Results 61 to 70 of about 16,899 (204)
Systematics of eocrinoid echinoderms [PDF]
, 2011 This work deals with systematics of eocrinoid echinoderms but also with their morphology and classification within the echinoderms. Two theories concerning systematic of eocrinoid echinoderms are compiled in this work.
Nohejlová, Martina
core
Boreas, 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
Integrative Organismal BiologySynopsis 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
Ophiuroids discovered in the middle triassic hypersaline environment. [PDF]
PLoS ONE, 2012 Echinoderms have long been considered to be one of the animal phyla that is strictly marine. However, there is growing evidence that some recent species may live in either brackish or hypersaline environments.
Mariusz A Salamon +4 more
doaj +1 more source
Advancing conservation breeding programs for marine invertebrates
Conservation Biology, EarlyView.Abstract In the face of ecosystem change and biodiversity loss caused by climate change and other stressors, conservation breeding, or captive breeding, with the aim of reintroduction for wild population recovery, is an emerging tool for preventing species’ extinction and rehabilitating ecosystems.
Elora H. López‐Nandam +3 more
wiley +1 more source
Understanding form and function of the stem in early flattened echinoderms (pleurocystitids) using a microstructural approach [PDF]
PeerJ, 2016 Pleurocystitid rhombiferans are among the most unusual echinoderms whose mode of life has been long debated. These echinoderms are usually interpreted as vagile epibenthic echinoderms, moving over the sea bottom by means of a flexible stem.
Przemysław Gorzelak, Samuel Zamora
doaj +2 more sources
The FEBS Journal, EarlyView.Adult ascidians are capable of regenerating their entire brains following injury, and glycosaminoglycans have been shown to either promote or inhibit neuritogenesis. In this study, dermatan 2,6‐disulfate (D2,6S) was identified as the predominant complex carbohydrate in the ascidian brain.
Taynan Motta Portal +5 more
wiley +1 more source
Radial Glia in Echinoderms [PDF]
Developmental Neurobiology, 2018 AbstractRadial glial cells are crucial in vertebrate neural development and regeneration. It has been recently proposed that this neurogenic cell type might be older than the chordate lineage itself and might have been present in the last common deuterostome ancestor.
Vladimir Mashanov, Olga Zueva
openaire +3 more sources
Checklist with first records for the Echinoderms of northern Tunisia (central Mediterranean Sea)
Scientia Marina, 2019 Tunisia occupies a strategic biogeographic position in the Mediterranean Sea and the Strait of Sicily is considered a biogeographical boundary that separates the eastern and western basins.
Hayfa Chammem +2 more
doaj +1 more source
Altered photoperiod affects behaviour in a key fish grazer, the thinlip grey mullet, Chelon ramada
Journal of Fish Biology, EarlyView.Abstract The aim of this study is to address experimentally the immediate impacts of an alteration of the photoperiod, simulating an extreme artificial light pollution, on the behaviour and stress of a key grazer fish common in temperate coastal ecosystems in Europe, the thinlip grey mullet, Chelon ramada.
Caroline Roux +7 more
wiley +1 more source