scholarly journals Impact of Ocean Warming and Ocean Acidification on Larval Development and Calcification in the Sea Urchin Tripneustes gratilla

PLoS ONE ◽  
2010 ◽  
Vol 5 (6) ◽  
pp. e11372 ◽  
Author(s):  
Hannah Sheppard Brennand ◽  
Natalie Soars ◽  
Symon A. Dworjanyn ◽  
Andrew R. Davis ◽  
Maria Byrne
Keyword(s):  
Ocean Acidification ◽  
Larval Development ◽  
Sea Urchin ◽  
Ocean Warming ◽  
Tripneustes Gratilla

scholarly journals Impacts of ocean acidification on development of the meroplanktonic larval stage of the sea urchin Centrostephanus rodgersii

2011 ◽  
Vol 69 (3) ◽  
pp. 460-464 ◽  
Author(s):  
Steve S. Doo ◽  
Symon A. Dworjanyn ◽  
Shawna A. Foo ◽  
Natalie A. Soars ◽  
Maria Byrne
Keyword(s):  
Ocean Acidification ◽  
Larval Development ◽  
Sea Urchin ◽  
Larval Stage ◽  
Larval Growth ◽  
Marine Science ◽  
Eastern Australia ◽  
The Impact ◽  
Near Future

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.

scholarly journals Influence of temperature variation on embryonic and early larval development of a commercially important tropical sea urchin Tripneustes gratilla (Linnaeus, 1758)

2018 ◽  
Vol 65 ◽  
Author(s):  
Md. Shamim Parvez ◽  
M. Aminur Rahman ◽  
Fatimah Md. Yusoff ◽  
Aziz Arshad ◽  
Sang-Go Lee
Keyword(s):  
Larval Development ◽  
Sea Urchin ◽  
Captive Breeding ◽  
Developmental Time ◽  
Larval Stages ◽  
Tripneustes Gratilla ◽  
Temperature Levels ◽  
Time Required ◽  
Tropical Sea ◽  
Early Larval Development

<p>The present study investigated the influence of different temperature levels (16, 19, 22, 25, 28, 31 and 34oC) on embryonic and early larval development of the tropical sea urchin, <em>Tripneustes gratilla</em> (Linnaeus, 1758) in a controlled laboratory condition. The critical lower and higher temperature for embryonic development was found to be 16 and 34oC, respectively. Embryos reared in these temperatures exhibited 100% abnormality within 48 h post-insemination. The time required to reach embryonic and larval stages was increased with temperature from 28oC followed by 31, 25, 22 and 19oC. The developmental time of 2-cell to 4-arm pluteus larvae showed significant (p&lt;0.05) differences. The survival (%) of larvae at the prism, 2-arm and 4-arm stages were observed as dissimilar from 22 to 34oC, and the highest values (100% or near 100%) were found at 25 and 28oC. The morphometric measurements from prism to 4-arm pluteus larvae at different temperatures differed significantly (p&lt;0.05). However among the temperatures evaluated, 28oC was found as the best temperature for better growth and development of larvae at all stages. The findings of the study would help to develop captive breeding and seed production programmes for commercial aquaculture of the species.</p>

Effects of ocean acidification on larval development and early post-hatching traits in Concholepas concholepas (loco)

2014 ◽  
Vol 514 ◽  
pp. 87-103 ◽  
Author(s):  
PH Manríquez ◽  
ME Jara ◽  
ML Mardones ◽  
R Torres ◽  
NA Lagos ◽  
...  
Keyword(s):  
Ocean Acidification ◽  
Larval Development ◽  
Concholepas Concholepas

scholarly journals Effects of Glyphosate-Based and Derived Products on Sea Urchin Larval Development

2020 ◽  
Vol 8 (9) ◽  
pp. 661
Author(s):  
Davide Asnicar ◽  
Costanza Cappelli ◽  
Ahmad Safuan Sallehuddin ◽  
Nur Atiqah Maznan ◽  
Maria Gabriella Marin
Keyword(s):  
Larval Development ◽  
Sea Urchin ◽  
Marine Invertebrates ◽  
Parent Compound ◽  
Paracentrotus Lividus ◽  
Marine Species ◽  
Negative Effects ◽  
Aminomethylphosphonic Acid ◽  
Main Degradation Product ◽  
Herbicide Glyphosate

Despite the widespread use of herbicide glyphosate in cultivation, its extensive runoff into rivers and to coastal areas, and the persistence of this chemical and its main degradation product (aminomethylphosphonic acid, AMPA) in the environment, there is still little information on the potential negative effects of glyphosate, its commercial formulation Roundup® and AMPA on marine species. This study was conducted with the aim of providing a comparative evaluation of the effects of glyphosate-based and its derived chemicals on the larval development of the sea urchin Paracentrotus lividus, thus providing new data to describe the potential ecotoxicity of these contaminants. In particular, the effects on larval development, growth and metabolism were assessed during 48 h of exposure from the time of egg fertilization. The results confirm that AMPA and its parent compound, glyphosate have similar toxicity, as observed in other marine invertebrates. However, interestingly, the Roundup® formulation seemed to be less toxic than the glyphosate alone.

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