Results 11 to 20 of about 8,404 (224)

Grazing halos reveal differential ecosystem vulnerabilities in vegetated habitats. [PDF]

Ecology
Abstract The dynamic balance between primary production and herbivory is key to the resilience of plant‐dominated ecosystems across the world. However, many vegetated ecosystems are becoming increasingly susceptible to herbivore‐triggered collapses, as this balance is disrupted due to predator declines, increasing nutrients, and other interacting ...
Minguito-Frutos M, Arthur R, Boada J, Marco-Méndez C, Adams MP, Pagès JF, Buñuel X, Pessarrodona A, Turon X, Ballesteros E, Tamburello L, Farina S, Skouradakis G, Kletou D, Cebrian E, Santamaría J, Verdura J, Alcoverro T.   +17 more
europepmc   +2 more sources

Unravelling Hidden Trophic Interactions Among Sea Urchin Juveniles and Macroinvertebrates by DNA Amplification. [PDF]

Mol Ecol
ABSTRACT Rocky reefs may shift between two distinct stable states: productive algal forests, characterised by high abundance and biodiversity of macrofauna, and impoverished barrens, dominated by overgrazing sea urchins. Barren states may persist despite the recovery of adult sea urchin predators, suggesting additional stabilising mechanisms.
Sutera A, Bonaviri C, Trapani FD, Bella F, Macic V, Marković O, Hereu B, Michele R.   +7 more
europepmc   +2 more sources

Skeletogenic Expression of Integrin Alpha, Talin and Npnt Genes and Npnt Role in Sea Urchin Skeletogenesis. [PDF]

J Exp Zool B Mol Dev Evol
Three integrin alpha genes and the cytoskeletal adaptor talin are enriched in sea urchin skeletogenic cells during early skeletogenesis. The extracellular matrix protein nephronectin (Npnt) is expressed in the skeletogenic cells throughout skeletogenesis and supports normal skeletal growth, highlighting a potential role for cell–matrix interactions in ...
Chen S, Gildor T, Tewari P, Ben-Tabou de-Leon S.   +3 more
europepmc   +2 more sources

The male and female gonad transcriptome of the edible sea urchin, Paracentrotus lividus: Identification of sex-related and lipid biosynthesis genes

Aquaculture Reports, 2022
Paracentrotus lividus is the most abundant, geographically distributed, and desirable echinoid species in Europe. Although economically important, this species has scarce genomic resources available.
André M. Machado, Sergio Fernández-Boo, Manuel Nande, Rui Pinto, Benjamin Costas, L. Filipe C. Castro   +5 more
doaj   +1 more source

Intensive sea urchin harvest rescales Paracentrotus lividus population structure and threatens self-sustenance [PDF]

PeerJ, 2023
The harvest of the edible sea urchin Paracentrotus lividus is intensively practiced in some regions of the Western Mediterranean Sea. The removal of the largest individuals can determine an overall reduction in population size and a size class truncation
Nicole Ruberti, Gianni Brundu, Giulia Ceccherelli, Daniele Grech, Ivan Guala, Barbara Loi, Simone Farina   +6 more
doaj   +2 more sources

Habitat preferences of the sea urchin Paracentrotus lividus  [PDF]

Marine Ecology Progress Series, 2012
Population structure of the sea urchin Paracentrotus lividus seems to vary depending on the habitat, as, on average, urchin density is higher on rocks, and size is larger in Posidonia oceanica seagrass. Here, we tested the hypothesis that P. lividus would choose P.
Pinna, S, Pais, A, Campus, P, Sechi, N, Ceccherelli, G   +4 more
openaire   +2 more sources

Proteomic dataset of Paracentrotus lividus gonads of different sexes and at different maturation stages

Data in Brief, 2016
We report the proteomic dataset of gonads from wild Paracentrotus lividus related to the research article entitled “Proteomic changes occurring along gonad maturation in the edible sea urchin Paracentrotus lividus” [1].
Stefania Ghisaura, Barbara Loi, Grazia Biosa, Maura Baroli, Daniela Pagnozzi, Tonina Roggio, Sergio Uzzau, Roberto Anedda, Maria Filippa Addis   +8 more
doaj   +1 more source

Presence of a low molecular weight lectin in the coelomic fluid of the sea urchin Paracentrotus lividus [PDF]

Invertebrate Survival Journal, 2009
A low molecular weight (MW) lectin (Paracentrotus lividus small lectin, PlSL) has been found in the sea urchin, Paracentrotus lividus. After gel electrophoresis under denaturing conditions, PlSL exhibits a MW of 13 kDa, while its hemagglutinating ...
F Drago, D Malagoli, F M Pezzino, V D’Urso, F Sammartano   +4 more
doaj   +1 more source

Interspecific Analysis of Sea Urchin Adhesive Composition Emphasizes Variability of Glycans Conjugated With Putative Adhesive Proteins

Frontiers in Marine Science, 2021
Sea urchins possess specialized adhesive organs, tube feet. Although initially believed to function as suckers, it is currently accepted that they rely on adhesive and de-adhesive secretions to attach and detach repeatedly from the substrate.
Lisa Gaspar, Patrick Flammang, Ricardo José, Ricardo José, Ricardo Luis, Ricardo Luis, Patrício Ramalhosa, Patrício Ramalhosa, João Monteiro, Natacha Nogueira, Natacha Nogueira, João Canning-Clode, João Canning-Clode, Romana Santos, Romana Santos   +14 more
doaj   +1 more source

Cold Shock Compromises the Electrically Mediated Block to Polyspermy in Lytechinus variegatus Eggs. [PDF]

Mol Reprod Dev
ABSTRACT Exposure to low temperature prior to insemination increases the likelihood of polyspermy in Lytechinus variegatus eggs. Electrophysiological recordings reveal that cold shock partially disrupts the egg's action potential, producing a subthreshold depolarization during the fertilization response.
Ivonnet PI, Chambers L, Künzi L, Garcia G.   +3 more
europepmc   +2 more sources