Results 61 to 70 of about 11,145 (222)

Light microscopy of echinoderm embryos.

open access: yes, 2004
The chapter discusses commonly used procedures for visualizing both fixed and live echinoderm embryos: (1) formaldehyde fixation of cleavage stage sea urchin embryos, (2) staining and imaging fixed embryos, (3) simultaneous fixation and visualization of ...
David Burgess   +11 more
core   +1 more source

Echinoderm diversity in the Caribbean Sea [PDF]

open access: yes, 2010
The Caribbean is considered a unique biogeographic province, being one of the top five hotspots in the world for marine and terrestrial biodiversity. The echinoderm research on the Caribbean began in the middle of the nineteenth century, and during the ...
Alvarado, Juan José   +1 more
core   +1 more source

Temporal and Spatial Distribution Patterns of Echinoderm Larvae in La Parguera, Puerto Rico

open access: yesRevista de Biología Tropical, 2010
This study describes temporal and spatial abundance patterns of echinoderm larvae in La Parguera, Puerto Rico. For the temporal study, larvae were sampled by a series of monthly tows taken with a 64μm mesh net between the new and full moon from April ...
Stacey M Williams, Jorge García-Sais
doaj  

Long‐term recovery and food web response of benthic macrofauna following cessation of bottom trawling in a marine protected area

open access: yesConservation Science and Practice
The understanding of the depletion of species and communities and recovery following the reduction of pressures is fundamental in conservation biology. The impact of bottom trawl fisheries on benthic communities has been well studied, but there are few ...
Mattias Sköld   +5 more
doaj   +1 more source

Recombinant SpTransformer proteins bind to specific sites on sea urchin phagocytes and modulate SpTransformer gene expression and immune responsiveness

open access: yesFrontiers in Immunology
IntroductionThe California purple sea urchin, Strongylocentrotus purpuratus, relies exclusively on an innate immune system to survive in its pathogen rich marine environment. Central to this defense is the SpTransformer (SpTrf) gene family that is unique
Ryley S. Crow   +2 more
doaj   +1 more source

A new stem group echinoid from the Triassic of China leads to a revised macroevolutionary history of echinoids during the end-Permian mass extinction [PDF]

open access: yesRoyal Society Open Science, 2018
The Permian–Triassic bottleneck has long been thought to have drastically altered the course of echinoid evolution, with the extinction of the entire echinoid stem group having taken place during the end-Permian mass extinction. The Early Triassic fossil
Jeffrey R. Thompson   +8 more
doaj   +1 more source

Morphological and Morphometric Characterisation of Selected Camarodont Sea Urchin (Echinoidea: Camarodonta) Pedicellariae (Paracentrotus lividus, Psammechinus miliaris and Echinus esculentus)

open access: yesActa Zoologica, EarlyView.
ABSTRACT Pedicellariae are small appendages on the surface of the echinoid test, involved in defence, cleaning, and locomotion. Pedicellariae in three species of camarodont sea urchins common in UK waters (Paracentrotus lividus [Lamarck, 1816], Psammechinus miliaris [P.L.S Müller, 1771] and Echinus esculentus [Linnaeus, 1758]) are the focus of this ...
H. C. Reinardy   +6 more
wiley   +1 more source

Biogeochemical, sedimentological and dinoflagellate‐based reconstruction of the Holocene palaeoenvironment of the east Limfjord, Denmark

open access: yesBoreas, EarlyView.
To assess how the eastern part of the Limfjord system has changed over the Holocene, relative to the wider Limfjord and western Baltic region, a sedimentary succession spanning c. 9600–150 cal. a BP was collected from Nibe Bredning, near Sebbersund, from a shallow coastal inlet along the eastern connection between the Limfjord and the Kattegat (north ...
Gabriella M. Weiss   +5 more
wiley   +1 more source

The Metameric Echinoderm

open access: yesIntegrative Organismal Biology
Synopsis Animal phyla are distinguished by their body plans, the ways in which their bodies are organized. A distinction is made, for example, among phyla with bodies of many segments (metameric; e.g., annelids, arthropods, and chordates), others with completely unsegmented bodies (americ; e.g., flatworms and mollusks), and a few phyla ...
openaire   +2 more sources

Echinoderm TIMP Sequences

open access: yes, 2015
The file contains sequences that belong to the TIMP gene family (tissue inhibitors of metalloproteinases). Different alignments represent the results of successive culling procedures to remove possible non-homologues.
Robert W. Reid (3296433)   +9 more
core   +1 more source

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