Results 51 to 60 of about 8,404 (224)

Teratogenic Effects of Diatom Metabolites on Sea Urchin Paracentrotus lividus Embryos

Marine Drugs, 2010
The diatom-derived polyunsaturated aldehydes (PUAs), 2-trans,4-trans-decadienal, 2-trans,4-trans-octadienal, 2-trans,4-trans,7-octatrienal, 2-trans,4-trans-heptadienal, as well as tridecanal were tested on early and later larval development in the sea ...
Giovanna Romano, Antonio Miralto, Adrianna Ianora   +2 more
doaj   +1 more source

Habitat and scale shape the demographic fate of the keystone sea urchin Paracentrotus lividus in Mediterranean macrophyte communities [PDF]

, 2012
Demographic processes exert different degrees of control as individuals grow, and in species that span several habitats and spatial scales, this can influence our ability to predict their population at a particular life-history stage given the previous ...
Alcoverro, Teresa, Ceccherelli, Giulia, Farina, Simone, Pinna, Stefania, Prado, Patricia, Roca, Guillem, Romero, Javier, Tomas, Fiona   +7 more
core  

Cabomba caroliniana and Schoenoplectus californicus as Antifouling Candidates: Anti‐Attachment and Toxicological Effects in Aurelia coerulea (Cnidaria, Scyphozoa)

Environmental Toxicology, Volume 41, Issue 6, Page 356-372, June 2026.
ABSTRACT Biofouling on artificial surfaces in aquatic ecosystems leads to significant economic losses. Current antifouling paints, while effective, often harm the aquatic environment. This study explores ecologically safe antifouling alternatives derived from plants, focusing on the aquatic macrophytes Cabomba caroliniana (CC) and Schoenoplectus ...
Mikael Luiz Pereira Morales, Laís Olivera das Neves, Ayman Shaik, Hafizah Chenia, Maximiliano Manuel Maronna, Sanye Soroldoni, Renato Mitsuo Nagata, Ng Haig They, Vanessa Ochi Agostini, Grasiela Lopes Leães Pinho   +9 more
wiley   +1 more source

Untangling the Toxicity Dilemma of the Orbetello Lagoon Sediments in Paracentrotus lividus Bioassay: Trace Metals vs. Ammonium

Nitrogen
This study assesses sediment toxicity in the historically contaminated Orbetello Lagoon (southern Tuscany) using Paracentrotus lividus embryo development bioassays.
Davide Sartori, Simona Macchia, Giorgio Tranchida, Paolo Altemura, Vincenzo Tancredi, Alice Scuderi, Maria Elena Piccione, Stefano Ferrari, Andrea Gaion   +8 more
doaj   +1 more source

Cyclin B Translation Depends on mTOR Activity after Fertilization in Sea Urchin Embryos. [PDF]

PLoS ONE, 2016
The cyclin B/CDK1 complex is a key regulator of mitotic entry. Using PP242, a specific ATP-competitive inhibitor of mTOR kinase, we provide evidence that the mTOR signalling pathway controls cyclin B mRNA translation following fertilization in ...
Héloïse Chassé, Odile Mulner-Lorillon, Sandrine Boulben, Virginie Glippa, Julia Morales, Patrick Cormier   +5 more
doaj   +1 more source

Cost of parasite exposure depends on host ontogeny 寄生接觸的代價依賴於宿主發育階段

Ecological Entomology, Volume 51, Issue 3, Page 592-603, June 2026.
The cost of parasite exposure varies across host developmental stages, demonstrating that ontogeny influences the expression of non‐consumptive effects (NCEs). Mite exposure resulted in consumptive effects in fly eggs and NCEs in early‐stage pupae; mite longevity was comparable when provisioned with pupae or water but increased when provisioned with ...
Lisa R. MacLeod, Connor L. MacPherson, Lien T. Luong   +2 more
wiley   +1 more source

Interlaboratory assessment of marine bioassays to evaluate the environmental quality of coastal sediments in Spain. III. Bioassay using embryos of the sea urchin Paracentrotus lividus

Ciencias Marinas, 2006
 The present paper reports the results of an interlaboratory variability study of a bioassay using larval stages of the marine sea urchin Paracentrotus lividus.
MC Casado-Martínez, N Fernández, J Lloret, L Marín, C Martínez-Gómez, I Riba, R Beiras, L Saco-Álvarez, TA DelValls   +8 more
doaj   +1 more source

The oral-aboral axis of a sea urchin embryo is specified by first cleavage [PDF]

, 1989
Several lines of evidence suggest that the oral-aboral axis in Strongylocentrotus purpuratus embryos is specified at or before the 8-cell stage. Were the oral-aboral axis specified independently of the first cleavage plane, then a random association of ...
Britten, Roy J., Cameron, R. Andrew, Davidson, Eric H., Fraser, Scott E.   +3 more
core  

First Morphological and Molecular Evidence of the Negative Impact of Diatom-Derived Hydroxyacids on the Sea Urchin Paracentrotus lividus. [PDF]

, 2016
Oxylipins (including polyunsaturated aldehydes PUAs, hydoxyacids and epoxyalcohols) are the end-products of a lipoxygenase/hydroperoxide lyase metabolic pathway in diatoms.
Adrianna Ianora, Fontana, Ghiglione, Giovanna Romano, Graf, Maria Costantini, Matt G. Bentley, Nadia Ruocco, Pinsino, Stefano Varrella   +9 more
core   +1 more source

Ecotoxicological Evaluation of Organic Sunscreens Used Worldwide, Alone and in Mixture, on Terrestrial Plants

Environmental Toxicology, Volume 41, Issue 5, Page 257-269, May 2026.
ABSTRACT The environmental hazards of sunscreens are discussed worldwide. However, there are few ecotoxicological studies on these compounds alone for edaphic organisms, and none for their mixtures. Avobenzone (1 and 10 ng/L), octocrylene (10 and 100 μg/L), and oxybenzone (2 and 20 μg/L), alone and in binary combinations (between the lowest and the ...
Diego Espirito Santo, Edson Araújo de Almeida, Elisângela Dusman, A. C. Downs, Regiane da Silva Gonzalez, Osvaldo Valarini Junior, Ana Paula Peron   +6 more
wiley   +1 more source