The impact of CO 2 -driven ocean acidification on early development and calcification in the sea urchin Strongylocentrotus intermedius

Abstract Doo, S. S., Dworjanyn, S. A., Foo, S. A., Soars, N. A., and Byrne, M. 2012. Impacts of ocean acidification on development of the meroplanktonic larval stage of the sea urchin Centrostephanus rodgersii. – ICES Journal of Marine Science, 69: 460–464. The effects of near-future ocean acidification/hypercapnia on larval development were investigated in the sea urchin Centrostephanus rodgersii, a habitat-modifying species from eastern Australia. Decreased pH (−0.3 to −0.5 pH units) or increased pCO2 significantly reduced the percentage of normal larvae. Larval growth was negatively impacted with smaller larvae in the pH 7.6/1800 ppm treatments. The impact of acidification on development was similar on days 3 and 5, indicating deleterious effects early in development. On day 3, increased abnormalities in the pH 7.6/1600 ppm treatment were seen in aberrant prism stage larvae and arrested/dead embryos. By day 5, echinoplutei in this treatment had smaller arm rods. Observations of smaller larvae in C. rodgersii have significant implications for this species because larval success may be a potential bottleneck for persistence in a changing ocean.

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The Impact of Ocean Acidification on Reproduction, Early Development and Settlement of Marine Organisms

Water ◽

10.3390/w3041005 ◽

2011 ◽

Vol 3 (4) ◽

pp. 1005-1030 ◽

Cited By ~ 82

Author(s):

Pauline M. Ross ◽

Laura Parker ◽

Wayne A. O’Connor ◽

Elizabeth A. Bailey

Keyword(s):

Ocean Acidification ◽

Early Development ◽

Marine Organisms ◽

The Impact

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The impact of ocean acidification on reproduction and early development of marine organisms

Wildlife and Climate Change ◽

10.7882/fs.2012.010 ◽

2012 ◽

pp. 31-51 ◽

Cited By ~ 1

Author(s):

Pauline M Ross ◽

Laura Parker ◽

Wayne A O'Connor

Keyword(s):

Ocean Acidification ◽

Early Development ◽

Marine Organisms ◽

The Impact

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CO2-driven ocean acidification repressed the growth of adult sea urchin Strongylocentrotus intermedius by impairing intestine function

Marine Pollution Bulletin ◽

10.1016/j.marpolbul.2020.110944 ◽

2020 ◽

Vol 153 ◽

pp. 110944 ◽

Cited By ~ 3

Author(s):

Yaoyao Zhan ◽

Dongyao Cui ◽

Dongfei Xing ◽

Jun Zhang ◽

Weijie Zhang ◽

...

Keyword(s):

Ocean Acidification ◽

Sea Urchin ◽

Strongylocentrotus Intermedius

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Translational Control of Canonical and Non-Canonical Translation Initiation Factors at the Sea Urchin Egg to Embryo Transition

International Journal of Molecular Sciences ◽

10.3390/ijms20030626 ◽

2019 ◽

Vol 20 (3) ◽

pp. 626

Author(s):

Héloïse Chassé ◽

Sandrine Boulben ◽

Patrick Cormier ◽

Julia Morales

Keyword(s):

Early Development ◽

Sea Urchin ◽

Translation Initiation ◽

Translational Control ◽

Translational Regulation ◽

Sea Urchins ◽

Embryonic Cell ◽

Scaffolding Protein ◽

Initiation Factors ◽

The Impact

Sea urchin early development is a powerful model to study translational regulation under physiological conditions. Fertilization triggers an activation of the translation machinery responsible for the increase of protein synthesis necessary for the completion of the first embryonic cell cycles. The cap-binding protein eIF4E, the helicase eIF4A and the large scaffolding protein eIF4G are assembled upon fertilization to form an initiation complex on mRNAs involved in cap-dependent translation initiation. The presence of these proteins in unfertilized and fertilized eggs has already been demonstrated, however data concerning the translational status of translation factors are still scarce. Using polysome fractionation, we analyzed the impact of fertilization on the recruitment of mRNAs encoding initiation factors. Strikingly, whereas the mRNAs coding eIF4E, eIF4A, and eIF4G were not recruited into polysomes at 1 h post-fertilization, mRNAs for eIF4B and for non-canonical initiation factors such as DAP5, eIF4E2, eIF4E3, or hnRNP Q, are recruited and are differentially sensitive to the activation state of the mechanistic target of rapamycin (mTOR) pathway. We discuss our results suggesting alternative translation initiation in the context of the early development of sea urchins.

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