scholarly journals Morphological and Biochemical Profiles of the Gonadal Cycle in the Sea Urchin Paracentrotus lividus: Wild Type vs. Bred

2017 ◽  
Author(s):  
Bernardetta Anna Tenuzzo ◽  
Elisabetta Carata ◽  
Stefania Mariano ◽  
Luciana Dini
Keyword(s):  
Sea Urchin ◽  
Paracentrotus Lividus ◽  
Wild Type ◽  
Biochemical Profiles

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.

scholarly journals Involvement of Huntingtin in Development and Ciliary Beating Regulation of Larvae of the Sea Urchin, Hemicentrotus pulcherrimus

2021 ◽  
Vol 22 (10) ◽  
pp. 5116
Author(s):  
Hideki Katow ◽  
Tomoko Katow ◽  
Hiromi Yoshida ◽  
Masato Kiyomoto
Keyword(s):  
Sea Urchin ◽  
The Body ◽  
Brdu Incorporation ◽  
Wild Type ◽  
Blastula Stage ◽  
Ciliary Beating ◽  
Marker Proteins ◽  
Disease Protein ◽  
Pattern Regulation ◽  
Hemicentrotus Pulcherrimus

The multiple functions of the wild type Huntington’s disease protein of the sea urchin Hemicentrotus pulcherrimus (Hp-Htt) have been examined using the anti-Hp-Htt antibody (Ab) raised against synthetic oligopeptides. According to immunoblotting, Hp-Htt was detected as a single band at around the 350 kDa region at the swimming blastula stage to the prism larva stage. From the 2-arm pluteus stage (2aPL), however, an additional smaller band at the 165 kDa region appeared. Immunohistochemically, Hp-Htt was detected in the nuclei and the nearby cytoplasm of the ectodermal cells from the swimming blastula stage, and the blastocoelar cells from the mid-gastrula stage. The Ab-positive signal was converged to the ciliary band-associated strand (CBAS). There, it was accompanied by several CBAS-marker proteins in the cytoplasm, such as glutamate decarboxylase. Application of Hp-Htt morpholino (Hp-Htt-MO) has resulted in shortened larval arms, accompanied by decreased 5-bromo-2-deoxyuridin (BrdU) incorporation by the ectodermal cells of the larval arms. Hp-Htt-MO also resulted in lowered ciliary beating activity, accompanied by a disordered swirling pattern formation around the body. These Hp-Htt-MO-induced deficiencies took place after the onset of CBAS system formation at the larval arms. Thus, Hp-Htt is involved in cell proliferation and the ciliary beating pattern regulation signaling system in pluteus larvae.

scholarly journals Biometric characteristics of the wild population of sea urchin Paracentrotus lividus (Lamarck, 1816) on the Tunisian coast

2021 ◽  
Author(s):  
F. Sellem ◽  
B. Bouhaouala-Zahar
Keyword(s):  
Sea Urchin ◽  
Wild Population ◽  
Multivariable Analysis ◽  
Paracentrotus Lividus ◽  
Biometric Data ◽  
Relative Growth ◽  
Tunisian Coast ◽  
Population Discrimination ◽  
Positive Growth ◽  
Negative Growth

AbstractThe present study was conducted to provide biometric data of the edible sea urchin Paracentrotus lividus along the Tunisian coastline where thirteen marine localities were selected randomly. A total of 653 individuals were collected and their metric and weight measurements were recorded. The size distribution of the different samples was determined and relative growth expressions were deduced. Data analysis showed that all localities’ samples of the wild population were dominated by one-size class, except Port Prince and Haouaria. Interestingly, only diameter-height relationships (D-H) were different between the geographical localities. Diameter-weight relationships (D-TW and D-TWTE) revealed a significant negative growth for all the localities, with the exception of Gammarth which showed positive growth for total weight (D-TW). Moreover, the multivariable analysis revealed divergences and/or similarities between metric and weight variables. Altogether, data highlights the inter-population discrimination with respect to geographic localization and clear segregation between the northern and the eastern localities demonstrated the plasticity of the species.

Temperature, salinity and growth rate dependences of Mg/Ca and Sr/Ca ratios of the skeleton of the sea urchin Paracentrotus lividus (Lamarck): an experimental approach

2010 ◽  
Vol 157 (6) ◽  
pp. 1293-1300 ◽  
Author(s):  
Julie Hermans ◽  
Catherine Borremans ◽  
Philippe Willenz ◽  
Luc André ◽  
Philippe Dubois
Keyword(s):  
Growth Rate ◽  
Sea Urchin ◽  
Experimental Approach ◽  
Paracentrotus Lividus

Bacterial phylotypes associated with the digestive tract of the sea urchin Paracentrotus lividus and the ascidian Microcosmus sp.

2007 ◽  
Vol 33 (2) ◽  
pp. 84-91 ◽  
Author(s):  
A. Meziti ◽  
K. Ar. Kormas ◽  
M. -A. Pancucci-Papadopoulou ◽  
M. Thessalou-Legaki
Keyword(s):  
Digestive Tract ◽  
Sea Urchin ◽  
Paracentrotus Lividus ◽  
Bacterial Phylotypes

scholarly journals Habitat and Scale Shape the Demographic Fate of the Keystone Sea Urchin Paracentrotus lividus in Mediterranean Macrophyte Communities

PLoS ONE ◽  
2012 ◽  
Vol 7 (4) ◽  
pp. e35170 ◽  
Author(s):  
Patricia Prado ◽  
Fiona Tomas ◽  
Stefania Pinna ◽  
Simone Farina ◽  
Guillem Roca ◽  
...  
Keyword(s):  
Sea Urchin ◽  
Paracentrotus Lividus ◽  
Macrophyte Communities

Genetic diversity and population structure of the commercially harvested sea urchin Paracentrotus lividus (Echinodermata, Echinoidea)

2004 ◽  
Vol 13 (11) ◽  
pp. 3317-3328 ◽  
Author(s):  
SANDRA DURAN ◽  
CRUZ PALACÍN ◽  
MIKEL A. BECERRO ◽  
XAVIER TURON ◽  
GONZALO GIRIBET
Keyword(s):  
Genetic Diversity ◽  
Population Structure ◽  
Sea Urchin ◽  
Paracentrotus Lividus
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