kita et al 2013). However, epibenthic copepods were relatively tolerant to elevated CO 2 (with lower lethal CO 2 exposure effects) compared to other organisms.…”

Section: Resultssupporting

confidence: 65%

“…This system was an indirect exposure system, avoiding the direct bubbling of CO 2 gas in small beakers (Kita et al 2013) (Fig. 1a).…”

Section: Design Of Co 2 Exposure Systemsmentioning

confidence: 99%

“…Acute and chronic effects of CO 2 on intertidal organisms (including benthic copepods and clams) are summarized in Table 3 (Basallote et al 2012;Berge et al 2006;Duarte et al 2014;Gazeau et al 2010;Kita et al 2013;Michaelidis et al 2005;Talmage and Gobler 2011). Acute and chronic lethal effects of nauplii on adult benthic copepods (Tigriopus japonicus or Tigriopus sp.)…”

Section: Comparison To Previous Studiesmentioning

confidence: 99%

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Lethal and sub-lethal effects of elevated CO2 concentrations on marine benthic invertebrates and fish

Lee

Hong

Kwon

et al. 2016

Environ Sci Pollut Res

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Concern about leakage of carbon dioxide (CO2) from deep-sea storage in geological reservoirs is increasing because of its possible adverse effects on marine organisms locally or at nearby coastal areas both in sediment and water column. In the present study, we examined how elevated CO2 affects various intertidal epibenthic (benthic copepod), intertidal endobenthic (Manila clam and Venus clam), sub-tidal benthic (brittle starfish), and free-living (marine medaka) organisms in areas expected to be impacted by leakage. Acute lethal and sub-lethal effects were detected in the adult stage of all test organisms exposed to varying concentrations of CO2, due to the associated decline in pH (8.3 to 5.2) during 96-h exposure. However, intertidal organisms (such as benthic copepods and clams) showed remarkable resistance to elevated CO2, with the Venus clam being the most tolerant (LpH50 = 5.45). Sub-tidal species (such as brittle starfish [LpH50 = 6.16] and marine medaka [LpH50 = 5.91]) were more sensitive to elevated CO2 compared to intertidal species, possibly because they have fewer defensive capabilities. Of note, the exposure duration might regulate the degree of acute sub-lethal effects, as evidenced by the Venus clam, which showed a time-dependent effect to elevated CO2. Finally, copper was chosen as a model toxic element to find out the synergistic or antagonistic effects between ocean acidification and metal pollution. Combination of CO2 and Cu exposure enhances the adverse effects to organisms, generally supporting a synergistic effect scenario. Overall, the significant variation in the degree to which CO2 adversely affected organisms (viz., working range and strength) was clearly observed, supporting the general concept of species-dependent effects of elevated CO2.

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Section: Lph 50 Valuessupporting

confidence: 88%

Section: Comparison To Previous Studiessupporting

confidence: 84%