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Over thirty years ago anecdotal accounts of the undescribed Larger Pacific Striped Octopus suggested behaviors previously unknown for octopuses. Beak-to-beak mating, dens shared by mating pairs, inking during mating and extended spawning were mentioned in publications, and enticed generations of cephalopod biologists. In 2012-2014 we were able to obtain several live specimens of this species, which remains without a formal description. All of the unique behaviors listed above were observed for animals in aquaria and are discussed here. We describe the behavior, body color patterns, and postures of 24 adults maintained in captivity. Chromatophore patterns of hatchlings are also shown.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4534201 | PMC |
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0134152 | PLOS |
JCI Insight
September 2025
Diabetes & Metabolism Research Center, University of Utah, Salt Lake City, United States of America.
Impaired muscle regrowth in aging is underpinned by reduced pro-inflammatory macrophage function and subsequently impaired muscle cellular remodeling. Macrophage phenotype is metabolically controlled through TCA intermediate accumulation and activation of HIF1A. We hypothesized that transient hypoxia following disuse in old mice would enhance macrophage metabolic inflammatory function thereby improving muscle cellular remodeling and recovery.
View Article and Find Full Text PDFProc Natl Acad Sci U S A
September 2025
Martin A. Fisher School of Physics, Brandeis University, Waltham, MA 02453.
Programmable self-assembly has recently enabled the creation of complex structures through precise control of the interparticle interactions and the particle geometries. Targeting ever more structurally complex, dynamic, and functional assemblies necessitates going beyond the design of the structure itself, to the measurement and control of the local flexibility of the intersubunit connections and its impact on the collective mechanics of the entire assembly. In this study, we demonstrate a method to infer the mechanical properties of multisubunit assemblies using cryogenic electron microscopy (cryo-EM) and RELION's multi-body refinement.
View Article and Find Full Text PDFAnim Cogn
September 2025
Department of Psychology, University of Cambridge, Downing Street, Cambridge, CB2 3EB, UK.
Although many animal species are known to learn to respond to human verbal commands, this ability is understudied, as are the cues used to do so. For the best-studied species, the dog, domestication itself is used to justify successful attending to human communicative cues. However, the role of domestication in sensitivity to human cues remains debated.
View Article and Find Full Text PDFHernia
September 2025
Center for Perioperative Optimization, Department of Surgery, Copenhagen University Hospital - Herlev and Gentofte, Borgmester Ib Juuls Vej 1, Herlev, DK-2730, Denmark.
Purpose: Primary ventral hernia repair is a common elective procedure; however, mesh placement practices vary widely, and there is limited evidence to guide optimal placement. This international study examined surgeons' preferences and considerations regarding mesh placement in elective primary ventral hernia repair.
Methods: We conducted an international cross-sectional survey targeting surgeons experienced in primary ventral hernia repair.
Ann Hematol
September 2025
Department of Hematology and Oncology, Faculty of Medical Sciences, University of Fukui, Fukui, Japan.
To evaluate whether age modifies the association between the geriatric nutritional risk index (GNRI) and overall survival (OS) in patients aged ≥ 18 years with newly diagnosed diffuse large B-cell lymphoma (DLBCL), we conducted a multi-centre retrospective study of 552 patients. Multivariable Cox regression with restricted cubic spline (RCS) modelling showed that GNRI was significantly associated with OS, but the relationship was non-linear (P for non-linearity = 0.0158).
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