Results 81 to 90 of about 1,028,789 (326)

Antimicrobial activity of bacteria isolated from Red Sea marine invertebrates

open access: yesBiotechnology Reports, 2018
Marine invertebrates-associated microorganisms were considered to be important sources of marine bioactive products. This study aims to isolate marine invertebrates associated bacteria with antimicrobial activity from the Red Sea and test their ...
Manar El Samak   +2 more
doaj   +1 more source

Challenges for the development of a biotic ligand model predicting copper toxicity in estuaries and seas [PDF]

open access: yes, 2012
This is the author's accepted manuscript. The final published article is available from the link below. Copyright @ 2011 SETAC.An effort is ongoing to develop a biotic ligand model (BLM) that predicts copper (Cu) toxicity in estuarine and marine ...
de Polo, A, Scrimshaw, MD
core   +1 more source

Differentiating hyperpycnal, hypopycnal and turbidity current deposits in late Quaternary glaciogenic mud

open access: yesThe Depositional Record, EarlyView.
X‐ray CT and microscopic analysis of glaciogenic mud provide insight into the deposits of sediment‐laden density flows and reveal that strata comprise two microtextural motifs. The deposits of bottom‐hugging hyperpycnal flows and slope‐failure‐related turbidity currents are characterised by laterally continuous, sharply bounded silt‐rich and clay‐rich ...
Omar N. Al‐Mufti   +3 more
wiley   +1 more source

Metallothionein as an indicator of water quality: assessment of the bioavailability of cadmium, copper, mercury and zinc in aquatic animals at the cellular level [PDF]

open access: yes, 1994
The study of metallothioneins (MTs) has greatly improved our understanding of body burdens, metal storage and detoxification in aquatic organisms subjected to contamination by the toxic heavy metals, Cd, Cu, Hg and Zn.
George, S.G., Langston, W.J.
core  

Interspecific comparisons of anuran embryonic epidermal landscapes and energetic trade‐offs in response to changes in salinity

open access: yesDevelopmental Dynamics, EarlyView.
Abstract Background Freshwater salinization is an emerging stressor in amphibian populations, and embryonic stages are most vulnerable. To better understand the variation in embryonic osmoregulation, we challenged embryos of two phylogenetically diverse anuran species, Xenopus laevis and Lithobates (Rana) sylvaticus, along a gradient of non‐lethal ...
Kourtnie Whitfield, Erica J. Crespi
wiley   +1 more source

Bioprospecting of Marine Invertebrates for New Natural Products — A Chemical and Zoogeographical Perspective

open access: yesMolecules, 2012
Bioprospecting for new marine natural products (NPs) has increased significantly over the last decades, leading to an unprecedented discovery of new molecules.
Ricardo Calado   +4 more
doaj   +1 more source

Sargassum polyceratium (Phaeophyceae, Fucaceae) surface molecule activity towards fouling organisms and embryonic development of benthic species [PDF]

open access: yes, 2011
International audienceCoral reefs have undergone profound ecological changes over recent decades. Areas formerly covered by scleractinian coral species are now often overgrown by macroalgae.
Gros, O.   +3 more
core   +3 more sources

The endocannabinoid system regulates both ependymoglial and neuronal cell responses to a tail amputation in the axolotl

open access: yesDevelopmental Dynamics, EarlyView.
Abstract Background The endocannabinoid system is a neuromodulatory system implicated in cellular processes during both development and regeneration. The Mexican axolotl, one of only a few vertebrates capable of central nervous system regeneration, was used to examine the role of the endocannabinoid system in the regeneration of the tail and spinal ...
Michael Tolentino   +3 more
wiley   +1 more source

Improved ultrastructure of marine invertebrates using non-toxic buffers

open access: yesPeerJ, 2016
Many marine biology studies depend on field work on ships or remote sampling locations where sophisticated sample preservation techniques (e.g., high-pressure freezing) are often limited or unavailable.
J. Montanaro, D. Gruber, Nikolaus Leisch
semanticscholar   +1 more source

Habitat connectivity in reef fish communities and marine reserve design in Old Providence-Santa Catalina, Colombia [PDF]

open access: yes, 2003
On the insular platform of Old Providence/Santa Catalina, Colombia, we compared nearshore lagoonal patch reefs to those on the northern bank distant from the islands to determine the importance of habitat connectivity to fish community structure ...
Appeldoorn, R.S.   +4 more
core   +2 more sources

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