Results 71 to 80 of about 827 (136)
This study describes a new hexamerous epizoic brittle star species, Gymnolophus sexradia sp. nov., from the South China Sea, which lives on crinoid hosts and exhibits a six‐armed body plan possibly indicating fissiparity. Its vertebral and arm plate structures enhance horizontal flexibility for grasping the host, and phylogenetic analysis based on ...
Ziye Zhang +5 more
wiley +1 more source
Abstract Frontal zones are often areas of increased biological productivity and have hydrographic gradients on short spatial scales. The small scale of gradients poses a challenge in identifying differences in zooplankton community structure and trophic transfer efficiency through the pelagic food web.
Pieter D. L. Hovenkamp +3 more
wiley +1 more source
ABSTRACT cAMP‐dependent protein kinase (PKA) plays a central role in regulating sperm motility in both invertebrates and mammals. The sea mussel Mytilus galloprovincialis provides a valuable model for investigating the molecular mechanisms underlying gamete activation in externally fertilizing organisms.
Izaskun Ibarguren +4 more
wiley +1 more source
ABSTRACT Aim Marine species ranges are often large, contributing to relatively high community similarity over space, with decreased ranges expected among taxa that have lower dispersal and/or higher substrate requirements. We tested for a weakening of biogeographic structuring among dispersing abyssal taxa along the benthic to holoplanktonic habitat ...
Gabrielle N. Ellis +5 more
wiley +1 more source
Revisiting the life cycle of Margalefidinium polykrikoides Group III
Abstract Dinoflagellates produce cysts as a strategy to withstand environmental stressors, with nutrient depletion generally considered a key trigger for cyst production. Resting cysts are thick‐walled, typically composed of one to several layers, and characterized by a prolonged dormancy period.
Eduardo Pérez‐Vega +3 more
wiley +1 more source
Structural Characterization and Profiles of Saponins from Two Algerian Sea Cucumbers
Sea cucumbers are benthic marine invertebrate members of the phylum Echinodermata. Due to the absence of a rigid skeleton, these species have developed chemical defenses based on the production of saponins (triterpene glycosides).
Ihcene Khodja +5 more
doaj +1 more source
ABSTRACT The integrated analysis of lithofacies, mineralogy and geochemistry of the hemipelagic marine succession exposed in La Cerradura section (South‐Iberian Palaeomargin) provides new information to characterise the palaeoenvironmental conditions during the latest Pliensbachian to early Toarcian, including the Jenkyns Event.
Chaima Ayadi +4 more
wiley +1 more source
Se presentan nuevos registros de ofiuroideos para localidades de Zihuatanejo, Guerrero y de Puerto Escondido, Oaxaca en el Pacífico mexicano. Mediante recolectas realizadas en diversos sustratos se obtuvieron 12 especies, de las cuales Ophiocoma ...
M. Rebeca Granja-Fernández +1 more
doaj

