Results 21 to 30 of about 20,685 (208)

Echinoderm radial glia in adult cell renewal, indeterminate growth, and regeneration

open access: yesFrontiers in Neural Circuits, 2023
Echinoderms are a phylum of marine deterostomes with a range of interesting biological features. One remarkable ability is their impressive capacity to regenerate most of their adult tissues, including the central nervous system (CNS).
Vladimir Mashanov   +4 more
doaj   +1 more source

Transfer of a large gene regulatory apparatus to a new developmental address in echinoid evolution [PDF]

open access: yes, 2008
Of the five echinoderm classes, only the modern sea urchins (euechinoids) generate a precociously specified embryonic micromere lineage that ingresses before gastrulation and then secretes the biomineral embryonic skeleton.
Arenas-Mena   +20 more
core   +2 more sources

Temporal and spatial variation in population structure among brooding sea stars in the genus Leptasterias

open access: yesEcology and Evolution, 2021
Temporal genetic studies of low‐dispersing organisms are rare. Marine invertebrates lacking a planktonic larval stage are expected to have lower dispersal, low gene flow, and a higher potential for local adaptation than organisms with planktonic ...
Laura M. Melroy, C. Sarah Cohen
doaj   +1 more source

The neuropeptide transcriptome of a model echinoderm, the sea urchin Strongylocentrotus purpuratus [PDF]

open access: yes, 2012
The work reported here was supported by a grant from the University of London Central Research ...
Elphick, MR, Rowe, ML
core   +1 more source

Developmental atlas of the indirect-developing sea urchin Paracentrotus lividus: From fertilization to juvenile stages

open access: yesFrontiers in Cell and Developmental Biology, 2022
The sea urchin Paracentrotus lividus has been used as a model system in biology for more than a century. Over the past decades, it has been at the center of a number of studies in cell, developmental, ecological, toxicological, evolutionary, and ...
Laurent Formery   +8 more
doaj   +1 more source

Intertidal estimates of sea urchin abundance reveal congruence in spatial structure for a guild of consumers

open access: yesEcology and Evolution, 2021
We hypothesized congruence in the spatial structure of abundance data sampled across multiple scales for an ecological guild of consumers that exploit similar nutritional and habitat resources.
Kevin C. K. Ma   +5 more
doaj   +1 more source

Petrogenesis of diachronous mixed siliciclastic-carbonate megafacies in the cool-water Oligocene Tikorangi Formation, Taranaki Basin, New Zealand [PDF]

open access: yes, 2003
The Oligocene (Whaingaroan-Waitakian) Tikorangi Formation is a totally subsurface, lithostratigraphically complex, mixed siliciclastic-limestone-rich sequence forming an important fracture reservoir within Taranaki Basin, New Zealand.
Berggren W. A.   +19 more
core   +2 more sources

Biochemical, Anatomical, and Pharmacological Characterization of Calcitonin-Type Neuropeptides in Starfish: Discovery of an Ancient Role as Muscle Relaxants

open access: yesFrontiers in Neuroscience, 2018
Calcitonin (CT) is a peptide hormone released by the thyroid gland that regulates blood Ca2+ levels in mammals. The CT gene is alternatively spliced, with one transcript encoding CT and another transcript encoding the CT-like neuropeptide calcitonin-gene
Weigang Cai   +7 more
doaj   +1 more source

Neuropeptidergic Systems in Pluteus Larvae of the Sea Urchin Strongylocentrotus purpuratus: Neurochemical Complexity in a “Simple” Nervous System

open access: yesFrontiers in Endocrinology, 2018
The nervous system of the free-living planktonic larvae of sea urchins is relatively “simple,” but sufficiently complex to enable sensing of the environment and control of swimming and feeding behaviors.
Natalie J. Wood   +10 more
doaj   +1 more source

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