Results 41 to 50 of about 4,510 (201)

Modulation of swimming in the gastropod Melibe leonina by nitric oxide [PDF]

open access: yes, 2002
Nitric oxide (NO) is a gaseous intercellular messenger produced by the enzyme nitric oxide synthase. It has been implicated as a neuromodulator in several groups of animals, including gastropods, crustaceans and mammals.
Newcomb, James M.   +1 more
core   +1 more source

Mechanical properties and cuticle organisation in mandibles are related to the task specialisation in leafcutter ants (Atta laevigata, Attini, Formicidae)

open access: yesPhysiological Entomology, Volume 50, Issue 2, Page 152-165, June 2025.
Task‐specialization and mandible properties: Leafcutter ants show caste‐based task division, reflected in mandible morphology and mechanical properties. Structural and mechanical analysis: The cuticle was composed of exo‐, meso‐, and endocuticle.
Wencke Krings   +2 more
wiley   +1 more source

Parental transfer of the antimicrobial protein LBP/BPI protects Biomphalaria glabrata eggs against oomycete infections [PDF]

open access: yes, 2013
Copyright: © 2013 Baron et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source ...
A Baeza Garcia   +75 more
core   +8 more sources

Lattice points close to a helix [PDF]

open access: yesarXiv, 2023
We obtain lower bound for the maximum distance between any three distinct points in an affine lattice which are close to a helix with small curvature and torsion.
arxiv  

Bivalve Shell Utilization by Juvenile Octopus vulgaris in Sandy Substrates

open access: yesEcology and Evolution, Volume 15, Issue 5, May 2025.
This study investigates how juvenile Octopus vulgaris adapt to sandy environments with limited shelter and high predation risk by using empty bivalve shells for protection. Through four SCUBA expeditions in NW Spain, nine juveniles were observed using shells that fit their body size, strategically positioning themselves for surveillance and employing ...
Jorge Hernández‐Urcera   +3 more
wiley   +1 more source

16S rRNA sequencing reveals likely beneficial core microbes within faecal samples of the EU protected slug Geomalacus maculosus [PDF]

open access: yes, 2018
The EU-protected slug Geomalacus maculosus Allman occurs only in the West of Ireland and in northern Spain and Portugal. We explored the microbial community found within the faeces of Irish specimens with a view to determining whether a core microbiome ...
Gormally, Mike   +3 more
core   +1 more source

Exploring Ant‐Mollusk Interactions: Insights From Southern Spain

open access: yesEcology and Evolution, Volume 15, Issue 5, May 2025.
This study reports new data about ant‐mollusk interactions from accidental field observations, a quantitative analysis of the snail shells found in 16 Messor ant nest cleanings, and a qualitative analysis of 51 additional nests of different species. ABSTRACT Ants occupy a great variety of habitats, perform essential ecological roles, and interact with ...
Jairo Robla   +3 more
wiley   +1 more source

Circadian Rhythms of Crawling and Swimming in the Nudibranch Mollusc Melibe leonina [PDF]

open access: yes, 2014
Daily rhythms of activity driven by circadian clocks are expressed by many organisms, including molluscs. We initiated this study, with the nudibranch Melibe leonina, with four goals in mind: (1) determine which behaviors are expressed with a daily ...
Kirouac, Lauren E.   +3 more
core   +2 more sources

Assessing brain neuroplasticity: Surface morphometric analysis of cortical changes induced by Quadrato motor training

open access: yesJournal of Anatomy, Volume 246, Issue 5, Page 757-769, May 2025.
Morphological markers for brain plasticity are still lacking, and their findings are challenged by cortical brain surface variability. To overcome the “correspondence problem,” we used a landmark‐free method (generalized Procrustes surface analysis, GPSA) to investigate cortical surface shape variation in healthy volunteers practicing Quadrato motor ...
F. Spani   +5 more
wiley   +1 more source

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